There is no single answer across the treaty network, and pension articles are the least uniform provisions in it. The same retirement income can be taxable only where you live, only where it was earned, or in both countries with a credit in the country of residence. So the starting point is always the particular treaty between the two countries concerned, read with the type of pension in front of you. Reasoning from how a friend’s pension is treated, or from another country’s treaty, is the most reliable way to get this wrong.
How does the treaty article on pensions and annuities work?
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The article distinguishes periodic pensions from lump sums, and government pensions from private ones. The mechanism is the answer; the paperwork is what makes the mechanism available.
How it works in practice
The article distinguishes periodic pensions from lump sums, and government pensions from private ones. Because the domestic withholding rate is applied at source, the treaty position usually has to be documented before payment or reclaimed afterwards.

The exception
Pension articles are the least uniform provisions in the treaty network: the same retirement income can be taxable only where you live, only where it was earned, or in both with a credit.
Your next step
The full treatment — who it binds, the deadline, the penalty and the fixed fee — is on Pensions and annuities — the treaty article. The quote comes before the work, in writing.
Reviewed for the 2025 and 2026 filing seasons by Udit Gupta, International Tax, Cross-Border Tax & Transfer Pricing Expert, Legal Quotient Consultants. General guidance only. Your own facts decide the answer, so bring them to a call before relying on this.
Cross-border tax case studies
Treaty position documented with the payer before pension payments began
A client approaching retirement in one country held a pension entitlement in another and wanted to avoid a cycle of withholding and reclaiming. We established the treaty treatment of that pension under the applicable article before the first payment was drawn, then dealt with the paying institution so the position was on its file in the form it required. The engagement produced a documented treaty conclusion and withholding applied correctly from the first payment, which removed the need for any reclaim at all.
Read how this one runsA commuted lump sum characterised before the transfer was made
A client intended to commute a foreign pension entitlement and take it in one payment. Because the article distinguishes periodic pensions from lump sums, the commutation stood to move the taxing right between the countries, and once paid the characterisation could not be undone. We set out the treatment of each alternative under the applicable treaty in advance. The engagement produced a written comparison of the two routes and the reporting that each would require, so the decision was taken with the consequence known rather than discovered afterwards.
Read how this one runsA government service pension separated from private pension income
A retiree received pension income from a career that had spanned public service and private employment, all arriving together and all being treated the same way on the return. The article allocates taxing rights differently for pensions paid in respect of government service, so the streams had to be separated by component. We traced the entitlement back through the employment history. The engagement produced a breakdown by source with the treaty treatment stated for each part, and amended returns where the earlier blanket treatment had been wrong.
Read how this one runsOver-withheld pension tax reclaimed for several earlier years
A client had been receiving a foreign pension for years with domestic-rate tax deducted throughout and no treaty position ever documented. We established the treatment under the applicable article, prepared reclaims for the years still open under the source country’s procedure, and reviewed the home-country returns to make sure no credit had been claimed for tax that was being recovered instead. The engagement produced recovered withholding for the open years, documentation lodged with the payer for future payments, and consistent filings on both sides.
Read how this one runsAn annuity bought from savings tested against the pension article
An individual had purchased an annuity from after-tax savings rather than through an employment arrangement, and it was unclear whether the pension article reached it at all or whether another provision governed the payments. We read the contract against the article’s own distinctions and worked out which part of the treaty applied to it. The engagement produced a written classification of the payments, the reporting treatment in both countries that followed from it, and a reasoning note kept on file for the years ahead.
Read how this one runsRetirement income from several countries mapped to its own treaty outcomes
A client who had worked in a number of countries drew retirement income from each of them and had been applying one assumption across the lot. Because pension articles differ so widely, each stream needed to be read under its own treaty with the country of residence. We tabulated the income by payer and country and analysed each against the relevant article. The engagement produced a per-stream treatment schedule, a corrected return in the country of residence, and reclaims where withholding had been taken contrary to the applicable treaty.
Read how this one runsCanadian Pension Paid Abroad and Taxed at the Flat Rate
Pension and annuity payments to a non-resident carry a flat withholding that often exceeds what a return would produce. The alternative filing is elective, and whether it helps depends on the total income for the year rather than on the payment alone.
Read how this one runsWithheld at the Statutory Rate When a Treaty Rate Applied
Where withholding has already gone out at the full domestic rate, the treaty rate is recovered rather than applied. The file establishes entitlement for each payment, then puts the documentation in place so the following year runs at the correct rate from the start.
Read how this one runsAll case studies — every published engagement in one place.
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Working from anywhere doesn't mean taxed nowhere: residency defaults, employer payroll exposure and treaty relief decide where income actually lands.
Working from another country does not by itself end tax residence in the one you left, and it can start one where you are sitting. Day counts, ties, the employer's own exposure and the treaty tie-breaker all point at the same question, and the year you move is the year it has to be answered on paper.
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More on Pensions and annuities — the treaty article
Frequently, yes. The article distinguishes periodic pensions from lump sums, and the country that may tax the income can differ between the two. That has an obvious practical consequence: commuting a pension, or taking a one-off payment out of it, can move the taxing right from one country to the other and can do so irreversibly. The decision is worth taking with the treaty position established first. Once the payment has been made, the characterisation is fixed and the only remaining question is how to report it correctly on both sides.
Because withholding at source runs on domestic rules by default. The payer deducts at the domestic rate unless the treaty position has been documented with them beforehand, and a treaty that exempts or limits the tax does not reach into the payroll of the paying institution by itself. That leaves two routes, and they differ in effort rather than in outcome: document the position with the payer so the correct amount is withheld from future payments, or pay first and reclaim afterwards through whatever procedure the source country provides.
Usually, yes. The article draws a line between pensions paid in respect of government service and private pensions, and the allocation of taxing rights can differ between them, so the nature of the former employment is part of the analysis rather than a detail. Where someone has both, each stream has to be tested separately even though they arrive in the same bank account. The complication we see most often is a career that spans public and private employment, where a single pension entitlement has been built from both and has to be looked at by component.
Often, through a reclaim procedure in the country that withheld, or as a credit in the country where you are resident to the extent the tax is creditable there. Which route works depends on the treaty position and on the source country’s own rules, and the two are not interchangeable. Either way the same underlying evidence is needed: residence, the nature of the pension, and the treaty provision relied on. The practical advice is to fix the withholding going forward at the same time, so the reclaim is a one-off exercise rather than an annual one.
Reporting and taxing are separate questions, and the answer to one does not settle the other. Where a treaty gives the taxing right to the other country, the income is often still entered on the return in the country of residence with the exemption or the credit then claimed against it, because that is the mechanism by which the treaty position is actually taken. Leaving it off the return entirely tends to produce the enquiry it was meant to avoid, since the payment is usually visible to the authority through information exchange in any event.
Two moments, and the earlier one matters more. Before a payment is made, you give the payer a declaration so they withhold at the treaty rate rather than the domestic one — a W-8BEN for a US payer, an NR301 for a Canadian payer, a residency certificate and Form 10F for an Indian one. After the year ends, you claim the position on a return, and the United States often wants it disclosed there in its own right. Claiming late means asking for a refund instead. See NR301 declarations.
Three things usually have to line up: proof you are resident of the treaty country, a declaration to whoever is paying you so they withhold at the treaty rate rather than the statutory one, and the claim itself on the return of the country giving relief. Do it before the payment where a reduced rate is available — claimed afterwards it becomes a refund exercise instead, which takes far longer. See certificates of residency.



