US-Canada income tax treaty: benefits, exempt income, and saving clause

The Canada-US income tax treaty exists to keep the same dollar from being taxed twice when you live, work, invest, or retire across the border. It sets primary taxing rights between the two countries, caps source-country withholding on cross-border dividends and interest, and gives clear tie-breaker rules when both countries want to call you a tax resident.

If you are a US citizen or green card holder in Canada, a Canadian resident with US-source income, or a cross-border commuter, this treaty shapes what you owe, where you owe it, and which forms you file.

The three biggest benefits: double-tax relief through foreign tax credits and exemptions, residency tie-breakers under Article IV, and reduced withholding on cross-border investment income.

What this guide covers:

• Who the treaty applies to and how residency is resolved
• The articles that matter most: employment, pensions, retirement accounts, capital gains, business profits, dividends, interest, royalties
• Capital gains and withholding rate reductions under the treaty
• Filing forms, deadlines, and the saving clause you cannot fully escape

This article is brought to you by Taxes for Expats (TFX). We handle cross-border US-Canada filings every day for expats, dual citizens, retirees, and Canadian residents with US income.

For side-by-side rate comparisons, see our Canadian vs American taxes breakdown, and for the full mechanics of filing from Canada, see our guide to US tax preparation in Canada.

Background of the US-Canada tax treaty

The Canada and US income tax treaty was first signed in 1980 and has been modified by five protocols, most recently in 2007. Formally titled the Canada-US income tax convention, it is the working framework the IRS and the Canada Revenue Agency (CRA) use to resolve cross-border tax questions today.

The treaty was needed because the two countries tax people on fundamentally different bases. The US taxes citizens and green card holders on worldwide income, regardless of where they live. Canada taxes people based on residency. Without a coordination framework, the same income would fall into both systems.

Key milestones:

• 1980: Original Canada-United States tax treaty signed
• 1983, 1984, 1995, 1997, 2007: Protocols added
• 2007 Fifth Protocol: Introduced mandatory arbitration procedures, updated withholding rules, and addressed hybrid entity treatment

How the US taxes citizens vs how Canada taxes residents

The mismatch between the two systems is why coordination matters.

 

TFX also has a full write-up of citizenship-based taxation if you want the background on why US citizens abroad continue to have US filing obligations even after decades outside the country.

Without a treaty framework, a US citizen in Toronto could pay Canadian tax on employment income under Canadian residency rules and full US tax on the same dollars under US citizenship rules.

This Canada-US tax agreement provides the credit and exemption mechanisms that stop most of that overlap – but does not eliminate the requirement to file in both countries.

Who does the US-Canada tax treaty apply to?

The Canada and US tax treaty applies to residents of one or both contracting states. Simply earning income in both countries does not automatically make you a dual resident.

The Canada-US tax treaty for individuals typically covers:

• US citizens or green card holders living in Canada
• Canadian residents with US-source income (wages, rental income, dividends, interest, royalties)
• Dual residents under each country’s domestic law
• Cross-border commuters – for example, a Windsor resident working in Detroit
• Retirees receiving pensions, US Social Security, CPP, or OAS across the border
• Dual-status aliens in the year of arrival to or departure from the US

For dual-status aliens (taxed as a US resident for part of the year and a nonresident for the other part), the treaty can still affect the analysis, but the tie-breaker rules in Article IV must be applied carefully. Dual status is a US domestic-law concept; treaty residency is a separate question.

 

Being a US citizen and a Canadian resident is a common profile in the Canada and US taxes conversation, and it is where TFX spends most of its cross-border time.

See our guide to US-Canada dual citizenship taxes for the mechanics of filing in both systems. The IRS keeps a general overview of active US tax treaties.

Example: dual residency

When both countries claim you as a tax resident, Article IV sequentially applies four tests to decide which country has primary taxing rights: permanent home, center of vital interests, habitual abode, and nationality.

You work through them in order. As soon as one test gives a clear answer, you stop.

