Tax · Deadline
The document that tells you what you owe (or are owed) arrives across late July and August. There's a short correction window if the figures look wrong — and the day it lands matters more than the day it's due.
Your avis d'imposition — the formal statement of your income tax position for the year — is issued across late July and August. It appears in your secure space on the tax portal first, with a paper copy following for those who haven't gone digital.
There is a correction window in mid-August. If you filed online and later spot an error — a missed deduction, a wrong figure, a credit you forgot — you can usually amend through the online declaration service during this window without any drama. Miss it and putting things right becomes a slower, more formal affair.
Our take
Read it the day it arrives, not the day it's due. If something's off, the mid-August window is your one clean chance to fix it without a fight. Diarise a reminder to actually log in — that's the whole trick.
Sources & where to check
impots.gouv.fr — the official tax portalPimpernel explains what changes mean in practice. It isn't legal, tax or immigration advice — for your own situation, check the official source above or speak to a qualified professional.