Determination engine

Which state do you actually withhold in?

Reciprocity, convenience-of-the-employer, nonresident thresholds and unemployment localization, applied together to one employee's facts. Every answer cites the state source it came from.

No state income tax withholding applies.
District of Columbia and Florida have a reciprocal agreement, so the work state stands down once the exemption certificate is on file.
Income tax withheld to
None
No wage income tax applies to this combination.
Employee certificate
D-4A
Certificate of Nonresidence in the District of Columbia
Unemployment insurance
District of Columbia
Localized under factor 1: Localization.
Reciprocal agreement
Yes
District of Columbia exempts Florida residents.
File D-4A with the employer
Reciprocity is not automatic. Until the employee files D-4A (Certificate of Nonresidence in the District of Columbia) you are legally required to withhold District of Columbia tax. Keep the signed form on file; it is not sent to the state.
No income tax withholding at all
Florida has no wage income tax and the agreement removes the District of Columbia obligation, so no state income tax is withheld for this employee.
District of Columbia paid family and medical leave contributions
The DC Paid Family Leave tax is 0.75% of covered wages for 2026 and is 100% EMPLOYER-funded - there is no employee contribution. Employee contribution: 0%. These follow the state of unemployment coverage, not the income tax state.
Employer registrations you will need
Get the form
D-4A — District of Columbia (official state source)
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This is a determination aid, not advice. StateSide encodes published state rules and applies them mechanically to the facts you enter. It does not know your entity structure, your nexus history, your equity compensation, or the dozens of exceptions that turn a clean rule into a judgement call. Every determination cites the state source it came from — verify against that source, and take anything consequential to a payroll tax professional before you act on it.