1. Permanent home – In which country do you have a home available at all times? If you have a home in both, or in neither, move to the next test.
2. Center of vital interests – Where are your personal and economic ties strongest? Family, employment, banking, professional and civic affiliations.
3. Habitual abode – Where do you spend most of your time?
4. Nationality – Nationality is the fourth tie-breaker. If that still does not resolve residency – for example, if the individual holds nationality in both countries or neither country – the IRS and CRA determine treaty residence through the Mutual Agreement Procedure (MAP).

TFX client scenario: A US citizen moved from Chicago to Toronto in July 2025. She kept her Illinois home and rented it out. She opened a Canadian bank account, took a full-time job with a Toronto employer, and spends roughly 8 months a year in Canada. Her spouse and children moved with her.

Applying Article IV: she has a permanent home in both countries (the rented US home is arguably not “available at all times”). Center of vital interests clearly resolves to Canada – family, employment, primary banking, daily life. Test 2 resolves it. She is a Canadian treaty resident starting mid-2025.

That is the residency answer. It is not the whole US answer. If she is a US citizen, she continues filing Form 1040 on worldwide income and generally relies on foreign tax credits. Green card holders claiming treaty nonresidence follow different filing rules, including Form 8833. The treaty shifts primary taxing rights; it does not remove US citizenship-based filing.

What to document if you are working an Article IV position:

• Deed or lease and utility bills for each residence
• Employment contract or self-employment records
• Bank and brokerage account addresses
• Day-count log (calendar with days in each country)
• Family location (spouse, dependents, immediate family)
• Provincial or state driver’s license and vehicle registration

If you moved mid-year and need to file both a US return and a Canadian return for the same year, our dual-status alien filing guide walks through the sequencing.

US or Canadian resident with income on both sides? We handle the full return.

Get help with expat returns

Key provisions of the US-Canada tax treaty

Most Canada-US tax treaty benefits for individuals sit in a small number of articles. If you know which article covers your income, you can find the rule quickly.

Here are the Canada-US tax treaty article numbers most cross-border filers rely on:

 

Not every US and Canada treaty article eliminates tax. Some only reduce withholding. Some only assign primary taxing rights, while the other country still applies its own tax and issues a credit. The saving clause in Article XXIX preserves US taxing rights over its citizens, subject to a short list of exceptions.

For a broader look at how tax treaties work across countries, see our guide to US tax treaties.

Employment income (Article XV)

Employment income is generally taxable in the country where the work is physically performed. Article XV lets that income stay taxable only in the residence country when three conditions are all met in the work country during the relevant 12-month period.

The three conditions:

1. The employee is present in the work country for 183 days or fewer during any 12-month period beginning or ending in the tax year.
2. Remuneration is paid by, or on behalf of, an employer who is not a resident of the work country.
3. Remuneration is not borne by a permanent establishment (PE) of the employer in the work country.

All three must be met. Miss one and the work country can tax the income.

 

Article XV covers employment income – salaries, wages, and similar remuneration. It does not cover independent contractors.

Contractors fall under Article VII business profits and follow the permanent establishment rules instead. Getting this wrong is a common source of surprise assessments from the country the contractor thought they had opted out of.

TFX client scenario

A US citizen consultant works for 4 months in Toronto for a US company with no Canadian office or PE, paid from the US payroll. She stays 118 days in Canada. Employment income is taxable only in the US if all Article XV conditions are met. She still files Form 1040 in the US. Depending on the facts, a Canadian tax return may still be required to report the income or claim treaty relief, even if no Canadian tax is ultimately owed.

For remote workers, working abroad for a US company has the wider filing framework. Contractors specifically should see if overseas contractors pay taxes.

Pensions and annuities (Article XVIII)

Private pensions, government pensions, and social security are treated differently under Article XVIII. The most common misreading of the article confuses the 85% inclusion rate for US Social Security with an 85% tax rate. They are not the same.

Here is what Article XVIII does for individuals:

• Private periodic pension payments can be taxed in both countries, but the source country’s tax is generally capped at 15% of the gross payment
• Lump-sum pension payments may not qualify for the 15% cap – they are often taxable in full in the source country
• US Social Security paid to a Canadian resident is generally taxable only in Canada under Article XVIII(5), with only 85% of the benefit included in taxable income under the treaty, subject to Canadian domestic tax rules
• CPP and OAS benefits paid to a US resident are generally taxable only in the US under Article XVIII(5), subject to the taxpayer’s circumstances
• Government-service pensions (a pension paid by a government for services rendered to it) are generally taxable only by the paying country, with an exception for residents who are also citizens of the other country

 

Documents to review before filing: SSA-1042S, NR4, T4A(P), T4A(OAS), and Form 1099-R for US pension distributions.

