Income tax payment wrong year

In the case of the following errors, the bank branch accepting the tax payments are permitted to correct the challan data and in the time frame mentioned below:

• Amount of tax – within 7 days from the deposit of challan
• Assessment year – within 7 days from the deposit of challan
• Major head code – within 3 months from the deposit of challan
• Minor head code – within 3 months from the deposit of challan
• PAN of the taxpayer – within 7 days from the deposit of challan
• Nature of payment – within 3 months from the deposit of challan

Hence, a taxpayer has to make an application for correction within the time period mentioned above.

Further to Dhirajlal's reply, since in your case the time limit has expired, you need to approach your tax officer and request him to carry out the correction. Alternatively, request him to grant you credit for this tax paid and thereby claim refund in AY 2020-21