---
kind: "section"
citation: "27 C.F.R. § 19.243"
title: "27"
number: "19.243"
heading: "Application for employer identification number."
url: "https://uscodex.org/cfr/27/19.243"
---

# §19.243. Application for employer identification number.

- (a) **Use Form SS-4.** The proprietor must obtain an employer identification number (EIN) by filing an application with the Internal Revenue Service (IRS) on Form SS-4. Form SS-4 is available from Internal Revenue Service Centers, from IRS District Directors, the IRS Web site at https://www.irs.gov, or from TTB's National Revenue Center. The proprietor may file this form with IRS by mail, telephone, or fax by following the instructions on the form.
- (b) **Time limit.** If the proprietor has not already received, or applied for, an EIN at the time that the first return on form TTB F 5000.24, Excise Tax Return, is filed, the proprietor must file such application for an EIN not later than seven days from the date of filing the TTB F 5000.24.
- (c) **One EIN only.** Each proprietor must obtain and use only one EIN, regardless of the number of places of business for which the proprietor is required to file a tax return under this subpart.

## Notes

### Amendments

[T.D. TTB-92, 76 FR 9090, Feb. 16, 2011, as amended by T.D. TTB-196, 89 FR 87939, Nov. 6, 2024]

### Authority

Authority: 19 U.S.C. 81c, 1311; 26 U.S.C. 5001, 5002, 5004-5006, 5008, 5010, 5041, 5061, 5062, 5066, 5081, 5101, 5111-5114, 5121-5124, 5142, 5143, 5146, 5148, 5171-5173, 5175, 5176, 5178-5181, 5201-5204, 5206, 5207, 5211-5215, 5221-5223, 5231, 5232, 5235, 5236, 5241-5243, 5271, 5273, 5301, 5311-5313, 5362, 5370, 5373, 5501-5505, 5551-5555, 5559, 5561, 5562, 5601, 5612, 5682, 6001, 6065, 6109, 6302, 6311, 6676, 6806, 7011, 7510, 7805; 31 U.S.C. 9301, 9303, 9304, 9306.

### Source

Source: T.D. TTB-92, 76 FR 9090, Feb. 16, 2011, unless otherwise noted.

### Amendments

[T.D. TTB-92, 76 FR 9090, Feb. 16, 2011, as amended by T.D. TTB-196, 89 FR 87939, Nov. 6, 2024]