Taxation Français explained in simple terms
(baseline - tax filing 2026)
Taxation Français explained in simple terms
(baseline - tax filing 2026)
Filing your French income tax return can feel intimidating the first time, especially if you're juggling salary from two countries, foreign bank accounts, or a family situation that's changed since last year.
This guide walks through the essentials: who has to file, how and where to do it, and what to watch out for if you have ties to India.
It's written to stay useful year after year, so it focuses on the rules and process rather than any single year's exact numbers.
Always confirm the current year's dates and figures on impots.gouv.fr before you file.
It's meant to get you oriented, not to replace personalized advice, for anything specific to your situation, please feel free to reach out on reenymodi@gmail.com.
If you have moved from India to France, this is probably the first thing to understand.
Tax years for France: January to December. France uses the calendar year as its income-tax year.
So: 1 January 2025 → 31 December 2025 = French income year 2025
You normally file that year's income during the following spring:
Income earned in 2025 → French tax return filed in 2026
Tax Years for India: April to March: India uses a different financial year:
1 April 2025 → 31 March 2026 = Indian Financial Year (FY) 2025–26. The corresponding Indian assessment year is AY 2026–27.
So the two systems don't line up neatly.
Period Jan–Mar 2025 plays a part of French 2025 tax year and a part of Indian FY 2024–25
Apr–Dec 2025 will enter Part of French 2025 tax year and Part of Indian FY 2025–26
Jan–Mar 2026 with same logic, will be Part of French 2026 tax year and Part of Indian FY 2025–26
Why does this matter?
Suppose you moved from India to France in September 2025.
Your Indian documents may cover April 2025 to March 2026, while your French return for 2025 is concerned with January 2025 to December 2025.
Those periods do not match.
This is why you should not simply take the total amount from an Indian Form 16 or Indian tax return and copy it into your French return.
For a cross-border year, you may need to identify:
when the income was earned;
where you were tax resident during that period;
where the work was physically performed;
whether tax was already paid in India;
what the France–India tax treaty says about that particular type of income.
The same issue can arise with interest, dividends, rental income, capital gains and other foreign-source income.
A simple way to remember it
India asks: "What did you earn from 1 April to 31 March?"
France asks: "What did you earn from 1 January to 31 December?"
That difference alone explains many of the questions people have when they file their first French return after moving from India.
Tax Year, Filing Year and When You Actually Pay Tax
Another French tax concept that can initially feel confusing is that the year you earn the income, the year you file the return, and the timing of tax payments are not necessarily the same thing.
For example:
2025: You earn income
Spring 2026: You declare your 2025 income
2026: Your tax position is calculated/reconciled based on that declaration
France also generally uses prélèvement à la source (PAYE-style withholding) for many types of income. That means employees usually don't wait until the annual tax return to pay all of their income tax. Tax is generally withheld from salary during the year.
The annual declaration is therefore important even if tax has already been deducted from your payslip.
It allows the administration to:
calculate your final tax position;
account for your household situation;
include other income;
apply eligible deductions, reductions and tax credits;
take foreign income into account where applicable;
reconcile what has already been withheld.
So don't think of the annual return simply as "the form I use to pay my tax". It is also the mechanism through which the French tax administration determines whether the amounts already withheld were correct.
If you were a tax resident of France in 2025, you generally need to file a return in 2026, even if your income was zero.
France doesn't automatically exempt low earners, students, or people who arrived partway through the year; filing (or not) is a positive obligation, not something that only kicks in once you owe money.
You're typically considered a French tax resident if any of the following applies:
You lived in France for more than 183 days during 2025 (proceeding year), or
France was your main home or where your family lives (even in rented accommodation), or
Your main professional activity was carried out in France, or
France was the centre of your economic interests.
Note that the 183-day rule is a useful shortcut, not the only test. Residency is ultimately judged on the whole picture of your life (where your family is, where you work, where your income and assets are based), so someone can be a French resident even without hitting 183 days, and vice versa.
If your year is genuinely borderline, for example a mid-year move, or ties split across two countries, that's a good reason to get a professional opinion rather than guess.
Each spring, you file for income earned the previous calendar year (e.g. in spring 2027 you'd file for income earned in 2026).
The exact dates shift by a few days every year, but the pattern has been very consistent:
Online filing opens - Early-to-mid April
Paper return deadline (all zones, incl. residents abroad) - Mid-to-late May (around the 19th–22nd)
Online deadlines
Zone 1 (departments 01–19, and non-residents) - Late May (around the 21st–25th)
Zone 2 (departments 20–54) - ~1 week after Zone 1 (around the 28th–30th)
Zone 3 (departments 55–974/976) - ~1 week after Zone 2, into early June (around the 4th–8th)
Your zone depends on your department of residence as of 1 January of that year.
Check the exact dates and your zone each year on impots.gouv.fr, since the administration confirms them only a few weeks before the campaign opens.
Missing your deadline can trigger an automatic surcharge (10%, rising if the delay continues) plus late interest, so it's worth putting a placeholder reminder on your calendar in April even before the exact date is out.
