New Income Tax Act 2025: A Business Compliance Guide for 2026-27
Updated: Jul 10
After governing India's direct taxes for more than six decades, the Income-tax Act, 1961 has been retired. The new Income Tax Act 2025 replaced it and has been in force since 1 April 2026, collapsing more than 800 sections into 536 and dropping the confusing "previous year" and "assessment year" language for a single "tax year." For a law that shaped how every Indian business, from a two-person consultancy to a listed company, calculated and paid tax for 60 years, that is a rare kind of reset, and it is now the operative law.
Here's the part that gets missed in the headlines. The 2025 Act is a rewrite, not a tax hike. It reorganises, renumbers and simplifies a rulebook that had swollen with amendments, provisos and cross-references over six decades. Core tax policy, the rates, the heads of income, the way profits are computed, stays largely where the Finance Act leaves it each year.
The timeline itself tells the story of how quickly this moved. The Bill cleared the Lok Sabha on 11 August 2025 and the Rajya Sabha on 12 August 2025. It received Presidential assent on 21 August 2025 and was gazetted the next day, 22 August 2025. And the Act now sits on a tax system that had already gone digital-first years earlier: an e-filing portal that pre-fills your return, an Annual Information Statement that aggregates your financial footprint, and faceless assessment that removed the in-person tax officer entirely.
So for a founder in Gurugram running a lean SaaS team, or a US-based finance head overseeing an Indian subsidiary, the same line in the calendar matters. Tax years beginning on or after 1 April 2026 fall under the new code, and India is now in the first such year, 2026-27. The interesting question isn't really "did my rate change?" (for most businesses, it didn't). It's "how much operational plumbing has already had to change quietly underneath?"
Because for businesses, the pressure that bites isn't only the Act. On the GST side, digital compliance already runs close to real time, and a company above ₹10 crore turnover must report every invoice to the Invoice Registration Portal within 30 days, or the portal rejects it. Miss that window and the invoice, along with the input tax credit that flows from it downstream, stalls. The Act is the headline, but the operational reality is a tighter, more automated, more real-time compliance year that is already under way.
Think of it this way. The 1961 rulebook has been swapped out at the same moment the machinery around it, filing, reconciliation, invoicing, assessment, has become faster and less forgiving. A late payment to a small supplier can now cost you a tax deduction. A stale section reference buried in your payroll software can quietly break a challan. None of that is a rate change. All of it now lands on your finance function together.
Here's the short version of what the new law is and how it now applies.
The Income-tax Act, 2025 is India's direct-tax code, in force since 1 April 2026, that replaced the Income-tax Act, 1961. It reorganises more than 800 sections into 536 and replaces "previous year" and "assessment year" with a single "tax year," simplifying compliance without changing core tax rates.
Table of Contents
What is the new Income Tax Act 2025?
India's direct-tax law is being rewritten for the first time in more than 60 years. That context matters, because it tells you the scale of what you're dealing with. This isn't a Budget tweak or a fresh notification. It's a wholesale replacement of the statute that has defined income tax for businesses and individuals since 1961.
The Income-tax Act, 2025 is the new direct-tax code, and it has been in force since 1 April 2026, having repealed the Income-tax Act, 1961 (Income Tax Department, Objective and scope of the New Act). The stated aim is simplification: a leaner, more readable statute with fewer sections, tighter drafting and less cross-referencing. It is not a new set of taxes. The rewrite reorganises how the law is structured and worded, not how much you owe.
When the Income Tax Act 2025 came into effect
The commencement date is the anchor for every business decision here. Tax years beginning on or after 1 April 2026 are governed by the 2025 Act; anything before that stays under the 1961 Act. So a Gurugram SaaS founder and a US investor with an India subsidiary both sit on the same side of the 1-April-2026 line, regardless of size or sector. There was no phased rollout by turnover and no opt-in window. The date was fixed, and India is now in the first tax year under the new code.
What it does (and does not) change
Here's what experienced finance teams flag first: this is a structural rewrite of 536 sections, not a policy overhaul. Rates, exemptions and the heads of income are set by the annual Finance Act, and the 2025 Act doesn't rewrite those. A common question founders raise is a version of "does this change my tax rate?" The short answer is no. The Act reorganises the rulebook; the numbers you actually pay continue to follow the Finance Act, as they always have.
