GST Input Tax Credit: How To Claim It And Avoid Costly Mistakes
Authored By - Hemanth Aligingi, Senior Executive at Outsource360 On 3 October 2024 the Supreme Court of India decided a question that had followed a shopping-mall developer, Safari Retreats Private Limited, from the Orissa High Court. Could it claim GST input tax credit on the goods and services used to build a mall that it lets out, and set that credit against the GST it charges on rent? The stakes were easy to grasp. A building's worth of GST would either become credit against future rent or stay a cost buried in the concrete.
The obstacle was section 17(5)(d) of the CGST Act, which blocked credit on goods and services for constructing immovable property on your own account, "other than plant or machinery", as the clause then read. Before the appeal, the Orissa High Court had read the clause down. The Supreme Court set that aside and rejected the constitutional challenge to sections 17(5)(c), 17(5)(d) and 16(4), but it held that "plant or machinery" "cannot be given the same meaning" as the defined term "plant and machinery".
Whether a building such as a mall is a "plant", the court said, is a question of fact under a "functionality test", and it sent the cases back to the Orissa High Court. For owners of rented-out buildings, a door had opened.
Parliament closed it. Section 124 of the Finance Act, 2025 replaced "plant or machinery" with "plant and machinery" in section 17(5)(d), deemed substituted with effect from 1 July 2017, GST's first day. It also added an Explanation that applies "notwithstanding anything to the contrary contained in any judgment, decree or order of any court", and both changes took effect on 1 October 2025. Read with that deeming date, the functionality test never had a single year in which it applied.
Here's the thing the case shows. Input tax credit isn't an automatic refund of the GST you've paid; it's an entitlement Parliament writes, with conditions, into sections 16 and 17 of the CGST Act. What those sections give, they can narrow, even backwards in time. And if a Supreme Court win can be undone, a credit sitting in a portal statement proves even less.
Most founders will never build a mall. But every business's credit rests on the same two sections, and on a monthly routine that three parties must run correctly: your supplier, you and the GST portal. The practical reality for anyone claiming ITC today: claim only what the text allows, keep evidence for each condition, and never count a credit as cash until its deadlines have passed. The next big one is 30 November 2026, the last day to claim credit on FY 2025-26 invoices (assuming no extension is notified).
GST input tax credit (ITC) is the GST a registered business pays on its business purchases, set off against the GST it owes on sales. You can claim it with a tax invoice, the goods or services received, the invoice in your GSTR-2B and the supplier's tax paid, in a GSTR-3B filed by the 30 November cut-off.
The sections below follow input tax credit under GST through a month and a year: the section 16 conditions, the IMS routine, deadlines, blocked credits, reversals and the mistakes that cost interest. This guide covers India's GST under the CGST Act, 2017; Canada and Australia use the same term under different rules.
On this page
What is GST input tax credit, and how does it work?
Conditions for claiming ITC under section 16
How to claim input tax credit in GSTR-3B, month by month
GST input tax credit time limits: 180 days and 30 November
Blocked credits under section 17(5): what you can't claim
When you must reverse ITC: common credit, credit notes and GST 2.0
Supplier default: when your ITC depends on someone else's return
ITC for multi-state and exporting businesses: ISD, refunds and transfers
Common mistakes in ITC claims, and what they cost
Frequently asked questions about GST input tax credit
What is GST input tax credit, and how does it work?
What is GST input tax credit? It's the GST a registered business pays on its purchases, set off against the GST it charges on its sales, so tax falls only on the value each business adds. Section 16(1) of the CGST Act grants it on supplies used or intended to be used in the course or furtherance of business, and "input tax" (section 2(62)) includes IGST on imports and reverse-charge tax.
A worked ITC example: one month, from purchase to set-off
Take the example company (hypothetical): a small Karnataka software firm with one GSTIN, filing GSTR-3B monthly. Its cloud hosting comes from a Maharashtra supplier, so it pays IGST.
Line | GST on the invoice (Rs) | ITC claimable (Rs) |
Cloud hosting, Maharashtra supplier | IGST 36,000 | 36,000 |
Office rent, registered Karnataka landlord | CGST 9,000 + SGST 9,000 | 18,000 |
Gift hampers for clients, Karnataka supplier | CGST 1,800 + SGST 1,800 | Nil (blocked) |
Total input tax | 57,600 | 54,000 |
Output tax on sales to a Karnataka client | CGST 72,000 + SGST 72,000 | - |
Paid in cash after set-off | CGST 45,000 + SGST 45,000 | 90,000 |
Set-off follows Rule 88A of the CGST Rules: IGST credit first (here 18,000 against CGST and 18,000 against SGST), then CGST and SGST credit against their own heads. Output tax of 1,44,000 less credit of 54,000 leaves 90,000.
All three invoices sit in GSTR-2B, yet section 17(5)(h) of the CGST Act blocks the hampers. CGST credit never pays SGST, or the reverse (section 49(5)), and the rules show no 2026 change to this order. Sellers with monthly taxable supplies above Rs 50 lakh (with exceptions) can pay at most 99% of output tax from credit under Rule 86B.
