How to File Income Tax Return (ITR) Online: Step-by-Step Guide for FY 2025-26

Why Filing Your ITR is Important

Filing your Income Tax Return (ITR) is not just a legal obligation — it's a critical financial document that serves as proof of income for visa applications, loan approvals, credit card applications, and even rental agreements. In India, every individual whose total income exceeds the basic exemption limit (₹2.5 lakh under old regime, ₹3 lakh under new regime for FY 2025-26) is required to file an ITR.

Even if your income is below the taxable limit, filing an ITR is beneficial if you have TDS deducted, want to claim a refund, have foreign assets, or need income proof for financial applications. This guide walks you through the complete process — from gathering documents to submitting your verified return.

Which ITR Form Should You File?

Choosing the right ITR form is the first critical step. The Income Tax Department has 7 ITR forms (ITR-1 to ITR-7), but most individuals will use ITR-1, ITR-2, ITR-3, or ITR-4.

Documents Required for ITR Filing

Before you start, gather these documents based on your income sources:

For Salaried Employees

• Form 16: From your employer (contains salary details, TDS deducted, and deductions claimed).
• Form 16A/16B/16C: TDS certificates for interest, property sale, or other income.
• Bank statements: For interest income from savings accounts, FDs, and RD investments.
• Interest certificates: From banks for fixed deposits, recurring deposits, and savings account interest.
• Investment proofs: PPF, ELSS, life insurance, NSC, tax-saving FD receipts for 80C.
• Health insurance premiums: Receipts for 80D deduction.
• Home loan statement: Interest certificate and principal repayment statement from the bank.
• Rent receipts: If claiming HRA exemption (with landlord PAN if rent > ₹1L/year).
• Capital gains statements: From your broker or demat account for stock/MF transactions.
• Aadhaar and PAN: For identity verification.

For Business Owners and Freelancers

• Profit & Loss Statement and Balance Sheet
• Tax Audit Report (if applicable, under 44AB)
• GST returns (if registered)
• Bank account statements
• Proof of advance tax payments (if any)
• Capital gains statements (if applicable)
• Previous year ITR (for reference)

Step-by-Step Process to File ITR Online

Step 1: Log in to the Income Tax Portal

Visit www.incometax.gov.in. Click on 'Login' and enter your PAN (username) and password. If you don't have an account, click 'Register' and create one using your PAN, Aadhaar, and mobile number. Complete the registration with OTP verification.

Step 2: Choose 'File Income Tax Return'

Once logged in, go to the 'e-File' menu and select 'Income Tax Return.' Select the relevant Assessment Year (for FY 2025-26, the AY is 2026-27).

Step 3: Select the Correct ITR Form

Choose the applicable ITR form (ITR-1, ITR-2, ITR-3, or ITR-4) based on your income sources and category. The portal may suggest the appropriate form based on your profile.

Step 4: Choose Filing Mode

You have two options:

• Online Mode: Fill the form directly on the portal. This is recommended for most taxpayers as it has built-in validations, pre-filling from Form 26AS, and automatic tax calculation.
• Offline Mode: Download the JSON utility, fill it offline, and upload it back. Useful for complex returns with multiple schedules.

Step 5: Fill in Your Details

In the online mode, you need to complete these sections:

A. Personal Information: Name, PAN, Aadhaar, date of birth, address, email, mobile, and filing status (resident/ NRI).

B. Income Details: This is the most important section:

• Salary Income: Enter salary details from Form 16. The portal can auto-fill from your employer's data in many cases.
• House Property: Add rental income or declare "Nil" for self-occupied property. Claim interest deduction under Section 24(b).
• Capital Gains: Enter short-term and long-term capital gains from shares, mutual funds, and property. You'll need to fill Schedule CG with transaction details.
• Business/Professional Income: Enter your P&L details, turnover, and expenses.
• Other Sources: Interest income (savings account, FD), dividend income, family pension, etc.

C. Deductions (Chapter VI-A): Enter all eligible deductions:

• Section 80C: Up to ₹1.5 lakh (PPF, ELSS, EPF, life insurance, etc.)
• Section 80CCD(1B): Additional ₹50,000 for NPS
• Section 80D: Health insurance premium (up to ₹25,000 for self/family, ₹50,000 for senior citizens)
• Section 80E: Education loan interest (no upper limit)
• Section 80G: Donations to charitable institutions
• Section 80TTA/80TTB: Savings account interest deduction (₹10,000/₹50,000 for senior citizens)

D. Tax Paid and TDS: The portal auto-populates your TDS details from Form 26AS. Verify all entries. Enter advance tax and self-assessment tax payments (if any).

E. Tax Calculation: The portal automatically computes your total tax liability. Check if it matches your own calculation. If there's a tax payable, the portal will generate a challan (ITNS 280) for payment. If there's a refund, it will show the refund amount.

Step 6: Verify and Submit

Review all the information carefully. Once satisfied, click 'Preview and Submit.' You will see a summary of your return. Click 'I agree' and then 'Proceed to Verification.'

Verification Methods (How to Complete Your Filing)

Filing without verification is incomplete. You must verify your return within 30 days of filing. Choose one of these methods:

Most convenient: Aadhaar OTP verification. It's instantaneous and doesn't require any additional paperwork.

Deadlines and Late Fees

Late fees (Section 234F):

• If to
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