The pitfall worth naming upfront? Treating "new Act" as "new taxes" and over-reacting. Some businesses scramble to restructure or defer decisions on the assumption that the new Act brings a fresh tax burden. It doesn't. What it brings is renumbering, new terminology and a tighter digital compliance environment, which is a different problem, and the one this guide is built around. If you want the statute in full, the Income-tax Act, 2025 on the Income Tax Department portal carries the complete text.
Why India needed a new income- Tax Law
Why replace a law that worked, more or less, for six decades? Because "worked" and "workable" drifted apart. The 1961 Act accreted more than 800 sections and layer upon layer of amendments, provisos and explanations over 60 years, until even seasoned practitioners spent real time tracing a single provision through cross-references.
Over those decades, almost every Finance Act added, deleted or amended provisions. The result was a statute where a single obligation might sit across a main section, a proviso, an explanation and a separate rule. The 2025 rewrite cuts the section count from 819 to 536, expands schedules from 14 to 16, consolidates rules from 511 to 333, and reduces prescribed forms from 399 to 190 (Income Tax Department, Objective and scope of the New Act). That's the "simplification" the drafters keep pointing to.
What does simplification mean in practice? For a Chartered Accountant or an in-house finance team, it means fewer places to look and fewer cross-referenced provisos to reconcile when they answer a client's or a director's question. TDS provisions that were scattered get grouped. Redundant explanations get dropped. The intent is a rulebook a competent reader can navigate without a decade of muscle memory.
But here's the honest caveat, and it's the one competitors gloss over. A common worry is "is anything actually different for me?" On the tax you pay, mostly no. On how you reference the law, quite a lot. Because the mistake we see coming is treating simplification as purely cosmetic. Renumbering has a real operational cost when your systems, contracts and SOPs all cite the old numbers, which is exactly why the prep and pitfalls sections later in this guide matter.
Income Tax Act 2025 vs 1961: What actually changed
Most readers landing here want a side-by-side, not three paragraphs of prose. So here it is, plainly. The changes fall into three buckets: structure, language, and what stayed the same.
Structural comparison (sections, schedules, rules, forms)
The headline structural shifts are these (Income Tax Department, Objective and scope of the New Act):
The 2025 Act is organised into 23 chapters, part of the same consolidation exercise that cut the section count.
For a payroll or accounting team, this table isn't trivia. It's a mapping exercise. Every place your systems reference a 1961 section number, a TDS code, an ITR form, now needs to point at the 2025 equivalent. Fewer forms and fewer sections is genuinely good news for the long run. It's the transition that takes work.
Language and terminology changes
The most visible language change is the retirement of "previous year" and "assessment year" in favour of a single "tax year" (covered in depth in the next section). The drafting style also shifts toward plainer language, shorter provisos and consolidated provisions, which is the whole point of the exercise. What experienced practitioners know is that terminology changes ripple outward: templates, letters to tax authorities, internal notes and client communications all carry the old vocabulary and will need updating.
What stayed the same
And this is where the panic usually deflates. Rates, slabs and the heads of income are substantively preserved. A frequent question is "did my slab change?" No, the Act itself doesn't set slabs; the Finance Act does, and it continues to. The pitfall here is assuming section numbers carried over one-to-one. They did not. A provision you knew as a particular 1961 section may now sit under an entirely different number, which is precisely why blind copy-paste of old references into 2026 filings is a mistake waiting to happen.
The "Tax Year": How it replaces previous year and assessment year
For decades, "previous year versus assessment year" quietly confused taxpayers, and honestly, plenty of professionals too. You earned income in one year (the previous year) but were assessed on it in the next (the assessment year), so FY 2024-25 income was assessed in AY 2025-26. The 2025 Act clears this up with a single concept.
Previous year and assessment year become one tax year
Under the new code, "tax year" replaces both terms, and it corresponds to the erstwhile "previous year," the twelve months in which income is actually earned (Income Tax Department, Objective and scope of the New Act FAQs). The separate "assessment year" label is retired. So instead of juggling two overlapping years on every form and notice, you reference one: the tax year in which the income arose. It's a small change in words with a surprisingly large effect on clarity.
