Article R2191-11 of the French Public procurement code
Repayment of the advance is deducted from the sums due to the contractor, at a rate and in accordance with the procedures laid down in the terms of the contract, by deduction from the sums due by way of instalments, final partial payment or balance. If the contract is silent, the advance is repaid in instalments, taking into account the amount of the advance granted and the sums still due…