Ottawa to Washington DC: Government, Defence, and Tech Taxes, and Why Arlington Changes the Answer

Ottawa to Washington is the most direct government-to-government corridor on the map: defence contractors in Northern Virginia, consulting firms around the Beltway, think tanks, the Canadian Embassy, and the multilateral lenders all recruit from Ottawa's federal workforce. The tax picture depends on where you live: Ontario's combined top rate of about 53.5% becomes about 47.75% in the District, about 42.75% in Northern Virginia, or about 46% in the Maryland suburbs.

Key takeaways

• Ontario's roughly 53.5% top rate, including the provincial surtax, sets the departure tax. On a $300,000 unrealized gain, about $80,000.
• The District's top rate is 10.75%; Virginia's is 5.75%; Maryland's is 5.75% plus a county piggyback. Wages are taxed where you live.
• A Canadian public service pension paid to a DC-area resident is taxed federally with Canadian withholding capped at 15% under the treaty, and by the resident jurisdiction.
• 13% HST becomes 6% sales tax in the District and Maryland, about 6% to 7% in Northern Virginia.
• OHIP ends on permanent departure. Defence roles may require a green card, which sets the US residency start.

The Ontario departure

Departure tax applies to non-registered investments, private company shares, crypto, and foreign property at fair market value on the departure date. Ontario real estate, RRSPs, TFSAs, and registered pensions are excluded. Report on Form T1243, list holdings on Form T1161 if the total exceeds $25,000. The Ontario surtax ends on departure. OHIP ends on permanent departure.

The federal pension

Under Article XVIII of the treaty, Canadian tax on periodic pension payments to a US resident is capped at 15%; file NR301 before the first post-departure payment. The US taxes the pension federally with a foreign tax credit. The resident jurisdiction taxes the pension at its own rates; Virginia offers an age-based deduction that can shelter part of it. CPP and OAS are taxable only in the US.

Washington DC's side

The District taxes income on graduated brackets from 4% to 10.75%; Virginia's top rate is 5.75% with no county income tax; Maryland's top state rate is 5.75% plus a county piggyback tax of up to 3.2%, pushing the combined state and local rate near 9% in Montgomery and Prince George's Counties. All three tax wages where you live under their reciprocity agreements, so the residence decision, not the office location, sets the state layer. Sales tax is 6% in the District and Maryland and about 6% to 7% in Northern Virginia; property tax runs near 0.85% in the District and about 1% in the suburbs; the District and Maryland each have an estate tax (the District's exemption is about $4.99 million, Maryland's is $5 million), and Virginia has none.

The RRSP in the DC area

Federally deferred under Article XVIII of the treaty and deferred for the District, Virginia, and Maryland because all three start from federal AGI. Withdrawals face 25% Canadian withholding on lump sums, 15% on periodic RRIF payments within the treaty limit, a US foreign tax credit federally, and the resident jurisdiction's income tax.

The residence decision

A worker with a downtown DC office pays about 10.75% at the top as a District resident, about 5.75% as an Arlington or Fairfax resident, and close to 9% as a Bethesda or Silver Spring resident. On a $250,000 salary the difference between Virginia and the District is roughly $10,000 a year. Virginia also has no estate tax. For most Canadian movers, Northern Virginia is the tax answer; the commute and the schools decide the rest.

Who makes this move

DND and CSE professionals to the Northern Virginia defence contractors and their Beltway offices, Ottawa consultants to the Washington offices of the large firms, federal policy staff to think tanks and the Canadian Embassy, Ottawa cybersecurity professionals to the region's security firms, and federal economists to the World Bank and IMF.

Worked example

A former DND program manager moves to Arlington on August 31 for a defence contractor role with $180,000 of unrealized gain in a non-registered account, $500,000 in an RRSP, and a Kanata home sold in the departure year.

• Departure tax. $180,000 gain, $90,000 taxable, at about 53.5%: roughly $48,000.
• Home. Sold as a resident under the principal residence exemption.
• RRSP. No tax on departure; federal and Virginia deferral.
• Arlington. Virginia 5.75%; combined top rate about 42.75%. HST 13% becomes sales tax 6%. No Virginia estate tax.

Official sources

"Pensions may also be taxed in the Contracting State in which they arise and according to the laws of that State; but if a resident of the other Contracting State is the beneficial owner of a periodic pension payment, the tax so charged shall not exceed 15 per cent of the gross amount of such payment." — Canada-United States Tax Convention, Article XVIII(2)(a), https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-states-america-convention-consolidated-1980-1983-1984-1995-1997.html

"When you leave Canada, you are considered to have sold certain types of property (even if you have not sold them) at their fair market value (FMV) and to have immediately reacquired them for the same amount. This is called a deemed disposition and you may have to report a capital gain (also known as departure tax)." — Canada Revenue Agency, Leaving Canada (emigrants), https://www.canada.ca/en/revenue-agency/services/tax/international-non-residents/individuals-leaving-entering-canada-non-residents/leaving-canada-emigrants.html

For District taxable income over $1,000,000, the individual income tax is "10.75% of the excess above $1,000,000." — DC Office of Tax and Revenue, Individual Income Tax Rates, https://otr.cfo.dc.gov/page/dc-individual-and-fiduciary-income-tax-rates

Practitioner note

Ottawa-to-DC clients have two decisions that outweigh the job: which side of the Potomac to live on (about five points of income tax and an estate tax), and, for defence roles, how the green card date lines up with the Canadian departure date. We settle both before the offer is signed.

See also: Weighing Florida instead? See the Canada-to-Florida guide, or the same city's Ottawa to Miami guide.

Next step

Fairlight prepares the Ontario departure return, the residency-date reconciliation, and the first-year federal and state returns for Washington DC area clients. See cross-border pricing or book a call.