How to File ITR — Income Tax Return Guide 2026

📖Overview

Filing an Income Tax Return (ITR) is a legal obligation for every Indian whose gross income exceeds the basic exemption limit (₹3 lakh under Old Regime, ₹3 lakh under New Regime for FY 2025-26). Even if your income is below the limit, filing ITR is highly recommended — it serves as income proof for home loans, car loans, credit card approvals, visa applications, and rental agreements.

There are 7 different ITR forms for different income types: ITR-1 (Sahaj) for salaried individuals with income up to ₹50 lakh and simple sources, ITR-2 for capital gains/multiple properties, ITR-3 for business income, ITR-4 (Sugam) for presumptive income (self-employed with turnover ≤₹1Cr), ITR-5/6/7 for firms/partnerships/companies. Most salaried employees use ITR-1 or ITR-2.

The income tax e-filing portal (incometax.gov.in) allows free online filing. Most of your data is pre-filled from Form 16 (from employer), Form 26AS (showing all TDS), and AIS (Annual Information Statement showing all income reported by others — banks, employers, investment platforms).

For simple salaried cases, filing takes just 15-20 minutes. No need for paying any charges or using paid software.

The deadline for individuals is July 31 of the assessment year (for income earned in the previous financial year). Filing ITR before July 31 is advisable — not only to avoid penalty but to claim refunds faster.

Filing after July 31 attracts a penalty of ₹5,000 (reduced to ₹1,000 if total income below ₹5 lakh). You also lose the ability to carry forward certain losses if filed late.

📋Key Details

📝Step-by-Step: Filing ITR-1 Online (for Most Salaried Employees)

⚖️Old Regime vs New Regime — Which Saves More Tax?

⚠️Common Mistakes That Cost You Money

Mistake 1: Not filing ITR because 'no tax is due'

Mistake 2: Not reporting bank interest and FD interest

Banks report all FD/savings interest >₹40 to IT dept.

Mistake 3: Missing the e-Verification step

An unverified ITR is treated as if you never filed. You lose all deductions, refunds don't process, and the government can treat you as a non-filer.

Take 30 seconds to verify immediately after submission.

Mistake 4: Not claiming all eligible deductions

Mistake 5: Filing the wrong ITR form

If you have business income, you need ITR-3 or 4. Filing wrong form = notice from IT dept asking for correction = stress and delay.

Take 30 seconds to verify your form eligibility before filing.

Mistake 6: Wrong tax regime choice

New Regime might be worse for you. Always compare both before choosing.

🚀How to Get Started — Checklist

📋Who must file ITR and why you should even if not mandatory

ITR filing is mandatory if your gross total income exceeds Rs 3 lakh (old regime) or Rs 3 lakh (new regime) before deductions in a financial year. Even if TDS has been deducted on your entire income and you owe zero additional tax, you must still file if income crosses the threshold.

Not filing is a violation of the Income Tax Act — penalty of Rs 1,000-5,000 under Section 234F.

Even if your income is BELOW the threshold, filing ITR is strongly recommended. Benefits of voluntary filing: you can claim TDS refund (banks deduct 10% TDS on FD interest — if your total income is below taxable limit, you get this back through ITR filing), ITR acknowledgment is required for visa applications (US, UK, Schengen embassies require 3 years of ITR), and loan applications (banks check ITR for home loan, car loan, and business loan eligibility).

Self-employed, freelancers, and business owners: You MUST file ITR regardless of income level if you have business or professional income. Even if your freelance income is Rs 1 lakh/year (below taxable limit), the law requires filing because business income must be declared.

Use ITR-3 or ITR-4 (Sugam) for business/professional income.

📊Which ITR form should you use?

ITR-1 (Sahaj): For salaried individuals with total income up to Rs 50 lakh from salary, one house property, and other sources (interest, pension). This covers 80% of salaried Indians.

If you're a regular employee with salary + FD interest + one house, use ITR-1. Cannot use if: you have capital gains, multiple house properties, business income, foreign assets, or agricultural income above Rs 5,000.

ITR-2: For individuals and HUFs with income from salary, house property, capital gains (stock trading, mutual fund redemption, property sale), and other sources — but NO business income. If you sold shares, mutual funds, or property during the year, use ITR-2 (not ITR-1).

Also for people with foreign assets, directorship in companies, or agricultural income above Rs 5,000.

ITR-3: For individuals and HUFs with business or professional income. If you're a freelancer, consultant, doctor with private practice, CA, lawyer, or run any business alongside employment, use ITR-3. Covers ALL income types including salary, capital gains, house property, and business profits.