Why ITC is a cash question, not just a tax entry
Why claim credit at all, if the GST can be expensed? Because expensing the Rs 36,000 of IGST saves only the income tax on it (Rs 9,000 at an illustrative 25% rate), while claiming it recovers all Rs 36,000. Our recommendation on pricing: GST you can claim sits outside your margins, and GST you can't claim is a cost that belongs in the price.
Timing matters too: GST leaves with the supplier's invoice (or, under reverse charge, straight from you) before it returns as credit. That's the case for treating indirect tax as a cash-flow line, not a filing task. Each month it depends on three parties: your supplier (GSTR-1 and GSTR-3B), you (IMS actions, payment within 180 days, GSTR-3B) and the portal (GSTR-2B and mismatch checks).
Conditions for claiming ITC under section 16
Section 16(2) of the CGST Act sets six conditions, and every invoice must meet them all: a tax invoice or debit note, the supplier's report so it reaches your GSTR-2B, receipt of the supply, no restriction, tax paid by the supplier, and your own return filed.
Condition | Law | How to evidence it | What goes wrong |
Tax invoice or debit note | s.16(2)(a); Rule 36 | Invoice to your GSTIN, with an IRN if required | Bill of supply, wrong GSTIN or no IRN |
Reported by the supplier, so in GSTR-2B | s.16(2)(aa); Rule 36(4) | Its GSTR-2B line | Late filing or a wrong GSTIN |
Goods or services received | s.16(2)(b) | Delivery records, e-way bills, proof of service | Invoice and payment alone may not prove receipt |
Credit not restricted | s.16(2)(ba); s.38 | No restriction in the statement | A new or defaulting supplier's credit held back |
Supplier has paid the tax | s.16(2)(c); s.41 | The supplier's GSTR-3B filing status | Supplier collects GST, files no GSTR-3B |
Your own return filed | s.16(2)(d); s.39 | Your GSTR-3B for the period | An unfiled GSTR-3B blocks the next GSTR-2B |
Paid within 180 days, claimed in time | s.16(2) proviso; s.16(4) | Payables ageing; filing dates | Credit repaid with interest, or lost |
Who can claim input tax credit, and who can't
Only a registered person can claim, for business use (section 16(1)); on registration, see when GST registration becomes compulsory, and the ITC-01 claim on opening stock. A composition taxpayer gives up ITC and its buyers get none from it (sections 10(4) and 17(5)(e) of the CGST Act), and a non-resident taxable person gets credit only on imported goods (section 17(5)(f)).
Capital goods qualify, with one catch. Section 16(3) of the CGST Act, which still refers to the Income-tax Act, 1961 (replaced by the Income-tax Act, 2025 from 1 April 2026), bars ITC on the tax component if you claim depreciation on it. And unclaimed credit lapses at its deadline.
Showing in GSTR-2B is not the same as being eligible
In GSTR-2B, so safe to claim? No: 2B is the ceiling, not the entitlement. An invoice in it can still be blocked, unpaid after 180 days, from a supplier who skips GSTR-3B, time-barred, or for goods never received. The example company's (hypothetical) hampers pass the 2B test yet fail section 17(5)(h).
Under the Rule 36(2) proviso of the CGST Rules, a document supports credit if it shows at least the tax, description, total value, both GSTINs and, for inter-state supplies, the place of supply; a bill of supply carries no tax, so supports none. If a supplier that must e-invoice issues an invoice without an IRN, Rule 48(5) says it "shall not be treated as an invoice". Since 1 April 2025, a supplier with aggregate turnover of Rs 10 crore or more can't report an e-invoice to the IRP more than 30 days after its date.
Rules tightened in stages. Credit was self-assessed from July 2017; a Rule 36(4) cap on invoices suppliers hadn't uploaded began on 9 October 2019 and ended at a 5% tolerance, and since 1 January 2022 section 16(2)(aa) and Rule 36(4) allow credit only on invoices in GSTR-2B.
How to claim input tax credit in GSTR-3B, month by month
You claim ITC in GSTR-3B, from the credit the portal puts in your GSTR-2B after your IMS actions, less anything blocked, reversed or not yet eligible. The routine repeats every month:
Check that suppliers have reported your invoices in GSTR-1, IFF or GSTR-1A, and chase the gaps.
Act on each record in IMS: accept, reject or keep pending (no action counts as accepted).
Take GSTR-2B when it is generated on the 14th, or recompute it after changing IMS actions.
Reconcile GSTR-2B with your purchase register invoice by invoice, and list every mismatch.
Remove credit blocked by section 17(5) of the CGST Act and the share used for personal or exempt supplies.
Reverse credit on invoices still unpaid 180 days after their date, and check suppliers' GSTR-3B filing.
Report credit availed, reversed and ineligible in GSTR-3B Table 4, then set it off against output tax.
File GSTR-3B by the 20th (22nd or 24th for quarterly filers, under Rule 61) and keep the reconciliation file.
