Old vs New Tax Regime: Does Your ITR Form Change?

March 13, 2026 6 min read Guide

Picking old or new regime is one decision. Picking ITR-1, 2, 3, or 4 is another. A lot of people mix them up. Here's the short answer: your ITR form does not change with the regime. Same form. You just choose the regime inside it.

This guide is for financial year 2025-26 (AY 2026-27) - the return you file in 2026 for income earned from April 2025 to March 2026.

The One-Line Answer

"I'm on the old regime (or new regime). Do I file a different ITR form?"

No. You file the same ITR form - ITR-1, ITR-2, ITR-3, or ITR-4 - whether you choose the old or the new tax regime. The form is decided by your income type (salary, business, capital gains, etc.). The regime is a choice you make inside the return when you file. So: first figure your form (use our 5-question selector), then pick your regime. Two separate steps, one form.

Two Decisions, One Form

When you file your return, you are really making two different choices. It helps to keep them in separate boxes:

Decision	What it depends on	Result
Which ITR form?	Income type (salary only, capital gains, business, etc.), total income, residency (resident/NRI/RNOR)	ITR-1, ITR-2, ITR-3, ITR-4, ITR-5, ITR-6, or ITR-7
Old or new regime?	Your choice (default is new regime from AY 2024-25). Affects slabs, deductions, rebate.	Old regime (more deductions, higher slabs) or new regime (lower slabs, fewer deductions)

The Income Tax Department's own FAQs on the new vs old regime state that the same return forms are used for both regimes. You select the regime in the return (or, for business/profession income, via Form 10-IEA if you want the old regime). So: form first, regime second. Never "different form for different regime."

Same Form, Different Regime: Tap Your Situation

Tap a card to see that the form stays the same - only the regime choice changes.

Salaried, old regime

Rs 10 L salary, 80C, HRA. You want old regime.

Form: ITR-1. Regime: choose old in the return. Same form as if you were on new regime.

Salaried, new regime

Rs 10 L salary, minimal deductions. New regime (default).

Form: ITR-1. Regime: new (default). Same ITR-1 form.

Capital gains, either regime

Salary plus sold mutual funds. Old or new regime - your call.

Form: ITR-2. Regime: choose in the return. Form does not change.

Freelancer, presumptive, new regime

Rs 40 L receipts, 44ADA. You stay on new regime.

Form: ITR-4. Regime: new (default). Same ITR-4.

Freelancer, presumptive, old regime

You want old regime. You have business income.

Form: ITR-4. File Form 10-IEA by due date to opt old regime. Form still ITR-4.

When Form 10-IEA Comes In (Business / Profession Only)

From AY 2024-25, the new regime is the default. If you have only salary, house property, capital gains, or other sources (no business or profession), you can choose old or new regime directly in the ITR form when you file. No separate form.

If you have business or profession income and you want the old regime, you must file Form 10-IEA on or before the due date of your return under Section 139(1) (e.g. July 31, 2026 for most individuals for AY 2026-27). Form 10-IEA is only for opting out of the default new regime. It does not change which ITR form you use - you still file ITR-3 or ITR-4 as per your income type. If you miss the Form 10-IEA deadline, you will be taxed under the new regime for that year. Form 10-IEA can be filed only twice in your lifetime: once to opt out of the new regime and once to re-enter it.

So: Form 10-IEA is not "a form for old regime filing." It is "I have business income and I opt out of the default new regime." Your ITR form (e.g. ITR-4) remains the same.

What Actually Changes Between Old and New Regime?

Inside the same ITR form, the regime choice changes:

Tax slabs: New regime has lower rates and a higher effective tax-free cap (e.g. up to Rs 12 L taxable can get full rebate under Section 87A in new regime for FY 2025-26). Old regime has higher rates but more deductions.
Standard deduction: New regime Rs 75,000 (FY 2025-26); old regime Rs 50,000.
Deductions: Old regime allows 80C, 80D, HRA, home loan interest, and many others. New regime allows only a few specified deductions.

So you pick the regime that saves you more tax. Your ITR form is still decided only by income type and eligibility. Need a side-by-side number? Use our income tax calculator to compare both regimes on your salary and deductions.

Where This Comes From

The Income Tax Department portal (incometax.gov.in) publishes FAQs on "New tax vs Old tax regime." Those FAQs clarify that the same return forms (ITR-1 through ITR-7) are used for both regimes and that the option to choose the regime is exercised in the return or, for specified cases, through Form 10-IEA. We have not linked to a specific URL here because the portal restructures help pages; search for "New vs Old tax regime FAQs" on the portal for the latest text.

Frequently Asked Questions

Do I file a different ITR form for old regime and new regime?

No. You file the same ITR form (ITR-1, ITR-2, ITR-3, or ITR-4 as applicable) for both old and new tax regimes. The form is decided by your income type and taxpayer status. The regime is a choice you make inside the return when filing.

Does the new tax regime require a different ITR form?

No. The new tax regime (default from AY 2024-25) does not require a different ITR form. You use the same form and select the regime in the return. Only the tax slabs and deductions change, not the form.

What decides which ITR form I file?

Your income type and situation decide the form: salary and simple income up to Rs 50 L is ITR-1; capital gains or income above Rs 50 L is ITR-2; business or profession is ITR-3 or ITR-4 (presumptive). Residency (NRI/RNOR) also affects eligibility. The tax regime (old or new) does not change the form.

When do I need Form 10-IEA for old regime?

Form 10-IEA is required only if you have income from business or profession and you want to opt for the old tax regime. You must file it on or before the due date of your ITR under Section 139(1). It can be filed only twice in your lifetime (once to opt out of the new regime, once to re-enter). Salaried individuals without business income can choose the old regime directly in the ITR form and do not need Form 10-IEA.

Can I choose old or new regime every year?

If you have only salary, house property, capital gains, or other non-business income, you can choose between old and new regime each year when filing your ITR. If you have business or profession income and opt for the old regime via Form 10-IEA, the switching rules are stricter and you may be locked in for subsequent years - check the latest CBDT notification for the exact rule.

Disclaimer: This article is for informational purposes only. Tax rules can change. Consult a qualified CA or tax professional for advice specific to your situation.