Dutch tax return (aangifte inkomstenbelasting) deadline: 1 May. Three-box system: Box 1 (income/housing, 35.75%/37.56%/49.5% in 2026), Box 2 (substantial interest, 24.5%/31%), Box 3 (investment assets, deemed return). 30% ruling for qualified expats reduces taxable income by up to 30% in 2026 (falling to 27% from 2027 for most holders; no 30/20/10 taper applies). M-form required for partial-year residents.
At a glance
Key Facts
Tax Year
Calendar year: 1 January to 31 December
Filing Deadline
1 May (standard); extension available to 1 September on request; M-form (partial-year) has separate deadline
Box 1 Rates
2026: 35.75% up to €38,883 (includes national insurance premiums below state pension age); 37.56% from €38,883 to €78,426; 49.5% above €78,426
30% Ruling
Qualified foreign workers: up to 30% of salary tax-free for up to 5 years (maximum 27% from 2027 unless the ruling was first used by 31 December 2023); allowance capped at 30% of €262,000 in 2026
Box 3
2026 deemed return: 6.00% on investments, 1.28% on bank savings (provisional), on net assets above €59,357 per person; taxed at 36% = ~2.2% a year on investments (~0.46% on savings)
Introduction
The Dutch income tax system uses a unique three-box structure (boxenstelsel) that separates different types of income and taxes them independently. For expats in the Netherlands, the most important feature is the 30% ruling (30% in 2026, reducing to 27% from 2027 for most holders) — a significant tax benefit for qualifying foreign workers that reduces the effective tax burden on employment income. Understanding which box applies to your income type, and how the 30% ruling interacts with it, is the starting point for any Dutch expat tax return.
This guide covers the Dutch tax boxes, the 30% ruling mechanics, the M-form for partial-year residents, how Box 3 taxes investment assets, and practical filing via the Belastingdienst portal.
Section 01
The Dutch Three-Box System
Box 1: Income from Work and Home
Box 1 is the main box for most taxpayers, covering: employment income; self-employment and business profits; home ownership imputed rent (eigenwoningforfait — typically 0.35% of WOZ value for primary residence); unemployment and disability benefits. 2026 rates: 35.75% on income up to €38,883 (includes national insurance premiums for residents under state pension age); 37.56% from €38,883 to €78,426; 49.5% above €78,426. Box 1 losses from business can offset Box 1 income from employment in the same year or be carried forward.
Box 2: Substantial Interest in Companies
Box 2 applies to dividend income and capital gains from substantial shareholdings (5%+ interest in a company). 2026 rates: 24.5% on income up to €68,843; 31% above €68,843. Relevant for expats who own >5% of a foreign company, or shareholders of Dutch BVs. Box 2 income is separate from Box 1 — losses in one box cannot offset income in another box (with limited exceptions).
Box 3: Savings and Investments
Box 3 taxes the deemed return on investment assets (savings, investments, second homes, crypto, foreign property) above the threshold (€59,357 per individual in 2026). The 2026 deemed return is 6.00% on investments and other assets and 1.28% on bank savings (provisional), taxed at a flat 36% — giving an effective rate of approximately 2.2% on net investment assets annually. This operates as an annual wealth tax on investment assets. Key change: The Dutch Supreme Court found the original Box 3 system unconstitutional in 2021; a transitional regime applies from 2023 (taxpayers can now demonstrate a lower actual return); the government plans a new system taxing actual returns from 1 January 2028. The current transitional system uses category-specific deemed returns (low for savings, higher for investments).
Section 02
The 30% Ruling for Expats
The 30% ruling (30%-regeling) is one of the most significant expat tax benefits in Europe. It allows qualifying foreign workers to receive 30% of their salary as a tax-free expense reimbursement — effectively reducing the Dutch taxable income base by 30%.
Eligibility Requirements
Recruited from abroad (recruited while residing outside the Netherlands)
Specific expertise that is scarce in the Dutch labour market
Salary threshold: taxable salary above €48,013/year in 2026, excluding the tax-free allowance (€36,497 for under-30 workers with a master's degree)
Living more than 150km from the Dutch border before starting employment
2024 Reform: Taper Repealed, 27% From 2027
The 30%/20%/10% taper legislated for 2024 was repealed by the 2025 Tax Plan and does not apply. Under the rules now in force, the maximum tax-free allowance stays at 30% in 2025 and 2026 and falls to 27% from 1 January 2027, when a higher salary threshold also applies. Employees who started using the ruling by 31 December 2023 keep 30% and the current salary threshold. Since 1 January 2026 the allowance for all expats is calculated on salary of up to €262,000 (the WNT public-sector pay cap), a maximum tax-free allowance of €78,600 in 2026. The maximum duration remains 5 years.
Practical Example
Salary: €100,000 (2026, 30% ruling): €70,000 taxable. Box 1 tax on €70,000 after the general and labour tax credits: approximately €21,000. Without ruling: tax on €100,000 = approximately €37,300. Saving: approximately €16,300/year — a major benefit that makes the Netherlands attractive for high-earning international hires.
Partial Non-Resident Taxation
30% ruling holders could previously elect 'partial non-resident' status, treating Box 2 and Box 3 assets as if the taxpayer were non-resident — exempting most foreign investment income and assets from Dutch Box 3. This election was abolished from 1 January 2025. Only employees who used the 30% ruling before 2024 can still use it, under transitional rules, up to and including 2026.
