Do I have to file at home while living in Switzerland?
Residence decides it, and residence is a question of facts rather than of where your post arrives. The one exception is US citizenship, which carries the filing obligation with the person wherever they go. So the first thing we establish is which system still claims you.
Is there a treaty between my country and Switzerland?
That is verified rather than assumed: we confirm which treaty text governs Switzerland 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 Switzerland. 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.
Will my home pension be taxed in Switzerland if I retire there?
Ordinarily the country you become resident in taxes your worldwide income, pensions included, and Switzerland is no exception. But pensions are one of the areas where treaties depart from the general rule, and they often split by the type of pension rather than by the recipient. Government service pensions are commonly reserved to the paying country; private and occupational pensions commonly follow residence; social security pensions vary between treaties. So the question is not whether Switzerland will tax your pension but which provision covers each of your pensions, one by one. Someone with a state pension, an employer scheme and a personal plan may find all three land differently.
Why is tax deducted from my pension before it reaches my Swiss account?
Because the paying country is applying its own withholding at source, and the payer generally has no discretion about it. Withholding is collected on the payment rather than on your eventual liability, so it takes no account of your allowances, your other income or the treaty position between the two countries. Two corrections exist in principle. The payer can be instructed to apply a reduced or nil rate, which normally requires a residence certificate and an application lodged in advance. Or the tax can be recovered afterwards by claim. The first is far less trouble than the second, so it is worth attending to before the first payment rather than after it.
How do I get back tax withheld on a pension I should not have paid?
By claiming it from the country that withheld it, with proof that you were resident elsewhere at the time. That proof is normally a residence certificate issued by the authority where you now live, which means your Swiss position must be registered and in order before the claim can start. Claims are made for a defined period, so a single application will not cure future payments; the separate step of putting relief in place with the payer is what stops the problem repeating. The refund and the relief also interact: where a credit has already been claimed at home for the same tax, recovering it later means correcting the earlier return.
Is my state pension taxed differently from my company pension in Switzerland?
Often, yes, and it surprises people who think of retirement income as one thing. Treaties usually deal with government service pensions, social security pensions and private or occupational pensions in separate provisions, and the country given the taxing right can differ between them. Swiss domestic law then applies its own treatment to whatever Switzerland is entitled to tax, at federal, cantonal and communal level. The practical consequence is that a retirement income made up of several strands should be analysed strand by strand, with the source of each identified before any of them is reported. Treating the total as a single figure is how relief gets under-claimed.
Do I still have to file at home once I have retired to Switzerland?
That depends on what you left behind rather than on where you are living. Residence may have ended, but income arising in the old country typically remains taxable there: rent from a property, income from a business interest, sometimes pension payments the treaty assigns to it. A non-resident filing obligation can therefore continue long after the move. Citizenship matters too, because some countries tax their citizens wherever they live, in which case the return continues regardless of residence. The step worth taking early is a written list of every source of income you still hold at home and what each one requires, since the obligations attach per source.
Does the canton I retire to affect the tax on my pension?
It can, because the Swiss charge is the sum of three layers — federal, cantonal and communal — and only the first is uniform. Where a treaty gives Switzerland the taxing right over a pension, the rate applied to it therefore depends on where in Switzerland you settle, down to the commune. Retirees have more freedom here than employees, since the choice of address is not tied to an office. Even so, the cantonal difference is one input among several: health insurance, the treatment of a lump sum if one is drawn, and how the home country's relief mechanism works can each matter as much as the headline rate.
Which countries have a tax treaty with the United States?
Around sixty, including Canada, the United Kingdom, India, Australia and most of western Europe — but the list matters less than the terms, because each treaty caps rates and allocates income differently. Two countries with treaties can produce opposite answers on the same pension or the same royalty. What decides your position is the specific article covering your income type. See our country guides.
Is my foreign pension taxable?
Usually in at least one country, and which one depends on the treaty article covering pensions — some give the taxing right to the country paying it, others to where you live, and several treat government service pensions differently again. Withholding at source is common and often reducible by treaty, with an elective return recovering an over-deduction. See the pensions article.