Imagine paying over $80,000 in provincial and federal taxes to the Canada Revenue Agency (CRA), only to be told by the IRS that you can only deduct a mere $10,000 of that on your US tax return. For thousands of American expats living in high-tax provinces like Ontario, British Columbia, and Quebec, this has been the frustrating reality since 2018. The State and Local Tax (SALT) cap, a cornerstone of the Tax Cuts and Jobs Act (TCJA) of 2017, effectively handcuffed high-earning expats, forcing them into complex credit calculations that often left money on the table. However, the horizon is shifting. As we approach the 2025 sunset of these provisions, our team at Zenith Financial Advisors is preparing clients for a monumental shift: the return of the unlimited foreign tax deduction on 2026 US tax returns. This change represents one of the most significant tax planning opportunities for cross-border professionals in a decade.
Key Takeaways:- The $10,000 SALT cap is scheduled to expire on December 31, 2025, allowing for full deduction of foreign taxes on Schedule A starting in 2026.
- Expats in Ontario (53.53% top marginal rate) stand to benefit significantly more from itemized deductions than the current capped system allows.
- Choosing between the Foreign Tax Credit (Form 1116) and the Foreign Tax Deduction (Schedule A) will require a new mathematical analysis starting in the 2026 tax year.
- Strategic income deferral from 2025 to 2026 could result in six-figure tax savings for high-net-worth cross-border households.
- Compliance remains critical; FBAR (FinCEN Form 114) and Form 8938 requirements are unaffected by the SALT cap expiration.
The Sunset of the TCJA and the Rebirth of Itemized Deductions
The Tax Cuts and Jobs Act (TCJA) of 2017 fundamentally altered the landscape for US citizens abroad. By placing a $10,000 limit on the deduction of state and local taxes (which include foreign income taxes paid to countries like Canada), the IRS essentially neutralized a powerful tool for expats. For a professional in Toronto earning $300,000 CAD, their provincial tax liability alone far exceeds the $10,000 threshold. Under current law, anything paid above that cap is effectively "lost" if the taxpayer chooses to itemize deductions rather than take a credit.
According to the Tax Foundation, the SALT cap was designed to broaden the tax base and offset lower corporate rates, but it disproportionately impacted taxpayers in high-tax jurisdictions. For expats, this meant the Foreign Tax Credit (FTC) became the default, and often only, viable path. However, as the TCJA provisions are set to sunset at the end of 2025, Section 164(b)(6) of the Internal Revenue Code—the provision that limits these deductions—will disappear unless Congress intervenes.
Per IRS Publication 17, taxpayers have historically had the choice to deduct foreign taxes paid on Schedule A or claim a credit on Form 1116. In 2026, we anticipate a massive migration back to itemized deductions for those in the highest brackets. As our team often explains, the "math of 2026" is vastly different from the "math of 2024." If you are paying $100,000 in Canadian taxes, being able to deduct that full amount against your US taxable income—without the limitations of the FTC’s "baskets"—could be a game-changer.
Source: TaxFoundation.org
Why Ontario and BC Expats are the Biggest Winners
The impact of the SALT cap expiration is most acute where the tax delta is highest. In Canada, provincial tax rates vary significantly, but the economic hubs of Ontario and British Columbia carry some of the highest burdens in North America. For 2024, the Canada Revenue Agency (CRA) reports that the top marginal tax rate in Ontario is 53.53% for income over $246,752. In British Columbia, the top rate is 53.50% for income over $252,752.
Compare this to the US federal top rate of 37%. Under the current SALT cap, a US expat in Toronto is paying more than 50 cents on the dollar to Canada but can only reduce their US taxable income by a flat $10,000. When the cap vanishes in 2026, that same taxpayer can potentially deduct the entire 53.53% worth of taxes paid. This is particularly beneficial for those with significant US-source income that cannot be easily offset by Foreign Tax Credits due to sourcing rules.
| Tax Year | Income Example | Capped SALT Deduction | Potential SALT Deduction |
|---|
| 2024 (Current) | $250,000 USD | $10,000 | N/A |
| 2026 (Projected) | $250,000 USD | N/A | $100,000+ (Actual Paid) |
As noted in the CRA’s 2023-24 Departmental Plan, the complexity of cross-border tax compliance continues to grow. For expats, the ability to simplify their US return by potentially moving away from the complex Form 1116 (which requires separate calculations for "General Category" and "Passive Category" income) in favor of a robust Schedule A deduction is a welcome relief. Our team emphasizes that for self-employed professionals in Ontario, this change isn't just about paying less; it's about reducing the risk of IRS audits triggered by complex credit carryovers.
Source: Canada.ca
The Strategic Choice: Form 1116 vs. Schedule A Itemization
One of the most common questions we receive is, "Why would I deduct taxes when I can take a dollar-for-dollar credit?" It’s a sophisticated question. Generally, a tax credit (Form 1116) is more valuable than a deduction because it reduces your tax bill directly, whereas a deduction only reduces the income upon which you are taxed. However, the Foreign Tax Credit is subject to strict limitation formulas based on the ratio of foreign-source income to total income.
