Do I have to file at home while living in France?
It depends on residence, not on address — except for US citizens and green-card holders, for whom the answer is yes regardless of where they live. We settle the residence question first, because every other answer follows from it.
Is there a treaty between my country and France?
That is verified rather than assumed: we confirm which treaty text governs France and your home country for the year in question, because a protocol can move a rate or an article between years. If there is no treaty, unilateral credit rules are what prevent double taxation.
I own property in France. Where is the rent taxed?
Rent from immovable property is almost always taxable where the property is situated, frequently by withholding on the gross amount, with your home country taxing the same income and giving credit. A net-basis election, where one exists, is usually the difference between tax on profit and tax on turnover.
Where is my pension taxed if I retire to France?
It depends on the kind of pension and on the treaty in force for your year, if there is one. Treaties commonly deal with pensions from private employment and pensions paid out of public funds under different rules, so two payments arriving in the same bank account can belong to different countries for tax. The first step is an inventory of what you receive and who pays it, before anything is claimed. Once that is settled, relief for any double charge follows through a credit, and the payer's withholding is adjusted to match the answer rather than the other way round.
Why is tax still deducted at home from my pension?
Because the payer withholds on the basis of the instructions it holds, not on the basis of your residence. Withholding is a payment on account collected at source, and until the payer is told otherwise it keeps collecting at its default rate. Where the treaty gives France the taxing right, relief usually has to be claimed and certified before the payer will reduce the deduction, and until that happens the money comes back a year later through a return. Sorting the paperwork with the payer is generally worth more than the refund itself, because it stops the problem repeating annually.
Can I claim credit in France for tax withheld at home?
Where both countries tax the same pension, yes in principle, but the claim has limits worth knowing. Relief is generally capped at the tax the other country would charge on that income, so a credit does not turn a higher charge into a lower one. It applies to income tax rather than to social levies, and pensions can attract charges of both kinds. The two tax years also have to be matched: a deduction made in one country's year is claimed against the corresponding year in the other, and those periods rarely coincide exactly.
I took a lump sum from my pension — how is that treated?
Often quite differently from the regular payments out of the same plan. Some systems treat a lump sum as pension income drawn early, others as a distinct event of its own, and a treaty may deal with it under a separate rule again. The result is that a withdrawal which is straightforward at home can be taxed on an entirely different basis in France, and a credit may relieve only part of it. If the withdrawal is still ahead of you, its timing relative to your change of residence is the decision that matters most, and it is worth taking before the payment is requested.
Do social charges apply to my pension in France as well?
They can, and they are a separate question from income tax. A social levy is not the same charge as an income tax even where both appear as deductions on one statement, and your home system will generally allow credit only for the income tax element. That means the paperwork has to separate the two, from the French documents, before any credit claim is made. Where a social security agreement applies between the countries, it may also determine which system you belong to, which is a better answer than paying into both and reclaiming afterwards.
My wife has her own pension — are we taxed together in France?
For many purposes France looks at the household rather than the individual, so both pensions can enter one computation, while at home each of you almost certainly continues to be assessed separately. That mismatch is not a problem in itself, but it makes the credit claims fiddly: foreign tax paid by one spouse can attach to income the other spouse reports at home. We prepare the two positions together, from one schedule of income and withholding by payer and by period, so that the claims on each side rest on the same underlying figures.
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 does Form W-8BEN actually do?
It tells a US payer that you are not a US person and, where you are entitled, claims the treaty rate on the income they are about to pay you — so withholding comes off at the reduced rate rather than the statutory one. It goes to the payer or the broker, never to the IRS, and it expires, so a stale form is a common cause of over-withholding. Getting it in before payment is the difference between a lower rate and a refund claim. See Form W-8BEN.