Tax return for 2025

Did you know that many taxpayers are expected to submit their income tax returns to the Tax and Customs Administration before 1 May 2026, especially if they still need to pay additional income tax for 2025. By filing their return early, they avoid having to pay tax interest to the Tax and Customs Administration in addition to the income tax amount.

An alternative is to request a provisional income tax assessment for the amount still payable from the Tax and Customs Administration as soon as possible. If the tax assessment for 2024 is dated later than June 2025, you will also need to pay tax interest.

The Tax and Customs Administration has already filled in many details on your income tax return for 2025. It is important that you check these details carefully. If any changes or additions need to be made, let the Tax and Customs Administration know by filing a new tax return online.

You may be entitled to a prompt payment discount from the Tax and Customs Administration in certain cases if you pay the entire income tax amount owed in one go before the first payment date. Be aware, though, that in 2025 this applies to provisional income tax assessments for 2024 (which you can also pay in instalments) and not, for instance, to the income tax assessment for 2024, which you only receive after filing your tax return for that year.

Fraudsters regularly send letters or messages by WhatsApp, text message or email claiming to be the Tax and Customs Administration. While it appears as though these are sent by the Tax and Customs Administration, this is not always the case.

If you are unsure whether a message has been sent by the Tax and Customs Administration:

• Log in to your personal tax account on the website of the Tax and Customs Administration: Mijn Belastingdienst.
• If the message is shown on there, you can be certain that the Tax and Customs Administration sent it.
• If you plan to transfer funds to the Tax and Customs Administration, always check the bank account number against the bank account numbers on this list.
• The Tax and Customs Administration will never ask you to share your personal details or transfer money by email, WhatsApp or text message or via a link.
• Report a suspicious message to the Tax and Customs Administration.

Ensure you know the 5 security rules for banking. You can read more about secure banking here.