Section 03
Filing the Dutch Return: Practical Guide
MijnBelastingdienst
The Belastingdienst (Dutch tax authority) online portal at mijnbelastingdienst.nl allows online filing. Much of the return is pre-filled from employer data, bank reports (Dutch financial institutions report to the Belastingdienst), and previous year's data. Foreign income and foreign assets must be manually added. The portal is available in Dutch and has partial English support — many expat apps (BlueTax, Expatax online tools) offer English-language filing connected to the portal.
M-Form (Migrant Form)
For the year you arrive in or depart from the Netherlands, you must file the M-form (Migrantenformulier) — a special paper form for partial-year residents. The M-form covers: your period of Dutch residency; your income during that period; any foreign income from the non-resident period; the 30% ruling if applicable from arrival date. M-forms cannot currently be submitted via the standard online portal — they must be submitted as a paper form or via a registered tax software provider. Note: many expats forget to file the M-form for their arrival year, missing out on prorated personal allowances and Dutch-specific credits.
DigiD
Filing online requires a DigiD (digital identity for Dutch government services). Registering requires a BSN (citizen service number) and a Dutch address. Newly arrived expats may need to file their first return using the paper M-form before obtaining a DigiD.
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How do I apply for the 30% ruling in the Netherlands?
The 30% ruling is applied for jointly by you and your employer using Form 'Verzoek loonheffingskorting vrije vergoeding' submitted to the Belastingdienst. The application should be submitted within 4 months of starting employment in the Netherlands — if submitted within 4 months, the ruling backdates to the start date; if later, it takes effect from the first day of the month following submission. Documents required: employment contract showing start date and salary; evidence of previous residence outside the Netherlands (foreign utility bills, foreign tax returns, foreign driving licence); employer's written request. Processing time: typically 6–12 weeks. If approved, your employer immediately adjusts payroll — 30% of gross salary becomes a tax-free expense allowance. Many expats use an expat tax firm to handle the application to ensure it's correctly submitted and documented.
Q
What is Box 3 and how does it affect expats with foreign investments?
Box 3 taxes the deemed return on savings and investment assets above €59,357 (per person; €118,714 for fiscal partners) in 2026. This includes foreign bank accounts, foreign shares, foreign property (second homes), and crypto assets — all must be declared on the Dutch return under Box 3. The deemed return system applies regardless of actual returns: if you hold €200,000 in savings earning 0.5%, you are still taxed as if you earned the deemed return rate on that amount. The effective burden is approximately 2.2% annually on investments above the threshold (6.00% deemed return × 36% in 2026; about 0.46% on bank savings). The partial non-resident election that let 30% ruling holders exclude most foreign assets from Box 3 was abolished from 2025 — only those who used the 30% ruling before 2024 can still use it, up to and including 2026. Foreign bank accounts must be declared; the Belastingdienst receives information from foreign banks via the Common Reporting Standard.
Q
Do I need to file a Dutch tax return if I only lived in the Netherlands for part of the year?
Yes — if you were a Dutch tax resident for any part of the year, you must file a Dutch return for that year. In the year of arrival or departure, you file the M-form (Migrantenformulier) which covers only your period of Dutch residency. During the non-resident period (before arrival or after departure), you may still have Dutch-source income to report (Dutch rental income, Dutch dividends, Dutch employment income) — these are reported separately as non-resident income. For your partial year of residency: Dutch personal credits (heffingskortingen) are prorated based on the number of months of residency. The standard deadline for M-forms is typically 1 July of the following year (check annually — the Belastingdienst may grant extensions). Don't skip the M-form — it often results in a refund due to over-withheld loonheffing (payroll tax).
Q
How are Dutch dividends from a BV taxed for expat owners?
If you own 5%+ of a Dutch BV (besloten vennootschap — Dutch private company), dividends and capital gains from that shareholding are taxed under Box 2. Box 2 rates for 2026: 24.5% on Box 2 income up to €68,843; 31% above €68,843. The BV itself pays 19% corporate tax on profits up to €200,000 and 25.8% above. Total effective rate on business profits paid as dividends: approximately 39–49% combined corporate + Box 2. This compares to Box 1 rates of 35.75–49.5% on salary drawn from the BV — so at lower profit levels, salary can be more tax-efficient. For expats who own a BV: the combination of salary, dividends, and pension contributions from the BV requires careful annual planning. The 30% ruling only applies to the employment income element, not to Box 2 dividends.
Q
What is the Dutch toeslagen (benefit) system and do expats qualify?
The Netherlands has a system of income-related government allowances (toeslagen) administered by the Belastingdienst: zorgtoeslag (health insurance subsidy for lower-income residents); huurtoeslag (rent subsidy for tenants with low income and affordable rents); kinderbijslag (child benefit — flat, not income-tested); kinderopvangtoeslag (childcare subsidy up to 96% of costs for lower incomes). Expats who are Dutch tax residents generally qualify for toeslagen if they meet the income thresholds — the zorgtoeslag and kinderopvangtoeslag are particularly valuable. Applications are made separately via toeslagen.nl. Note: over-claiming toeslagen is a major source of repayment demands from the Belastingdienst (the Dutch childcare benefits scandal involved millions of over-claims) — ensure income declarations are accurate and updated promptly if income changes.
Disclaimer:This guide provides general tax information for educational purposes only. Dutch tax law — particularly Box 3 and the 30% ruling — has been subject to significant changes in 2023–2024 and a new actual-return Box 3 system is planned from 2028. Always consult a qualified Dutch tax advisor (belastingadviseur) before filing.