IMS: accept, reject or keep pending
The Invoice Management System (IMS) has run since the October 2024 tax period on records suppliers save in GSTR-1, IFF or GSTR-1A. Accepted records flow into GSTR-3B, rejected ones don't, and pending ones wait, never beyond the section 16(4) limit.
Is IMS mandatory? No. The catch: a record left alone is deemed accepted when GSTR-2B is generated, so ignoring IMS is itself a decision. GSTR-2B is recomputed if actions change and frozen once GSTR-3B is filed; reverse-charge supplies and credit barred by section 16(4) or place-of-supply rules bypass IMS.
GSTR-2B is also sequential: it generates only after the previous month's GSTR-3B is filed (quarterly filers get it each quarter). Since 1 October 2025, section 38 of the CGST Act calls it "a statement" of available and unavailable credit. Our advice: reject a record that isn't yours or is wrong, but accept a genuine invoice and reverse ineligible credit in GSTR-3B (credit notes differ). GSTN's IMS offline tool (advisory, 23 April 2026) handles bulk actions.
Reconciling GSTR-2B with your books and filling Table 4
GSTR-2A is a running view that changes as suppliers file; GSTR-2B is the fixed statement that caps your claim. Reconcile against 2B with the exception report practitioners on Reddit describe: invoices missing from the books or from 2B, value or tax mismatches, wrong GSTINs and duplicates, plus a supplier chase list with the credit at risk (a quarterly filer's invoice may land a period late). See where this check sits in the monthly close.
Table 4 of GSTR-3B separates credit availed, reversed and ineligible (CBIC Circular No. 170/02/2022-GST). The circular maps 4(B)(1) to permanent reversals (Rules 38, 42 and 43 and section 17(5)), 4(B)(2) to reversals that may be reclaimed (such as Rule 37), 4(D)(1) to credit reclaimed and 4(D)(2) to credit ineligible under section 16(4) or place-of-supply rules.
Since the August 2023 return period, the Electronic Credit Reversal and Re-claimed Statement (ECRRS) has tracked 4(B)(2) reversals and 4(D)(1) reclaims, which warns when a reclaim exceeds its balance. In December 2025 GSTN announced that reclaims above that balance, and reverse-charge credit above the RCM statement, would "shortly" block GSTR-3B filing.
GST input tax credit time limits: 180 days and 30 November
Four clocks decide whether a credit survives: 180 days from the invoice date to pay your supplier, 30 September for the supplier's own GSTR-3B, 30 November after the financial year to claim, and three years from a return's due date, after which it can't be filed.
Clock | Deadline | If you miss it | Law |
Pay the supplier | 180 days from the invoice date | Repay with interest; re-avail on payment | s.16(2) proviso; Rule 37 |
Supplier files its GSTR-3B | 30 September after the claim year | Reverse by 30 November; re-avail when it files | Rule 37A |
Claim the credit | 30 November after the year, or the annual return if earlier | Credit lost; the year's returns can't be corrected | s.16(4); s.39(9) |
File any return | Three years from its due date | The portal rejects it | s.39(11); s.44(2) |
Supplier's e-invoice (AATO Rs 10 crore or more) | 30 days from the invoice date | No IRN, so no valid invoice | Rule 48(5); IRP rule |
The 180-day payment rule under Rule 37
Haven't paid the supplier the value plus tax within 180 days of the invoice date? Then the second proviso to section 16(2) of the CGST Act makes you pay an amount equal to the credit "along with interest payable under section 50". Rule 37 of the CGST Rules makes the reversal proportionate to the unpaid part, in the next GSTR-3B after day 180, re-availed on payment with no section 16(4) limit. Reverse-charge supplies are excluded.
If the example company (hypothetical) has paid half its Rs 2,36,000 cloud invoice by day 180, Rs 18,000 of credit comes back out with interest until it pays the rest. That's what a payables ageing report someone actually reads is for.
The 30 November cut-off, older years and the three-year bar
Section 16(4) bars credit after 30 November following the financial year, or after that year's annual return is filed, if earlier; before 1 October 2022 the limit was the September return's due date. For FY 2025-26, assuming no extension is notified, the last returns due in time are the October 2026 GSTR-3B (due 20 November 2026) and, for quarterly filers, the July-September 2026 return (due 22 or 24 October 2026 by state). GSTR-9 is due 31 December 2026 under Rule 80. But filing it early shuts the window.
Older years differ: section 16(5) rescues FY 2017-18 to 2020-21 credit taken in returns filed by 30 November 2021, and section 16(6) helps revoked registrations. Harshest is section 39(11): no return can be filed three years after its due date, enforced from the July 2025 tax period, so credit in those returns is lost for good.
Before 30 November 2026: an ITC checklist for FY 2025-26
Assuming no extension is notified, work through these before 30 November 2026:
List FY 2025-26 invoices in your books but not in GSTR-2B, and chase those suppliers.
Clear IMS: act on pending FY 2025-26 records before filing the October 2026 GSTR-3B.
Check which suppliers missed GSTR-3B by 30 September 2026; reverse that credit under Rule 37A.
Finish the Rule 42 annual true-up of common credit by 20 October 2026 if you file monthly.