ITR-4 (Sugam): Simplified form for small businesses and professionals opting for presumptive taxation under Section 44AD/44ADA. If your business turnover is below Rs 2 crore (cash) or Rs 3 crore (digital) and you declare profit at 6-8% of turnover without maintaining books of accounts, use ITR-4.

Freelancers with gross receipts below Rs 75 lakh can use ITR-4 by declaring 50% as profit.

📝Step-by-step ITR filing on incometax.gov.in

Step 1 — Login: Visit incometax.gov.in → Login with PAN as user ID + password. If first time, register → your PAN is your login ID, set a password, link with Aadhaar and mobile. After login, go to 'e-File' → 'Income Tax Returns' → 'File Income Tax Return.'

Step 2 — Select form and regime: Choose Assessment Year (AY 2026-27 for income earned in FY 2025-26). Select ITR form (ITR-1 for most salaried).

Choose tax regime — Old (with deductions like 80C, 80D, HRA) or New (lower rates, no deductions). The portal shows both calculations — pick whichever gives lower tax.

Step 3 — Pre-filled data: The portal auto-fills your data from Form 26AS and AIS — salary from Form 16, TDS on FD interest, mutual fund capital gains, property transactions, and other reported income. VERIFY every pre-filled entry.

If something is wrong (wrong TDS amount, income you don't recognize), cross-check with your Form 16, bank statements, and broker statements before proceeding.

Step 4 — Claim deductions (Old Regime only): Enter investments under Section 80C (PPF, ELSS, LIC premium, home loan principal — up to Rs 1.5 lakh), 80D (health insurance premium — up to Rs 25,000 self + Rs 25,000 parents), 80CCD(1B) (NPS — Rs 50,000 additional), HRA exemption, and other applicable deductions. Upload proof only if asked later — no need during filing.

Step 5 — Verify and submit: The portal computes your tax liability, shows tax already paid (TDS + advance tax), and calculates refund or additional tax due. If you owe additional tax, pay through 'e-Pay Tax' before submitting.

If refund is due, verify your bank account is pre-validated. Click 'Submit' and e-Verify immediately through Aadhaar OTP (takes 30 seconds).

⚠️Common ITR filing mistakes that trigger notices

Mistake 1: Not reporting all income sources. The IT department has data from banks (FD interest), mutual funds (capital gains), employers (salary), and property registrar (property transactions).

If you skip reporting FD interest of Rs 30,000 that your bank already reported to the IT department, the system auto-flags a mismatch and sends a demand notice. Report EVERYTHING shown in your AIS — even small amounts.

Mistake 2: Not e-verifying within 30 days. Filing ITR without e-verification is like writing an exam but not submitting the answer sheet.

The IT department treats unverified ITRs as invalid — no processing, no refund. E-verify through Aadhaar OTP immediately after submission.

Takes 30 seconds. Set a phone reminder if you don't verify the same day.

Mistake 3: Choosing wrong ITR form. Filing ITR-1 when you have capital gains (ITR-2 required) triggers a defective return notice.

The IT department asks you to re-file with the correct form within 15 days. If you don't respond, the original filing is deemed invalid.

Check the form eligibility criteria carefully before starting.

Mistake 4: Not pre-validating bank account. Refunds are sent to pre-validated bank accounts only.

If your bank account isn't pre-validated on the IT portal, your refund sits in limbo. Pre-validate at incometax.gov.in → 'Profile' → 'Pre-validate Bank Account' → enter account number and IFSC → validation takes 24-48 hours.

Do this before filing.

💰Old regime vs new regime — which saves more tax

New regime (default from FY 2023-24): Lower tax rates with fewer slabs — 0% up to Rs 3 lakh, 5% for Rs 3-7 lakh, 10% for Rs 7-10 lakh, 15% for Rs 10-12 lakh, 20% for Rs 12-15 lakh, 30% above Rs 15 lakh. Standard deduction Rs 75,000.

Rebate under 87A for income up to Rs 7 lakh (zero tax). NO 80C, 80D, HRA, or other deductions allowed.

Old regime: Higher tax rates — 0% up to Rs 2.5 lakh, 5% for Rs 2.5-5 lakh, 20% for Rs 5-10 lakh, 30% above Rs 10 lakh. But allows ALL deductions — 80C (Rs 1.5 lakh), 80D (Rs 25,000-50,000), 80CCD(1B) (Rs 50,000 NPS), HRA exemption, home loan interest (Rs 2 lakh under Section 24), LTA, and more.

When old regime is better: If you claim Rs 3.5+ lakh in total deductions (80C + 80D + HRA + home loan + NPS), old regime typically saves more tax. This is common for salaried individuals paying EMI on home loan + investing in PPF/ELSS + paying health insurance premiums.

