What is UDIN?
Unique Document Identification Number
A UDIN is a unique number a Chartered Accountant generates for each certificate they sign, letting buyers verify that a CA certificate in a bid is genuine.
What is a UDIN?
UDIN stands for Unique Document Identification Number. It is generated by a Chartered Accountant through the Institute of Chartered Accountants of India (ICAI) system for each document they certify or attest, and is printed on that document.
Anyone holding the document can check the UDIN online against ICAI’s records, which helps to catch forged or altered certificates.
Where it appears in bids
Tenders often ask for financial details to be certified by a CA. These certificates are where buyers usually look for a UDIN.
- Annual turnover certificates for eligibility
- Net worth or solvency-related certificates
- Audited financial statements and audit reports
- Local content or other declarations that the tender asks a CA to certify
Tips for bidders
Ask your CA to include the UDIN on every certificate meant for a tender, and check that the details on the certificate match the UDIN record.
A certificate without a UDIN, or with one that does not verify, may be treated as invalid or raised as a shortfall. Check the tender document for its exact requirement.
Common questions
Common questions about UDIN in government tenders.
ICAI requires its members to generate a UDIN for the certificates and reports they sign. Many tenders also state that CA certificates without a UDIN will not be accepted.
UDINs can be verified online on ICAI’s UDIN portal using the number and the details on the document.
Let's talk about your workflows
Book a discovery call or send us a message.
We’ll get back to you within one business day.
30 minutes to walk through how your team bids or procures today. No pitch, no pressure—just a focused conversation about your tender workflow.
- See where AI can save your team the most time
- See QuickBid on tenders from your industry
- Get a recommended product and setup
Schedule a discovery call
Tell us about your goals, and we’ll tailor our expertise to fit your needs. Fill out the form below, and we’ll get back to you soon.