If you have selected the wrong assessment year then follow the below-mentioned steps:
Step 1: Even if the assessment year you selected while paying the tax is wrong, provide the payment information when filing your IT returns for the year.
Step 2: You can ask your jurisdictional assessing officer's office to fix the challan for the 'assessment year' inaccuracy. On the income tax department's e-filing website, you may find the location of the assessing officer's office. If you have just paid a challan, you can request that the bank to amend the challan within 7 days after the deposit date.
Step 3: When the assessing officer (AO) examines your returns, he will most likely issue a warning since the payment information does not match the records.
Step 4: Respond to the AO with the specifics of the problem during the tax payment.
Step 5: You must also file a Section 154 correction of return.
Step 6: If your rectification request convinces the AO, he has the authority to make the appropriate modifications in your return. He will make the necessary modifications to the IT returns and shut it off after he has approved your request.