Correct FY 2025-26 return errors now: section 39(9) bars rectification after 30 November.
Claim remaining eligible credit in the October 2026 GSTR-3B, due 20 November 2026.
File the FY 2025-26 annual return last, because filing it closes the window early.
Blocked credits under section 17(5): what you can't claim
Section 17(5) of the CGST Act lists credits you can't claim even with a valid invoice, a paying supplier and a GSTR-2B entry. It covers most passenger cars, food and catering, health and fitness services, personal use, gifts, CSR spending and building your own premises, some with narrow exceptions.
What is blocked | Clause of s.17(5) | Unless | Common trap |
Passenger vehicles up to 13 seats, including the driver | (a) | You sell them, carry passengers or teach driving | Commercial registration alone changes nothing |
Insurance, repair and servicing of those vehicles | (ab) | Qualifying vehicle, or you make or insure it | - |
Food, catering, beauty and health services, cosmetic surgery, life and health insurance | (b)(i) | Used for a taxable supply of the same kind, or required by law for employees | Treating every staff-meal bill alike |
Club and fitness memberships; employee leave travel | (b)(ii), (iii) | Required by law for employees | Gym plans booked as staff welfare |
Building or renovating your own premises | (c), (d) | Plant and machinery | Capitalised fit-outs count |
Tax paid by a composition supplier | (e) | - | - |
CSR spending | (fa) | - | Claims that CSR credit is allowed |
Personal consumption | (g) | - | Personal gadgets on the company GSTIN |
Goods lost, stolen, destroyed, written off, gifted or given as free samples | (h) | - | Client and festival gifts |
Tax paid on a section 74 demand, for periods up to FY 2023-24 | (i) | - | - |
Buildings after Safari Retreats: the 2025 amendment
Section 17(5)(d) blocks goods and services for building immovable property on your own account, other than plant and machinery, even for business use; clause (c) blocks works contracts for the same unless they feed a further works contract. Construction includes renovation, additions, alterations and repairs to the extent capitalised (Explanation 1), so a capitalised fit-out is blocked and an expensed repair isn't.
"Plant and machinery" means apparatus, equipment and machinery fixed to earth by foundation or structural support and used to make outward supplies, with that foundation, but not land, buildings or other civil structures, telecommunication towers, or pipelines laid outside the factory premises. Because the Finance Act, 2025 change runs from 1 July 2017 and overrides court judgments (Safari Retreats included), a claim for an earlier year resting on the functionality test is exposed, in our reading. The same block covers an under-construction hotel, or a flat bought through a proprietorship's GSTIN.
Cars, food, insurance and gifts: the ITC blocks businesses hit most
What about everyday costs? Office rent, CA, audit, legal and trademark-attorney fees, software, and laptops or phones used in the business aren't in section 17(5), and nor is reverse-charge tax on imported services, since that tax is input tax. Blocked: a founder's company car (outside the three exceptions), team lunches and client entertainment, gym and club memberships, personal gadgets on the company GSTIN (and never on someone else's), and client or festival gifts.
But goods vehicles aren't blocked. Food, health insurance and similar items are claimable where a law obliges the employer to provide them, and individual life and health policies have been exempt since 22 September 2025, so there's no GST to claim on them. Group and employer-sponsored policies still carry 18% GST.
When you must reverse ITC: common credit, credit notes and GST 2.0
A reversal takes back credit already claimed. Some reversals are permanent, like common credit used for exempt or personal purposes (Rules 42 and 43 of the CGST Rules). Others are temporary: credit reversed for an unpaid supplier (Rule 37) or a missing supplier return (Rule 37A) returns once the problem clears.
Common credit on exempt and personal use: Rules 42 and 43
Section 17 of the CGST Act splits credit between business and personal use and between taxable and exempt supplies, where exempt value includes reverse-charge supplies and land and securities deals. Rule 42 splits common input credit monthly and trues it up before the September return after the year ends, charging section 50(1) interest from the next 1 April on any extra reversal; Rule 43 spreads common capital goods over five years.
Banks and NBFCs may instead take 50% of eligible credit each month, the rest lapsing. And a laptop partly used for personal work earns credit only on its business share.
Credit notes since 1 October 2025
Since 1 October 2025, section 34(2) of the CGST Act lets a supplier cut its tax for a credit note only if a registered recipient has reversed any credit it took. From the October 2025 tax period, IMS lets you keep a credit note pending for one tax period and declare the "Amount of ITC to be reduced".
Worth flagging: credit notes are now two-sided; a sales rebate creates compliance work at the customer. Circular No. 251/08/2025-GST of 12 September 2025 says financial or commercial credit notes don't reduce the supplier's tax, so the recipient need not reverse credit. Finance Act, 2026 changes letting post-supply discounts cut value through a GST credit note without prior agreement, where the recipient reverses the credit, weren't in force as of September 2026.
