Getting 15% Instead of 30% Withheld on Your US Retirement Withdrawals From Canada: The W-8BEN Treaty Claim Your Custodian Needs

The 30% that appears on a Canadian resident's first IRA withdrawal statement is not a mistake by the custodian — it is the statutory default for pension payments to nonresident aliens, and the treaty rate replaces it only when three things line up. First, the claim: the recipient must have a valid Form W-8BEN on file with the custodian certifying foreign status and claiming treaty benefits — Part II of the form identifies Canada as the country of residence, cites the treaty article (the pensions and annuities article, Article XVIII), states the 15% rate, and explains the basis (a resident of Canada receiving periodic pension payments); without a valid W-8BEN, the custodian must withhold 30% (or, worse, treat the recipient as a US person subject to backup withholding and information reporting on a 1099-R if the account still shows a US address and no foreign certification); the form expires at the end of the third calendar year after signature and must be renewed, and a change of address or status invalidates it. Second, the payment type: the treaty's 15% cap applies to periodic pension payments — the article provides that pensions may be taxed by the source country, but if the recipient is a resident of the other country the tax on periodic payments may not exceed 15% of the gross amount — and lump-sum distributions are not periodic, so a Canadian resident who withdraws an IRA in one payment, or in irregular large amounts, faces the 30% rate on those payments even with a W-8BEN on file; the line between periodic and lump-sum is not defined with precision in the treaty, and the working approach is that regular installments (monthly, quarterly, annual) of reasonably consistent amounts under a systematic withdrawal arrangement — and required minimum distributions taken as annual payments — are periodic, while a single withdrawal of the balance, or a few large irregular withdrawals, are not. Third, the account must be a pension within the treaty's meaning — IRAs, 401(k)s, 403(b)s, and similar qualified plans are, and Roth IRA qualified distributions are excluded from income in both countries under the treaty's Roth provisions rather than taxed at 15% (the Roth guide covers the election that makes this work). With the three aligned, the custodian withholds 15% on periodic payments, reports them on Form 1042-S (not a 1099-R), and the Canadian resident's US obligation is generally complete — the 15% is a final tax on the pension income, and no 1040-NR is required unless the recipient has other US-source income requiring a return or is claiming a refund of over-withholding (the 1042-S refund guide). The Canadian side: the distributions are pension income taxable in Canada as received (the treaty's deferral of the plan's growth ends at distribution), converted at the payment-date rates, with a foreign tax credit for the 15% US tax — fully usable against the Canadian tax on the same income, which at Canadian rates exceeds 15% for nearly everyone; the 30% rate, where it applies to lump sums, is also creditable but often exceeds the Canadian tax on the payment at lower brackets, stranding the excess (the foreign tax credit cannot exceed the Canadian tax on the foreign income) — the concrete cost of the lump-sum route. Structuring withdrawals so the cap applies: set up a systematic withdrawal plan with the custodian (monthly or quarterly fixed amounts, or annual RMDs) rather than ad hoc withdrawals; where a larger amount is needed, spread it over payments in a pattern the custodian will treat as periodic under its own procedures (custodians differ — some apply 15% to any distribution with a valid W-8BEN, some distinguish; ask before the first payment); and keep the W-8BEN current — the expiry is the most common reason a 15% arrangement reverts to 30% without anyone noticing until the year-end statement. The RMD note: required minimum distributions apply to Canadian residents holding US plans exactly as to US residents (the age-based start, the annual minimum), taken as annual periodic payments they qualify for the 15% rate, and the 25% excise for missed RMDs applies regardless of residence — a custodian that stops sending RMD notices to a foreign address is a risk to manage. The estate note closes it: a Canadian resident's US IRA passes to beneficiaries under US rules (the inherited-IRA guide covers the ten-year rule and the beneficiary's own W-8BEN), and the account is not a US-situs asset for US estate tax purposes in the hands of a Canadian resident who is not a US citizen — a relief for the estate side, and one more reason the account is usually kept rather than collapsed.

