The French tax year runs from 1 January to 31 December.
Husbands and wives or partners of a PACS must file joint returns (except the year of marriage/the year the PACS is signed, where spouses/partners can opt to file separate tax returns for the whole year). Otherwise, separate filing status is not permitted, except under strictly limited circumstances.
French resident tax returns are based on calendar-year income and must be filed, in principle, by mid-May of the following year (the exact filing deadline is confirmed each year by the French tax authorities).
The taxpayers whose main home is equipped with access to the Internet should file their tax return online on the government website.
As of 2019, this obligation (bond) concerns all taxpayers, whatever their income.
A fixed EUR 15 fine by tax return will be applied after two breaches, except in particular cases (e.g. the elderly who have no access to the Internet).
Payment of tax
As of 1 January 2019, for French resident taxpayers, a WHT system is implemented. The scope of income subject to the new WHT system is very wide and covers most categories of income: employment income, pensions, replacement income, annuities, self-employment income (industrial and commercial, non-commercial, agricultural), and rental income.
For taxpayers who have already filed a French tax return, the French tax authorities calculate the applicable WHT rate to be applied on employment income or the amount of monthly instalments to be paid by taxpayers based on the last tax return submitted by the taxpayers. The WHT rate or the instalment amount is revised each year in September after the filing of the annual tax return. The tax rate applied is an average tax rate calculated for the household. It is possible to request the application of an individualised tax rate for each spouse. It is also possible to request a modulation of the applicable WHT rate in case of change of personal situation or income.
When a tax rate is not available (e.g. for taxpayers who have never filed a French tax return), employers apply a neutral tax rate on compensation, depending on the level of income. It is possible to request a personalised WHT rate by filing a form (2043 Form).
Considering the risk of potential penalty, specific advice from a tax advisor is required to request or adjust the applicable WHT rate.
The filing of an annual tax return is still required (proposed simplified filing under consideration in some cases - to be confirmed after adoption of the Finance Bill for 2020). If the final tax liability per the annual tax return is higher than the withholdings, the taxpayer is required to pay the balance to the authorities, in principle spread from September to December. If the tax withheld is more than the computed tax on the tax return, the French authorities will refund the difference.
For non-resident taxpayers deriving income from employment and professional activities exercised in France, a WHT mechanism is applied; tax at flat rates of 0%, 12%, and 20% is withheld at source for employment compensation. An annual income tax return is required if the income subject to WHT falls into the 20% WHT bracket and additional tax may be due. A reform of the taxation of non-resident taxpayers is planned, but the application of the reform would start from 1 January 2021 (exact date to be further confirmed).
In addition, there is a tax withholding obligation on French-source stock options (granted from 20 June 2007) and free share award gains realised as of 1 April 2011 by non-resident taxpayers of France.
Other French-source income may also be subject to WHTs and annual reporting.
Tax audit process
The French Tax Administration can verify the accuracy and correctness of the tax return and can provide a control on the document provided. The French Tax Administration analyses the consistency between declared income, the financial situation, and the household's lifestyle.
When disbursements exceed receipts, the difference is considered hidden income unless the taxpayer responds satisfactorily to a request for clarification or justification.
Statute of limitations
The statute of limitations in France is, in general, for three years (period called délai de reprise). It has been extended for one year for the year 2018 ('tax holiday year').