Financial Services

How to File Income Tax Return Online: Step-by-Step Guide

4 min readIndia LawBy G R HariVerified Advocate

Quick Answer

> One line summary: Filing your income tax return online is mandatory for most taxpayers, and this guide walks you through the entire process on the Income Tax Department's e-filing portal.

What documents do I need before I start filing my ITR online?

Before you begin, gather your Form 16 (if salaried), Form 26AS (tax credit statement), bank account statements, and investment proofs. You will also need your Aadhaar number and PAN card. For business income, keep your profit and loss account, balance sheet, and audit report (if applicable).

Form 26AS is available on the Income Tax Department's portal and shows all tax deducted at source (TDS) against your PAN. Cross-check this with your Form 16 to ensure all TDS credits are accounted for. If you have income from other sources like rent, capital gains, or interest, keep those documents ready as well.

Which ITR form should I use?

The correct form depends on your income type and status. ITR-1 (Sahaj) is for resident individuals with income up to ₹50 lakh from salary, one house property, and other sources. ITR-2 is for those with capital gains or more than one house property. ITR-3 is for business or professional income. ITR-4 (Sugam) is for presumptive business income.

If you are unsure, use the ITR form selection tool on the e-filing portal. Selecting the wrong form can lead to processing delays or a defective return notice. For most salaried employees with no capital gains, ITR-1 is appropriate.

How do I register and log in to the e-filing portal?

Go to the Income Tax Department's e-filing portal at incometax.gov.in. If you are a new user, click "Register" and select "Taxpayer" as the user type. Enter your PAN, name, date of birth, and mobile number. You will receive an OTP for verification. Set a password and complete the registration.

Existing users can log in with their PAN and password. If you have forgotten your password, use the "Forgot Password" option to reset it via OTP. Once logged in, you will see the dashboard with options to file returns, view Form 26AS, and check your filing history.

What is the step-by-step process to file my ITR online?

After logging in, follow these steps:

  1. Select the assessment year: Choose the year for which you are filing (e.g., 2024-25 for income earned in FY 2023-24).
  2. Choose the ITR form: Select the correct form based on your income type.
  3. Fill in your details: Enter personal information, income details, deductions under Chapter VI-A (like 80C, 80D), and tax paid.
  4. Verify Form 26AS: The portal will auto-populate TDS details. Ensure they match your records.
  5. Calculate tax: The system will compute your total tax liability or refund.
  6. Upload or fill online: You can either fill the form online or upload a pre-filled XML file (if using third-party software).
  7. Preview and submit: Review all entries. If correct, click "Submit".
  8. E-verify: After submission, you must verify the return. Options include Aadhaar OTP, net banking, or sending a signed ITR-V to CPC Bengaluru.

How do I e-verify my income tax return?

E-verification is mandatory within 30 days of filing. Without it, your return is considered not filed. The easiest method is Aadhaar OTP verification. On the portal, select "E-Verify" and choose "Aadhaar OTP". An OTP will be sent to your registered mobile number. Enter it to complete verification.

Other methods include net banking (if your bank is listed), bank account validation, or sending a physical signed copy of ITR-V to the Centralized Processing Centre (CPC) in Bengaluru. The ITR-V must reach CPC within 120 days of filing. E-verification is faster and recommended.

What if I made a mistake after filing?

If you discover an error after filing, you can file a revised return. The Income Tax Act allows you to revise your return before the end of the relevant assessment year or before the completion of assessment, whichever is earlier. For example, for FY 2023-24, you can revise until December 31, 2024.

To revise, log in to the portal, go to "My Returns", select the filed return, and click "Revise". The process is similar to filing a new return. You must e-verify the revised return as well. Note that you cannot revise a return after the deadline unless the assessment is still pending.

What You Should Do Next

If you have straightforward salary income, you can file your ITR yourself using the portal. However, if you have capital gains, business income, or foreign assets, consult a qualified chartered accountant to avoid errors and penalties.


This page provides preliminary information. It is not legal advice. For your matter, consult a qualified professional.