Tax Registration

Tax registration is the second step in starting a business in DC. A tax identification number (i.e., FEIN, EIN, SSN) is a 9-digit number issued by the IRS to classify taxpayers and collect taxes.


There are two (2) steps to register a tax number:

Step 1. Apply for a tax number from the Internal Revenue Service

Step 2. Register tax number with the DC Office of Tax and Revenue

External Resource

Department of Consumer and Regulatory Affairs

1100 4th Street, SW, Washington, DC, 20024

Office Hours: Monday,Tuesday,Wednesday,Friday 8:30am to 4:30pm and Thursday 9:30am - 4:30pm

Phone: (202) 442-4400

This is map view of the location