Your U.S. spouse probably doesn’t want to inherit that TFSA

Most Canadians assume leaving a TFSA to a spouse is one of the simplest estate-planning decisions they can make. But when that spouse is a U.S. citizen, green card holder or otherwise subject to U.S. tax filing requirements, the usual approach may create unintended consequences.

The issue stems from the different ways Canada and the U.S. treat the account.

In Canada, the TFSA is relatively straightforward. Investment growth is tax-free, withdrawals are tax-free and spouses can typically inherit the account seamlessly through a successor-holder designation.

The Internal Revenue Service (IRS), however, does not recognize the TFSA as a tax-exempt retirement or savings vehicle. Instead, it is generally treated as a foreign investment account that may trigger ongoing U.S. tax reporting obligations.

If the TFSA holds Canadian mutual funds or ETFs, additional complications can arise because many of those investments are classified as passive foreign investment companies (PFICs) under U.S. tax law.

As a result, a surviving spouse may inherit not only the account itself, but also years of cross-border filing requirements, specialized PFIC disclosures, ongoing U.S. tax complications and potentially significant accounting costs.

The value, not the account

Consider London, a Canadian citizen living in Toronto whose wife is a dual Canada-U.S. citizen. Like many couples, London initially named his spouse as successor holder of his TFSA, assuming it was the simplest and most tax-efficient option.

But after speaking with a cross-border advisor, he learned that inheriting the TFSA itself could expose his wife to ongoing IRS reporting requirements. If the account held Canadian mutual funds or ETFs, PFIC rules could further increase the complexity.

As a result, London instead named his wife as a designated beneficiary, meaning she would receive the cash value of the TFSA after his death rather than inherit the TFSA account itself.

That would allow the assets to be repositioned into a structure better suited to her cross-border tax circumstances.

This does not mean successor holder designations are always inappropriate. Cross-border planning rarely lends itself to universal rules. Citizenship, residency, investment composition and broader estate objectives all matter.

But the broader issue highlights a growing reality for many Canadian families: estate-planning forms designed for domestic situations do not always translate cleanly across borders.

As more Canada-U.S. households navigate increasingly complex financial lives, even a simple beneficiary designation can carry consequences far larger than many investors realize.

The question is no longer simply who inherits the TFSA. It may be whether the TFSA should be inherited at all.