Important Things You Should Know About the Income-tax Act, 2025

Important Things You Should Know About

The Income-Tax Act, 2025

A plain-language guide for salaried people, professionals, and businesses

Quick snapshot

Act 30 of 2025 received Presidential assent on 21 August 2025 and came into force on 1 April 2026. It replaces the Income-tax Act, 1961 for income of Tax Year 2026–27 onwards. Structure: 23 chapters, 536 sections, 16 schedules. Policy rates were not rewritten by the Act itself — the rewrite is about simpler language, fewer sections, and a single “tax year”.

1. Why a brand-new Act?

The 1961 law had grown into a dense patchwork of amendments, explanations and provisos. The 2025 Act was enacted to consolidate and amend the law relating to income-tax: drop obsolete clauses, use plainer drafting, put related rules next to each other, and bake digital administration into the statute.

It is not a new tax. The Government and professional summaries have been consistent: rates, heads of income and the core computation logic stay aligned with the 1961 framework as updated by recent Finance Acts. What you feel day-to-day is cleaner numbering, a single clock called the tax year, and fewer places where two old terms used to collide.

2. When it actually applies

The cut-off that trips people up

The Act “came into force” on 1 April 2026. That does not mean every return filed after that date uses the new book.

•         Income earned in FY 2025–26 (filed in 2026, typically by 31 July 2026 for individuals) is still assessed under the Income-tax Act, 1961.

•         Income of Tax Year 2026–27 (1 April 2026 – 31 March 2027) is the first year governed by the Income-tax Act, 2025.

Pending proceedings, appeals and assessments under the old Act are saved. Do not mix section numbers from the two statutes when you write to the department.

3. The single “Tax Year”

The dual language of “previous year” and “assessment year” is gone. A tax year is the twelve-month period beginning 1 April. You earn income in a tax year and file for that same tax year in the following months. The period after the tax year is sometimes described as the succeeding tax year for filing and processing.

Why it matters: notices, due dates and ITR labels stop bouncing between two year-codes. Read every new form as “Tax Year 20XX–XX”, not “AY 20XX–XX”, once you are on the 2025 Act.

4. Personal tax: new regime is the default

The new personal regime is the statutory default. You can still opt for the old regime if the classic deductions (80C-style investments, 80D medical insurance, home-loan interest, and so on) beat the simpler slabs. Most middle-income salaried taxpayers find the default cheaper once the rebate is applied.

New-regime slabs (as embedded in the Act / Finance updates)

Total income (₹)	Rate
Up to 4,00,000	Nil
4,00,001 – 8,00,000	5%
8,00,001 – 12,00,000	10%
12,00,001 – 16,00,000	15%
16,00,001 – 20,00,000	20%
20,00,001 – 24,00,000	25%
Above 24,00,000	30%

The ₹12-lakh zero-tax story

Resident individuals under the new regime get a rebate so that tax on ordinary slab income is wiped out up to about ₹12 lakh. Salaried taxpayers also keep a standard deduction (₹75,000 in the structure widely cited with the 2025 Budget design), which lifts the effective zero-tax band toward ₹12.75 lakh. Special-rate income such as certain capital gains is kept outside that rebate math — do not assume “₹12 lakh total receipts = zero tax” if you sold shares or a house.

Old regime still exists

•         Basic exemption: ₹2.5 lakh (below 60), ₹3 lakh (60–80), ₹5 lakh (super senior) — plus Chapter VI-A deductions.

•         Useful if you have large 80C + NPS + health insurance + home-loan interest that the default regime does not fully replace.

•         You must actively choose it. Silence means the new regime.

5. Capital gains — the sharpest rewrite

Long-term capital gains are taxed at a uniform 12.5% without indexation across listed equity, unlisted shares, real estate, gold, debt funds and other capital assets, subject to the holding-period rules in the Act. Short-term gains on listed equity and equity-oriented funds sit at 20% (up from the older 15% special rate).

Plan sales with the new holding periods and the “no indexation” LTCG rate in mind. Property bought years ago can look very different on a spreadsheet once inflation adjustment is off the table.

6. Salary, HRA and allowances

•         Salary definitions were rewritten in simpler sub-sections (old s.17 maps near new s.16).

