Tax Deadlines for September 2025 – Monthly Returns & Advance Payments
The General Directorate of Taxes (DGI) announced yesterday the tax calendar for September 2025, which includes five deadline dates for filing monthly declarations and advance payments for individuals, corporations, and businesses.
Note: The dates listed correspond to the last day of the legal filing period. The DGI strongly recommends submitting your declarations well before the deadline to avoid congestion at financial counters or overload of the online filing system.
Key Filing Deadlines
| Date (2025) | Who Must File | What Must Be Filed |
|---|---|---|
| September 15 | Individuals (persons physiques) | Monthly tax declaration |
| September 22 | Corporations registered in the remote declaration & payment system | Monthly tax declaration |
| September 25 | Individuals (persons physiques) | Second advance‑payment (acompte provisionnel) declaration |
| September 29 | Corporations not using the remote declaration & payment system | Monthly tax declaration |
| September 29 | Corporations (persons morales) | Second advance‑payment (acompte provisionnel) declaration |
Why File Early?
- Prevent bottlenecks at physical tax offices.
- Avoid system slowdowns or crashes on the online portal.
- Stay compliant and reduce the risk of penalties.
For more information, visit the DGI website or contact your tax advisor.
