Udyog Aadhaar vs Udyam Registration: What Changed, and Why the Old Number Still Shows Up in Lending Files

The government’s own migration deadline for existing UAM/EM-II holders was originally set at 31 March 2021, then pushed back multiple times before landing on a final cutoff of 30 June 2022. The exact number of extensions between those two dates isn’t established, so treat “multiple extensions” as the accurate description rather than a specific count.

Most bank blog posts on this topic (IndusInd Bank’s live explainer is one example) stop at the borrower-facing version of this story: here’s what changed, here’s how you re-register on the Udyam portal. What they don’t cover is the harder question for a lender’s own credit and KYCoperations: what do you do with a live loan file where the borrower’s record still shows only the old Udyog Aadhaar Number and was never updated to a Udyam Registration Number?

There is a partial answer, and a real gap.

The partial answer. RBI’s clarifying circular to all commercial banks, cooperative banks, all-India financial institutions, and NBFCs, dated 21 August 2020, directed lenders to obtain the Udyam Registration Certificate from borrowers going forward. But the same circular carried a grandfather clause: for credit facilities already sanctioned before the transition, the borrower’s existing Udyog Aadhaar or EM-II registration submitted earlier “shall be valid till the expiry of the loan tenure,” even past the general migration deadline.

The gap.No RBI or MSME Ministry guidance found in this research specifically addresses how a lender should treat a currently-open loan file in 2026 where the borrower’s KYC or credit record still references only the old UAN and was never updated since. The 2020 grandfather clause was written for loans sanctioned around the original transition. It’s not clear from public sources whether that same grandfathering language is still operative for loans originated years later, or for loans renewed since the June 2022 final deadline passed. This piece does not resolve that ambiguity, because the sourced material doesn’t resolve it either. A lender relying solely on the 2020 circular language for a file renewed in 2026 is extrapolating, not following a confirmed rule.

What current guidance does establish clearly is the classification side. For Priority Sector Lending purposes, RBI’s MSME FAQ document (updated 29 July 2025)states banks “shall be guided by the classification recorded in the Udyam Registration Certificate (URC)/Udyam Assist Certificate (UAC),” meaning PSL classification today is explicitly tied to the Udyam-based record, not any legacy UAM record. That’s a firm anchor point even where the file-migration question isn’t.

For micro enterprises too informal to hold PAN or GSTIN, the Udyam Assist Platform (UAP), managed by SIDBI, issues an “Udyam Assist Certificate” that’s treated on par with the standard Udyam Registration Certificate for PSL benefit purposes, a route worth knowing about when a borrower can’t produce a conventional URN.

MSME classification isn’t something a lender decides. It’s the statutory responsibility of the Ministry of MSME under the MSMED Act, 2006. Current thresholds, per Gazette Notification S.O. 1364(E), dated 21 March 2025:

The classification also updates itself. An enterprise is required to update GST and ITR details annually on a self-declaration basis, with the government revising the recorded classification from data pulled directly from the Income Tax and GST departments rather than requiring the business or its lender to manually re-apply; see our guide on GST verification and GSTIN checks for how that data link works in practice. If an enterprise crosses a threshold (a micro business growing into small-enterprise turnover, for instance), the reclassification takes effect from 1 April of the following financial year, automatically, with no action required from the business owner. For a lender, the practical implication is that the Udyam record is meant to stay current on its own, which is exactly why a loan file still anchored to a frozen, never-updated UAN is a bigger problem than a simple documentation formality.

Read together, the 2020 grandfather clause and the 2025 PSL guidance point in slightly different directions, and that gap is the actual operational risk here. The grandfather clause protects a specific class of pre-2020 loans for their original tenure. It says nothing about what replaces that protection once a loan is renewed, restructured, or newly originated years later. Meanwhile, current PSL guidance is unambiguous that classification decisions today rest on the Udyam record, not the UAN. The practical implication is that a credit or KYC team carrying legacy UAM references on active files can’t assume the 2020 circular still covers them by default, since that circular was written for a specific transition-era cohort, and nothing in the sourced material confirms it was ever extended to file renewals since. Until RBI or the MSME Ministry issues guidance that directly addresses that scenario, the more defensible operational stance is to treat any file still carrying only a legacy UAN as a candidate for Udyam-record verification at the next natural touchpoint (renewal, review, or restructuring) as part of the broader customer onboarding software workflow, rather than to lean on a 2020 clause whose scope for that situation was never confirmed.

This is analysis of what the sourced material does and doesn’t establish, not a restatement of a rule. No source found for this piece states that lenders are required to re-verify at renewal. It’s the reasonable reading of where the grandfather clause’s protection stops and the current PSL rule starts.