How to check Aadhar link with pan: A crucial deadline looms for PAN holders in India. By December 31, 2025, all PANs must be linked with Aadhaar. Failure to comply will render PANs inoperative from January 1, 2026. This impacts tax filings, bank accounts, and investments. The process involves a fee and can be completed via the e-Filing Portal. Check your link status promptly.