Tax year for a newly set-up business
Can a tax year be shorter than twelve months? For a new business, effectively yes. When a company is incorporated or a profession is newly set up part-way through the year, its first tax year can run from the date of setup to the following 31 March. Think of a startup incorporated in November: its opening tax year covers November to 31 March, not a full twelve months, which mirrors how the "previous year" worked for new entities. So the practical mechanics feel familiar even under the new label.
How the transition works for pending years
Here's the question that still matters for FY 2025-26: which law applies? The 1961 Act continues to govern tax years that began before 1 April 2026, under the repeal-and-savings provisions in Section 536 of the 2025 Act (Section 536(2)(c) preserves the old Act for proceedings relating to a tax year beginning before that date). So income for FY 2025-26 is still dealt with under the old law, while tax years starting on or after 1 April 2026 fall under the 2025 Act.
A common question is "do I file under old or new law for FY 2025-26?" The old one. What experienced operators know is that the switchover is where mislabelling happens: putting the wrong year reference on a filing during the transition creates avoidable friction. The safer approach is to treat FY 2025-26 as a clean 1961-Act year and start applying the new terminology only for tax years beginning 1 April 2026 onward.
What changes for businesses, founders and MSMEs
Most coverage of the 2025 Act skews toward individual taxpayers: slabs, salary deductions, HRA. Founders and finance teams need a different lens. So what actually changes when you run a company, an LLP or a proprietorship? Less than you'd fear on rates, more than you'd expect on operations.
Private limited companies, LLPs and sole proprietors
Corporate tax rates are set by the Finance Act, not the 2025 Act, so the Act itself doesn't change what a private limited company, an LLP or a sole proprietor pays (Income-tax Act, 2025). What changes is the reference framework: the sections you cite in filings, TDS returns and audit reports carry new numbers. For a private limited company with a formal finance function, that's a controlled remap. For a sole proprietor doing their own books, it's mostly about using the current-year forms and codes correctly.
Freelancers and independent consultants sit in the same boat as small proprietors here. Their income computation doesn't change because of the Act; their form numbers and section references do. The practical reality is that most one-person operations feel this through their accounting software and their CA, not through any change in what they owe.
Startups: Startup India, angel tax and presumptive taxation
Presumptive taxation, the scheme that lets eligible small businesses and professionals declare income at a prescribed rate without full books (44AD for businesses, 44ADA for professionals under the old numbering), continues under the new Act. A common founder question is whether angel tax still bites. The direction of travel on angel tax has been toward relief in recent Finance Acts, and the 2025 Act's job is structure, not policy, so the position on any given year is set by the Finance Act, and a founder should confirm the current-year stance with their advisor rather than assume.
For a startup registered under Startup India, the recognised-entity benefits and exemptions flow from the relevant schemes and Finance Act provisions, which the 2025 Act reorganises rather than repeals. The point for a founder is simple: your eligibility logic doesn't vanish, but the section numbers you or your CA quote to claim it will move.
The MSME 45-day payment rule (Section 43B(h))
This one deserves a flag, because it turns a cash-flow habit into a tax consequence. The rule (introduced as Section 43B(h) under the 1961 Act via the Finance Act 2023, effective 1 April 2024) disallows a deduction for amounts owed to a registered micro or small enterprise unless paid within the statutory window, 45 days where there's a written agreement, 15 days where there isn't (Income Tax Department, Objective and scope of the New Act). Under the 2025 Act, the old Section 43B carries over as Section 37 ("Certain deductions to be allowed only on actual payment"), with the MSME disallowance sitting at Section 37(2)(g). Pay a small supplier late and the deduction is deferred to the year you actually pay, which pushes up your taxable profit in the current year.
In practice, a lean D2C brand or agency that habitually stretches supplier payments to 60 or 90 days can find itself with a larger tax bill purely from timing. This rule carries into the new regime in substance, so it stays on every founder's radar. And it's a neat illustration of the broader theme: the same rupee outflow now has both a cash-flow and a tax-timing dimension.
Section renumbering as a software, payroll and contracts project
Here's the silent cost almost nobody budgets for. Every SOP, payroll configuration, TDS workflow and vendor contract that cites a 1961-Act section will need to be remapped to the 2025 numbering. A 12-person e-commerce startup might have old section references baked into its accounting software's TDS codes, its offer letters, its vendor MSAs and its internal finance checklist. None of that updates itself.
