What UDIN verification is, and why unverified CA certificates get financial documents rejected abroad.

By Kanoons · 4 min read · Last verified 2025-03-27

UDIN — Unique Document Identification Number — is an 18-digit identifier that a practising Chartered Accountant generates for every certificate, report or attestation they issue, and it lets any third party (an embassy, bank, or immigration consultant) verify on ICAI's portal that the document is genuine and was actually issued by that CA.

Education and immigration consultants handling client financial documentation — net worth certificates, funds-sponsorship letters, income certificates — increasingly need to confirm every CA report carries a valid UDIN before submitting it on a client's behalf, since receiving-country authorities have tightened scrutiny on fabricated or informally-issued financial certificates in recent years.

For consultants managing volume across many client applications, building a standard check — verify the UDIN on ICAI's portal before submission — into the process avoids the far costlier outcome of a client's visa or admission being rejected over a document that turns out not to be independently verifiable.