Form 2042 C - Fill, Sign and Download | French Tax Return 2025
ZenDocs is not a law firm and does not provide legal advice.
ZenDocs is not a law firm and does not provide legal advice.
Reviewed by Zendocs Team. Updated 23 October 2026.
Form 2042 C is the supplementary income tax return that goes with the main Form 2042. It lets you declare income and expenses that do not fit in the main form.
The form is divided into sections for salaries and employee share-based gains, investment income, capital gains and miscellaneous gains, rental income, and various charges and deductions. Results from annex forms, such as the gains calculated on Form 2086 for digital assets, are also carried onto this form.
Your name and address as on the main return, plus the income statements you received for 2025, for example from your employer, bank or broker, and records of deductible expenses.
It is filed together with Form 2042 in the same annual campaign, within the same deadlines. Online filing is mandatory unless your main home has no internet access or you cannot file online.
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