A common question is "do I need to update my accounting software?" Yes, and with the new Act now live it is urgent. The downstream effect most teams underestimate is continuity: if a payroll system still deducts TDS against an outdated section code, the paperwork carries stale references that create reconciliation headaches later. Treat the remap as a small project with an owner and a deadline, not an afterthought, and you turn a lurking risk into a checklist item. The bigger pitfall isn't the renumbering itself; it's discovering it once filings are already going out.
TDS, TCS and capital gains under the new Act
TDS is where most businesses actually feel tax law, not once a year, but every month, in every payroll run and vendor payment. So when the statute renumbers, this is the area where a wrong code shows up fastest. That's why it's worth a close look even though the underlying obligations are largely continuous.
How TDS provisions were consolidated
One of the drafting goals of the 2025 Act was to consolidate the sprawling TDS provisions of the 1961 Act into a tighter, better-organised set (Income-tax Act, 2025). A frequent practitioner question is "how many TDS sections now versus before?" The direction is fewer and more consolidated, with related deduction rules grouped rather than scattered across the statute. The exact section numbers under the new Act are what your finance team will need to pin down, because the deduction logic mostly survives even as the references move.
What experienced operators know is that consolidation cuts cross-referencing but demands a one-time remap. The TDS you deduct on a contractor payment or a rent payment doesn't change in character; the section you quote on the challan and the return does. Update the mapping once, test it, and the monthly grind continues as before.
TCS and PAN-based challans
Tax Collected at Source (TCS) and the challan mechanics for depositing deducted or collected tax carry into the new framework with renumbered references under the 2025 Act. For a finance team, the operational touchpoint is the deduction and collection codes used in payroll and accounts-payable systems. Those codes map to sections, and when the sections move, the codes need checking. This is exactly the kind of behind-the-scenes update that's invisible until a challan bounces.
Capital gains and holding periods
Capital-gains treatment, short-term versus long-term, holding periods and the applicable rates, is set through the heads-of-income framework and the Finance Act, which the 2025 Act reorganises rather than rewrites in substance. So the way a business computes gain on selling an asset or an investment continues under the same logic, referenced through the new numbering. The recurring pitfall across all three, TDS, TCS and capital gains, is the same: using outdated section codes in challans and returns now that the 2025 Act is live. Fix the mapping now, and none of this bites.
How digital income-tax filing changes: portal, AIS, TIS and pre-filled ITR
Here's a point that reframes the whole conversation: filing had already gone digital-first well before the Act arrived. The 2025 Act modernizes the statute, but the machinery, portal, pre-filled returns, faceless assessment, was built over the preceding years. So "how does filing change?" is really two questions: what the Act adds, and what was already there that businesses still under-use.
The e-filing portal and pre-filled returns
The income-tax e-filing portal is the single front door for returns, and it now pre-fills a large share of your data before you type anything (Income Tax Department e-Filing portal). It pulls salary, interest, dividend, securities-transaction and other reported information, and increasingly reflects figures like GST turnover and foreign-remittance data, so the return arrives partly populated (Income Tax Department, FAQs on AIS). For a founder, that means the starting point isn't a blank form; it's a draft the system has assembled from what third parties already reported about you.
Here's what that actually looks like in practice. A founder reconciling pre-filled GST turnover against their own books before submitting is doing the single most valuable thing on the portal: checking the machine's version against reality. Because the data is only as good as its sources, and mismatches are where scrutiny starts.
AIS, TIS and Form 26AS: What each is
Three statements confuse people because they overlap. Here's the clean split:
In short, AIS is the source data, TIS is the pre-fill summary built from it, and Form 26AS has narrowed to focus on tax credits (per the AIS FAQs). What experienced finance teams do is treat the AIS as the master reconciliation document, because if something's wrong there, it flows into everything downstream.
New ITR forms, due dates, PAN-Aadhaar and e-verification
ITR forms carry renumbered references under the new framework, and the applicable form still depends on the nature of income and the type of taxpayer, company, firm, professional, salaried individual (Income Tax Department, Income Tax Returns e-filing help). Due dates and the requirement to link PAN with Aadhaar, plus e-verification of the return within the prescribed window, remain part of the filing discipline. A common question is "will I file differently?" Mechanically, similar; the forms and references update, the process is the same portal-driven flow.
