Hand-in help income tax available & deadlines

The new tax season has started. The 2025 personal income tax submission guide is now available — we’re ready to get started!

Are you dreading filing your tax return? Or are you feeling overwhelmed by the information you need to gather? The personal income tax submission guide is here to help.

The submission guide provides clear insight into the information we need to prepare your tax return. The document contains a series of questions. If a question applies to you, it will clearly indicate which documents or details we require.

We ask you to complete the submission guide and submit it to us.
You can find it on the Lupacompany website under ‘For clients’, or via this link.

Personal income tax submission guide 2025: submission deadlines

Please note: the 2025 personal income tax return for non-resident taxpayers must be submitted to the Dutch Tax Authorities by 1 May 2026. In previous years, the deadline was 1 July — this is therefore two months earlier.

For clients for whom we request an extension, the filing deadline is 1 May 2027. However, we recommend submitting your tax return as soon as possible to reduce the risk of tax interest.

Read more about the extension scheme here.