Moving from Delaware to Washington, DC: Residency, Taxes, and What to Prove

In Delaware

Delaware has no nurse-specific tax-home guidance; the general IRS tax-home rules under Publication 463 govern whether stipends stay tax-free, and Delaware's own residency status for a nurse turns on the same 183-day-plus-abode or domicile tests everyone else faces under 30 Del. C. § 1103.

In Washington, DC

DC's federal prohibition on taxing nonresident income is unusually good news for travel nurses. A nurse whose tax home is genuinely elsewhere and who works a contract at a DC hospital, such as Georgetown, MedStar Washington Hospital Center, Children's National, or GW Hospital, owes no DC income tax on that assignment's wages or stipends, so long as they are not domiciled in DC and have not maintained a DC abode for 183 or more days; there is no DC-source nonresident withholding the way there would be almost anywhere else with an income tax. The exposure runs the other way: a nurse who takes back-to-back DC-area contracts in the same leased apartment can cross the 183-day abode-maintenance threshold and become a DC statutory resident taxed on all worldwide income, independent of what their agency's paperwork lists as their tax home.

In Delaware

Delaware has no major professional sports franchises, so it runs no state-specific jock-tax apportionment regime. A Delaware-domiciled athlete owes Delaware tax on worldwide income (with credits for tax paid to other states on away-game duty days) but faces no in-state team creating reciprocal audit interest from opposing states.

In Washington, DC

DC is one of the only income-tax jurisdictions in the country with no jock tax at all: Congress has repeatedly blocked DC Council attempts to tax nonresident athletes' duty-day income under the same Home Rule Act provision that bars any DC tax on nonresidents generally. Visiting players who take the court or ice at Capital One Arena (Wizards, Capitals) or the field at Nationals Park (Nationals) owe zero DC income tax on those games, unlike visiting players in every state that hosts an NBA, NHL, MLB, or NFL team. The Commanders currently play home games at Northwest Stadium in Landover, Maryland, so visiting teams' duty days there generate Maryland exposure rather than DC exposure; that changes once the team's planned stadium at the RFK campus in DC opens, expected around 2030, though DC's no-jock-tax rule means it still won't create DC tax on visiting players even then. DC-domiciled players on the Wizards, Capitals, Nationals, Mystics, or Commanders remain fully taxable by DC as residents on all of their income, including duty days played in states that do tax them as visitors.

In Delaware

Delaware's beach communities (Rehoboth, Bethany, Lewes) draw significant seasonal second-home ownership from Pennsylvania, Maryland, and Washington D.C. Anyone who keeps a Delaware beach house and crosses 183 aggregate days of Delaware presence in a year, while maintaining that home as a place of abode, becomes a Delaware statutory resident regardless of where they claim domicile, the same mechanic that applies in New York or Vermont.

In Washington, DC

The DC-specific snowbird risk differs from other high-tax jurisdictions: because the statutory test counts days a DC home is maintained rather than days physically present, a person who keeps a DC pied-a-terre available year-round while wintering elsewhere can cross 183 days of abode-maintenance even if they were only physically in DC a fraction of that time. Genuinely renting the DC unit out, with no reserved access for the taxpayer, is the fact pattern that breaks the abode-maintenance count; simply leaving it empty or available for personal use most of the year does not.

In Delaware

This is Delaware's most distinctive special-situation fact: Delaware applies a convenience-of-the-employer rule, treating work done from home by an employee of a Delaware-based company as Delaware-source income whenever the remote arrangement is for the employee's own convenience rather than a genuine employer requirement. Combined with no reciprocity agreements with any neighboring state, this leaves remote workers for Delaware employers in Pennsylvania, New Jersey, or Maryland at real risk of double taxation unless their home state grants a full credit for the Delaware tax.

In Washington, DC

Because DC cannot tax nonresidents at all, it has no convenience-of-the-employer rule and no equivalent risk for someone who moves out of DC and keeps working remotely for a DC-based employer; once residency has genuinely ended, that income is simply outside DC's reach. The live issue for remote workers is the same statutory residency question everyone else faces: keeping a DC apartment as a part-time base while working remotely from elsewhere can, on its own, add up to 183 days of maintained abode access and trigger DC statutory residency regardless of where the paycheck is sourced.

In Delaware

Delaware follows the federal SCRA and MSRRA framework: a service member's home-of-record does not change solely because military orders station them in Delaware, and an accompanying spouse can generally elect the service member's domicile state under MSRRA for tax purposes.

In Washington, DC

DC follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act. A servicemember whose legal residence is outside DC does not become a DC domiciliary or statutory resident solely because military orders station them in the District, and military pay is not DC-source income. A nonresident military spouse living in DC under MSRRA can file Form D-4 with their employer to stop DC withholding, and either spouse can use Form D-40B to recover DC tax withheld in error.

In Delaware

Delaware has no major hub airport for airline crew bases, though its proximity to Philadelphia International makes Delaware a common domicile choice for crew who want to avoid Pennsylvania's local wage taxes. The federal carve-out under 49 U.S.C. § 40116 (crew wages taxable only by the state of residence or a state earning over 50% of pay) governs regardless.

In Washington, DC

DC itself has no commercial airport within its borders; Reagan National and Dulles are in Virginia and BWI is in Maryland, so DC does not have an airline crew base the way a hub city like Atlanta or Charlotte does. The federal wage-source rule for air carrier employees (49 U.S.C. § 40116) is largely moot for DC specifically, since DC's own bar on taxing nonresident income already goes further than that carve-out for any nonresident flight crew who might occasionally overnight in the District.