The pitfall here is the one that bridges into assessment: trusting pre-filled data blindly. If the portal's pre-filled GST turnover or interest figure is wrong and you submit it unchecked, the mismatch can surface later during scrutiny. The better approach, in our view, is to reconcile every pre-filled line against your own books before you hit submit. Which leads directly to how assessment now works.
Faceless assessment becomes statutory
Assessment used to mean a visit, a file, and a conversation with an assessing officer. That changed in 2020, when assessment moved to a faceless model run through the National Faceless Assessment Centre (NFAC), removing the in-person interaction entirely. The 2025 Act takes the next step.
What faceless assessment is and how NFAC works
Faceless assessment means your return is assessed without you ever meeting a specific officer: cases are allocated electronically, notices arrive through the portal, and responses go back the same way, coordinated centrally through the NFAC. The 2025 Act writes this framework into statute at Section 273 ("Faceless assessment"), rather than leaving it as the executive scheme it was under Section 144B of the 1961 Act (Income-tax Act, 2025). For a business, that's a meaningful shift in status: a process that was administrative is now anchored in the law itself.
Personal hearings and responding to notices
Can you still be heard? Yes, a personal hearing is available on request, typically conducted through video, so "faceless" doesn't mean "voiceless." Here's what that looks like operationally: a business responding to an e-notice logs into the portal, reads the query, and uploads its response and supporting documents within the response window. What experienced operators know is that documentation matters more when there's no officer to meet across a desk. Your paper trail is your argument.
A common concern is "what are the problems with faceless assessment?" The honest answer is that mismatches and timelines cause most of the friction: an AIS, GST-turnover or ITR discrepancy gets auto-flagged, and the clock on responding is real. And that's the pitfall: missing a notice deadline can trigger a penalty, and because AIS, GST and ITR data are cross-checked automatically, the flags are more frequent than under the old manual system. Watch the portal, and treat every notice as time-sensitive.
GST digital compliance now in effect
Here's the twist that catches businesses off guard: the income-tax Act wasn't the only thing that changed on 1 April 2026. GST compliance, which already runs close to real time, brought its own set of changes the same year, and they now apply. And for many businesses, the GST side is where the operational pinch is sharpest, because it touches every single invoice, not just the annual return.
E-invoicing thresholds and the ₹5 crore mandate
E-invoicing under GST applies to businesses at and above ₹5 crore aggregate annual turnover (AATO), meaning they must generate invoices through the Invoice Registration Portal and obtain an Invoice Reference Number (GST e-Invoice system, per CBIC Notification No. 10/2023-Central Tax). That threshold has ratcheted down over the years from ₹500 crore, so a business that was once comfortably outside e-invoicing may now be squarely inside it. The penalty exposure for not issuing a required e-invoice is real, so knowing which side of ₹5 crore you sit on is the first check.
The 30-day IRP reporting rule (₹10 crore+)
This is the one that reshapes daily workflow. Businesses with AATO of ₹10 crore and above must report invoices, credit notes and debit notes to the IRP within 30 days of the document date, effective 1 April 2025, or the portal rejects the document (GSTN advisory, Revised time limit for e-invoice reporting). Think of a wholesaler at ₹12 crore turnover: every invoice is now on a 30-day report-or-reject clock. Report late and the invoice can't be validated, which stalls the input tax credit your customer expects downstream. The knock-on effect is why this rule changes behaviour, not just paperwork.
Fresh invoice series, IMS and e-way bill changes now live
Several GST changes clustered on 1 April 2026 and now apply. Businesses were expected to start a fresh invoice series at the beginning of the year, and the Invoice Management System (IMS), a facility for accepting, rejecting or holding inbound invoices to manage input tax credit, is now a central part of the workflow (Central Board of Indirect Taxes and Customs, GST portal). E-way bill rules around Ship-To GSTIN details also tightened. A frequent question is "did I need a fresh invoice series?" Yes, it should have been reset at the year start, which is exactly the kind of item on the compliance checklist below.
Where GST digital compliance is heading
Looking ahead, early signals point one way: more real-time, more auto-matched, lower thresholds. There have been proposals to lower the ₹5 crore e-invoicing threshold further toward ₹2 crore, which would pull far more small businesses into mandatory e-invoicing (worth flagging clearly: this is proposed, not enacted, so treat it as a planning signal, not a current rule). The second-order effect operators expect is that as AIS, GST turnover and ITR data converge, the accuracy of your source records, not the filing itself, becomes the real compliance battleground.