 

For more, see our guides to retiring in Canada as an American and foreign pension income taxability in the US.

Retirement accounts: RRSP, TFSA, 401(k)

Registered retirement accounts in Canada and the US are not treated identically by the other side. The treaty solves some of the mismatch, but not all of it.

Here is the summary before we split it out:

 

RRSPs and RRIFs get automatic US deferral treatment. TFSAs do not. 401(k)s and IRAs continue to defer under Canadian rules until distribution.

RRSP (Registered Retirement Savings Plan)

For US taxpayers with a Canadian RRSP or RRIF, undistributed income inside the account is generally deferred for US purposes under Article XVIII(7) and IRS Rev. Proc. 2014-55. Distributions become taxable when received, and the source country’s tax on periodic pension payments is capped at 15%.

Key mechanics:

• US deferral is automatic under Rev. Proc. 2014-55. You no longer need to file Form 8891 each year.
• FBAR (FinCEN Form 114) and Form 8938 reporting still apply based on the value of the account, if you cross those thresholds.
• On distribution, the amount is generally taxable in the US to the extent it exceeds your US cost basis. A foreign tax credit for Canadian withholding is claimed on Form 1116.

TFX client scenario

A US citizen resident in Canada contributes C$15,000 to her RRSP in 2025. The Canadian side gives her a deduction against Canadian income. On her US return, the contribution is not deductible (RRSP contributions do not reduce US taxable income in most cases), but the growth inside the account is not taxed until distribution. She reports the account balance on FBAR because her total foreign account balance exceeds $10,000 at any point in the year.

Full mechanics are in our Canadian RRSP and US taxes guide.

TFSA (Tax-Free Savings Account)

The TFSA is tax-free under Canadian law. It is not exempt from US tax. Income and gains earned inside the account – including interest, dividends, and capital gains – are taxable on Form 1040 each year that a US person holds the account.

The reporting picture:

• Annual reporting of income and gains earned inside the account on Form 1040
• FBAR and Form 8938 based on account thresholds
• A TFSA is generally not tax-free for US tax purposes. Forms 3520/3520-A may be relevant depending on the account’s legal structure, though the IRS has not issued definitive guidance for ordinary TFSAs. Form 8621 may apply to any PFIC holdings in the account.

Contributor checklist:

• Track dividends, interest, and capital gains each year – the T-slips will not always reach you if your address is US
• Save annual brokerage statements
• Check PFIC status of each fund holding
• Consider whether to close or restructure the account if you know a permanent US move is coming

TFX client scenario

A US citizen resident in Vancouver holds a C$40,000 TFSA invested in three Canadian equity ETFs. Canada owes nothing on the account. The US taxes the annual dividends and any capital gains, and each of the three ETFs likely triggers a Form 8621 filing under the PFIC rules. The treaty does not extend to TFSAs.

For the full picture, see our TFSA tax implications for US expats guide, and our overview of PFIC taxes and Form 8621.

Canadian mutual funds or ETFs in your TFSA? We prepare each Form 8621.

Learn more

401(k) and US retirement accounts

Canada respects the deferred status of US 401(k) and IRA accounts under the treaty. Growth inside the account is not taxed by Canada while you are a Canadian resident. Distributions are taxable in Canada when received.

 

Watch-out items:

• The 10% US early-withdrawal penalty is not creditable in Canada
• Currency conversion changes the reported Canadian income even if the USD amount is unchanged
• A one-time Canadian election is available for Roth IRA to preserve the tax-free character on the Canadian side. Miss the filing, and Canada may tax future Roth growth.
• State income tax on IRA distributions can still apply if you kept a US state domicile

For more, see Roth IRA in Canada and what happens to my 401(k) when I move abroad.