GST 2.0: 5% rates without ITC and newly exempt supplies
Can you claim ITC at the 5% GST rate? It depends on the entry. New rates took effect on 22 September 2025 after the 56th GST Council met on 3 September. Hotel rooms up to Rs 7,500 per unit per day and beauty and physical well-being services (salons, gyms, yoga) are at 5% without ITC, while goods transport agencies choose 5% without credit or 18% with it.
Where an outward supply became exempt, credit must be reversed for supplies from 22 September 2025, so insurers on now-exempt individual policies reverse the linked credit (our inference). Nor is a rate cut a refund: an inverted-duty refund isn't available just because the same goods' rate fell. For a salon, gym or budget hotel, GST on rent and software is now a cost.
Supplier default: when your ITC depends on someone else's return
Your credit depends on your supplier's compliance: section 16(2)(c) of the CGST Act makes its tax payment a condition of your ITC, and Rule 37A of the CGST Rules makes you reverse credit when it misses GSTR-3B. Courts have told officers to pursue the supplier first, but only in some cases.
Rule 37A and the tax-paid condition
Under Rule 37A, if the supplier hasn't filed that period's GSTR-3B by 30 September after the year you claimed, you reverse the credit in a GSTR-3B filed by 30 November, or pay it with interest, and re-avail once it files. Does a GSTR-2B line prove the supplier paid? No: a supplier can file GSTR-1, putting the invoice in your 2B, and still skip GSTR-3B.
Section 41(2) also makes you reverse, with interest, credit on supplies whose tax wasn't paid. Credit is now supplier management: check filing status, and tie payment release to the supplier's GSTR-1 and GSTR-3B.
What courts said on supplier default, and how to protect ITC
On 2 August 2023 the Calcutta High Court set aside a demand on Suncraft Energy Private Limited, denied credit over supplier invoices missing from GSTR-1 despite invoices, receipt of goods and bank payment. Citing the government's 4 May 2018 press release that there "shall not be any automatic reversal of input tax credit from buyer on non-payment of tax by seller", the court reserved recovery from buyers for exceptional cases such as collusion or a missing supplier. The Supreme Court dismissed the State's petition on 14 December 2023 over the small demand, not on the merits.
The Madras High Court did likewise in D.Y. Beathel Enterprises (24 February 2021), quashing orders made without examining or pursuing the sellers. But in Ecom Gill Coffee Trading (13 March 2023), a pre-GST case under section 70 of the Karnataka VAT Act, 2003, the Supreme Court held that invoices and payment alone didn't prove a genuine transaction, and departments now cite it in GST disputes. In practice, keep proof of receipt (e-way bills, transporter records, delivery proof) and check a supplier's GSTIN and filing history before the first order.
ITC for multi-state and exporting businesses: ISD, refunds and transfers
Two situations change how credit moves. A business with GSTINs across states must route shared input-service credit through an Input Service Distributor, and an exporter, or a business buying at higher rates than it sells, builds credit that's refundable in cash only in narrow cases.
Input Service Distributor: mandatory since 1 April 2025
Since 1 April 2025, section 20 of the CGST Act says an office receiving tax invoices for input services, including reverse-charge services, on behalf of distinct persons (same-PAN registrations) "shall be required to be registered as Input Service Distributor". Under Rule 39 of the CGST Rules, it distributes that credit monthly through GSTR-6 (due 13 days after month-end, section 39(4)), giving each registration its own credit and sharing common credit pro rata to state turnover.
Taking or distributing credit in breach of section 20 costs Rs 10,000 or that credit, if higher (section 122(1)(ix)). Fair warning for a foreign-owned company with offices in two states: another GSTIN and a monthly return for costs once treated as head-office overhead.
Exports, inverted duty and ITC you can't use
Section 54(3) of the CGST Act refunds unused credit in cash only for zero-rated supplies, such as exports, made without paying tax, and for an inverted duty structure (inputs taxed higher than outputs), subject to its conditions. A service exporter uses the first route; a seller of 5% goods buying 18% raw materials may fit the second.
Does closing the company turn the balance into cash? No. Credit moves only with the business, on a sale, merger, demerger, amalgamation, lease or transfer that provides for liabilities (section 18(3)), and opting into composition or turning wholly exempt means repaying credit on stock and capital goods, with the rest lapsing (section 18(4)).
Common mistakes in ITC claims, and what they cost
Most ITC mistakes fall into three groups: claiming what the law blocks, claiming before a condition is met, and losing credit to a missed deadline. The cost is rarely just the credit: interest applies where wrong credit was used, mismatches trigger automatic intimations, and notices can add penalties.