Use our income tax calculator at knowledgekendra.com/calculator/income-tax-calculator to compare both regimes with your exact numbers.

When new regime is better: If your deductions are below Rs 2 lakh (you don't have home loan, limited 80C investments, no HRA), new regime gives lower tax through lower slab rates. Also better for senior citizens who don't have investment-heavy portfolios.

The Rs 7 lakh rebate in new regime means anyone earning up to Rs 7 lakh pays ZERO tax without any investments.

File before July 31 — late filing costs Rs 1,000-5,000

E-verify within 30 days or your ITR is INVALID

7.28 crore ITRs were filed in FY 2024-25 — a record. The IT portal pre-fills 80% of your data automatically. For a salaried individual with Form 16 and basic deductions, filing takes 15-30 minutes. The process that once required a CA charging Rs 2,000-5,000 is now completely self-service and free. Your refund arrives in 15-30 days. There's no reason to not file your own ITR.

📊ITR for specific income types — salary, freelance, capital gains

Salaried with only salary + FD interest (ITR-1): The simplest filing. Form 16 gives you all salary details. Add FD interest from bank statements (verify against Form 26AS). Claim 80C, 80D deductions if old regime. Total filing time: 15 minutes. This covers 70% of all ITR filings in India.

Freelancers and consultants (ITR-3 or ITR-4): If you receive income without TDS deduction (or with 10% TDS under 194J), you may need to pay advance tax quarterly. Report all professional receipts, claim business expenses (internet, phone, office rent, equipment depreciation), and declare net profit.

ITR-4 Sugam is simpler if you opt for 50% presumptive profit on gross receipts under Rs 75 lakh.

Stock market traders (ITR-2 or ITR-3): Short-term capital gains (equity held < 12 months) taxed at 20%. Long-term capital gains above Rs 1.25 lakh (equity held > 12 months) taxed at 12.5%.

Futures and options trading is business income — use ITR-3 with turnover calculation. Download your capital gains statement from Zerodha/Groww/Angel One and upload to the ITR portal.

Rental income (ITR-1 if one property, ITR-2 if multiple): Declare gross annual rent, claim 30% standard deduction (no proof needed), and deduct home loan interest (up to Rs 2 lakh for self-occupied, unlimited for let-out). Net rental income after deductions is added to your total income and taxed at your slab rate.

📈After filing — what to expect and track

Processing timeline: After e-verification, CPC Bengaluru processes your ITR within 15-30 days. You receive an intimation under Section 143(1) via email — this shows the IT department's computation of your income, tax, and refund/demand.

Compare the intimation with your filed return — if there's a mismatch, file a rectification request immediately.

Refund tracking: Check at incometax.gov.in → 'View Filed Returns' → select AY → 'Refund Status.' Refunds are credited to your pre-validated bank account via NEFT. If refund shows 'Issued' but not received after 10 days, check with your bank.

If 'Failed,' update bank details and request re-issue through the portal.

Revised return: Made a mistake in your filed ITR? File a revised return at incometax.gov.in → 'File Income Tax Return' → select 'Revised Return' → correct the errors → submit.

Revised return can be filed until December 31 of the assessment year (e.g., December 31, 2026 for AY 2026-27). No penalty for revision — it replaces your original filing completely.

Keep records for 7 years: The IT department can scrutinize returns up to 7 years after filing (10 years in case of foreign assets). Maintain digital copies of: Form 16, investment proofs, bank statements, capital gains statements, rent agreements, and the ITR acknowledgment.

A dedicated Google Drive folder for each financial year takes 5 minutes to organize but saves hours if scrutiny happens.

🔧Free tools and resources for ITR filing

Official portal: incometax.gov.in — free for ALL ITR forms. Pre-fills data from 26AS/AIS. The portal has improved dramatically since 2021 — it's genuinely user-friendly now. Tutorial videos are available on the portal's help section.

ClearTax (cleartax.in): Free plan for ITR-1 filing. Paid plans (Rs 499-1,999) for ITR-2, ITR-3 with CA assistance. The interface is more intuitive than the government portal for beginners. Auto-imports data from Form 16 PDF upload.

Tax2Win (tax2win.in): Free ITR-1 filing. Paid plans for complex returns. Offers CA-assisted filing for Rs 799-2,499. Good for people who want professional review of their return before submission.

Our income tax calculator: Use knowledgekendra.com/calculator/income-tax-calculator to compare old vs new regime before filing. Enter your salary, deductions, and other income — the calculator shows exact tax under both regimes so you can choose the one that saves more.

This 2-minute calculation can save Rs 5,000-50,000 in tax depending on your income level.