What businesses must do now under the new Act
"What do I actually do now?" is the question competitors answer weakly, and it's the one founders care about most. The good news is that the to-do list is short and defined. It's not about panic; it's about closing off a handful of tasks in the current tax year so your filings don't carry stale references. If you have not done them yet, act now.
Your 2026-27 compliance checklist
Here's a practical, ordered checklist for a founder or finance lead. These items should already be in place for the current tax year; if any are not, work through them now:
Start a fresh GST invoice series for the current year, reset at 1 April 2026 (CBIC GST portal).
Renew your Letter of Undertaking (LUT) if you export goods or services without paying IGST, since the LUT is annual.
Check your e-invoicing threshold against your latest AATO, because crossing ₹5 crore (or ₹10 crore for the 30-day rule) changes your obligations.
Remap accounting-software section codes so TDS, TCS and reporting codes point at the 2025-Act numbering, not the 1961 references.
Note the ITR-form renumbering and confirm which current-year form applies to your entity type (Income Tax Department, Income Tax Returns e-filing help).
Reconcile your books against AIS and GST turnover so the numbers the portal already holds match what you file.
That's the core list. Confirm the software remap is done, and test your payroll TDS codes now rather than discovering a problem on the next challan of the current year.
Reconciling books, AIS and GST turnover
The reconciliation step deserves its own emphasis because it underpins everything else. Your AIS already carries a version of your financial year, TDS, reported transactions, GST turnover, and if your own books diverge from it, that gap is exactly what faceless assessment flags. What experienced operators know is that reconciling quarterly, not annually, turns a year-end scramble into a routine check. And that habit is the single best defence against an auto-generated notice.
The pitfall is leaving the remap and reconciliation undone. If you do, your filings go out carrying stale section references and unreconciled figures, and you spend the quarter firefighting instead of operating. A few hours spent on this now saves a great deal of friction later.
In-house vs outsourced compliance: Making the call
Put the last few sections together and a pattern emerges. Pre-filled returns, 30-day invoice reporting, auto-flagged mismatches and statutory faceless assessment turn compliance from a year-end event into continuous risk. The cost of sloppy books used to surface once a year; now it can surface any month. So the real question for a lean team is whether to carry all of this in-house or hand parts of it to someone who does it full-time.
When lean finance teams struggle with real-time compliance
A three-person startup with no full-time accountant feels this shift most acutely. When the founder is also the bookkeeper, the person reconciling AIS against the books, watching the 30-day e-invoice clock, and responding to portal notices is the same person trying to sell and build. That's workable at low volume and genuinely hard as transactions climb. The downstream effect operators see is that the moment invoice volume or vendor count crosses a threshold, real-time compliance stops being a monthly chore and becomes a standing liability.
A simple decision frame
So how do you decide? A plain frame beats agonising: weigh four things, namely transaction volume, complexity (multi-state GST, exports, payroll TDS across many vendors), your in-house capacity (do you have someone who owns this and won't drop it), and the cost of an error (a missed notice, a rejected invoice, a disallowed deduction). If volume and complexity are high and in-house capacity is thin, the error cost usually justifies outside help. If you're small and simple with a reliable person on it, in-house is fine.
The pitfall we see most often is under-staffing compliance until a mismatch or a notice forces a scramble, at which point the fix costs more than the prevention would have. If keeping up with real-time filing, e-invoicing and the shift to the new Act is pulling your team away from core work, Outsource360 offers outsourced tax registration and compliance support so deadlines don't slip. That's an option to weigh, not an obligation; plenty of well-run small teams handle this themselves.
Common mistakes and transition pitfalls
Every major transition produces the same recurring errors, and this one is no different. Knowing them in advance is most of the defense. Here are the three that will catch the most businesses, and how to sidestep each.
Assuming rates or slabs changed
The most common myth is that the new Act changed what you pay. It didn't. Rates and slabs are set by the Finance Act, and the 2025 Act reorganizes the statute without rewriting tax policy. The fix is simply not to make decisions, deferring income, restructuring, on the false premise of a rate change. Confirm the current-year rates from the Finance Act with your advisor, and treat the Act itself as a structural, not a fiscal, event.