Key takeaways

• 30% is the default, 15% is the treaty: pension payments to a nonresident alien are withheld at 30% unless a valid W-8BEN claiming Article XVIII's 15% rate is on file — the form expires after three years and dies with an address or status change.
• Periodic payments only: the 15% cap applies to periodic pension payments; lump sums and irregular large withdrawals stay at 30% even with a W-8BEN — systematic withdrawal plans and annual RMDs are the periodic structure.
• The 15% is generally final: reported on a 1042-S, no 1040-NR unless other US income or a refund claim — and fully creditable in Canada against the Canadian tax on the same pension income.
• The 30% strands credits: at lower Canadian brackets the 30% US tax on a lump sum exceeds the Canadian tax on it, and the excess is lost — the concrete cost of collapsing the account.
• Custodians differ: some apply 15% to any distribution with a valid form, some distinguish periodic from lump-sum — confirm the custodian's practice before the first payment and keep the W-8BEN renewed.
• RMDs and estate: RMDs apply to Canadian residents as to anyone; the 25% excise for missed ones does too; and the IRA is not US-situs for estate tax in a non-citizen Canadian resident's hands — a reason to keep it.

The withdrawal setup checklist

W-8BEN completed with Part II treaty claim (Canada, Article XVIII, 15%, periodic pension payments), signed, delivered to the custodian, and calendared for renewal before the third-year expiry. Custodian's practice on periodic-versus-lump-sum confirmed in writing. Systematic withdrawal plan established (fixed monthly or quarterly amounts, or annual RMDs) rather than ad hoc withdrawals. Address on file as the Canadian address. RMD schedule confirmed from the applicable start age with the custodian's notices redirected to the Canadian address. Canadian side: the payments recorded at payment-date rates, the 15% credited on the T1. One afternoon at setup, one renewal reminder every three years.

Worked example

A retired engineer in Kelowna, Canadian citizen, holds a US$620,000 IRA from a US career. Year one, before any planning: he requests a US$60,000 withdrawal for a renovation; the custodian, holding an outdated W-9 from his US years, withholds 24% backup withholding and issues a 1099-R as if he were a US person — a mess requiring a 1040-NR, a corrected form, and months. Year two, set up properly: W-8BEN with the treaty claim delivered; the custodian confirms in writing that it applies 15% to systematic withdrawal plan payments and 30% to one-off requests; a quarterly plan of US$12,500 is established (US$50,000 a year — roughly his RMD once he reaches the age, and periodic in form); the custodian withholds 15% (US$7,500 a year) and issues a 1042-S; no 1040-NR is needed. Canadian side: C$68,000 or so of pension income at payment-date rates, Canadian tax at his bracket about C$16,000, the US$7,500 (about C$10,200) fully credited — net Canadian tax about C$5,800, total tax on the withdrawals roughly what a Canadian pension of the same size would bear. The lump-sum alternative he'd contemplated — collapsing the IRA to simplify his affairs — would have withheld 30% (US$186,000) on the full balance, pushed the payment into a bracket where the Canadian tax on it fell below the US tax and stranded a six-figure credit, and converted a tax-deferred account into after-tax cash with a permanent loss. His IRA stays, his W-8BEN renews every third October, and the 1042-S arrives each March showing 15%.

Official sources

"Pensions may also be taxed in the Contracting State in which they arise and according to the laws of that State; but if a resident of the other Contracting State is the beneficial owner of a periodic pension payment, the tax so charged shall not exceed 15 per cent of the gross amount of such payment." — Canada-United States Tax Convention, Article XVIII(2)(a), https://www.canada.ca/en/department-finance/programs/tax-policy/tax-treaties/country/united-states-america-convention-consolidated-1980-1983-1984-1995-1997-2007.html

Form W-8BEN is provided by foreign individuals to withholding agents to establish foreign status and, where applicable, to claim a reduced rate of withholding under an income tax treaty on US-source income such as interest, dividends, rents, and royalties. — Internal Revenue Service, About Form W-8BEN, https://www.irs.gov/forms-pubs/about-form-w-8ben

Practitioner note

The 30% on a Canadian retiree's first IRA statement is the treaty rate's absence, not the custodian's error, and fixing it is a W-8BEN with a Part II claim plus a withdrawal structure the custodian will call periodic. Our setup runs the form, the custodian's written practice, the systematic withdrawal plan, and the three-year renewal reminder — and it exists because the alternative most retirees reach for, collapsing the account, converts a 15% creditable tax into a 30% partly-stranded one on the entire balance.

See also: For how the RRSP and the 401(k) compare across the border, see how the RRSP and the 401(k) compare across the border; and browse every cross-border tax topic guide, organized by situation.

Next step

Fairlight prepares the US retirement withdrawal setup — the W-8BEN treaty claim and renewal calendar, custodian practice confirmation, systematic withdrawal plan design for periodic treatment, RMD scheduling, and Canadian reporting with the foreign tax credit. See cross-border pricing or book a call.