What Happens to My 401(k) When I Move to Canada? Leave It, Roll It, or Move It — the Three Options Priced

Nothing bad happens to a 401(k) when its owner becomes a Canadian resident. The plan stays invested, US tax deferral continues by statute, and Canadian tax deferral continues by treaty — Article XVIII shields the internal growth of a US pension plan from current Canadian tax, and the CRA treats employer plans like 401(k)s as pensions without needing an annual election. The decisions are structural. Option one, leave it where it is: zero friction, though some plan administrators restrict service to foreign-address participants and plan investment menus are what they are. Option two, roll to an IRA: the standard US move, tax-free in both countries when done as a direct rollover, unlocking better investments — but many US custodians will not open or service IRAs for Canadian residents, so the rollover should be executed with a cross-border-friendly custodian, ideally set in motion around the move. Option three, transfer to an RRSP: possible under section 60(j) for lump sums attributable to services rendered while a non-resident — the withdrawal is US-taxable with withholding (and the early-distribution tax if under 59½), Canada includes the amount and allows an offsetting RRSP deduction without needing contribution room, and the US tax claims a foreign tax credit on the Canadian side. The RRSP route consolidates everything in Canada but the friction costs are real, and it is usually the right answer only for specific fact patterns.

Key takeaways

• Leave or roll (options one and two) are tax-neutral events; the choice is about custodian access, investment menu, fees, and simplicity. A direct 401(k)-to-IRA rollover is not a distribution for either country when properly executed.
• The treaty deferral covers growth: no annual Canadian tax on the plan's income; no T1135 disclosure for US retirement plans (they are excluded from specified foreign property); FBAR treatment of employer plans differs from IRAs — the reporting map should be set once and followed.
• Distributions in retirement: taxable in Canada as pension income when received (100% inclusion, ordinary rates); the US taxes its citizen on the same distribution with foreign tax credit coordination — for a US citizen in Canada the net result is generally Canadian rates. Periodic pension payments to a non-citizen Canadian resident would face 15% US withholding under the treaty; lump sums 30%/graduated — for citizens, withholding is just prepayment.
• The under-59½ early-withdrawal tax makes cashing out on the way to Canada the expensive option: US tax plus the 10% additional tax, and Canadian inclusion if taken after arrival. Timing any deliberate withdrawal before Canadian residency keeps Canada out of it entirely.
• The 60(j) RRSP transfer works only for lump sums from services performed while not resident in Canada, requires eating the US tax now (credited in Canada in the transfer year), and is worth modeling for people who want no US financial footprint, expect higher US complications later, or have low-tax-year timing — not as a default.
• Roth 401(k) balances follow Roth rules — treaty-protected with the one-time election, and poisoned by Canadian contributions; roll them to a Roth IRA and file the election, not into a pre-tax account.

The decision in practice

For most movers: consolidate old 401(k)s into one IRA at a custodian that services Canadian residents, before or shortly after the move; leave a current employer's plan alone until leaving that employer; file nothing special in Canada while it grows; and plan retirement withdrawals against the Canadian bracket, since that is the rate that will apply. The RRSP transfer earns a look when the balance is modest, the client is philosophically done with US accounts, or a low-income year makes the US-side tax cheap.

Worked example

A 45-year-old moves from Chicago to Toronto with US$400,000 across two old 401(k)s and a current plan. She direct-rolls the two old plans into an IRA at a cross-border custodian (no tax, either country), leaves the active plan with her ex-employer until year-end and then rolls it too. Canada: no annual tax on the growth, no T1135 line for the plans. At 65, living in Ontario, she draws US$40,000 a year: Canada taxes it as pension income at her marginal rate; the US taxes it too (she is a citizen) with the 15% US withholding on periodic payments creditable and the residual reconciled through foreign tax credits — net cost, Ontario rates. The alternative she priced and declined at 45: a 60(j) transfer of the US$400,000 would have triggered roughly US$120,000-plus of combined US tax and early-distribution tax to move money that was already tax-deferred — paying real dollars today to relocate a deferral she already had.

Official sources

The IRS states that under a 401(k) plan "elective salary deferrals are excluded from the employee's taxable income (except for designated Roth deferrals)," with tax on the deferrals and earnings deferred until distribution; distributions before age 59½ are generally subject to an additional 10% tax. — Internal Revenue Service, 401(k) Plans, https://www.irs.gov/retirement-plans/401k-plans

Article XVIII(7) provides that a beneficiary of a plan "operated exclusively to provide pension or employee benefits may elect... to defer taxation... with respect to any income accrued in the plan but not distributed... until such time as and to the extent that a distribution is made" — the basis on which Canadian residents defer US tax on plans such as Roth IRAs. — Canada-United States Tax Convention, Article XVIII(7), https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-states-america-convention-consolidated-1980-1983-1984-1995-1997.html

Practitioner note

The 401(k) question is usually asked with dread and answered with relief: the treaty did the hard work decades ago, and the plan can simply come along. The two decisions that actually matter are custodian (pick one that will serve a Canadian address before the old one freezes the account) and withdrawal design in retirement (Canadian brackets rule, so the draw-down schedule is a Canadian planning exercise with US paperwork).

See also: how your cost basis steps up on arrival; and browse every cross-border tax topic guide, organized by situation.

Next step

Fairlight prepares the retirement account transition plan — custodian strategy, rollovers, treaty positions, and the retirement draw-down modeled at Canadian rates. See cross-border pricing or book a call.