Form 10-IEA After 1 April 2026: Re-entry Rules That Still Matter

Introduction: When deductions disappear, an old choice matters

Consider a salaried individual who also earns consulting income. When he chose the old tax regime, housing-loan interest and investments made the deductions worthwhile. A few years later, his loan interest has ended and his investments have fallen. His tax calculation now favours the new regime. But he has already filed Form 10-IEA once. Can he move back, and how?

The answer depends on the year, the validity of the earlier election and whether the consulting receipts are assessed as business or professional income. The transition between income-tax laws adds another question: does an option under the old law survive the repeal?

FY 2025-26 / AY 2026-27 remains under the Income-tax Act, 1961. Tax Year 2026- 27 (income earned from 1 April 2026 to 31 March 2027) is governed by the Income-tax Act, 2025. The filing procedure changes; the restrictions do not simply disappear. The taxpayer's income classification now also determines whether the ordinary filing deadline is 31 July or 31 August. For a time-sensitive regime election, that distinction is not a clerical detail.

Why professional income restricts switching

The new regime is the default. A person without business or professional income can generally choose the old regime through the relevant timely return each year. A person with income assessed under Profits and Gains of Business or Profession (PGBP) follows a more restrictive route.

Under section 115BAC(6) of the 1961 Act, opt-out generally continued into later assessment years. It could be withdrawn once in a subsequent year. After withdrawal, the individual could not opt for the old regime again while PGBP income continued. Section 202(4)(a) of the 2025 Act preserves that restriction; if business or professional income ceases, the non-business option in section 202(4)(b) may become available.

A salary plus a genuine consulting business fall within the PGBP rule. Mere possession of a side income is not decisive: its correct statutory income head is.

What happened to Form 10-IEA?

For AY 2024- 25 onwards, under the old Act, taxpayers with PGBP income used Form 10-IEA to opt out of the default regime or withdraw an earlier opt-out. A continuing valid election did not require filing the form again each year. The form was to be filed on or before the section 139(1) due date. The Income Tax Department's Form 10-IEA FAQs explain that late forms may be marked Invalid Form, and a submitted form cannot be revised in the same year.

For Tax Year 2026- 27, Rule 136 of the Income-tax Rules, 2026, notified through CBDT Notification No. 22/2026, requires the section 202(4) election or withdrawal in the income-tax return furnished under section 263(1) . There is no separately prescribed Form 10-IEA for that year's election.

This removes an extra form, not the need to trace earlier choices. Under section 536(2)(f), an option validly exercised under the repealed Act and still effective before 1 April 2026 is treated as exercised under the corresponding provision of the 2025 Act. An invalid filing is not made valid merely by the transition. The CBDT's transition FAQs, question 8.24, explain this saving rule.

The filing deadline: check the enacted Finance Act, not the Bill

The Finance Act, 2026 (Act 4 of 2026) made two matching amendments. Section 5, effective 1 March 2026, substituted Explanation 2 to section 139(1) of the 1961 Act. As a result, the ordinary due date for qualifying non-audit PGBP taxpayers for AY 2026- 27 became 31 August 2026, by statute—not by an administrative extension.

Section 66 amended section 263(1)(c) of the 2025 Act. For Tax Year 2026- 27, the corresponding ordinary due date is 31 August 2027 for non-audit PGBP cases. Ordinary salary-only returns remain due 31 July ; audit and specified international-transaction cases have other dates. These provisions appear in the enacted Finance Act, 2026 .

The classification can therefore determine both the return deadline and the regime-election deadline. Filing by 31 August on an unsupported assumption that consulting receipts are PGBP may put an election at risk if the correct deadline was 31 July. Conversely, genuine non-audit PGBP income brings the statutory August deadline. The facts must support the classification; a portal selection does not create it.

Do not ignore the rebate when comparing regimes

Section 156 of the 2025 Act succeeds old section 87A. Under section 156(2), an eligible resident individual taxed under section 202(1) may claim a rebate up to Rs 60,000 where total income does not exceed Rs 12 lakh, with marginal relief in qualifying cases just above Rs 12 lakh. The rebate cannot offset income-tax charged at special rates beyond the limits in section 156(3).