Missing the section-renumbering remap
The pitfall with the longest tail is skipping the remap. Old section references live in your accounting software, payroll config, TDS codes, vendor contracts and internal SOPs, and none of them update automatically. If you file in the current year against 1961 numbers, you create reconciliation problems that surface weeks later. The fix is the checklist above: remap now, test early, assign an owner.
Filing under the wrong law during transition
The third trap is the transition boundary itself. Tax years beginning before 1 April 2026 stay under the 1961 Act; tax years from 1 April 2026 onward fall under the 2025 Act, so FY 2025-26 is still an old-law year, and pending assessments for earlier years continue under the law that governed them. The mistake is applying the new terminology or references to a year that still belongs to the old code. Keep the boundary crisp: old law up to the switch, new law after it, and you avoid mislabeled filings entirely.
Frequently Asked Questions (FAQ)
1. When does the new Income Tax Act 2025 come into effect?
The Income-tax Act, 2025 has been in force since 1 April 2026. Tax years beginning on or after that date are governed by the new Act, while earlier years remain under the Income-tax Act, 1961. There was no phased rollout by turnover, so the date applied to every business and taxpayer at once, and India is now in the first tax year under it.
2. Does the Income Tax Act 2025 replace the Income Tax Act 1961?
Yes. The 2025 Act repeals and replaces the Income-tax Act, 1961, which had governed India's direct taxes since 1 April 1962. The new code reorganizes and simplifies the statute rather than introducing new taxes, and the 1961 Act continues to apply to tax years that began before 1 April 2026.
3. How many sections does the new Income Tax Act 2025 have?
The 2025 Act has 536 sections and 16 schedules, down from 819 sections and 14 schedules in the 1961 Act. Prescribed rules were cut from 511 to 333 and forms from 399 to 190. The reduction reflects consolidation and simplified drafting, not the removal of substantive obligations.
4. Will income tax rates or slabs change under the Income Tax Act 2025?
No. Tax rates and slabs are set each year by the Finance Act, not by the Income-tax Act itself. The 2025 Act restructures and renumbers the statute while leaving core tax policy to the annual Finance Act. So a "new Act" does not by itself mean a new rate for your business or your income.
5. Is income up to ₹12 lakh still tax-free in FY 2026-27?
Slab and rebate figures, including any threshold up to which tax is effectively nil under the new regime, are set by the Finance Act, not by the 2025 Act. Because these numbers can change year to year, confirm the exact FY 2026-27 figures against the applicable Finance Act or with a qualified advisor before relying on them. The Act's rewrite does not itself alter these amounts.
6. What is a "tax year" under the Income Tax Act 2025?
A "tax year" is the twelve-month period in which income is earned, corresponding to what the 1961 Act called the "previous year." The 2025 Act uses this single concept in place of the old two-part system. For a newly set-up business, the first tax year can run from the date of setup to the following 31 March.
7. Is "assessment year" being scrapped?
Effectively yes. The 2025 Act replaces both "previous year" and "assessment year" with the single term "tax year." You no longer reference a separate assessment year on filings; income is dealt with by reference to the tax year in which it arose. This removes a long-standing source of confusion for taxpayers.
8. Do I need to take any action because of the new Income Tax Act 2025?
Yes, though the list is short and mostly operational. Businesses should remap section references in accounting and payroll software, note the ITR-form renumbering, reconcile books against AIS and GST turnover, and, on the GST side, start a fresh invoice series and check their e-invoicing threshold. None of this changes what you owe; it keeps your filings clean through the transition.
9. Does the Income Tax Act 2025 affect Private Limited Companies?
The Act affects how a private limited company references the law, not the rate it pays, since corporate rates come from the Finance Act. Sections cited in TDS returns, audit reports and filings carry new numbers under the 2025 Act. Companies with a formal finance function should treat this as a controlled remapping exercise now that the Act is in force.
10. How does the new Act impact startups registered under Startup India?
Startup India recognition benefits and related exemptions flow from the relevant schemes and Finance Act provisions, which the 2025 Act reorganises rather than removes. Presumptive taxation for eligible small businesses and professionals also continues. The main practical change for a startup is that the section numbers used to claim benefits move, so founders should confirm current references with their advisor.
