Filing Deadlines
M-forms, P-forms, dates and how to file your return on time.
Information only, not tax or legal advice
Filing Deadlines
Guide
Dutch tax filing deadlines: when (and whether) you must file
Dutch income-tax deadlines for the 2025 return: the 1 May filing date, when you must file vs. file voluntarily, the M-form for your first year, requesting an extension, and how to avoid penalties and tax interest.
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Filing Deadlines
Checklist
Filing your Dutch tax return as an expat
M-form vs P-form, deadlines and how to file.
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