Filing your Income Tax Return (ITR) has become significantly easier with the Income Tax Department's e-filing portal. But choosing the wrong ITR form, missing a document, or mis-entering a figure from Form 26AS can trigger a tax notice months later. This guide walks through everything you need for a clean, correct ITR filing for FY 2025-26 (Assessment Year 2026-27).
Step 1 — Which ITR Form Should You Use?
Using the wrong form invalidates your return. Here's the decision tree:
ITR Form Selection Guide
| Form | Who Should Use It | Who Cannot Use It |
|---|---|---|
| ITR-1 (SAHAJ) | Resident individuals with: salary/pension income; one house property; other sources (interest, family pension up to ₹5,000); total income ≤ ₹50 lakh | Directors in companies; those with foreign assets/income; lottery/horse racing income; capital gains; agricultural income > ₹5,000; business income |
| ITR-2 | Individuals and HUFs with: capital gains; more than one house property; foreign assets/income; directorship; income > ₹50 lakh; no business/professional income | Those with business or professional income |
| ITR-3 | Individuals with income from business or profession (not presumptive) | Companies, partnerships |
| ITR-4 (SUGAM) | Resident individuals/HUFs/firms opting for presumptive taxation under Sections 44AD, 44ADA, 44AE | Those with foreign assets; income > ₹50 lakh; capital gains; multiple businesses not under presumptive scheme |
Rule of thumb: Salaried with no stocks/property → ITR-1. Salaried with mutual fund/stock gains → ITR-2. Freelancer or consultant → ITR-3 or ITR-4.
Step 2 — Documents to Collect Before Starting
Checklist: What You Need Before Filing
- ✅ PAN card — required for login and self-identification
- ✅ Aadhaar — must be linked to PAN (mandatory since 2022)
- ✅ Form 16 — issued by employer, shows salary income and TDS deducted
- ✅ Form 16A — TDS certificates from banks for fixed deposit interest
- ✅ Bank statements — savings account interest (taxable), current account transactions
- ✅ Form 26AS + AIS — download from incometax.gov.in (cross-check all TDS entries)
- ✅ Investment proofs — for 80C (PPF passbook, ELSS statement, LIC receipts), 80D (health insurance premium receipts)
- ✅ Home loan statement — from bank showing principal + interest breakup for the year
- ✅ Rent receipts — if claiming HRA exemption
- ✅ Capital gains statements — from broker (if any equity/MF transactions)
- ✅ Foreign income details — if applicable (bank statements, FEMA documentation)
Step 3 — Check Form 26AS and AIS First
Before entering a single figure into your ITR, download and verify Form 26AS and the Annual Information Statement (AIS). These are the IT Department's records of what has already been reported against your PAN.
How to access: Login to incometax.gov.in → e-File → Income Tax Returns → View Form 26AS. AIS is under the same portal under "AIS / TIS."
Critical check: Your ITR figures for salary, interest income, TDS credits, and capital gains must match what's in 26AS/AIS. A mismatch triggers automated scrutiny notices (Section 143(1)(a)).
Step 4 — Filing Your ITR Online (Step-by-Step)
Filing Process on incometax.gov.in
- 1. Login — Go to incometax.gov.in → Login with PAN and password. Set up a password if you haven't registered (OTP via Aadhaar-linked mobile).
- 2. Select filing type — e-File → Income Tax Returns → File Income Tax Return → AY 2026-27 → Online mode.
- 3. Choose the right form — The portal may auto-suggest a form. Verify it matches your income type. You can override the suggestion.
- 4. Pre-filled data — The portal auto-populates data from Form 26AS, AIS, and employer TDS returns. Verify every pre-filled entry carefully. Do not just click Accept — errors in pre-filled data become your responsibility once you accept.
- 5. Fill in details — Enter income under each head (salary, house property, capital gains, other sources). Claim deductions (80C, 80D, 80CCD, HRA etc.). Verify TDS credit. Compute tax payable or refund due.
- 6. Pay tax if due — If there's tax payable after TDS, pay Self-Assessment Tax via Challan 280 (online banking or UPI). Enter the BSR code and challan serial number in the ITR.
