Which country taxes my foreign pension?
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.
Is a lump sum treated differently from monthly pension payments?
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.
Why is tax withheld on my pension when the treaty exempts it?
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.
Are government pensions treated differently under the treaty?
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.
Can I get back tax already withheld from my pension?
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.
Do I have to report a pension that is not taxable where I live?
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.
How does the treaty tie-breaker work when both countries say I am resident?
As a sequence, stopping at the first test that gives an answer: where you have a permanent home available; if in both or neither, where your centre of vital interests is; then habitual abode; then nationality; and if all of those tie, the two tax authorities decide by agreement. It is evidential rather than elective — you do not choose your treaty residence, you demonstrate it, which makes the record of homes, family and time the substance of the claim. See tie-breaking dual residency.
What happens if the two countries disagree about which of them can tax me?
The treaty has a procedure for exactly that. You apply to the competent authority in your residence country, which takes the case up with its counterpart, and the two negotiate a position that removes the double taxation. Some treaties add binding arbitration if they cannot agree. It is slow and it runs on documents, so the practical work is preserving the record and filing protective claims while the clock runs. See our treaty work.