A comprehensive checklist for AY 2026–27 income tax return filing, covering default tax regime choices, Form 16/AIS reconciliations, unified capital gains rates, and post-filing e-verification windows.

Income Tax Return Filing Checklist for AY 2026–27

What's different this year, what to keep ready, and how to file and verify your return without errors.

Returns for FY 2025–26 (Assessment Year 2026–27) are still filed under the Income-tax Act, 1961, even though the new Income-tax Act, 2025 has taken effect, that newer law applies from Tax Year 2026–27 onward, not to this filing cycle. What has changed for this cycle is mostly in the forms and disclosures.

Quick Facts for This Filing Cycle

Step 1 — Decide Your Tax Regime and ITR Form

• Confirm your regime: The new regime applies automatically unless you opt out. Salaried taxpayers can switch each year directly in the ITR; those with business or professional income must file Form 10-IEA to opt out, on or before the filing due date.
• Compare both regimes: Run the numbers under old and new regimes before filing — the right choice depends on how many deductions (HRA, 80C, home loan interest) you actually claim.
• Pick the correct form: ITR-1 and ITR-4 now cover taxpayers with up to two house properties, so check if you've moved from ITR-2/3 to a simpler form this year.

Step 2 — Keep These Documents Ready

• PAN and full 12-digit Aadhaar number — linked and active.
• Form 16 from every employer you worked with in FY 2025–26, if you switched jobs.
• Form 26AS and AIS/TIS — to reconcile TDS and reported income before filing.
• Bank interest and investment certificates for FD/RD/savings interest and 80C-eligible investments.
• Capital gains statements from brokers or mutual fund platforms, reflecting the unified FY 2025–26 rates.
• Donation receipts with the recipient's bank IFSC code and transaction reference number, now mandatory for Section 80G claims.
• Records of any non-taxable receipts (gifts, loans, reimbursements) that might otherwise show up as a mismatch against your AIS.

New This Year — Don't Miss These

Step 3 — File Your Return

• Log in and select AY 2026–27 on the e-filing portal, then choose the correct ITR form.
• Verify pre-filled data line by line against Form 16, Form 26AS, and AIS — don't accept it blindly, since third-party reporting errors can trigger notices.
• Declare your regime choice explicitly on the form, since this is now a mandatory field rather than inferred.
• Report all income sources including exempt income, foreign assets (if applicable), and capital gains at the correct unified rates.
• Pay any self-assessment tax due before submission and confirm the challan reflects correctly in the return.

Step 4 — After Filing

• e-Verify within 30 days using Aadhaar OTP, net banking, or EVC — an unverified return is treated as not filed.
• Track your refund or tax-payable status on the portal once processed.
• Know your correction window: if you missed the 31 July / 31 August due date, you can still file a belated return by 31 December 2026. A revised return (fixing an already-filed one) can now be filed up to 31 March 2027, since Budget 2026 decoupled the revised-return deadline from the belated-return deadline.
• Updated returns (ITR-U): these can now be filed even after a reassessment notice, and paying tax, interest, and the additional levy upfront provides immunity from penalty.

Key Deadlines at a Glance