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Straight answers, written by the people who’d file it.

1,407 plain-English guides on cross-border moves, US and Canadian returns, and small-business money. Each one ends in what to do next, and says when a written Position Check is the smarter first step.

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1,407 guides

Cross-Border Tax (U.S.–Canada)

Montreal to Boston: Biotech, the TP-1, and Massachusetts's Flat 5%

September 4, 2026

Quebec's combined top rate near 53.3% drops to Massachusetts's flat 5% (9% above the surtax threshold). The real work is the three-authority departure year and the RRSP, not the rate.

Cross-Border Tax (U.S.–Canada)

Montreal to Los Angeles: VFX, the Entertainment Corridor, and Three Tax Authorities on Departure

September 4, 2026

Quebec's top rate is near 53.3%, California's near 50.3%. The real work is the RRSP addback, the LA Business Tax, and three tax authorities on departure.

Cross-Border Tax (U.S.–Canada)

Montreal to New York: The TP-1, Three Tax Authorities, and Two More on Arrival

September 4, 2026

Montreal's combined rate near 53.3% and New York City's near 51% land surprisingly close to each other. The real complexity is the three-authority departure year and what each side does with your RRSP.

Cross-Border Tax (U.S.–Canada)

Montreal to San Diego: Biotech, Defence Pay, and Three Authorities on Departure

September 4, 2026

Quebec's combined top rate runs near 53.3%, California's near 50.3%, so this isn't a dramatic tax drop. The real story is the RRSP addback, the three-authority departure, and the Torrey Pines and defence employers pulling Montreal talent south.

Cross-Border Tax (U.S.–Canada)

Montreal to San Francisco: AI, the RRSP, and the Three-Authority Departure

September 4, 2026

Quebec's combined top rate is near 53.3%, California's near 50.3%. The real work is the RRSP addback, RSU sourcing, and three tax authorities on departure.

Cross-Border Tax (U.S.–Canada)

Moving from Canada to California: The RRSP Problem, the 13.3% Rate, and What the Treaty Doesn't Cover

September 4, 2026

California does not follow the Canada-US treaty on RRSPs. It taxes the growth every year you are a resident, and its 13.3% top rate stacks on federal tax. Here is the full picture for a Canada-to-California move, and what to do about the RRSP before you cross.

Cross-Border Tax (U.S.–Canada)

Moving from Canada to Florida: What Actually Changes on Your Taxes

September 4, 2026

Florida has no state income tax, but the real cost of a Canada-to-Florida move lands on the Canadian side. Departure tax, RRSP treatment, the substantial presence test, and the homestead timeline, in order.

Cross-Border Tax (U.S.–Canada)

Moving from the US to Alberta: What Changes on Your Taxes, and What Follows You

September 4, 2026

Alberta has Canada's lowest top provincial rate and no sales tax beyond the 5% GST, but a US citizen moving to Calgary or Edmonton still files two returns every year. Here is the Alberta-specific picture: arrival, health coverage, the RRSP, and the accounts that cause trouble.

Cross-Border Tax (U.S.–Canada)

Ontario to California: Closer Rates Than You Think, and What Happens to the RRSP and OHIP

September 4, 2026

Ontario's combined top rate (about 53.5%) and California's (about 50.3%) land closer together than most movers expect. The real gap is the RRSP, OHIP, and the surtax you leave behind.

Cross-Border Tax (U.S.–Canada)

Ontario to New York: The Surtax Swap, Wall Street, and What Each Side Does With Your RRSP

September 4, 2026

Ontario's surtax-augmented top rate and New York City's layered income tax land surprisingly close to each other. The real differences are in what each side does with your RRSP, your estate, and the departure year.

Cross-Border Tax (U.S.–Canada)

Ottawa to Austin: Defence Tech, the RRSP, and One of the Largest Rate Drops on the Map

September 4, 2026

Ontario's combined top rate near 53.5% drops to zero state income tax in Texas. Ottawa's DND cybersecurity and federal policy pipelines feed Austin's defence-tech and gov-tech scene.

Cross-Border Tax (U.S.–Canada)

Ottawa to Los Angeles: Aerospace, Defence, and California's Annual RRSP Inclusion

September 4, 2026

Ontario's top rate runs near 53.5%, California's near 50.3%. Ottawa's defence, aerospace, and policy pipelines feed Los Angeles, but the RRSP addback is the real cost.

