To handle DC withholding tax registration, file the Combined Business Tax Registration (Form FR-500) electronically through MyTax.DC.gov before you cut your first paycheck for work performed in the District. The application sets up your withholding account and produces the account number you’ll use for every return and payment. Your legal duty to withhold begins with the first wage payment, not when the account number arrives, so register early rather than trying to backfill.
Who Has to Register
D.C. Code ยง 47-1812.08 requires every employer paying wages to deduct and withhold District income tax.1D.C. Law Library. District of Columbia Code 47-1812.08 – Withholding of Tax There is no minimum-dollar threshold. If you pay someone for work done inside D.C., you withhold, and you need an account to do it. That applies whether the business is based in the District, in another state, or abroad. A Virginia company with staff commuting into a D.C. office carries the same obligation as a firm headquartered on K Street.
One boundary worth naming: withholding applies to employees, not independent contractors. Misclassifying a worker to avoid the duty creates liability, and D.C. looks at how much control you exercise over the worker’s schedule, tools, and methods rather than what the contract label says.
What to Gather Before You Start the FR-500
Pull these together first. Missing a piece means stalling partway through the application:
- Federal Employer Identification Number (FEIN). Apply through the IRS first if you don’t have one. Sole proprietors without employees may use their Social Security Number instead.
- Your business address in the District.
- Names, titles, home addresses, and Social Security Numbers (or ITINs) for the proprietor, all partners, or principal corporate officers.
- Legal business name and any trade names. Trade names must be registered with the Department of Licensing and Consumer Protection before you file.
- The actual or expected date you first pay wages for D.C. work. This sets the start of your tax liability, and entering a date later than reality can produce retroactive penalties once OTR catches the gap.
- Fiscal year-end date, so OTR can align your reporting periods.
Corporations, LLCs, limited partnerships, and nonprofits also need to have filed their articles of incorporation or organization with the DCRA Corporations Division.2Office of the Chief Financial Officer. Combined Registration Application for Business DC Taxes/Fees/Assessments
Filing the FR-500 on MyTax.DC.gov
From the MyTax.DC.gov homepage, choose the option to register a new business. That takes you into the FR-500 form.3Office of Tax and Revenue. New Business Registration Enter the information above, select the District taxes that apply to your business (withholding is one of several checkboxes), and submit electronically. You should receive a confirmation that OTR has your application. Once approved, OTR issues your unique withholding tax account number, which you’ll need for every return you file and every payment you make.
Start withholding from paychecks on schedule even if the account number hasn’t arrived yet. Filing catches up; the withholding obligation does not pause.
Employee Forms You Need on File
Registration is only the employer half of setup. You also need a withholding form from every employee, or you’ll withhold incorrectly.
Form D-4 for D.C. Residents
Each new employee who lives in D.C. and is subject to District income tax completes Form D-4, the D.C. Withholding Allowance Certificate, and gives it to you to keep on file.4Government of the District of Columbia Office of Tax and Revenue. DC Withholding Allowance Certificate – Form D-4 The D-4 is separate from the federal W-4 and controls District allowances. If an employee claims 10 or more exemptions, or you have reason to believe the form contains false information, send a copy to OTR’s Compliance Administration. Employees must also file a new D-4 within 10 days if their number of allowances decreases. To claim total exemption on the D-4, an employee must meet the District’s criteria and also qualify for exempt status on the federal W-4.
Form D-4A for Nonresidents
D.C. has reciprocity with Maryland and Virginia. An employee who lives outside the District and keeps a permanent residence elsewhere can file Form D-4A, the Certificate of Nonresidence, to avoid D.C. withholding altogether.5Government of the District of Columbia. Certificate of Nonresidence in the District of Columbia To qualify, the employee must live outside D.C. for the entire tax year and not spend 183 or more days in the District during the year. Spouses of military service members also qualify. If a nonresident later becomes a D.C. resident, they must promptly file a D-4 to replace their D-4A. Without either form on file, withhold D.C. tax by default.
What Filing Looks Like After You’re Registered
OTR assigns your filing frequency based on the size of your annual withholding liability. Smaller employers file quarterly on Form FR-900Q; larger employers file monthly on Form FR-900M. The quarterly threshold generally applies to employers with annual withholding under $5,000. All withholding returns are filed electronically through MyTax.DC.gov.6Office of the Chief Financial Officer – Office of Tax and Revenue. Employer/Payor Withholding Tax – Reporting Instructions
At year-end, every employer files the FR-900B annual reconciliation return and transmits copies of every employee’s W-2 to OTR. Both are due by January 31 of the following year. OTR compares the total you reported withholding against the amounts on each W-2, so keeping your quarterly or monthly filings aligned with payroll throughout the year keeps reconciliation quiet.
Penalties for Missing Deadlines
D.C. imposes separate penalties for failing to file on time and for failing to pay the tax shown on the return. Each starts at 5% of the unpaid tax for the first month and adds another 5% for each additional month, capped at 25%. When both penalties apply for the same month, the failure-to-file penalty is reduced by the failure-to-pay amount, so you’re not stacking a full 10% for a single month of being late on both counts.7D.C. Law Library. District of Columbia Code 47-4213 – Failure to File Return or to Pay Tax Interest runs at 10% per year, compounded daily, on any underpayment.8Office of the Chief Financial Officer, Office of Tax and Revenue. 2026 Estimated Payment for Individual Income Tax Abatement requires showing reasonable cause and no willful neglect, which is difficult when OTR can see you were registered and simply didn’t file.
Closing the Account When You’re Done
If you stop paying D.C. wages or shut down, file a final withholding return on MyTax.DC.gov and check the box marked “Is this your final return?”6Office of the Chief Financial Officer – Office of Tax and Revenue. Employer/Payor Withholding Tax – Reporting Instructions Do this when operations end, not at the next quarter or year-end. An open account keeps OTR expecting returns, and missed deadlines generate the same penalties as if you still owed tax. File the final return, submit any remaining W-2s, and close it cleanly.