Do US citizens living in Canada have to file US taxes every year?

Why living in Canada does not end your US filing duty

The United States is one of the very few countries that taxes people on citizenship rather than residence. A US citizen who has lived in Brampton for thirty years, earns every dollar in Canada, and pays full Canadian tax is still required to report that same income to the IRS on Form 1040. Green-card holders who have never formally surrendered their status are in the same position.

The obligation starts once your gross worldwide income passes the filing threshold for your status, which for most people equals the standard deduction. Two thresholds catch Canadians off guard. If you are married to a non-US spouse and file as married filing separately, the threshold is only US$5, so almost everyone in that position must file. If you are self-employed, net earnings of just US$400 trigger a return regardless of anything else.

"Accidental Americans" - people born in the US who left as infants, or born in Canada to a US parent - carry the same duty as everyone else. Not knowing you had to file can be a defence against penalties; it is never a defence against the requirement itself. Our dual citizen tax guide starts from that first realization and works forward.

What a complete US filing from Canada includes

A Form 1040 is rarely the whole package. Depending on what you own, the annual filing from Canada bundles several information returns, and each one carries its own penalty regime:

• Form 1040 with the usual schedules, reporting Canadian employment, business, investment, and rental income converted to US dollars.
• Form 1116 to claim the foreign tax credit for Canadian tax paid, or Form 2555 if you exclude earned income instead.
• FBAR (FinCEN Form 114) when the combined maximum value of your non-US accounts - chequing, savings, RRSP, TFSA, RESP, brokerage - exceeds US$10,000 at any point in the year. It goes to the Treasury, not in with the 1040. Our FBAR guide lists what counts.
• Form 8938 under FATCA when specified foreign financial assets exceed the thresholds for people living abroad: more than US$200,000 at year-end or US$300,000 at any time for a single filer, and double those amounts on a joint return.
• Form 8621 for each Canadian mutual fund or ETF held outside an RRSP, because those funds are passive foreign investment companies (PFICs).
• Forms 3520 and 3520-A where a Canadian account is treated as a foreign trust - historically a live question for TFSAs and RESPs. Our TFSA answer explains where that debate stands.
• Form 8833 when you rely on a treaty position that has to be disclosed.

Why most people owe nothing and still have to file

Canadian income tax rates exceed US rates at almost every income level, and the foreign tax credit offsets US tax dollar-for-dollar with Canadian tax already paid on the same income. For a salaried employee with ordinary investments, the credit normally erases the entire US liability and leaves excess credits to carry forward for up to ten years. The exclusion-versus-credit choice deserves attention, but either route usually ends at zero.

A zero balance does not make the return optional, and it does not shield you from the penalties that actually bite. The failure-to-file penalty on a 1040 is a percentage of unpaid tax, so it is often nil. The penalties for a missing FBAR, Form 8938, Form 3520, or Form 8621 are set without reference to tax owing, and they are the reason a US citizen in Canada cannot skip a year that "would have been zero anyway". A missing Form 8621 also holds the statute of limitations open on the whole return.

Some Canadian situations do produce real US tax after credits: growth inside a TFSA (no Canadian tax means no credit), PFIC income under the default rules, a principal residence sold at a gain above the US home-sale exclusion, and certain RESP and private-corporation arrangements. These are the files where planning changes the number.

Which deadlines apply, and what to do about missed years

US citizens whose tax home is outside the United States get an automatic two-month extension, moving the 1040 due date from April 15 to June 15. You attach a short statement to the return saying you qualify. A further extension to October 15 is available by filing Form 4868 before June 15. Interest on any balance owing still runs from April 15, so the extension buys filing time rather than payment time.

The FBAR is due April 15 with an automatic extension to October 15 that needs no request, and Form 8938 travels with the 1040 and shares its deadline.

If you have never filed from Canada, the IRS built a specific route for you. The Streamlined Foreign Offshore Procedures let a non-willful filer living abroad submit three years of returns and six years of FBARs with a signed certification, and pay no failure-to-file, failure-to-pay, or information-return penalties. Most long-term Canadian residents qualify. The mechanics are in our streamlined filing guide and in the answer on who qualifies.

What we advise against is filing only the current year and hoping the past stays quiet, or filing old returns outside a procedure - both leave every penalty on the table with none of the protection.

How we prepare US returns for citizens living in Canada

We prepare the T1 and the 1040 in the same engagement, so the exchange rates, the foreign tax credits, and the account balances agree in both directions. The work starts with a discovery call to list what you hold - every account, fund, and plan - because the information returns, not the tax, are where mistakes get expensive. From there we quote a fixed fee for the full package and, where years are missing, we scope a streamlined submission before anything else. Our US tax preparation page describes the service in detail.

Source: IRS - US Citizens and Resident Aliens Abroad.