If you're filing for the first time, you can't yet file online, you don't have a numéro fiscal (French tax number) or an online account. You'll need to:
Complete a paper return (Formulaire 2042), downloadable from impots.gouv.fr.
Submit it to your local Centre des Finances Publiques (find yours via the postcode lookup on the site).
Wait for the administration to assign you a numéro fiscal. This becomes your login for all future filings.
From your second year onward, filing online is the norm (and required by law once you have internet access):
Log in at impots.gouv.fr → Votre espace particulier.
Your return will usually arrive pre-filled with salary, unemployment benefits, and similar income already known to the administration.
Check every pre-filled figure carefully rather than just confirming. Pre-filled doesn't mean correct, especially for anything foreign-sourced, which French authorities can't see automatically.
Always needed:
Proof of taxable income (December payslip or annual tax certificate)
Proof of address (justificatif de domicile)
Bank details (RIB) for payments or refunds
First-time filers specifically:
Formulaire 2042
Proof of your arrival date in France (visa, residence permit, or rental contract) — this establishes when your tax residency began
If employed or formerly employed:
Attestation fiscale from your employer
Attestation from France Travail, if you received unemployment benefits (ARE)
If married or with children:
Marriage or PACS certificate
Children's birth certificates
Childcare receipts (relevant for the childcare tax credit. In other terms, some expenses made on childcare gives tax deductions, for instance crèche fees or school fees.)
If you have foreign income or assets:
Foreign bank account details (bank name, IBAN, country)
Proof of income from India (payslips, Form 16, TDS certificates)
Insurance/policy documents (e.g. LIC)
Property documents, if you earn rental income abroad
Missing documents are the single most common cause of delay, it's worth assembling everything, French and foreign, before you open the form.
Your household situation on 1 January of the tax year is what determines how you file, and marriage, PACS, or a new child changes your quotient familial (the number of "parts" your income is divided by before tax is calculated: 1 part single, 2 for a married/PACS couple, 2.5 with one child, and so on).
A few common scenarios:
Both partners are already French residents: declare the marriage/PACS directly on impots.gouv.fr and follow the prompts to merge your two files.
One spouse has a French numéro fiscal, the other doesn't:
log in → Gérer mon prélèvement à la source → Signaler un changement de situation familiale → select Mariage/PACS and enter the date and your partner's fiscal number where applicable.
A spouse is joining you in France for the first time, or has never been known to French tax authorities:
the first joint filing after marriage generally has to be done on paper, including your spouse's civil status details, and copies of your marriage certificate and identity documents. The administration then assigns your spouse a tax number.
Important: even if your spouse has never had any dealings with the French tax system, for instance, they still live in India, you're still required to declare your marital status accurately. Update changes within 60 days where possible; leaving it stale is a common, easily avoidable mistake.
If you have income sourced in India, the general principle is:
Don't assume that because tax was already paid in India, you don't need to declare the income in France.
When you are resident in France and receive foreign-source income, you need to look at the France–India tax treaty and the nature of the income to determine how it is treated. French tax guidance specifically says that foreign-source income should be considered in light of the applicable tax treaty, which determines whether the income is taxable or exempt in France and how double taxation is eliminated.
Depending on the income, you may need to use Formulaire 2047 in addition to your main French return. Possible examples include:
salary;
pension;
interest;
dividends;
rental income;
capital gains;
self-employment or business income.
The treatment is not identical for every type of income. The France–India treaty may provide for mechanisms such as a tax credit or exemption with the income still taken into account for determining the applicable rate.
Keep your Indian tax documents. If you have paid tax in India, keep evidence such as:
Form 16;
TDS certificates;
Indian tax return;
tax payment records;
bank statements;
documents supporting the underlying income.
And remember:
Tax paid in India does not automatically mean "nothing to declare in France."
The declaration and the elimination of double taxation are two separate questions.
This is one of the most commonly missed obligations for people who have recently moved to France. If you are a French tax resident, certain accounts and financial arrangements held outside France may need to be declared. This can include accounts held with Indian banks.
The relevant declaration is generally Formulaire 3916 / 3916-bis, depending on the type of account or financial arrangement.
The French tax administration also notes that some foreign financial services can trigger the foreign-account declaration requirement depending on where the account is domiciled and how it is used. Don't assume an account can be ignored because:
the balance is small;
you rarely use it;
it is an old account;
you are not earning interest;
you opened it before moving to France.
The rules and exceptions can be technical, so check the current French guidance for your specific account.
What about Indian accounts?
If you still have accounts in India after moving to France, check whether they fall within the French foreign-account declaration requirements. This is particularly relevant for people who retain:
savings accounts;
NRE/NRO/FCNR accounts;
investment accounts;
other financial accounts in India.
Keep the account details and statements accessible before starting your French return.
Owning property in India does not automatically mean that the property itself is taxed in France every year. But the income or gains associated with that property may have French reporting or tax consequences, depending on your residency, the type of income and the applicable treaty rules.
For example:
Rental property: If you receive rental income from property in India, you may have French reporting obligations in addition to your Indian obligations. The France–India treaty needs to be considered to determine how the income is taxed and how double taxation is relieved.