Mistake | What it costs | How to fix it |
Claiming credit not in GSTR-2B | DRC-01C intimation; interest if utilised | Pay via DRC-03 or get the supplier to report it |
Claiming a blocked item (car, staff meals, gifts) | Reversal, interest if used, possible penalty | Reverse in GSTR-3B Table 4; tag blocked expense heads |
Supplier unpaid past 180 days | Credit repaid with interest | Reverse in the next return; reclaim on payment, within the ECRRS balance |
Supplier never filed GSTR-3B | Reversal by 30 November, or payment with interest | Check filing status; re-avail when it files |
Missing the 30 November cut-off | Credit gone for good | Claim by the October GSTR-3B; file the annual return last |
One invoice claimed twice | Excess credit, interest, a mismatch intimation | Reconcile invoice by invoice against GSTR-2B |
ITC and depreciation on the same GST | Credit disallowed | Claim one, not both (section 16(3)) |
Interest, DRC-01C and blocked ledgers: how a wrong claim is caught
Section 50(3) of the CGST Act charges interest only on credit wrongly availed and utilised, from utilisation to reversal, notified at 18% under a 24% statutory cap. Under Rule 88B of the CGST Rules, credit is utilised once the ledger falls below the wrong amount: the example company (hypothetical), setting off all its credit, would have used any Rs 3,600 of hamper credit it wrongly claimed.
If GSTR-3B credit exceeds GSTR-2B beyond a limit the GST Council recommends, Rule 88D sends a DRC-01C intimation: pay with interest through DRC-03 within 7 days or explain, or face a demand. Rule 86A lets an officer block suspect credit for up to a year. Credit taken without receiving the supply costs Rs 10,000 or the credit, if higher (section 122(1)(vii)). The Press Information Bureau reported on 7 January 2024 that a drive begun in mid-May 2023 had found 29,273 bogus firms involved in suspected ITC evasion of Rs 44,015 crore.
Fixing a wrong ITC claim before it becomes a notice
Caught your own mistake? Reverse the credit in your next GSTR-3B or pay through DRC-03, with interest if utilised, before the year's 30 November cut-off. Sections 73 and 74 of the CGST Act cover periods up to FY 2023-24 and section 74A covers FY 2024-25 onward, with notices due within 42 months of the annual return's due date. Without fraud, paying tax and interest before a 74A notice or within 60 days of it avoids any penalty.
Output tax auto-filled into GSTR-3B from GSTR-1 has been locked since the July 2025 tax period, so corrections go through GSTR-1A first. The GST Appellate Tribunal, launched on 24 September 2025, will build ITC case law. Frankly, the cheapest fix is a monthly reconciliation someone owns, which is when it makes sense to outsource the bookkeeping behind it.
Frequently asked questions about GST input tax credit
How is ITC calculated in GST?
Take the GST on purchase invoices in your GSTR-2B and remove blocked items, the share used for personal or exempt supplies, and any reversals: the rest is your ITC. Set it against your output tax, IGST credit first, and pay the balance in cash.
Is IMS mandatory under GST?
Acting in it is optional. The Invoice Management System, live since the October 2024 tax period, treats a supplier record you leave untouched as accepted when GSTR-2B is generated. Rejected records don't flow into GSTR-3B, and pending ones wait for a later month.
What did the Supreme Court decide in Safari Retreats?
On 3 October 2024 it held that "plant or machinery" in section 17(5)(d) of the CGST Act doesn't mean the defined "plant and machinery", so a building could be a plant under a functionality test. The Finance Act, 2025 reversed this with effect from 1 July 2017.
Can a company claim ITC on a car?
Usually not. Section 17(5)(a) blocks motor vehicles for carrying people with up to 13 seats, including the driver, unless the business sells such vehicles, transports passengers or gives driving training. Goods vehicles aren't blocked.
Can I claim ITC on a laptop or phone used for the business?
Yes, if it's invoiced to your GSTIN, appears in GSTR-2B and is used in the business. Claim only the business share of a device also used personally (section 17(1)), and don't claim income-tax depreciation on the GST as well (CGST section 16(3)).
Can we claim ITC on the 5% GST rate?
It depends on the entry. Since 22 September 2025 some 5% services come without ITC: hotel rooms up to Rs 7,500 per unit per day, beauty and physical well-being services, and goods transport agencies that choose 5% over 18% with credit.
Can I claim ITC if the invoice is not in GSTR-2B?
Generally no. Section 16(2)(aa) and Rule 36(4) allow credit only on invoices your supplier has reported and that appear in your GSTR-2B. Ask the supplier to file or amend GSTR-1 or GSTR-1A, then claim the credit in a later month within the section 16(4) time limit.
Can I claim last month's missed ITC in this month's GSTR-3B?
Yes, if the invoice is in GSTR-2B and you're inside the section 16(4) limit: 30 November after the financial year ends, or the date you file that year's annual return, if earlier. Credit you missed last month doesn't lapse at month end.
How do I reverse ITC wrongly claimed in GSTR-3B?
Reverse it in Table 4(B) of your next GSTR-3B, or pay it through Form DRC-03. Add interest under section 50(3) only if the wrong credit was also utilised, counted from the date of utilisation to the date of reversal (Rule 88B).
What happens if I don't pay my supplier within 180 days?
You pay back an amount equal to the credit on the unpaid part, with interest, in the GSTR-3B for the period after day 180 (Rule 37). Once you pay the supplier, you can re-avail it with no section 16(4) time limit. Reverse-charge supplies are outside the rule.
What is the difference between GSTR-2A and GSTR-2B?
GSTR-2A is a running view that changes whenever suppliers file. GSTR-2B is a fixed statement built after your IMS actions, and since 1 January 2022 it caps the credit you can claim: an invoice missing from it can't be claimed for that period.