Per IRS Form 1116 Instructions, if your foreign tax rate is higher than your US rate—which is almost always the case for residents of high-tax provinces—you end up with "excess credits." These credits can be carried back one year or forward ten years. But for many, these credits simply expire, never used. In 2026, if the SALT cap is gone, itemizing those foreign taxes on Schedule A becomes a powerful alternative, especially if you have high US-source income (like rental property in Florida or a US-based consulting contract) that the Foreign Tax Credit cannot touch.
"The expiration of the TCJA limits provides a unique window for tax arbitrage," says our lead cross-border strategist. "Expats who have been stockpiling useless foreign tax credits for years may find that shifting to a full deduction model in 2026 provides immediate cash flow relief that the credit system simply couldn't offer under the current restrictions." We must also consider the Alternative Minimum Tax (AMT), which may still limit the utility of deductions for some, making professional projection essential.
Source: IRS.gov
PRO TIP: If you are planning a major liquidity event, such as selling a business or exercising stock options, consider the timing. Accelerating income into 2026 when you can deduct 100% of your Canadian provincial tax against that income could save you significantly more than if the event occurred in 2025 under the $10,000 cap.
Compliance and Reporting: Forms 2555, 8938, and FBAR
While the SALT cap expiration is a boon for deductions, it does not alleviate the rigorous reporting requirements imposed on expats. In fact, increased deductions often invite closer scrutiny of the underlying foreign accounts. According to FinCEN data, over 1.4 million FBARs (Report of Foreign Bank and Financial Accounts) are filed annually, and the penalties for non-compliance remain draconian, starting at $10,000 for non-willful violations (adjusted for inflation).
When we prepare 2026 returns, we must still balance the SALT deduction with the Foreign Earned Income Exclusion (Form 2555). Many expats use the exclusion to zero out their US liability on the first $120,000 (approximate, inflation-adjusted) of income. However, you cannot take a credit or a deduction for taxes paid on income that you have already excluded. This creates a "stacking" effect where professional guidance is necessary to determine if you should revoke your exclusion to take full advantage of the uncapped SALT deduction.
Furthermore, Form 8938 (FATCA) thresholds remain in place. For taxpayers living abroad, the threshold for filing Form 8938 is significantly higher than the $10,000 FBAR threshold—typically $200,000 on the last day of the year or $300,000 at any point during the year for single filers. As your Canadian tax deductions increase your US tax complexity, ensuring these information returns are perfectly aligned is paramount to avoiding the "quiet disclosure" traps that the IRS and Treasury Department are currently targeting.
Source: FinCEN.gov
Common Mistakes to Avoid
- Ignoring the 2025 Planning Window: Many wait until they file their 2026 return to think about this. By then, the opportunity to defer income or prepay certain provincial taxes in a way that maximizes the uncapped deduction may have passed.
- Double-Dipping: Attempting to claim a Foreign Tax Credit and an itemized deduction for the same dollar of tax paid is a major red flag. Per IRS rules, it is an either/or choice for each specific tax.
- Miscalculating the AMT Impact: Even with the SALT cap gone, the Alternative Minimum Tax can still claw back the benefits of high itemized deductions. 2026 projections must include an AMT analysis to ensure the deduction actually translates to lower tax liability.
- Forgetting the Exchange Rate: All foreign taxes paid must be converted to USD using the functional exchange rate at the time of payment. According to IRS Treasury Reporting Rates of Exchange, using an incorrect average annual rate instead of the spot rate (when required) can lead to significant errors on Schedule A.
Frequently Asked Questions
Will the SALT cap definitely expire in 2026?
As the law is currently written under the TCJA of 2017, the cap is set to sunset on December 31, 2025. While there is bipartisan talk of extending it or modifying it, unless new legislation is signed into law, the $10,000 limit will disappear for the 2026 tax year.
Does this mean I should stop using the Foreign Tax Credit?
Not necessarily. The Foreign Tax Credit is often still more beneficial because it is a dollar-for-dollar reduction of tax. However, the uncapped deduction becomes a superior option for those with high US-source income or those whose credits are limited by the FTC formula.
How do I know if I should itemize or take the standard deduction in 2026?
In 2026, the standard deduction is also expected to decrease as the TCJA’s elevated standard deduction levels sunset. This makes itemizing much more likely to be the advantageous choice for anyone paying substantial Canadian provincial taxes.
Can I deduct Canadian GST or HST on my US return?
Generally, no. Federal and provincial income taxes are deductible, but consumption taxes like GST/HST or property taxes on foreign real estate (post-TCJA) are typically not deductible on a personal US return, though they may be deductible for business owners on Schedule C.
What should I do now to prepare?
Review your 2023 and 2024 returns to see how many Foreign Tax Credits you are carrying forward. If you have a large surplus, we need to model whether transitioning to an itemized deduction model in 2026 will allow you to utilize those credits before they expire or if a shift in strategy is needed.
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