CIN (Challan Identification Number) is a unique identification number generated by banks when an individual or entity pays tax online.
To find the CIN of the advance tax paid, you need to follow the below steps:
Alternatively, you can also view the CIN details of the advance tax paid through Form 26AS (up to AY 2022-23) and in the AIS (AY 2023-24 onwards) under the Details of Tax Paid (other than TDS or TCS) available on the Income Tax e-filing website.
It is important to note that you can recover the CIN details from your bank within 90 days of the transaction date.