French VAT, Corporation Tax and Advance Payments 2026: Managing Your Compliance Calendar

Updated May 2026 — Most avoidable tax penalties we see in client files do not stem from miscalculation. They come from a failure to distinguish between obligations that run on entirely different timetables. Monthly VAT returns, quarterly corporation tax (IS) advance payments, the IS balance payment and the annual tax return all coexist in the calendar of any French SME — but each follows its own logic, its own forms and its own consequences for non-compliance.

In brief: French VAT is declared monthly via form CA3 (standard real regime) or annually via form CA12 (simplified regime with two semi-annual advance payments). Corporation tax is paid in four quarterly instalments calculated on the prior year's IS liability (Article 1668 CGI), followed by a balance payment after year-end. The annual tax return (form 2065) is a third, separate obligation. Confusing these flows exposes a company to surcharges of 5% to 10% and monthly late interest of 0.2%.

The table below covers the key deadlines for a company with a 31 December year-end.

Exact dates should be confirmed with your local tax office (SIE) or on impots.gouv.fr, as the official calendar is published annually.

The VAT regime determines both the filing frequency and the specific forms required. The framework is set out in Article 287 of the CGI (General Tax Code).

Standard real regime (régime réel normal)#

Companies exceeding the simplified regime thresholds file a monthly CA3 return. An option for quarterly filing is available if the net annual VAT liability falls below €4,000. Payment is made electronically between the 15th and 26th of the month following the return period, depending on the date assigned in your professional account on impots.gouv.fr.

This regime requires robust monthly bookkeeping: VAT collected must be reconciled with invoiced turnover, and input VAT verified invoice by invoice before each return.

Simplified regime (régime simplifié d'imposition — RSI)#

SMEs within the applicable turnover thresholds file a single annual CA12 return, generally in July for companies with a 31 December year-end. Two advance payments are made during the year — in July (55% of the prior year's net VAT) and December (40%) — with the final balance or credit regularised on the CA12. If activity slows significantly, these advances can be reduced, but any underestimate must be corrected on the following CA12.

Franchise en base (VAT exemption threshold)#

Below certain turnover thresholds, micro-enterprises and some liberal professionals do not charge VAT and have no filing obligation. The risk: exceeding the tolerance threshold during the year triggers immediate entry into the standard real regime, which can catch businesses off guard if they have not prepared monthly reporting processes.

Form 2571 is the operational tool for managing IS advance payments. It also allows a downward adjustment when a company anticipates lower profits than the prior year. Form 2572 documents the final settlement, netting off advances already paid.

Under Article 1668 CGI, each quarterly IS advance equals 25% of the IS assessed on the most recently closed financial year. The four payments are then compared against the actual IS liability calculated when the annual return is filed.

Worked example — SME on the standard regime, FY 2025:

• Taxable profit 2025: €180,000
• IS 2025: 15% × €42,500 + 25% × €137,500 = €6,375 + €34,375 = €40,750
• Each 2026 advance: €40,750 × 25% = €10,187
• Schedule: €10,187 in March, June, September, December

If the 2026 result is expected to be lower than 2025, the company can reduce its advances by filing a revised form 2571. This is a legitimate and frequently underused cash flow lever: companies that lock in high advances based on an exceptional prior year tie up capital unnecessarily for five to six months.

French tax penalties are automatic and applied from the day after the filing or payment deadline.

• 5% surcharge on the amount due for late filing or payment (Article 1731 CGI)
• 10% surcharge if the return remains unfiled 30 days after a formal notice
• 0.2% monthly late interest (2.4% per year) on outstanding amounts (Article 1727 CGI)
• 40% surcharge where deliberate non-compliance is established during a tax audit
• 80% surcharge in cases of fraudulent misrepresentation

A two-month delay on a €10,000 IS advance generates roughly €500 in surcharges and €40 in late interest — costs that a simple calendar reminder eliminates entirely.

The simplified regime is widely seen as an administrative relief. In terms of filing frequency, it is. But it concentrates a specific risk we observe regularly in client files: mid-year threshold breach.

When a company in the simplified regime exceeds the relevant turnover threshold during the year, it switches to the standard real regime, in some cases with immediate effect. The company must then implement a monthly CA3 filing process from one day to the next, often without having set up the necessary bookkeeping infrastructure. Late adaptation is one of the most common triggers for VAT adjustments during tax audits.

A recurring confusion — even among well-organised companies — is treating IS as a single flow. It is in fact three separate obligations:

1. IS advance payments (form 2571): four quarterly payments based on prior year IS
2. IS balance payment (form 2572): the difference between actual IS and advances paid, due on 15 May 2026 for a 31 December 2025 year-end
3. Annual tax return — form 2065: the declaration of results with its annexes (forms 2050 to 2059 for the full real regime, form 2033 for the simplified regime), filed electronically via the EDI-TDFC procedure, generally by 20 May 2026 for a 31 December year-end (the standard three-month deadline plus a 15-day extension for EDI users)

These obligations follow a strict sequence: advances fund the current year budget, the balance regularises the gap, the return documents the result. A late return delays the balance calculation and can trigger an automatic taxation procedure.

• The progressive rollout of mandatory e-invoicing in France will progressively change how VAT-collected data flows to the DGFiP. The CA3 form is not being abolished, but the prefilling of return data will evolve — monitor the official deployment calendar for your sector.
• Downward modulation of IS advances is a legal tool that remains underused. Many SMEs continue paying advances sized on an exceptional prior year, unnecessarily tying up cash for months.
• For fiscal integration groups, IS advance payment rules differ from standalone entity rules — the parent company files consolidated advances, which must be clearly separated from any non-integrated subsidiary obligations.

For foreign-owned French entities or subsidiaries, a few additional points are worth noting. The VAT filing obligations are identical to those of French-owned companies. However, the practical challenges are often greater: accounting cut-offs may not align with the French monthly filing rhythm, and the EDI-TDFC e-filing requirement means you need a compliant accounting software or a French-qualified intermediary with EDI accreditation.

The IS advance payment calendar is also independent of any withholding tax or dividend payment schedule. Companies that confuse the French IS calendar with their parent group's tax instalment schedule regularly miss March and June deadlines.

• Compare current-year projected profit against the prior year that served as the advance base
• Decide whether to maintain, increase or reduce the IS advance using form 2571
• Confirm that the CA3 for the completed month has been filed and paid
• Verify that supplier invoices received are recorded (input VAT)
• Check that no out-of-scope or exempt transactions have been mistakenly subjected to VAT
• Identify any intra-community transactions and confirm their VAT treatment

VAT, IS and advance payment obligations form an interdependent system: a delay on one can generate penalties on the others. When deadlines are mapped clearly and connected to your cash flow forecast, French tax compliance becomes a management tool rather than a constraint.

This article is published for information purposes only. It does not constitute personalised tax advice and does not replace analysis of your specific situation by a qualified professional. Tax rules may change: confirm exact dates with your local tax office (SIE) or at impots.gouv.fr.