Key takeaway

Three points to remember on cross-border retirement accounts:

• Treaty deferral protects RRSP/RRIF growth but not TFSA growth
• US 401(k) and IRA deferral is respected by Canada until distribution
• Treaty relief is not the same as full exemption – reporting obligations on FBAR, Form 8938, and Form 8621 often remain, and Forms 3520/3520-A may warrant analysis depending on the account’s legal structure, though the IRS has not issued definitive guidance for ordinary TFSAs

Residency tie-breakers (Article IV)

When both countries claim you as a resident under their own domestic rules, Article IV assigns primary taxing rights to one country by working through the same four factors already covered above. The full sequence is more visible in table form.

 

Two important cautions on Article IV:

• Tie-breakers do not erase US citizenship-based tax exposure. A US citizen who becomes a Canadian treaty resident still files Form 1040 on worldwide income and uses foreign tax credits. Green card holders who claim treaty nonresidence follow different filing rules, including disclosure on Form 8833.
• Canadian-source income can still be taxed by Canada under source rules even after a tie-breaker decides you are a US resident. Real property income, business profits from a Canadian PE, and CPP paid to you are common examples.

Two short scenarios:

• A US citizen moved from NYC to Vancouver in March. She rents out her US home, moved with her spouse and two children, and works for a Canadian employer. Article IV resolves at test 2 – she is a Canadian treaty resident.
• A Canadian moved from Toronto to Boston in March. Before the move, he earned Canadian-source self-employment income. After the move, he took a US job. Canadian-source income earned before the move is taxable in Canada. US-source income after the move is taxable in the US.

Business profits (Article VII)

Business profits are taxable only in the country of residence unless the business operates through a permanent establishment (PE) in the other country. If a PE exists, the profits attributable to that PE are taxable there.

A permanent establishment (PE) generally means a fixed place of business – such as an office, branch, warehouse, or factory – but the treaty also contains special rules for certain agents and service activities. It also includes dependent-agent PE (someone with authority to conclude contracts on the business’s behalf).

A permanent establishment can also arise under the treaty’s service permanent establishment rules in Article V(9). Those rules contain separate tests based on the nature of the services provided and the applicable time thresholds, so the analysis depends on the specific facts.

 

PE evidence to keep on file:

• Lease or ownership records for any space used
• Employee locations and job descriptions
• Contracts showing who has signing authority and where
• Project duration and location logs
• Equipment location

Article VII is not a blanket shield. Service PEs and dependent-agent PEs can create source-country tax even without a traditional physical office.

For entity-level reporting, see our guides to Form 1120-F and foreign company tax reporting.

Capital gains under the US-Canada tax treaty

Capital gains are generally taxable in the country of residence. US citizens remain subject to US tax under the saving clause, with foreign tax credits relieving double taxation.

The main exception is real property: gains on real property (and interests in entities that mostly hold real property) can be taxed in the country where the property is located, under Article XIII.

That gives you three practical categories:

• Real property – Taxable in the country where the property sits. A US-source gain for a Canadian resident, or a Canadian-source gain for a US resident.
• Shares of an entity whose value is derived principally from real property – Often taxable in the situs country under Article XIII(3). This catches sales of stock in companies whose value is derived principally from real property as defined in the treaty.
• Other capital gains – Most gains from publicly traded securities are taxable only in the country of residence, provided no treaty exception applies (such as gains attributable to a permanent establishment or interests deriving their value principally from real property).

Two short examples:

• A Canadian resident sells a Florida rental. The US taxes the gain, both under Article XIII and under FIRPTA withholding rules. Canada also taxes the gain because Canadian residents are taxed on worldwide income, but a foreign tax credit for the US tax paid reduces the Canadian bill.
• A US citizen resident in Toronto sells shares in her Canadian brokerage account. She generally reports the gain in both countries – Canada taxes it because she is a Canadian resident, and the US taxes it because of citizenship. Foreign tax credits and the treaty help prevent double taxation. If the shares are in a Canadian mutual fund treated as a PFIC, additional Form 8621 rules apply.

 

For the Canadian mechanics, see our guide to capital gains tax in Canada. For a broader look at Canada-US tax treaty capital gains rules, see our capital gains for expats overview.

