Ottawa to San Francisco: A Small Rate Gap and the RRSP Addback That Can Erase It

The Bay Area's technology companies, its policy and research institutions, and its defence-technology firms recruit Ottawa's engineers, policy professionals, and cybersecurity staff. The move is a small rate cut: Ontario's combined top rate of about 53.5% becomes about 50.3% in California. What changes is the RRSP, which California taxes annually, and the Ontario surtax and OHIP, which end on departure.

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.
• California's combined top rate is about 50.3%; capital gains at ordinary rates.
• California does not follow the treaty on RRSPs.
• A Canadian public service pension paid to a California resident is taxed federally with Canadian withholding capped at 15% under the treaty, and by California at ordinary rates.
• 13% HST becomes 8.625% sales tax in San Francisco. 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

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. California taxes the pension at ordinary rates with no credit for the Canadian withholding. CPP and OAS are taxable only in the US.

San Francisco's side

Graduated California state rates to 12.3% plus a 1% surcharge above $1 million, for a combined federal and state top rate near 50.3%; capital gains taxed as ordinary income; 8.625% sales tax in San Francisco, 9.125% to 9.375% on the Peninsula and in the South Bay; Proposition 13 property tax at about 1.1% of purchase price with a 2% annual cap; no estate tax; aggressive residency audits; community property.

The RRSP in California

Federally deferred under Article XVIII of the treaty. California does not conform: the Franchise Tax Board taxes the interest, dividends, and realized gains inside the account each year. Before departure, restructure toward growth assets that produce little annual income, draw the account down while still a Canadian resident, or accept the annual inclusion and track California basis.

RSUs and California sourcing

RSUs granted in Canada that vest after the move are split between Canada and the US by working days over the vesting period, and California sources its share by California working days as well. Both payrolls may withhold on the full amount. Because California taxes the gain on a later sale at ordinary rates, the decision to hold or sell vested shares is a California decision as much as a federal one.

Who makes this move

Ottawa software engineers and cybersecurity staff to the Bay Area's technology companies, CSE and DND alumni to the Bay Area's defence-technology firms, federal policy professionals to Stanford, Berkeley, and the region's think tanks, and Ottawa health scientists to the Bay Area's biotech cluster.

Worked example

An Ottawa cybersecurity engineer moves to San Francisco on August 31 with $160,000 of unrealized gain in a non-registered account, $450,000 in an RRSP producing about $13,000 a year of income, RSUs vesting after the move, and a Kanata home sold in the departure year.

• Departure tax. $160,000 gain, $80,000 taxable, at about 53.5%: roughly $43,000. Cheaper than California's ordinary-rate treatment later.
• RRSP. Federally deferred. California taxes the $13,000 annual income; restructuring reduces it.
• RSUs. Split by working days between Canada, US federal, and California.
• Home. Sold as a resident under the principal residence exemption.
• San Francisco. Combined top rate about 50.3%. HST 13% becomes sales tax 8.625%.

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

California does not conform to federal tax treaty provisions; income excluded from federal income under a treaty may be taxable by California. — California Franchise Tax Board, Publication 1031, Guidelines for Determining Resident Status, https://www.ftb.ca.gov/forms/2025/2025-1031-publication.pdf

Practitioner note

Ottawa-to-Bay Area files have the smallest rate gap on the map, and the RRSP addback can erase it entirely for a client with a large account and a few years in California. The restructuring has to be done before the departure date.

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 RRSP restructuring, and the first-year federal and California returns for Bay Area clients. See cross-border pricing or book a call.