Property used only personally: A property that generates no rental income is a different situation. However, property can become relevant for other French tax purposes, including IFI (Impôt sur la Fortune Immobilière) in situations where the applicable conditions and thresholds are met.
If you sell the property: Keep your:
purchase documents;
renovation records;
sale documents;
Indian tax calculations;
evidence of taxes paid.
A property sale can involve capital-gains and treaty questions that are much more complicated than simply reporting the sale price.
France applies a progressive income-tax scale with different rates applied to different portions of taxable income, taking the household's tax parts into account. The exact thresholds are adjusted over time.
As a recent reference point, for income earned in 2025 and declared in 2026
Up to ~€11,600 --- 0%
~€11,600 – ~€29,600 --- 11%
~€29,600 – ~€84,600 ---- 30%
~€84,600 – ~€182,000 --- 41%
Above ~€182,000 --- 45%
Don't use these figures for a future return without checking the current year's barème.
The important concept is that being in a 30% tax bracket does not mean all of your income is taxed at 30%. The progressive system applies different rates to different portions of taxable income.
Salaried income may also benefit from an automatic deduction for professional expenses, subject to the applicable rules and limits, unless you choose the frais réels option.
Some common French mechanisms include:
PER (Plan d'Épargne Retraite): contributions may be deductible from taxable income, subject to eligibility and limits.
PEA (Plan d'Épargne en Actions): a French investment wrapper with specific tax advantages after the required holding period.
Charitable donations: eligible donations can provide a tax reduction, subject to the applicable rules.
Home services: eligible expenses for services at home may qualify for a tax credit, subject to conditions and limits.
Certain support payments: in some circumstances, financial support paid to a dependent parent or other qualifying relative may be deductible.
These are not automatic tax-saving tricks. Eligibility, ceilings and documentation requirements matter.
For someone with income or family ties in India, the cross-border consequences should also be checked before assuming that a deduction available in France will work in exactly the way you expect.
This deserves its own section because it is one of the situations where the France–India calendar mismatch becomes particularly important.
If you moved from India to France during the year, don't automatically assume: "I was in India for part of the year, so that income belongs only to India."
Your tax residency and the applicable treaty rules determine how the situation is treated.
You may need to look at:
your exact move date;
where your home was;
where your family lived;
where you worked;
where your economic interests were;
income earned before and after the move;
taxes already paid in India;
the France–India tax treaty.
France has specific rules for people arriving in or leaving France, and the treatment can differ depending on whether you become or cease to be a French tax resident during the year.
This is one situation where professional advice can be particularly valuable.
Income tax is not the only thing that can change when your circumstances change. Depending on your situation, also think about:
change of address;
marriage or PACS;
birth of a child;
divorce or separation;
starting or stopping self-employment;
receiving unemployment benefits;
moving abroad;
acquiring or selling property;
opening foreign financial accounts.
The tax administration and other French authorities don't necessarily receive every change from each other automatically. If something significant changes in your life, check whether you need to update your tax information as well.
Confusing the Indian financial year with the French calendar year.
Treating an Indian Form 16 or tax return as if it covers exactly the same period as the French return.
Forgetting a foreign account because the balance is small.
Assuming that income already taxed in India doesn't need to be considered in France.
Not updating family status after marriage, PACS, birth or separation.
Assuming 183 days is the entire test for tax residency.
Trusting pre-filled French income figures without checking them.
Forgetting that foreign income may require additional forms.
Missing the annual filing deadline.
Losing supporting documents such as tax certificates, bank statements and proof of foreign tax paid.
Assuming that a tax treaty means you don't have to declare the income.
Treating a move between India and France as a simple change of address rather than a potential tax-residency event.
Before opening your French tax return, ask yourself:
France
What was my French tax-residency status during the year?
What income did I receive in France?
Was any income already pre-filled?
Did I receive unemployment benefits?
Did my marital or family situation change?
Did I have childcare or other potentially deductible/creditable expenses?
India
Did I receive salary or other income from India?
Did I receive interest or dividends?
Did I receive rental income?
Did I sell or buy property?
Did I pay tax in India?
Do I have Form 16/TDS or other supporting documents?
Foreign accounts
Do I still have bank accounts outside France?
Did I open or close any foreign accounts during the year?
Do I have foreign investment or insurance products that need to be considered?
📅 Most importantly
Am I comparing the same tax period? Remember:
France = January → December
India = April → March
That simple distinction can prevent a lot of confusion.
This covers the framework most Franco-Indian filers need to get started — but real situations rarely stay simple for long.
Split-year moves, dual tax residency, remote work, stock options, multiple foreign accounts, property sales, pensions, investment income, business income, or a first joint filing after marriage can all change the analysis.
The France–India tax treaty can also produce different results depending on the type of income, so there is no single rule that applies to everything earned in India. If your situation touches any of these areas, it's worth getting professional advice before filing rather than after.
And remember: French tax rules, thresholds, forms and deadlines can change. Always check the current year's official information on impots.gouv.fr before submitting your return.
This article covers the general framework and process for French tax filing and is not a substitute for personalized tax advice. Exact dates, thresholds, forms and limits are set or adjusted by the French administration and legislation each year.