Tax season is here and these are the key tax filing dates to remember this October
| TAX HEAD | RETURN | PERIOD | PAYMENT & FILING DATE |
| Dividend Withholding Tax | DWT | September 2023 | 14th October 2023 |
| Professional Services Withholding Tax (PSWT) | F30 | September 2023 | 14th October 2023 |
| PAYE/PRSI/USC/LPT | Monthly Deductions | September 2023 | 23rd October 2023 |
| PAYE/PRSI/USC/LPT | Quarterly deductions | July – September 2023 | 23rd October 2023 |
| Relevant Contracts Tax (RCT) | RCT Monthly Return | September 2023 | 23rd October 2023 |
| Relevant Contracts Tax (RCT) | RCT Quarterly Return | July – September 2023 | 23rd October 2023 |
| VAT | Monthly VAT3 & Return of Trading Details | September 2023 | 19th October 2023 |
| VAT | Annual VAT3 & Return of Trading Details | October 2022 – September 2023 | 19th October 2023 |
| VAT | IOSS Monthly Return | September 2023 | 31st October 2023 |
| VAT | Quarterly OSS Return | July – September 2023 | 31st October 2023 |
| Corporation Tax | Preliminary tax | Accounting periods ending between 1st and 30th November 2023 | 1st – 23rd October 2023* |
| Corporation Tax | Corporation Tax Return (Form CT1) | Accounting periods ending between 1st and 31st January 2023 | 1st – 23rd October 2023* |
| Corporation Tax | Pay balance due | Accounting periods ending between 1st and 31st January 2022 | 1st – 23rd October 2023* |
| Corporation Tax | Returns of Third-Party Information (Form 46G) | Accounting periods ending between 1st and 31st January 2022 | 1st – 31st October 2023 |
| Income Tax | Preliminary Tax 2023, Payment and Return for 2022 | 2022 | 31st October 2023 |
| Capital Gains tax | Return of Capital Gains | 2022 | 31st October 2023 |
| Capital Acquisitions Tax (CAT) | Return and payment of CAT due | Valuation dates between 1 September 2022 and 31 August 2023 | 31st October 2023 |
