Form 10-IEA applicability
- Needed when an eligible taxpayer with business or professional income wants to opt out of the default new regime.
- Non-business cases generally choose the regime directly in the ITR filed by the due date.
- Re-entering the new regime for business/profession taxpayers also uses Form 10-IEA and is subject to one-time switching limits.
How to handle Form 10-IEA safely
- Compute both regimes using complete income and deduction data.
- File Form 10-IEA before filing ITR if old regime is chosen by a business/profession taxpayer.
- Keep the acknowledgement number and quote it correctly in ITR-3/ITR-4.
- Recalculate advance tax if the regime choice changes the liability.
Mistakes to avoid
- Filing ITR first and trying to fix the regime later.
- A salaried-only taxpayer filing the form unnecessarily.
- Ignoring the switching restriction for taxpayers with business or professional income.
- Using a tax estimate that ignores special-rate income or disallowed deductions in the new regime.
Applicable year and source discipline
Last fact-checked: 25 May 2026.
AY 2026-27 means FY 2025-26 income and is still filed under the Income-tax Act, 1961 using forms/instructions for that assessment year. Tax Year 2026-27 means FY 2026-27 income under the Income Tax Act, 2025. The two should not be mixed.
Where this page discusses a new form, rate, portal label or transition item, treat it as usable only when supported by the live e-filing portal, a CBDT notification, the Income Tax Department guidance page, the supplied Act PDF, or ICAI material.
What a serious tax expert should verify
- Financial year, assessment year or tax year being handled.
- Residential status, age category, taxpayer type and whether business/professional income exists.
- Correct ITR form, utility validation rules and schedule requirements.
- AIS, TIS, Form 26AS, Form 16/Form 16A, TDS/TCS credits and advance-tax challans.
- Special-rate income such as section 111A, 112, 112A or VDA before applying section 87A rebate.
- Whether a claim is notified law, portal functionality, a draft/proposal, or a competitor summary.
FAQs
Which year should I use for Form 10-IEA - Opting Out of New Tax Regime?
Use AY 2026-27 for FY 2025-26 income under the Income-tax Act, 1961. Use Tax Year 2026-27 for FY 2026-27 income under the Income Tax Act, 2025.
What documents should I share with a tax expert?
Share the portal screenshot, exact year, income breakup, certificates, AIS/Form 26AS, notices, challans and any computation already prepared.
Can WorkIndex help me find a specialist?
Yes. Post a requirement with the legal year, records and deadline so experts can quote on the real issue instead of a generic page title.