Moving to France as an expat means navigating one of the most complex tax systems in the world. As a French tax resident, you are liable to pay French income tax on your worldwide income — salary, pension, rental income, investment income, and capital gains — regardless of where that income was earned or where your bank accounts are held.
Understanding your residency status is the essential first step. French tax residency is determined by your main home, your principal employment, or your centre of economic interests being in France. Once your residency status is established, French tax law applies in full: you must file an annual income tax return with the French tax authorities (impots.gouv.fr), declare all foreign income, and understand how France's tax treaties with your home country — whether the United Kingdom, the United States, or elsewhere — affect your tax obligations and help you avoid double taxation.
This guide covers everything expats and expatriates need to know about French income tax: tax rates, social charges (CSG/CRDS), filing requirements, deadlines, double taxation treaties, foreign tax credits, and the key rules that apply to employment income, pension income, rental income, and investment income when living in France.
Are you a French tax resident?
This is the first question to answer. You are considered a French tax resident if any one of the following applies: your main home is in France, your main professional activity is in France, or your centre of economic interests is in France. The French tax year runs from 1 January to 31 December, and the 183-day rule is the most commonly cited threshold — spend more than 183 days in France in a calendar year and you will generally be treated as a resident for tax purposes.
Once you are a French tax resident, France taxes you on your worldwide income — salary, pensions, rental income, investments, and capital gains — regardless of where that income comes from.
How French income tax is calculated
France uses a progressive tax scale applied at the household level, not individually. The system divides total household income by a number of "parts" — one per adult, plus additional parts for children — to determine the applicable tax rate. This system, known as the quotient familial, typically reduces the tax burden for larger families.
For 2026 (income earned in 2025), the tax bands per part are: up to €11,600 at 0%, from €11,601 to €29,579 at 11%, from €29,580 to €84,577 at 30%, from €84,578 to €181,917 at 41%, and above €181,917 at 45%.
Unlike the UK's PAYE system, there is no automatic deduction at source managed by your employer from day one. France operates a withholding system (PAS — prélèvement à la source) where tax is deducted monthly and reconciled after you file your annual return each spring.
Filing your tax return
Everyone living in France must file an annual tax return — there are no exceptions for expats. Returns are typically due between late April and early June depending on your département, with online filers getting a slightly later deadline. Missing the deadline triggers an automatic penalty, so mark the date in your calendar from your very first year of residency.
Social charges: the hidden extra
On top of income tax, France levies social charges (prélèvements sociaux) on most types of income. For investment and rental income, the standard rate is 17.2%, made up of the CSG (9.9%), the CRDS (0.5%), and a solidarity levy (7.5%).
There is an important exception for UK and EU expats. If you are affiliated to another EU, EEA, Swiss, or qualifying UK social security system, you may be exempt from the CSG and CRDS components — though the 7.5% solidarity levy still applies. This can make a significant difference to your overall tax bill and is worth checking with a financial adviser.
How pensions are taxed
Pensions are generally taxable in France for residents, but this depends heavily on the tax treaty between France and your home country. Many government service pensions (NHS, civil service, military) remain taxable in the UK under the UK-France double taxation treaty, but must still be declared in France. Private pensions are typically taxed in France as earned income, with a 10% abatement applied subject to caps.
For Americans, the situation is more complex: the US taxes its citizens on worldwide income regardless of where they live, which means US expats in France may face obligations in both countries simultaneously.
Dividends, interest and capital gains
For investment income — dividends, interest, and capital gains on shares — France applies a flat tax (PFU) of 30%, made up of 12.8% income tax and 17.2% social charges. You can elect to be taxed at the progressive income tax scale instead if that works out cheaper for you, which is worth calculating each year.
High earners: additional levies
If your household income exceeds €250,000 (or €500,000 for couples), an additional contribution (CEHR) of 3% to 4% applies on the portion above those thresholds. From 2025, a new minimum effective tax rate of 20% also applies for those in these brackets.
Double taxation: paying twice?
France has tax treaties with most countries, including the UK and the US, specifically to prevent double taxation. These treaties determine which country has the right to tax each type of income. In most cases, you will pay tax in one country and receive a credit in the other. However, the mechanics vary significantly by income type and country of origin, so specialist advice is strongly recommended.
Practical checklist for new arrivals
Before and after your move, you should confirm your tax residency status, understand which country has the right to tax each of your income sources, check whether you qualify for the social charges exemption, choose between the flat tax and the progressive scale for investment income each year, and register with the French tax authorities (impots.gouv.fr) as soon as you establish residency.
This article is for informational purposes only and does not constitute tax or financial advice. Tax rules change frequently and your situation will depend on your specific income, nationality, and country of origin. Always consult a qualified independent adviser familiar with both French and your home country's tax system. We can recommend one if needed.
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