Cross-Border Divorce: Splitting Retirement Accounts Between Canada and the US

Splitting retirement accounts in a domestic divorce is straightforward in both countries. The US has QDROs (Qualified Domestic Relations Orders) that transfer 401(k) and IRA assets between spouses tax-free. Canada has the ITA 146(16) and 147.3 provisions that allow tax-free RRSP and RPP transfers between spouses under a court order or separation agreement. Neither system was designed for the scenario where one spouse is in Canada and the other is in the US, or where the accounts being divided are in the other country’s system.

A cross-border divorce introduces treaty withholding, foreign trust classification, rollover eligibility, and currency conversion issues that the domestic rules do not contemplate. The wrong sequence of transfers can create a taxable event in both countries simultaneously, with no credit mechanism to prevent double taxation.

US retirement accounts in a cross-border divorce

401(k) and qualified plans

A QDRO under IRC 414(p) allows a 401(k) or other qualified plan to transfer assets to an “alternate payee” (the non-participant spouse) without triggering the 10% early withdrawal penalty or immediate income tax to the participant. The alternate payee is taxed when they eventually take distributions.

When the alternate payee is a Canadian resident:

US tax treatment. The QDRO transfer itself is not a taxable event to either party. When the Canadian-resident alternate payee takes distributions from their portion of the plan, the distributions are subject to US withholding. The default rate for non-resident aliens is 30% under IRC 1441, reduced to 15% under Article XVIII(2) of the Canada-US tax treaty for periodic payments (the definition of “periodic” under the treaty is based on the payment pattern, not the account type).

Canadian tax treatment. CRA treats the distribution as pension income. The full gross amount (before US withholding) is included in Canadian income. The US withholding generates a foreign tax credit under ITA 126(1). If the Canadian-resident spouse receives a lump sum and rolls it into an RRSP under ITA 60(j), the rollover deduction offsets the income inclusion, and the result is a tax-free transfer from the US plan to a Canadian RRSP. The 60(j) deduction has conditions: the amount must be received “out of or under a foreign retirement arrangement” and must be included in income for the year.

The practical sequence: obtain the QDRO from the US court, transfer the alternate payee’s share into a separate account or take a distribution, and roll the distribution into the Canadian spouse’s RRSP in the same calendar year. The US withholding (15% treaty rate) is recovered as an FTC on the Canadian return, and the RRSP rollover deduction eliminates the Canadian income inclusion.

IRAs

IRAs are not subject to QDROs (QDROs apply only to ERISA-qualified plans). IRA transfers incident to divorce are governed by IRC 408(d)(6), which allows a tax-free transfer of an IRA to a former spouse under a divorce decree or separation instrument.

When the recipient spouse is a Canadian resident, the IRC 408(d)(6) transfer is tax-free in the US. But the Canadian spouse now holds a US IRA. The ongoing tax treatment depends on whether the treaty election under Article XVIII(7) is made: if so, the RRSP-like deferral continues (Canada does not tax the annual income inside the IRA until distribution). If the election is not made or not available (it applies only to “pensions” as defined in the treaty), the annual income inside the IRA may be taxable in Canada as foreign trust income.

The cleaner approach in most cases is to take a distribution from the IRA (subject to US withholding at the treaty rate) and roll it into a Canadian RRSP under ITA 60(j), converting the US account into a Canadian account. This avoids the ongoing compliance burden of maintaining a US IRA as a Canadian resident.

Roth IRAs

Roth IRAs are more complex. A Roth transfer incident to divorce under IRC 408(d)(6) is tax-free in the US, just like a traditional IRA. But Canada does not recognize the Roth IRA’s tax-free status. For a Canadian-resident recipient:

• Contributions previously made can be withdrawn tax-free in the US (return of basis), but Canada may treat the same withdrawal as pension income.
• Earnings in the Roth are tax-free in the US if the account meets the 5-year and age-59.5 requirements, but Canada taxes them (the treaty election under Article XVIII(7) does not cover Roth IRAs in the same way, because the Roth’s benefit is tax-free withdrawal, not tax-deferred growth, and the Canadian treatment of Roth remains uncertain absent a specific election).

The general advice is to avoid transferring a Roth IRA to a Canadian-resident spouse in a divorce if possible. The Roth’s US benefits are largely lost once the holder becomes a Canadian resident, and the Canadian tax treatment creates complexity that other account types do not.

Canadian retirement accounts in a cross-border divorce

RRSPs

Under ITA 146(16), an RRSP can be transferred between spouses (or former spouses) tax-free under a court order or written separation agreement. The transfer moves the assets from one spouse’s RRSP to the other’s.

When the recipient spouse is a US resident:

Canadian tax treatment. The transfer under 146(16) is not a deregistration. No Canadian tax is triggered if the assets move from one RRSP to another RRSP in the same spouse’s name, or from one spouse’s RRSP to the other spouse’s RRSP. But if the US-resident spouse does not have an RRSP (they may not, if they left Canada and are no longer contributing), the transfer target may need to be a new RRSP opened in the recipient’s name. Canadian financial institutions may be reluctant to open an RRSP for a non-resident.