Cross-Border Tax (U.S.–Canada)

Ottawa to San Antonio: The JBSA Corridor, the Ontario Surtax, and Zero State Income Tax

September 4, 2026

Ottawa's DND and CSE cybersecurity workforce feeds directly into Joint Base San Antonio's information warfare mission. Here is what happens to the Ontario surtax, the RRSP, and OHIP.

Cross-Border Tax (U.S.–Canada)

Ottawa to San Diego: The Defence Corridor, the RRSP, and California's Annual Inclusion

September 4, 2026

Ontario's combined top rate runs near 53.5%. California's lands closer to 50.3%, a modest drop. The real issue is California's annual RRSP addback and the naval and unmanned-systems employers pulling Ottawa's DND and CSE talent to the coast.

Cross-Border Tax (U.S.–Canada)

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

September 4, 2026

Ontario's top rate runs near 53.5%, California's near 50.3%, one of the map's smallest gaps. The RRSP addback can erase what's left of it.

Cross-Border Tax (U.S.–Canada)

Quebec to California: The RRSP Gets Hit From Both Sides

September 4, 2026

Quebec and California are both high-tax jurisdictions, and the RRSP gets hit from both sides: Quebec's departure year on the way out and California's annual inclusion on the way in. Here is what that corridor actually looks like.

Cross-Border Tax (U.S.–Canada)

Toronto to Austin: The Tech Corridor, the RRSP, and Zero State Income Tax

September 4, 2026

Toronto's combined top rate near 53.5% drops to zero income tax, state or city, in Austin. The rate drop is identical to Dallas; the traffic behind it is Toronto tech talent chasing Austin's employers and startup scene.

Cross-Border Tax (U.S.–Canada)

Toronto to Los Angeles: The RRSP Addback and the Entertainment Corridor

September 4, 2026

Toronto's combined top rate near 53.5% and California's near 50.3% sit close to each other. The real difference is that California taxes your RRSP growth every year, and LA's entertainment industry runs on freelance income that the city taxes from the first dollar.

Cross-Border Tax (U.S.–Canada)

Toronto to Salt Lake City: Silicon Slopes, the Mountain Corridor, and Utah's Flat Tax

September 4, 2026

Ontario's combined top rate near 53.5% drops to Utah's flat rate. Salt Lake City's tech and finance corridor pulls from Bay Street and the GTA, and the RRSP deferral carries through cleanly.

Cross-Border Tax (U.S.–Canada)

Toronto to San Antonio: USAA, Military Tech, and Zero State Income Tax

September 4, 2026

Toronto to San Antonio tax guide covering the 53.5% to 0% state rate drop, RRSP treatment, departure tax, and the USAA and JBSA job corridor.

Cross-Border Tax (U.S.–Canada)

Toronto to San Diego: Biotech Pay, the RRSP, and California's Annual Inclusion

September 4, 2026

Ontario's combined top rate runs near 53.5% against California's near 50.3%, so this isn't the dramatic cut you'd see moving to Texas or Florida. The real story is Prop 13, the RRSP addback, and the Torrey Pines biotech and defence employers pulling Toronto talent south.

Cross-Border Tax (U.S.–Canada)

Toronto to San Francisco: RRSPs, RSUs, and a Lateral Move on Tax

September 4, 2026

Toronto's combined top rate near 53.5% and California's near 50.3% land close together, so this is a lateral move, not a tax cut. The real traps are the RRSP addback and how California sources RSU grants that started in Toronto.

Cross-Border Tax (U.S.–Canada)

Vancouver to Los Angeles: VFX, the Entertainment Corridor, and a Lateral Move on Tax

September 4, 2026

Vancouver's combined top rate near 53.5% and California's near 50.3% land close together, a lateral move, not a cut. The RRSP still gets taxed every year, and LA's gross-receipts business tax hits entertainment freelancers from the first dollar.

Cross-Border Tax (U.S.–Canada)

Vancouver to New York: Hollywood North Meets Wall Street, and Two High-Tax Jurisdictions

September 4, 2026

BC's combined top rate runs near 53.5%. New York's tops out close behind once NYC's own tax stacks on top of the state's. The real difference is what each side does with your RRSP and your estate.

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