In order to file an e-TDS Return, the payer/ deductor needs to attach Challan Status Inquiry (CSI) file for that Quarter. You can download the Challan Status Inquiry (CSI) from OLTAS.

Following are the two ways to download it: 

  1. CIN Based: Using BSR Code of Collecting Branch, Challan Paid on Date & Challan Serial No. and amount (optional). 

  2. TAN Based: Using TAN and Challan Paid on Date. 

Read More: How to download CSI file?