New Income Tax Law from April 1, 2026: Key Changes in ITR Deadlines, STT, TCS and Tax Rules Explained

Income Tax Act 2025 to Take Effect from April 1, 2026: Major Changes for Taxpayers

India’s direct taxation system is set to undergo a significant transformation starting April 1, 2026, when the new Income Tax Act 2025 officially comes into force. The new law will replace the decades-old Income-tax Act, 1961, which has governed the country’s tax framework for more than sixty years.

The government says the new legislation aims to simplify tax rules, make compliance easier, and modernize the direct tax system. The changes largely incorporate proposals announced in the Union Budget 2026

, while also simplifying the language and structure of tax regulations.

Tax experts believe the reforms are designed to make the system more transparent and easier to understand for investors, businesses, and individual taxpayers.

Introduction of the ‘Tax Year’ Concept

One of the biggest changes in the new law is the introduction of the “Tax Year” concept.

Currently, the tax system uses two terms — Previous Year

(the year in which income is earned) and Assessment Year (the year in which tax is assessed). Under the new law, these two concepts will be replaced by a single term: Tax Year.

According to chartered accountant Suresh Surana, this change will simplify tax compliance by clearly defining the period in which income is earned and taxed.

No Change in Income Tax Slabs

Despite the introduction of a new law, the income tax slab rates for individuals will remain unchanged

Both the old tax regime and the new tax regime will continue with the same tax rates as before. This means taxpayers will not face any immediate increase in personal income tax liability under the new law.

The focus of the legislation is primarily on structural improvements rather than altering tax rates.

Changes in ITR Filing Deadlines

Another important update concerns the timeline for filing Income Tax Returns (ITR)

Under the revised rules, the deadline for certain taxpayers has been extended:

July 31: Individuals filing simple returns such as ITR-1 and ITR-2
August 31: Taxpayers involved in business or profession whose accounts do not require audit
October 31: Companies and taxpayers whose accounts require audit
November 30: Cases falling under special provisions

These revised timelines will apply from the tax year 2026–27 onwards

The government believes that extending deadlines for certain categories will provide taxpayers with additional time to complete compliance accurately.

Extended Time Limit for Revised Returns

The new tax law also expands the time allowed for filing a revised return.

Currently, taxpayers can revise their income tax return within nine months after the end of the tax year

. Under the new law, this window will increase to 12 months.

However, a fee will apply if the revised return is filed after nine months:

₹1,000 fee if total income is up to ₹5 lakh
₹5,000 fee if total income exceeds ₹5 lakh

This change aims to give taxpayers more flexibility to correct errors in their filings.

Increase in Securities Transaction Tax (STT)

The government has also proposed higher Securities Transaction Tax rates for certain derivatives transactions.

From April 1, 2026, the following STT rates will apply:

Options sale: increased from 0.10% to 0.15%
Options exercise: increased from 0.125% to 0.15%
Futures sale: increased from 0.02% to 0.05%

The move aims to regulate the growing volume of speculative trading in derivatives markets.

Changes in TCS Rates for Certain Transactions

The new tax law also revises Tax Collected at Source rates for several types of transactions.

Key updates include:

Alcohol sales: TCS increased from 1% to 2%
Tendu leaves: TCS reduced from 5% to 2%
Scrap, coal, lignite and iron ore: TCS increased from 1% to 2%

For overseas remittances under the Liberalised Remittance Scheme

, the rate will change as well:

Funds sent abroad for education or medical treatment exceeding ₹10 lakh will attract 2% TCS instead of 5%.
Transfers for other purposes will continue to attract 20% TCS.

Additionally, overseas tour packages will now have a single TCS rate of 2%, replacing the earlier two-tier structure.

Relief for Employees on Office Travel Expenses

The new law also offers a small relief to employees.

If an employer reimburses the cost of commuting between home and office, it will no longer be treated as a taxable benefit

. Previously, tax exemption applied only when the employer provided a vehicle for official commuting.

This change broadens the scope of tax relief for employee transportation benefits.

New Tax Treatment for Share Buybacks

The taxation method for share buyback transactions will also change.

Currently, income from buybacks is treated as dividend income

, and the cost of extinguished shares is considered a capital loss.

Under the new rules, the proceeds from buybacks will instead be taxed as capital gains income. Experts believe this could increase the effective tax burden for promoters.

According to analysts, promoters may face an effective tax rate of around 30%, while promoter companies may pay roughly 22%

, excluding surcharge and cess.

Changes in Rules for Dividend and Mutual Fund Income

Another notable proposal is the removal of interest expense deduction against dividend and mutual fund income.

Previously, taxpayers could claim deductions of up to 20% of interest expenses against such income. Under the new law, this deduction will no longer be allowed.

However, deductions related to other types of taxable interest income will continue under the existing rules.

A Major Reform in India’s Direct Tax System

Overall, the Income Tax Act 2025 is considered one of the most significant reforms in India’s direct taxation framework in decades. The new legislation aims to simplify processes, modernize the tax structure, and make compliance easier for taxpayers.

All the new provisions will come into effect from April 1, 2026, marking a major shift in the way India’s income tax system operates.