Tax credits and exemptions

Three mechanisms under the income tax treaty between the US and Canada reduce double taxation: the foreign tax credit, treaty exemptions, and reduced source-country withholding. The right one depends on which country has primary taxing rights and what type of income is involved.

 

Confirm which country has primary taxing rights on each income item before claiming relief. Using the FTC when the income is actually treaty-exempt, or vice versa, is a common source of IRS notices.

Foreign tax credit (FTC)

The foreign tax credit (Form 1116 on the US side, T2209 on the Canadian side) offsets your US tax on foreign-source income by the amount of income tax you already paid to Canada on the same income. The credit is capped at the US tax that would apply to that same foreign-source income. Unused FTC can generally be carried back 1 year and forward 10 years.

Three steps to claim it correctly:

1. Identify foreign-source income by category (passive, general, etc.)
2. Collect Canadian tax slips – T4, T3, T5, NR4, and any statement of foreign tax paid
3. Prepare Form 1116 with foreign-exchange conversion to USD using the correct method

 

Timing and FX mismatches between the two systems can make the FTC look wrong on the first pass. Reconcile before filing.

TFX client scenario

A US citizen resident in Toronto earns C$120,000 in 2025 and pays roughly C$28,000 in Canadian tax. On her US return, Form 1116 (general category) lets her offset her US tax on the same USD-equivalent income by the Canadian tax paid, up to the US tax that would have applied. Any excess credit carries forward.

If you are choosing between FTC and FEIE, our FTC vs FEIE comparison walks through the decision. The general framework for the US credit lives on the IRS foreign tax credit page.

Real story: how we helped a US-Canadian expat recover $30,000 lost to double taxation

The problem. John (name changed) moved from Canada to the US and received a $30,000 IRS bill on his severance – despite paying full Canadian tax on the same amount. His prior preparer had left the foreign tax credit off his US return, so both countries taxed the same income.

The action. TFX reviewed his federal and state returns, added the FTC on Form 1116 for the Canadian tax paid, and filed amended returns. We also switched his filing status from Married Filing Separately to Married Filing Jointly, which changed the credit and rate math.

The result. Over $32,000 in total tax relief, including the $30,000 recovered on double-taxed severance and about $2,000 from the filing status change.

Mini timeline:

• Original US return filed by prior preparer – no FTC claimed
• Canadian tax paid in full on the same severance
• TFX review identified the missed credit
• Amended returns filed on Form 1040-X
• Refund and adjustment processed by the IRS

Three lessons:

• Confirm the FTC was claimed on all Canadian tax paid before signing the return
• Filing status is not just about brackets – it affects the credit calculation too
• Amended returns can recover overpaid tax within 3 years of the original filing (or 2 years of the tax paid, whichever is later)

Full case study: how we recovered $30,000 in double-taxed severance.

For a similar story on a different treaty, see unseen double-tax relief.

Income exemptions

Certain categories qualify as Canada-US tax treaty exempt income, meaning they are taxed by only one country. The list is shorter than most people expect, and it is worth distinguishing from situations where the treaty simply shifts primary taxing rights rather than removing them.

 

The Canada-US tax treaty exemption rules generally require you to file a return that discloses the position. Many treaty-based positions are exempt from Form 8833 reporting under the IRS regulations, while others require disclosure under IRC §6114.

This is one of the areas where the wrong form can trigger a notice even when the underlying position is correct. Always review the current Form 8833 instructions before relying on a treaty position.

Living in Canada as a US citizen or green card holder? See our full Canada guide.

Learn more

For the disclosure form itself, see our guide to Form 8833 treaty disclosure.

Lower withholding taxes

Without the treaty, US-source income paid to Canadian residents – dividends, interest, royalties – is subject to a default 30% US withholding. The treaty replaces that with reduced Canada-US tax treaty withholding rates, once the payer has the right form on file.

 

The same reductions apply in reverse for Canadian withholding on payments to US residents. This is where you also see the Canada-US dividend withholding tax at the 15% (or 5%) treaty rate come up on brokerage statements.

To claim the reduction, the payee gives the payer the right form before payment:

• W-8BEN – Canadian residents receiving US-source payments
• NR301 – US residents receiving Canadian-source payments

Withholding reductions do not remove the annual reporting obligation on the return. They just change how much tax the payer withholds at source. For the form side of this, see our overview of foreign withholding forms.

