Log in to the Income Tax e-Filing portal using your PAN and password
Go to the e-File menu and select Income Tax Return
Choose File Income Tax Return
Select the relevant Assessment Year
Select Filing Type as Revised Return under section 139(5)
Enter the Acknowledgement Number and Date of Filing of the original return
Choose the applicable ITR form
Fill in the corrected income, deductions, exemptions, and tax details
Validate all entries and compute tax liability
Pay any additional tax, interest, or late fee if applicable
Submit the revised return electronically
Verify the revised return using Aadhaar OTP, net banking, EVC, or by sending ITR-V to CPC
Keep the revised return acknowledgment for records