What is the difference between blocked credit and ITC reversal?
Blocked credit under section 17(5) can never be claimed. A reversal takes back credit already claimed: for good where it relates to exempt or personal use (Rules 42 and 43), or until the trigger clears under Rules 37 and 37A (you pay the supplier, or the supplier files).
Which section applies to an ITC demand: 73, 74 or 74A?
Sections 73 (no fraud) and 74 (fraud or suppression) cover periods up to FY 2023-24; from FY 2024-25, section 74A covers both, with the notice due within 42 months of the annual return's due date. Without fraud, paying tax and interest before a 74A notice or within 60 days of it avoids a penalty.
What interest applies to wrongly claimed ITC?
Section 50(3) interest applies only if the credit was wrongly availed and utilised, from utilisation until reversal, and Rule 88B treats credit as utilised when your ledger falls below the wrong amount. The Act caps the rate at 24%. The notified rate is 18%.
What is a DRC-01C notice?
It's an intimation under Rule 88D when the ITC in your GSTR-3B exceeds your GSTR-2B by more than a limit the GST Council recommends. You have 7 days to pay the excess with interest through DRC-03 or explain it, and unresolved amounts can become a demand.
Is unused ITC refunded when a business closes?
Not in cash. Section 54(3) refunds unutilised credit only for zero-rated supplies, such as exports, made without paying tax, and for an inverted duty structure. Otherwise it can move only with the business, on a sale, merger or similar transfer (section 18(3)).
References
Legislation and official guidance come first, grouped by issuing body, then judgments, newest first. Act and Rules text is as shown, with its amendment footnotes, in the CBIC GST law repository on 25 September 2026.
Parliament of India, Central Goods and Services Tax Act, 2017, section 2 (Definitions; clause (62) defines input tax), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 10 (Composition levy; sub-section (4) bars a composition taxpayer from collecting tax or taking input tax credit), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 16 (Eligibility and conditions for taking input tax credit), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 17 (Apportionment of credit and blocked credits; its footnotes record the substitution in clause (5)(d) made by section 124 of the Finance Act, 2025 (Act 7 of 2025), deemed from 1 July 2017), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 18 (Availability of credit in special circumstances), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 20 (Manner of distribution of credit by Input Service Distributor, as substituted from 1 April 2025), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 34 (Credit and debit notes; its footnotes record the proviso to sub-section (2) substituted from 1 October 2025 and a Finance Act, 2026 amendment not yet in force), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 38 (Communication of details of inward supplies and input tax credit), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 39 (Furnishing of returns), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 41 (Availment of input tax credit), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 44 (Annual return), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 49 (Payment of tax, interest, penalty and other amounts), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 50 (Interest on delayed payment of tax; the section 50(3) rate of 18% is set by Notification No. 13/2017-Central Tax of 28 June 2017, as amended by the Finance Act, 2022), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 54 (Refund of tax), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 73 (determination of tax, or of input tax credit wrongly availed or utilised, for periods up to FY 2023-24, in cases other than fraud), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 74 (the same determination for periods up to FY 2023-24 where there is fraud, wilful misstatement or suppression of facts), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 74A (determination of tax, or of input tax credit wrongly availed or utilised, for any reason, for FY 2024-25 onward), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Parliament of India, Central Goods and Services Tax Act, 2017, section 122 (Penalty for certain offences), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 36 (Documentary requirements and conditions for claiming input tax credit), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 37 (Reversal of input tax credit in the case of non-payment of consideration), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 37A (Reversal of input tax credit in the case of non-payment of tax by the supplier and re-availment thereof), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 38 (Claim of credit by a banking company or a financial institution), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 39 (Procedure for distribution of input tax credit by Input Service Distributor), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 42 (Manner of determination of input tax credit in respect of inputs or input services and reversal thereof), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 43 (Manner of determination of input tax credit in respect of capital goods and reversal thereof in certain cases), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 48 (Manner of issuing invoice), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 61 (Form and manner of furnishing of return), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 80 (Annual return), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 86A (Conditions of use of amount available in electronic credit ledger), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 86B (Restrictions on use of amount available in electronic credit ledger), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 88A (Order of utilization of input tax credit), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 88B (Manner of calculating interest on delayed payment of tax), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Ministry of Finance (CBIC), Central Goods and Services Tax Rules, 2017, rule 88D (Manner of dealing with difference in input tax credit available in auto-generated statement containing the details of input tax credit and that availed in return), text via the CBIC GST law repository, accessed 25 September 2026, taxinformation.cbic.gov.in.
Central Board of Indirect Taxes and Customs (GST Policy Wing), Circular No. 170/02/2022-GST, 6 July 2022, Mandatory furnishing of correct and proper information of inter-State supplies and amount of ineligible/blocked Input Tax Credit and reversal thereof in return in FORM GSTR-3B and statement in FORM GSTR-1, cbic-gst.gov.in (PDF).
