How to File Your Dutch Tax Return as an Expat (2026 Guide)

Short answer: log in to Mijn Belastingdienst with DigiD, open the return for the right year, check the pre-filled figures against your own documents, add what the Belastingdienst cannot know (foreign income and assets, some deductions) and submit. The main expat-specific decisions are which return you need, how box 3 treats your foreign savings, and whether the 30% ruling is reflected correctly.

This is our single step-by-step filing page. For how the Dutch system works in general (tax residency, the three boxes, the 30% ruling), start with the Dutch tax system guide. For the documents list, see the tax return checklist, and for the dates of the 2027 filing season, the tax deadline 2027 checklist. Rules and amounts below come from belastingdienst.nl, checked on 5 October 2026, unless a different source is named.

Which return do you need?

The Dutch tax year is the calendar year, and you always file for the previous year. In spring 2027 you file for tax year 2026.

The M-return in one paragraph. It covers two periods. For the period you lived in the Netherlands you report your income and assets in and outside the Netherlands; for the period you lived abroad you report only Dutch income and Dutch assets. For that foreign period you may count as a qualifying non-resident taxpayer (kwalificerend buitenlands belastingplichtige) if you lived in the EU, EEA, Switzerland or the Caribbean Netherlands and meet the conditions, which gives access to more deductions; it is not a free choice. The deadline is the date in your invitation letter. If you ordered the form yourself because you expect a refund, the 2025 M-return has to be in before 1 January 2030. Our M-form guide goes through it field by field, and the C-form guide covers the non-resident return.

Do you have to file at all? If you received an invitation (aangiftebrief or a message in Mijn Belastingdienst), yes. Without one, you must still file if you would owe more than the assessment threshold: for the 2025 return the Belastingdienst asks you to file before 14 July if you would owe €58 or more (otherwise you can get a fine), and to file if you would get back €19 or more. If you receive income-dependent benefits such as toeslagen and you, your partner or your minor children have more than €37,395 in assets (€74,790 with a fiscal partner), you must also file (belastingdienst.nl, checked 5 October 2026). You can file up to 5 years back if you were not invited. Freelancers who run a business have their own section in the return, see the freelancer tax filing guide.

When is the Dutch tax return due?

The Dutch income tax return for the previous year opens online on 1 March and, if you were invited to file, is due before 1 May; for tax year 2026 that is before 1 May 2027. File before 1 April and the Belastingdienst says you will hear from it before 1 July. A self-requested extension (uitstel) runs to 1 September, and an M-return follows the date in your invitation letter.

In recent years the online return opened on 1 March with a 1 May deadline. The Belastingdienst confirms the dates for each filing season in early spring, and the date in your own invitation letter is the one that counts. An extension is free but does not stop tax interest; our extension (uitstel) guide explains the routes, including what to do if you use a tax adviser.

Before you start

You need a working DigiD with the app (see our DigiD guide); if you cannot use DigiD, someone can file for you with an authorisation, see DigiD machtiging. Then gather:

• Jaaropgaaf from every employer and benefit payer (UWV, SVB) in the tax year. What each box means is in our jaaropgaaf explainer.
• Balances on 1 January of the tax year for every Dutch and foreign bank account, investment account and crypto wallet, converted to euros at the rate on that date.
• Mortgage annual statement and the WOZ value if you own your home.
• Foreign income: payslips, foreign tax certificates, foreign pension and rental statements.
• Receipts for deductions: healthcare costs you paid yourself, donations to ANBI charities, partner alimony.
• Your 30% ruling decision (beschikking) if you have the ruling, for the start date and period.
• Your fiscal partner’s details, because fiscal partners can divide certain items between them.

The full list, grouped by situation, is in the tax return checklist.

Step by step in Mijn Belastingdienst

Step 1: log in and open the right year

Go to mijn.belastingdienst.nl, log in with DigiD and open the income tax return (aangifte inkomstenbelasting) for the tax year. If you have a fiscal partner, you can fill in both returns in one session, which makes it easier to divide shared items such as mortgage interest and box 3 assets; our fiscal partner guide explains who counts as a partner.

Step 2: check the pre-filled data

The Belastingdienst pre-fills the return (vooraf ingevulde aangifte) with data it already has, such as salary and benefits, Dutch bank accounts and loans. That data is usually accurate for Dutch salary and Dutch accounts, and incomplete for anything foreign. Compare each figure with your own documents:

• Salary and wage tax withheld against each jaaropgaaf, especially if you had a second employer or changed jobs during the year.
• Your address and the period you lived there.
• Dutch bank balances on 1 January.
• Mortgage interest and WOZ value, if you own your home.

Pre-filled data is a suggestion, not a confirmation. You sign for the return, so correct anything that is wrong.

