ESI registration is the one-time online enrolment of an establishment with the ESIC, after which it receives a 17-digit employer code and can register its employees. It is due once the establishment crosses the coverage threshold, which is generally 10 or more persons, and not when the first ESI-eligible employee happens to be hired.

When registration is due

ESI sits in Chapter IV of the Code on Social Security, 2020 since 21 November 2025, and the ESI Act, 1948 stands repealed. The headcount test is ten or more persons in a non-seasonal establishment, and a few states historically used 20. The window commonly cited for registering is 15 days from the date the scheme becomes applicable to you. Because the Code’s rules are still bedding in and the older rules continue through a transition reported to end on 20 November 2026, check the deadline on the portal rather than rely on a blog. Contributions are owed from the date of applicability, so registering late means interest and damages on arrears.

Count everyone who is employed, not just permanent staff, before deciding you are under the line. The background to the test is in the ESI Act, 1948 page.

The process

1. Register the employer on the ESIC portal and fill in establishment details, ownership, nature of business and address.
2. Upload documents, typically PAN, incorporation or partnership papers, GST or shops licence, address proof, a cancelled cheque and the employee list with wages.
3. Submit and wait for verification, which sources put at roughly one to three weeks.
4. Receive the registration letter and the 17-digit code, which is for life and used on every challan. Additional branches can be handled through sub-codes.
5. Register each covered employee, which generates the insurance number behind the Pehchan card.

Frequently asked questions

Can I register before I reach the threshold?

Voluntary coverage may be possible; ask the regional ESIC office. Most small employers wait until the threshold forces it, but it is worth knowing the wage ceiling that decides who is covered.

Is a separate registration needed for each state?

The 17-digit code belongs to the establishment, and branches are usually handled through sub-codes. Check the position with the regional ESIC office before opening a new location.

Who handles it, HR or finance?

Whoever owns statutory compliance. Many firms push it through a payroll software workflow so employee records match the portal.

Once registered, set up the monthly cycle with ESI challan and return and keep dates on the compliance calendar.