Sense with Cents

If you e-file Form 941, you need a PIN — and it is not the same as any other IRS PIN you may have. It is not your EFTPS PIN, your tax preparer PIN, or any other identifier. It has one job: it serves as your electronic signature on employment tax returns.

The 941 e-file PIN works as your electronic signature. Because Form 941 is filed under penalty of perjury, the IRS requires a PIN tied to a specific, identified person who has accepted legal responsibility for the return. The PIN is how that signature works in an electronic filing.

One PIN covers the entire 94x form family — 940, 941, 943, 944, and 945. It is registered to the EIN, not to a specific form.

Filing for a single business

You register with the IRS for a PIN linked to a specific Employer Identification Number. That PIN can only be used for that EIN. The IRS limits who qualifies — responsible parties only. That includes officers, owners, sole proprietors, and certain non-owner employees who meet the IRS definition. Apply well before your first filing deadline — the full registration process can take up to 45 days. When your PIN arrives by mail, you must sign and return the statement of receipt within 10 days to activate it.

Filing for clients

If you prepare and file 941s for clients, you cannot use your own PIN or theirs. The correct path is to register with the IRS as a Reporting Agent. A Reporting Agent has specific documentation on file with the IRS — Form 8655, signed by each client — showing that employer has authorized them to file on their behalf. That authorization serves as the responsible party identification. The Reporting Agent PIN links to those records. Reporting Agents also require a 6-digit Electronic Filing Identification Number (EFIN).

Even if a client gives you their PIN, you cannot use it

The PIN is a signature. You cannot sign for someone else this way, even with their knowledge and permission. Using someone else’s PIN — even a client who hands it to you willingly — is not permitted.

If you prepare 941s for others and have not yet registered as a Reporting Agent, that registration should happen before your next filing is due.

If you are weighing whether to handle payroll yourself or use a service, see DIY Payroll vs. Payroll Service. For more on e-filing using Medlin Payroll, see the Medlin Payroll online help.