11. Does the MSME 45-day payment rule (Section 43B(h)) still apply?
In substance, yes. The rule disallows an income-tax deduction for amounts owed to registered micro and small enterprises unless paid within the statutory window (45 days with a written agreement, 15 days without). It carries into the new regime, so paying small suppliers late can defer a deduction and raise your current-year taxable profit. Confirm the exact section number under the 2025 Act with your advisor.
12. How has TDS changed under the Income Tax Act 2025?
The scattered TDS provisions of the 1961 Act have been consolidated and renumbered into a tighter set under the 2025 Act. The character of what you deduct, on salaries, contractor payments, rent and so on, is largely unchanged, but the section codes you quote on challans and returns have moved. Finance teams should remap their deduction codes and test them now.
13. What is the difference between AIS, TIS and Form 26AS?
The Annual Information Statement (AIS) is the comprehensive source record of information reported about a taxpayer, including TDS/TCS, tax payments, GST turnover and foreign remittance. The Taxpayer Information Summary (TIS) is a summarized, category-wise view built from the AIS that feeds pre-filled returns. Form 26AS now focuses more narrowly on TDS/TCS and tax-paid details.
14. Is faceless assessment now part of the Act?
Yes. Faceless assessment, run through the National Faceless Assessment Centre since 2020, is written into statute under the 2025 Act rather than existing only as an executive scheme. Cases are allocated electronically and notices are handled through the portal, though a personal hearing is available on request. This gives the process a firmer legal footing.
15. What is the GST e-invoicing turnover limit in 2026?
E-invoicing under GST applies to businesses with aggregate annual turnover of ₹5 crore and above, who must generate invoices through the Invoice Registration Portal. Separately, businesses at ₹10 crore and above must report documents to the portal within 30 days of the invoice date. Proposals to lower the ₹5 crore threshold further exist but are not yet enacted.
16. Where can I read the full text of the Income Tax Act 2025?
The full text of the Income-tax Act, 2025 is published on the Income Tax Department's official portal, alongside its "Objective and scope of the New Act" pages and transition FAQs. Relying on the official source is the safest way to check a specific section, since the numbering differs from the 1961 Act. See the References section below for the official links.
References
The sources below are the official India government references for every rule, threshold, section count and date cited in this guide, live-verified against the official hosts (incometax.gov.in, GSTN e-invoice portals, and cbic-gst.gov.in).
Official guidance & regulations
Income Tax Department (CBDT)
Objective and scope of the New Act (Income-tax Act, 2025), Income Tax Department (CBDT). Source for commencement (1 April 2026), repeal of the 1961 Act, and structural counts (819→536 sections, 14→16 schedules, 511→333 rules, 399→190 forms, 23 chapters).
Objective and scope of the New Act, FAQs (Interplay and Transition), Income Tax Department (CBDT). Source for the "tax year" concept and the Section 536 transition/savings provisions.
FAQs on the Annual Information Statement (AIS), Income Tax Department (CBDT). Source for AIS, TIS and Form 26AS definitions and pre-filling.
Income Tax Returns, e-filing help (ITR forms and due dates), Income Tax Department. Source for ITR forms, due dates and e-verification.
Income-tax Act, 2025 (full text), Income Tax Department / Ministry of Law and Justice. Canonical statute reference (Section 37 / 37(2)(g) MSME disallowance; Section 273 faceless assessment; TDS/TCS provisions).
Income Tax Department e-Filing portal, Income Tax Department. The official portal for ITR filing, AIS access and pre-filled returns.
Central Board of Indirect Taxes and Customs (CBIC) / GSTN
e-Invoice system under GST (applicability, ₹5 crore AATO mandate), GSTN / CBIC (per CBIC Notification No. 10/2023-Central Tax, effective 1 August 2023).
Revised time limit for e-invoice reporting (AATO ₹10 crore and above), GSTN advisory (30-day IRP reporting rule, effective 1 April 2025).
Central Board of Indirect Taxes and Customs, GST portal, CBIC. Source for GST notifications, IMS and e-way bill guidance.
This article is for educational and general business information purposes only and does not constitute professional legal, financial, or tax advice. Tax law changes and applies differently to each business. For guidance specific to your situation, consult a qualified professional, the Income Tax Department, or a Chartered Accountant before acting.
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