Udyog Aadhaar, introduced in 2015, was the earlier MSME registration system. It was replaced by Udyam Registration in 2020 to simplify and streamline the MSME registration process. The key differences between Udyog Aadhaar and Udyam Registration are given below:
| Parameter | Udyog Aadhaar | Udyam Registration |
|---|---|---|
| Registration Process | Required submitting multiple business and applicant details. | Requires basic business and applicant details, with information linked through PAN and other government databases. |
| Mode of Registration | Registration was available through the earlier Udyog Aadhaar system. | Completely online and paperless. |
| Validity and Re-registration | Existing Udyog Aadhaar/EM-II registrations were required to migrate to Udyam Registration. | Udyam Registration is permanent and does not require renewal. |
| Status for Existing Businesses | Earlier MSME registration system. | Current MSME registration system. |
Note: Existing businesses registered under Udyog Aadhaar/EM-II should migrate to Udyam Registration as per the applicable government requirements.









