Belated Return where Form 10IEA filed this year to switch to new regime from earlier Old Regime

By filing a belated return for FY 2026-27, you will be assessed under the New Tax Regime, as it is the default tax regime and the strict due-date filing requirement applies primarily when attempting to claim the Old Tax Regime.

if you have filed form 10IEA within due date your ITR will get processed under old regime.

Sir, I have filed 10IEA to re-enter in New Regime . Previously I was filing returns in Old Regime .Kindly advise .

In that case you have opted out of old regime permanenty. ITR will be prroceesed under new regime.

The conflict in this thread comes from mixing up two different rules.

When you file Form 10IEA before the due date to switch to new regime, that election is valid. The belated ITR-03 will be processed under new regime.

The rule that says belated return defaults to new regime applies to people who did NOT file any Form 10IEA at all. Your situation is different: you DID file 10IEA within the deadline, so your regime election holds.

Two important caveats for your belated filing:

Business losses cannot be carried forward: If you have losses under Schedule BP (business or profession), a belated return means you lose the right to carry them forward under Section 139(3). Plan accordingly.

One-time switch is now used: By switching from old to new regime via Form 10IEA, you have exercised your one-time option. You CANNOT go back to old regime in future years as long as you have business income.

For the late fee: Section 234F applies. Fee is Rs 1,000 if total income is Rs 5 lakh or below, and Rs 5,000 otherwise. File before December 31, 2026 to avoid the return becoming invalid.

This [belated and revised ITR guide for AY 2026-27](https://taxgarden.in/blog/belated-revised-updated-itr-return-guide-india-ay-2026-27) covers the loss carryforward restrictions, Form 10IEA interaction, and Section 234F penalty calculation.