Dividends, interest, and royalties

Three treaty articles cover the passive income most cross-border investors care about: Article X (dividends), Article XI (interest), and Article XII (royalties). All three assign primary taxing rights to the residence country and cap what the source country can withhold.

 

Three examples:

• Dividends – US resident receiving Canadian shares. A US resident holds shares in a Canadian bank. Canada withholds at 15% under Article X on the dividend. The US resident reports the dividend on Form 1040 and claims a foreign tax credit on Form 1116 for the Canadian withholding.
• Interest – US resident receiving Canadian bond interest. Canada withholds 0% under Article XI once NR301 is on file. Full amount is taxable on the US return.
• Royalties – Canadian software developer receiving US royalties. A W-8BEN triggers 0% US withholding on copyright royalties. Industrial royalties, such as patent licenses, are generally exempt from source-country withholding (0%) under Article XII as amended by the Fifth Protocol, although the treaty’s definitions and characterization rules should be reviewed for particular payments.

Reduced source withholding is not the same as no tax. You still report the income in your residence country. Under the Canada-US tax treaty dividends provisions, the reduced withholding rate simply means less tax is collected at the source. Your residence country’s return still controls the final tax outcome.

For more on reporting, see our guides to taxation of foreign dividends and Form 1099-DIV.

Unique treaty benefits: gambling and charitable contributions

Two provisions in the Canada-US tax convention are unusual compared with the standard US treaty template: US gambling loss deduction for Canadian residents (Article XXII), and cross-border charitable contribution deductions (Article XXI).

Article XXIX is the saving clause and miscellaneous rules – it does not contain the gambling and charitable provisions. Older TFX content used the wrong article citation on this point.

Gambling winnings (Article XXII)

Canadian residents who receive US gambling winnings can offset those winnings by gambling losses on Form 1040-NR under Article XXII. This is an exception to the general rule that nonresident aliens cannot claim gambling losses.

The mechanics:

• File Form 1040-NR to report the US gambling winnings and claim the loss offset
• Keep documentation – casino win/loss statements, wagering tickets, W-2G copies, dated bank or card records
• The reduction is loss-against-winnings only; you cannot use gambling losses to reduce other US income

TFX client scenario. A Canadian resident wins US$8,000 at a Las Vegas casino during a March 2025 trip and loses US$5,000 the same trip. She files Form 1040-NR, attaches the casino win/loss statement, and reports net winnings of US$3,000 rather than the full US$8,000.

For the US side of gambling income, see our US tax on casino, lottery, and gambling winnings guide. Reporting mechanics for US gambling income are set out in IRS Topic 419.

Charitable contributions (Article XXI)

Article XXI may allow deductions for qualifying cross-border charitable gifts, subject to each country’s domestic deduction rules and generally limited by income arising in the other country.

 

Substantiation rules from each country still apply – the treaty relaxes the source-of-charity requirement, not the receipt-keeping rules. US-qualified charitable organizations are searchable on the IRS site, and Canadian registration is confirmed through CRA’s charity listing.

The saving clause, exit tax, and estate rules: what to know

Three advanced areas need attention beyond the day-to-day treaty benefits: the saving clause preserves most of the US taxing right over its citizens; the treaty provides a prorated unified credit for Canadian residents facing US estate tax on US-situs property; and the US exit tax under IRC §877A applies to covered expatriates regardless of treaty residence.

The three-part roadmap:

• Saving clause – Applies to US citizens and long-term green card holders
• Estate tax – Applies to Canadian residents holding US real property, US corporate stock, or other US-situs assets above the filing threshold
• Exit tax – Applies at renunciation or long-term green card abandonment for covered expatriates

Treaty language does not remove US filing or exit obligations for citizens and long-term green card holders. It reshapes some of the internal math, but not the reporting.

Planning to renounce US citizenship or abandon a green card? We handle exit tax and Form 8854.

Learn more

The saving clause

The saving clause in Article XXIX(2) lets the US tax its citizens and long-term green card holders as if the treaty had not entered into effect, subject to a specific list of exceptions in Article XXIX(3) and (5).