- 7. Preview and submit — Preview the ITR, check the tax computation, and submit.
- 8. E-verify — Your ITR is not considered filed until e-verified. Options: Aadhaar OTP (instant), net banking, DEMAT account, Bank ATM, or send physical ITR-V to CPC Bengaluru within 30 days.
ITR Deadlines for AY 2026-27
Key Dates
| Category | Deadline |
|---|---|
| Non-audit cases (most individuals) | 31 July 2026 |
| Cases requiring tax audit (Section 44AB) | 31 October 2026 |
| Transfer pricing audit cases | 30 November 2026 |
| Belated return (with late fee) | 31 December 2026 |
| Revised return | 31 December 2026 (or before assessment completion) |
Late filing fee: ₹1,000 if total income ≤ ₹5 lakh; ₹5,000 if total income > ₹5 lakh.
Common Mistakes That Trigger Tax Notices
- Mismatch with 26AS: Declaring less interest income than what banks have reported in 26AS is the #1 cause of scrutiny notices.
- Ignoring AIS entries: AIS includes mutual fund dividends, sale of property, high-value transactions. Not declaring them leads to Section 142(1) notices.
- Wrong ITR form: Salaried employees with ELSS redemptions (capital gains) using ITR-1 instead of ITR-2. The return gets defective and is treated as not filed.
- Not reporting exempt income: Even tax-exempt income (PPF maturity, LIC maturity, LTCG below ₹1.25L) should often be disclosed in the ITR under the appropriate schedule.
- Missing Schedule FSI / Schedule FA: If you have foreign bank accounts, overseas investments, or foreign income — even if received legally — not reporting in Schedule FA/FSI is a Black Money Act violation with severe penalties.
- Not e-verifying: An unverified ITR is not a valid return. Many people submit but forget to e-verify — the return is then treated as never filed.
- Home loan principal in Section 24: Principal repayment is under 80C, not Section 24. Section 24(b) is only for home loan interest.
Old Regime vs New Regime — Which to Choose While Filing
At the time of ITR filing, you formally select your tax regime. Salaried employees get one opportunity to switch per year at filing time (if they've already declared to their employer, they can switch when filing ITR). Self-employed individuals can switch between regimes only once in their lifetime (switching back is not allowed).
Use our Income Tax Calculator to compare your tax liability under both regimes before deciding.
Frequently Asked Questions
Which ITR form for salaried income?
ITR-1 (SAHAJ) for salary + interest + one house property, total income ≤ ₹50 lakh, no capital gains. ITR-2 if you have capital gains, foreign assets, more than one property, or income > ₹50 lakh.
What is the ITR deadline for FY 2025-26?
31 July 2026 for non-audit cases. Belated returns accepted until 31 December 2026 with a ₹1,000–₹5,000 late fee.
Is filing mandatory if income is below the exemption limit?
Not mandatory for income below ₹2.5L (Old Regime) / ₹3L (New Regime), but strongly recommended for income proof, refund claims, and loss carry-forward.
What is Form 26AS?
A consolidated tax credit statement showing all TDS deducted against your PAN, advance tax paid, and self-assessment tax paid. Must match your ITR exactly.
Can I revise my ITR after submitting?
Yes, a revised return can be filed until 31 December 2026 for AY 2026-27. No limit on the number of revisions.
What is AIS vs Form 26AS?
AIS (Annual Information Statement) is more comprehensive — it includes all financial transactions the IT department has received about you (bank interest, dividends, share transactions, property sales, mutual fund redemptions). 26AS shows TDS and tax paid. Check both before filing.
What happens if I miss the ITR deadline?
Belated return allowed until 31 December 2026 with ₹1,000–₹5,000 late fee. You lose carry-forward of most losses (except house property loss). After December, you need a condonation request.
Sources: Income Tax Act, 1961; CBDT instructions for AY 2026-27; Income Tax portal (incometax.gov.in). Educational purposes only — consult a Chartered Accountant for personalised filing assistance.
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