Ottawa to Boston: Government to Research, Biotech, and Massachusetts's Flat 5%

Ottawa's federal scientists, health regulators, defence engineers, and university researchers have a natural landing in Boston's research institutions, hospital systems, biotech firms, and defence contractors. The move is a large tax cut: Ontario's combined top rate of about 53.5% becomes about 42% in Massachusetts. The Ontario side carries the departure tax, the OHIP wind-down, and any federal pension; the Massachusetts side carries its own RRSP and estate rules.

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.
• Massachusetts taxes most income at a flat 5%, plus a 4% surtax above roughly $1.1 million; short-term gains at 8.5%.
• A Canadian public service pension paid to a Massachusetts resident is taxed federally with Canadian withholding capped at 15% under the treaty, and by Massachusetts at 5%.
• 13% HST becomes 6.25% sales tax.
• Massachusetts's estate tax applies above $2 million. OHIP ends on permanent departure.

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 in Massachusetts

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, and Massachusetts taxes it at 5%. CPP and OAS are taxable only in the US.

Boston's side

Flat 5% on most income with a 4% surtax above the indexed threshold; short-term gains at 8.5%; no city income tax; 6.25% sales tax; property tax near 1% to 1.2%; estate tax above $2 million with rates to 16%.

The RRSP in Massachusetts

Federally deferred under the treaty. Massachusetts applies its own rules to treaty-exempt income; confirm the RRSP position before assuming state deferral.

Who makes this move

Federal scientists to Boston's research institutions and hospital systems, Health Canada regulators to biotech regulatory affairs roles, DND and CSE engineers to the region's defence contractors and research labs, and Ottawa academics to Boston's universities.

Worked example

A Health Canada scientist and spouse move to Boston on September 30 with a $35,000-a-year public service pension, $140,000 of unrealized gain in a non-registered account, $500,000 in RRSPs, and a Glebe home sold in the departure year.

• Departure tax. $140,000 gain, $70,000 taxable, at about 53.5%: roughly $37,000.
• Pension. NR301 filed; 15% Canadian withholding; taxed federally with a foreign tax credit and by Massachusetts at 5%.
• RRSP. Federally deferred; Massachusetts position documented.
• Home. Sold as a resident under the principal residence exemption.
• Boston. Combined top rate about 42%. HST 13% becomes sales tax 6.25%.

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

Only the portion of a taxpayer's taxable income that exceeds the surtax threshold for a tax year will be subject to the 4% surtax; the threshold for Tax year 2026 is $1,107,750. — Massachusetts Department of Revenue, 4% Surtax on Taxable Income, https://www.mass.gov/info-details/massachusetts-4-surtax-on-taxable-income

Practitioner note

Ottawa retirees moving to Boston bring a federal pension and often an estate above Massachusetts's $2 million threshold. The pension is straightforward once NR301 is filed; the estate needs a plan. Massachusetts has no portability between spouses, so the first death can trigger tax that Ontario would never have charged.

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 pension withholding paperwork, and the first-year federal and Massachusetts returns. See cross-border pricing or book a call.