Common exceptions preserved for US citizens:

• Article XVIII(5) – Social Security payments across the border
• Article XXV – Non-discrimination
• Article XXVI – Mutual Agreement Procedure
• Article XXVI A – Assistance in collection
• Certain relief provisions for correlative adjustments

The saving clause does not fully override treaty benefits. It preserves US taxing rights, and then the listed exceptions carve out treaty protections that US citizens can still use. Full guide: our overview of why US citizens living abroad still pay US taxes.

Estate tax on US assets

Under US domestic law, a nonresident’s estate generally must file Form 706-NA if US-situs assets exceed $60,000. The Canada–US treaty may substantially reduce or eliminate the resulting estate tax through its prorated unified credit, based on the ratio of US-situs to worldwide assets.

 

TFX client scenario

A Canadian resident owns US$2.5M in a US brokerage account (US public company shares) and a US$1M Florida rental. At death, her worldwide estate is US$8M. The gross US estate is US$3.5M. Form 706-NA is required. The treaty gives her a prorated unified credit calculated on the US-situs to worldwide asset ratio, and that credit is then applied against the US estate tax otherwise owed.

Income tax treaty rules and estate tax treaty rules are separate. Do not assume that income-tax residency answers the estate-tax question.

For a closer look at US filing requirements, see our guides to federal estate tax for foreign investors in the US and estate taxes for expatriates.

US exit tax and the tax treaty

The US exit tax under IRC §877A applies to covered expatriates – US citizens who renounce and long-term green card holders (8 of the last 15 years) who abandon status. The treaty does not remove that liability. It can affect how certain deferred items – pensions, deferred compensation, specified tax-deferred accounts – are treated after expatriation.

Covered-expatriate triggers (any one):

• Average annual net US income tax over the prior 5 years exceeds an inflation-adjusted threshold that depends on the year of expatriation (check the current Form 8854 instructions for the applicable amount)
• Net worth of US$2 million or more on the expatriation date
• Failure to certify 5 years of US tax compliance on Form 8854

Pre-renunciation checklist:

• Run the covered-expatriate tests before you set a consulate date
• File Form 8854 in the year of expatriation
• Understand which deferred items are subject to the mark-to-market tax, and which fall under separate rules
• Keep US-source income reporting in place after expatriation if applicable

Filing requirements and forms

Filing a US-Canada tax position often requires more than one form. Which combination depends on whether you are claiming a credit, reducing withholding, or taking a treaty-based return position that has to be disclosed under IRC §6114.

 

Form 8833 is not required for every treaty benefit. Common positions that do not require Form 8833 disclosure include the 15% dividend rate under Article X for portfolio investors and standard FTC claims.

Common positions that do require disclosure include waivers of the saving clause and non-discrimination positions. Instructions for Form 8833 and Form W-8BEN are worth checking before filing.

TFX’s Streamlined Filing Procedure can bring you back into compliance, penalty-free.

Learn more

For the full form roster, see our expat IRS tax form checklist.

When to file US and Canadian tax returns

Filing taxes in US and Canada on time means tracking two sets of deadlines. Any US tax owed is still due by April 15 even if you get the automatic 2-month filing extension for taxpayers abroad.

 

Pre-filing checklist:

• Last year’s US and Canadian returns
• T4, T4A, T3, T5, NR4 slips as applicable
• US W-2s, 1099s, brokerage statements
• Foreign account statements for FBAR / Form 8938
• FX rate documentation for the tax year

Filing deadlines vary by country, so check the foreign tax filing deadlines for your specific due date. If you need more time, you can also request a filing tax extension.

Claim the treaty benefits with Taxes for Expats

If US-Canada tax filing is on your desk this year, TFX handles it end to end. Cross-border US-Canada work is a repeat specialty for our CPAs, not a side offering.

When you contact us, you get:

• Review of the correct treaty positions for your situation – residency, income type, article
• Preparation of Form 1116, Form 8833, W-8BEN, NR301, and any required elections
• Coordination of RRSP, TFSA, or 401(k) reporting alongside FBAR and Form 8938

Canadian tax on US income and US tax on Canadian income both need to be reconciled on the same set of returns. That is what we do.

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