Central Board of Indirect Taxes and Customs (GST Policy Wing), Circular No. 183/15/2022-GST, 27 December 2022, Clarification to deal with difference in Input Tax Credit (ITC) availed in FORM GSTR-3B as compared to that detailed in FORM GSTR-2A for FY 2017-18 and 2018-19, cbic-gst.gov.in (PDF).
Central Board of Indirect Taxes and Customs (GST Policy Wing), Circular No. 237/31/2024-GST, 15 October 2024, Clarifying the issues regarding implementation of provisions of sub-section (5) and sub-section (6) in section 16 of CGST Act, 2017, cbic-gst.gov.in (PDF).
Central Board of Indirect Taxes and Customs, Circular No. 251/08/2025-GST, 12 September 2025 (clarification on secondary or post-sale discounts, including financial or commercial credit notes), the Maharashtra State Tax Department's copy, annexed to its Trade Circular No. 14T of 2025 of 8 October 2025, mahagst.gov.in (PDF).
Goods and Services Tax Network, Invoice Management System (revised advisory, undated), tutorial.gst.gov.in (PDF).
Goods and Services Tax Network, FAQ on New Changes in Invoice Management System (IMS) from October 2025 Tax Period (undated), tutorial.gst.gov.in (PDF).
Goods and Services Tax Network, advisory on the IMS offline tool (advisory, 23 April 2026, the date in GSTN's file name), tutorial.gst.gov.in (PDF).
Goods and Services Tax Network, Introducing Electronic Credit Reversal and Re-claimed Statement (undated advisory introducing the statement from the August 2023 return period), tutorial.gst.gov.in (PDF).
Goods and Services Tax Network, Advisory & FAQ on Electronic Credit Reversal and Re-claimed Statement & RCM Liability/ITC Statement, 29 December 2025, GST portal printout hosted by the Maharashtra State Tax Department, mahagst.gov.in (PDF).
Goods and Services Tax Network, Barring of GST Return on expiry of three years, advisory of 7 June 2025, GST portal printout hosted by the Maharashtra State Tax Department, mahagst.gov.in (PDF).
Goods and Services Tax Network, Advisory regarding non-editable of auto-populated liability in GSTR-3B, 7 June 2025, GST portal printout hosted by the Maharashtra State Tax Department, mahagst.gov.in (PDF).
Invoice Registration Portal 6 (a GSTN-authorised e-invoice registration portal), Revised Time Limit for E-Invoice Reporting for Businesses with AATO of Rs 10 Crores & Above, 27 March 2025, einvoice6.gst.gov.in.
Department of Financial Services, Ministry of Finance, Exemption of GST on all Individual Life Insurance and Health Insurance Policies (FAQ), 5 January 2026, financialservices.gov.in.
Press Information Bureau, Ministry of Finance, Frequently Asked Questions (FAQs) on the decisions of the 56th GST Council held in New Delhi, 3 September 2025, pib.gov.in.
Press Information Bureau, Ministry of Finance, release on the launch of the Goods and Services Tax Appellate Tribunal (GSTAT) in New Delhi, 24 September 2025, pib.gov.in.
Press Information Bureau, Ministry of Finance, 29,273 bogus firms involved in suspected Input Tax Credit (ITC) evasion of Rs. 44,015 crore detected in a sustained drive against non-existent taxpayers by GST formations across the country since May 2023; 121 arrested, 7 January 2024, pib.gov.in.
Supreme Court of India, Chief Commissioner of Central Goods and Service Tax & Ors. v. M/s Safari Retreats Private Ltd. & Ors., Civil Appeal No. 2948 of 2023, 2024 INSC 756, judgment of 3 October 2024, text via Indian Kanoon, indiankanoon.org.
Supreme Court of India, The Assistant Commissioner of State Tax & Ors. v. Suncraft Energy Private Limited & Ors., SLP (C) Nos. 27827-27828/2023, order of 14 December 2023 dismissing the special leave petitions, text via Indian Kanoon, indiankanoon.org.
Calcutta High Court, Suncraft Energy Private Limited and another v. The Assistant Commissioner, State Tax, Ballygunge Charge and others, MAT 1218 of 2023, judgment of 2 August 2023, text via Indian Kanoon, indiankanoon.org.
Supreme Court of India, The State of Karnataka v. M/s Ecom Gill Coffee Trading Private Limited, Civil Appeal No. 230 of 2023, judgment of 13 March 2023 (section 70 of the Karnataka Value Added Tax Act, 2003), text via Indian Kanoon, indiankanoon.org.
Madras High Court (Madurai Bench), M/s D.Y. Beathel Enterprises v. The State Tax Officer (Data Cell), W.P.(MD) No. 2127 of 2021 and connected petitions, order of 24 February 2021, text via Indian Kanoon, indiankanoon.org.
Disclaimer
This article is for educational and general business information only and is not legal, tax, accounting or financial advice. GST law, rates, due dates and portal rules change often; figures and dates are stated as at 25 September 2026, the Last verified date above, and assume no extension is notified after that date. The example company and every figure derived from it are hypothetical. Confirm how the rules apply to your business with a qualified professional before acting.
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