US tax treatment. The US-resident spouse who receives the RRSP assets should make the Article XVIII(7) treaty election (on Form 8891, now reported on the information return) to defer US taxation on the RRSP income. Without the election, the annual income inside the RRSP is taxable in the US as foreign trust income. With the election, the RRSP is treated like a US tax-deferred account, and tax is owed only on distributions.

When the US-resident spouse eventually takes distributions from the RRSP, Canada withholds Part XIII tax (25% default, reduced to 15% under Article XVIII(2) of the treaty for periodic payments), and the US includes the distribution in income with an FTC for the Canadian withholding.

RPPs (Registered Pension Plans)

RPPs are employer-sponsored defined benefit or defined contribution plans. Division on divorce is governed by provincial pension legislation (each province has its own rules for pension division). The tax treatment of the transfer (ITA 147.3) is similar to RRSP transfers: tax-free if the assets move to another RPP or to an RRSP/LIRA in the recipient spouse’s name.

For a US-resident recipient, the same considerations as RRSP transfers apply: the treaty election preserves deferral in the US, and distributions are subject to Canadian withholding and US income inclusion.

TFSAs

TFSAs are not retirement accounts, but they often appear in divorce asset divisions. Canada treats TFSA transfers between spouses on divorce as tax-free (the transfer does not affect contribution room, and the recipient’s TFSA retains its tax-free status).

For a US-resident recipient, the TFSA is treated as a foreign trust in the US. The annual income inside the TFSA is taxable in the US, and the reporting burden (Forms 3520, 3520-A) is significant. The cleanest approach is to close the TFSA before or as part of the divorce settlement, rather than transferring it to a US-resident spouse who will face ongoing US reporting obligations and US taxation on the “tax-free” income.

The double-taxation trap

The most common double-taxation scenario in cross-border divorce arises when a transfer that is tax-free under one country’s rules is treated as a taxable distribution under the other’s, and no credit or rollover is available to offset the tax.

Example: a Canadian court orders a lump-sum transfer from one spouse’s RRSP to the other spouse’s non-registered account (not an RRSP). Canada treats this as a deregistration under ITA 146(8): the full amount is included in the transferor’s income and subject to Canadian tax. If the transferor is a US resident, the US also includes the distribution in income (it is an RRSP distribution), and the FTC for Canadian withholding may not fully offset the US tax if the Canadian rate on the distribution is lower than the US rate (unusual, but possible at certain income levels, especially with state tax).

The fix is structural: ensure that transfers go RRSP-to-RRSP (not RRSP-to-cash) on the Canadian side, and that any US-side distribution is rolled into an RRSP under 60(j) if the recipient is Canadian. The divorce decree or separation agreement should specify the transfer mechanism, not just the dollar amount.

Spousal support (alimony) and the treaty

Spousal support adds another layer. Under the treaty (Article XVIII), periodic pension payments are taxable in the country of residence with a reduced withholding rate in the source country. But spousal support is not a pension payment. Under Canadian domestic law, spousal support is deductible by the payer and included in the recipient’s income (ITA 56(1)(b) and 60(b)) if it is periodic and meets the conditions. Under US law post-2017 (Tax Cuts and Jobs Act), alimony is not deductible by the payer and not includible by the recipient for divorces finalized after December 31, 2018.

This creates an asymmetry: if the payer is in Canada and the recipient is in the US, the payer deducts the support in Canada, but the recipient does not include it in the US. If the payer is in the US and the recipient is in Canada, the payer does not deduct in the US, but the recipient includes it in Canada (and may claim an FTC for nothing, since the US did not tax it). The treaty does not specifically override either country’s domestic treatment of alimony.

This asymmetry should be factored into the support calculation. A Canadian payer who gets a deduction is in a different after-tax position than a US payer who does not. The divorce agreement should account for the net-of-tax cost to the payer and benefit to the recipient in their respective countries.

What should I do next?

If you are in a cross-border divorce and retirement accounts are being divided, get tax advice in both countries before any transfers are executed. The divorce lawyer handles the legal division. The cross-border CPA handles the tax consequences and ensures the transfers use the correct mechanisms (QDRO, 146(16) transfer, 60(j) rollover) to avoid unnecessary taxation.

• I’m Canadian and inheriting a US IRA or 401(k), the ITA 60(j) rollover mechanics in a non-divorce context
• Can I keep my US brokerage and IRA after moving to Canada?, ongoing compliance for holding US accounts as a Canadian resident
• 401(k) and Roth IRA when moving back to Canada, the broader rollover and treaty election landscape
• Is a TFSA a foreign trust for US purposes?, why transferring a TFSA to a US-resident spouse creates problems

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.