•         The 50% HRA metro treatment expanded from four cities to eight: Ahmedabad, Bengaluru, Hyderabad and Pune join the original metros under the 2026 Rules.

•         Children’s education allowance and hostel allowance limits were raised (widely reported at ₹3,000 and ₹9,000 per child per month respectively).

•         Standard deduction for salary continues under the default regime.

7. TDS, TCS and refunds

Non-salary TDS is largely consolidated (old 193–194T family → a single operational section in the new Act, commonly cited as section 393, with salary TDS around section 392). Thresholds were relaxed in the 2025 Budget cycle — for example higher interest thresholds before TDS kicks in, especially for senior citizens.

A taxpayer-friendly change highlighted in explainers: TDS refunds can still be claimed even if the return is filed after the due date, without the old “late return, lost refund” sting. Confirm the exact conditions on the live form before you rely on it.

8. Returns, updated returns and faceless default

•         ITR filing lives under a new section number (commonly mapped from old 139 → new 263).

•         The updated-return window is extended to 48 months — more time to correct an under-report, with the usual extra tax cost.

•         Faceless assessment is the statutory default, not just an administrative experiment.

•         Forms and Rules 2026 cut the old rule-book and form count sharply; labels will look unfamiliar the first year.

9. Virtual digital assets

Cryptocurrencies, NFTs and other notified virtual digital assets are defined in the statute instead of living only in Finance Act patches. Treat crypto as a capital asset with the VDA computation and TDS rules that the Act and Rules prescribe. Informal “cash-like” use is still a reporting and penalty risk.

10. Businesses, companies and trusts

•         Corporate rates and most computation heads stay policy-continuous with 1961 + recent Finance Acts.

•         MAT has been under further rationalisation in subsequent Budget language (including a lower MAT rate discussion for companies moving regimes) — check the Finance Act year that applies to your tax year.

•         AMT on LLPs was eased / removed in the reform package described by professional firms.

•         Charitable trust conditions were restated more tightly; registration and application-of-income rules deserve a fresh read.

•         Transfer-pricing “associated enterprise” language was cleaned up.

11. Section numbers you used to quote from memory

Muscle memory will fail you. A few everyday mappings:

Topic	1961 Act	2025 Act
Charge of tax	s.4	s.3
Salary	s.17	s.16
Business income	s.28	s.26
Capital gains charge	s.45	s.67
ITR filing	s.139	s.263
TDS on salary	s.192	s.392
80C-type investments	s.80C	s.105
Medical insurance	s.80D	s.109

Always quote the 2025 section when the tax year is 2026–27 or later. Old numbers on a new-year notice invite avoidable correspondence.

12. What you should actually do this week

•         Decide new vs old regime with a real computation — include capital gains and employer NPS, not just salary.

•         Update Form 12BB / investment proofs and HRA city category if you live in one of the four newly treated metros.

•         If you hold property, gold or unlisted shares, model LTCG at 12.5% without indexation before you sell.

•         Map every recurring TDS section your payroll or vendor team uses to the 2025 table.

•         Keep FY 2025–26 papers under the 1961 Act; start a clean folder labelled Tax Year 2026–27.

•         Watch AIS/TIS before you file. The law is simpler; the data trail is not.

13. A note on later Budgets

Finance Acts after 2025 continue to amend the 2025 Act the way they used to amend the 1961 Act. Slab tweaks, MAT rate talk, data-centre holidays, MACT interest exemptions and TDS classifications of manpower supply have already appeared in subsequent Budget language. Treat this blog as a map of the new code, then overlay the Finance Act of the year you are filing for.

Bottom line

The Income-tax Act, 2025 is a new book with mostly familiar arithmetic. Learn the tax-year clock, the default slabs plus ₹12-lakh rebate, the 12.5% no-indexation LTCG rate, the new section numbers, and which financial year still lives under 1961. Do that, and the colourful headings above become a checklist instead of a surprise.

Sources: official gazette notification of Act 30 of 2025; CBDT press release dated 1 April 2026; public explainers from Income Tax Department materials, News18, ClearTax, Deloitte tax@hand, PwC Tax Insights, and professional section-mapping notes. Figures can change with the Finance Act of the relevant year. This is general information, not advice.