Step 3: add foreign income

As a resident taxpayer you report worldwide income, including income that a tax treaty lets another country tax. The return then asks for the treaty relief (voorkoming van dubbele belasting), so you do not pay twice. Typical items: salary for days worked abroad, foreign rental income, foreign pensions, foreign dividends and interest (with the foreign tax withheld). Which country taxes what depends on the treaty; see our double taxation treaties guide, and if you are American, the US-Netherlands tax treaty explainer, because US filing obligations continue regardless.

Step 4: box 3, savings and investments

Dutch banks report your Dutch balances; foreign accounts you add yourself. Enter every account and investment at its value on 1 January of the tax year, not the date you file. Crypto counts too, see our crypto tax guide.

For tax year 2026 the Belastingdienst uses a tax-free allowance of €59,357 per person (€118,714 for fiscal partners), deemed returns of 1.28% on bank savings (provisional), 6.00% on other assets and 2.70% on debts (provisional), and a rate of 36%. How the calculation works, and why your foreign savings matter, is in our box 3 guide. If your real return was lower than the deemed return, you can report your actual return instead (the counter-evidence route, tegenbewijsregeling); our tax deadline 2027 checklist explains when that pays off. A system that taxes actual returns has been proposed but is not law: on 30 June 2026 the Eerste Kamer decided to hold its vote until it has dealt with an amending bill (novelle) announced by the government (eerstekamer.nl).

Step 5: deductions

The return asks for deductions in a separate section. The ones expats most often have:

Business costs belong in the freelancer section, not here.

Step 6: submit and keep the proof

The summary shows the calculated refund or amount due before you submit. If the result surprises you, go back through the sections rather than submitting and hoping. After submitting, download the PDF of the return and keep it with your documents; the Belastingdienst can still correct a return years later (see below).

How does the 30% ruling affect your Dutch tax return?

The 30% ruling is applied by your employer through payroll, so your Dutch tax return starts from a jaaropgaaf that already shows taxable salary after the tax-free allowance. You do not claim the 30% ruling yourself on the return; you check that the months and the salary match your ruling decision. Since 1 January 2025 the ruling no longer keeps foreign savings out of box 3, except for a transitional group that can choose partial non-resident status up to the 2026 return. What to check:

1. The period. If the ruling started or ended during the year, or you changed employer, the months covered should match your decision and payslips.
2. The percentage. It is a flat 30% for every month in 2025 and 2026. From 1 January 2027 the maximum falls to 27% unless the ruling was already applied to your salary on or before 31 December 2023, so a change shows up in the 2027 return, not the 2026 one. Details in the 30% ruling guide.
3. Partial non-resident status. This option, which kept foreign savings and investments out of box 3, was abolished on 1 January 2025. Only people whose 30% ruling was applied in the last wage period of 2023 can still choose it, at the latest for tax year 2026, so the return you file in 2027 is the last one. You have to tick it yourself. Who exactly qualifies is in our page on the end of partial non-resident status. If your ruling started in 2024 or later, it was never available to you.

What happens after you file

Timing of refunds, minimum amounts and what delays a payout are covered in detail in our tax refund guide.

File yourself or hire an adviser?

Filing yourself is realistic when you were in the Netherlands all year, had one Dutch employer, no business, modest or no foreign assets, and no complicated home or partner situation. The pre-filled return does most of the work, and the Belastingdienst publishes English information and phone numbers (see Belastingdienst in English).

An adviser is usually worth it when it is your arrival or departure year (M-return), you have income in more than one country, you are in the transitional group for partial non-resident status, you own property abroad, you have share options or RSUs, you are a US person, or you received questions or a correction from the Belastingdienst. How to pick one, and what to ask about fees, is in our guide to tax advisers for expats.

Common mistakes

1. Accepting the pre-filled return without checking it. Especially after a job change or a mid-year arrival.
2. Leaving out foreign bank accounts and investments. The Belastingdienst can issue an additional assessment for undeclared foreign income or assets up to 12 years later. Box 3 uses the value on 1 January.
3. Filing a standard return in the arrival or departure year. That year needs the M-return.
4. Assuming partial non-resident status still applies to you. Only the transitional group can choose it, and only up to tax year 2026.
5. Missing the deadline without an extension. Request uitstel before the deadline if you are not ready.
6. Entering net instead of gross figures. The return works from gross amounts on the jaaropgaaf.
7. Forgetting the knock-on effect on allowances. Toeslagen are based on your actual income; if your income was higher than the estimate, you may have to pay back. See toeslagen for expats.

Related guides

• Dutch tax system explained for expats: the overview this page builds on
• Dutch tax return checklist: the documents to gather
• Netherlands tax deadline 2027: dates for the next filing season
• Box 3 guide: savings and investments
• Holiday allowance and bonuses: why the withholding on them is often too high, and how the return corrects it
• Freelancer tax filing

This guide explains the process; it is not tax advice. Rules change every year and individual situations differ. Check belastingdienst.nl or a qualified adviser for your own case.