A €29,000 tax reassessment for a threshold crossed unknowingly — the flat-tax trap
Losing the right to France's flat-tax option is automatic, but the regularisation is not. The two-year lag on reference income makes this trap treacherous.
A €29,000 tax reassessment. For a threshold crossed without knowing it.
I'm sharing because this trap can catch many French micro-entrepreneurs.
The "versement libératoire"
It's simple: URSSAF (social security) withholds a % of your revenue, and that counts as income tax paid. Painless.
But it comes with two conditions:
- A reference tax income (RFR, from year N-2) below a threshold: €26,070 per household unit for 2023.
- Revenue (excl. VAT) below the micro-regime ceilings: €77,700 for services, €188,700 for sales.
Where it breaks
In 2021, my RFR went over the threshold, so I lost the right to the flat-tax option for 2023.
The trap is right there: losing the right is automatic — nothing else is.
URSSAF kept withholding. The tax office, meanwhile, put my revenue back under the standard progressive scale.
What I take away
- Watch your RFR every year. The two-year lag is what makes it treacherous.
- If you fall out of the scheme, it's on you to cancel the option with URSSAF and file under the standard regime.
- "Automatic" only applies to losing the right. The payment side is yours to regularise.
A quick look at your latest tax notice today can save you a nasty surprise tomorrow!