This affects the regime comparison significantly at middle incomes. It does not make Rs 12 lakh a universal tax-free threshold for every kind of income. Where taxable income is well above Rs 12 lakh, as in the example below, neither the Rs 60,000 rebate nor marginal relief applies.

A Rs 1,76,800 reason to re-enter the new regime

Consider a resident individual below 60, with salary of Rs 14,00,000 and net consulting income of Rs 4,00,000 under PGBP. His old-regime deductions once totalled about Rs 3,75,000, including eligible housing-loan interest and investment-related deductions. They have declined to Rs 75,000 . Assume no special-rate income, surcharge, professional tax or other adjustments; the consulting profit is already net of business expenses.

These rates are supported by section 202 and the Finance Act, 2026 rate schedule. Salary standard deductions are prescribed in section 19(1), Table serial number 2.

The difference is Rs 1,76,800 in favour of the new regime. With the same Rs 18 lakh receipts, the mathematical break-even point is approximately Rs 6,41,667 of old-regime deductions beyond its Rs 50,000 standard deduction. That is an arithmetic crossover, not a claim that the taxpayer can actually deduct Rs 6.42 lakh: housing-interest and Chapter VIII deductions are subject to separate conditions and caps.

For this taxpayer, reduced deductions make re-entry attractive. But he has only one statutory withdrawal while PGBP income continues.

Re-entry is a one-time choice, not a portal trick

Assume he validly opted for the old regime through Form 10-IEA for AY 2024- 25 and continued that choice through AY 2026- 27. The saved election survives the new law. To re-enter the new regime for Tax Year 2026- 27, he should record withdrawal of the earlier opt-out in the return under section 202(4) and Rule 136, by his applicable due date. He should not attempt a fresh old-law Form 10-IEA for that tax year.

After a valid withdrawal, section 202(4)(a)(iv) generally bars another opt-out while he has PGBP income. If that income ceases, the statute expressly provides for the non-business route. Calling the decision irreversible forever, regardless of income circumstances, would overstate the law.

A disabled portal option is not proof of statutory ineligibility. Verify the prior election, whether it was valid, whether withdrawal has already occurred, and the correct filing deadline. Preserve acknowledgements and error evidence before raising a grievance. Under the old Act, a late or invalid form is different from a valid option that has already been withdrawn.

Conclusion: compute first, then trace the election

The disappearance of Form 10-IEA from the 2026 rules is a procedural simplification, not permission to switch tax regimes annually. For business-income taxpayers, the earlier election and any withdrawal remain important after the statutory transition. A taxpayer may have a substantial reason to re-enter the new regime—here, a Rs 1,76,800 saving but still needs to follow the one-time withdrawal rule.

The return deadline deserves equal attention. Finance Act, 2026 sections 5 and 66 introduced a statutory 31 August deadline for qualifying non-audit PGBP cases under both Acts. Salary-only cases generally remain on 31 July. For a regime election tied to the section 263(1) filing deadline, classifying income correctly becomes a compliance decision as well as a computation decision.

Before submitting the return, verify the previous Form 10-IEA record, income head, allowable deductions, applicable rebate, whether a withdrawal was used earlier, and the statutory due date. Then compare the actual tax under both regimes. A convenient portal option should be the final step, not the basis of the decision.

References - Official government sources only

1. Income-tax Act, 2025 as amended by Finance Act, 2026: sections 19, 156, 202, 263 and 536.
2. Finance Act, 2026 (Act 4 of 2026): sections 5 and 66, and the rate schedule.
3. Income-tax Act, 1961, section 115BAC, especially subsection (6).
4. CBDT Notification 22/2026: Income-tax Rules, 2026, Rule 136.
5. Income Tax Department, Form 10-IEA FAQs.
6. CBDT, FAQs on interplay and transition, question 8.24.
7. Income Tax Department, Budget 2026 FAQs, Part VIII, on return deadlines.