We summarize below the submission deadlines for corporate tax returns in all Swiss cantons for fiscal year 2024*. Please note that we do not accept any liability for this document and that only those deadlines that are officially communicated by local authorities are applicable. Please double check with your local tax authorities the deadline applicable to your canton.
| Canton | Deadline | First extension | Second extension |
|---|---|---|---|
| Aargau (AG) | 30.06.2025 | 31.12.2025 | |
| Appenzell Inner-Rhodes (AI) | 31.05.2025 | 30.11.2025 | |
| Appenzell Outer-Rhodes (AR) | 30.06.2025 | 31.12.2025 | |
| Basel-Country (BL) | 30.06.2025 | 31.08.2025 | |
| Basel-City (BS) | 30.06.2025 | 30.09.2025 | 31.12.2025 |
| Bern (BE) | 31.07.2025 | 15.09.2025 | 15.11.2025 |
| Fribourg (FR) | 31.08.2025 | 31.12.2025 | |
| Geneva (GE) | 30.04.2025 | 31.07.2025 | 30.09.2025 |
| Glarus (GL) | 30.06.2025 | 31.12.2025 | |
| Grisons (GR) | 30.09.2025 | 31.12.2025 | |
| Jura (JU) | 16.08.2025 | 31.10.2025 | |
| Lucerne (LU) | 31.08.2025 | 30.11.2025 | |
| Neuchâtel (NE) | 31.03.2025 | 30.04.2025 | 31.10.2025 |
| Nidwald (NW) | 30.06.2025 | 31.12.2025 | |
| Obwald (OW) | 31.07.2025 | 31.03.2025 | |
| St. Gallen (SG) | 30.06.2025 | 31.12.2025 | |
| Schaffhausen (SH) | 30.09.2025 | 31.12.2025 | |
| Solothurn (SO) | 30.06.2025 | 31.10.2025 | 30.11.2025 |
| Schwytz (SZ) | 31.07.2025 | 31.12.2025 | |
| Thurgovia (TG) | 30.06.2025 | 31.12.2025 | |
| Ticino (TI) | 30.06.2025 | 31.01.2026 | |
| Uri (UR) | 31.07.2025 | 31.12.2025 | |
| Vaud (VD) | 12.09.2025 | 13.10.2025 | |
| Valais (VS) | 30.06.2025 | 31.10.2025 | 31.12.2024 |
| Zug (ZG) | 30.09.2025 | 30.06.2026 | |
| Zurich (ZH) | 30.09.2025 | 30.11.2025 |
*Those deadlines are based on dates published by the respective tax authorities in September 2024.
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