Common Mistakes with the 30% Ruling

Key Takeaways

• The most expensive mistake is missing the 4-month application deadline — it cannot be fixed after the fact.
• Many expats never elect partial non-resident status, leaving thousands of euros on the table every year.
• Changing jobs requires a new application within 3 months — the ruling does not transfer automatically.
• Not all income benefits from the ruling — bonuses, stock options, and benefits in kind have specific rules.
• Failing to plan for the ruling's expiry leads to financial shock when Box 1, Box 2, and Box 3 taxes all increase simultaneously.

Mistake 1: Missing the 4-Month Application Deadline

The cost: Months of lost tax benefit, potentially €5,000–€15,000+ in unnecessary tax.

The 30% ruling must be applied for within 4 months of your first working day in the Netherlands. If you apply late, the ruling starts from the first day of the month after the Belastingdienst receives your application — not from your start date.

How to avoid it:

• Note the deadline in your calendar the day you sign your employment contract
• Ask your employer to initiate the application process before your start date
• Do not wait for your BSN — submit the application without it if needed

Mistake 2: Not Electing Partial Non-Resident Status

The cost: Potentially thousands of euros per year in unnecessary Box 2 and Box 3 tax.

The 30% ruling gives you the option to elect partial non-resident taxpayer status (partieel buitenlands belastingplichtige). This exempts your foreign assets from Box 2 and Box 3 tax. But it is not automatic — you must actively choose it on your annual tax return.

How to avoid it:

• When filing your tax return, look for the partial non-resident option
• Calculate whether it is beneficial for your situation (it almost always is if you have foreign assets)
• Make the election every year — it does not carry over automatically

Example of the cost: An expat with €300,000 in foreign investments who does not elect partial non-resident status pays approximately €4,000–€6,000 per year in unnecessary Box 3 tax.

Mistake 3: Failing to Transfer the Ruling When Changing Jobs

The cost: Permanent loss of the 30% ruling.

When you change employers, the ruling does not follow you automatically. You must:

1. Start your new job within 3 months of leaving the old one
2. Submit a new joint application with the new employer
3. The new employer must pay at least the minimum salary threshold

If you exceed the 3-month gap, the ruling is permanently lost. There is no way to restore it.

How to avoid it:

• Plan job transitions carefully — align your end date and start date
• Inform your new employer about the 30% ruling early in the hiring process
• Submit the new application as soon as you start the new job (do not wait)

Mistake 4: Not Understanding What Income the Ruling Covers

The cost: Confusion about your payslip and potential compliance issues.

The 30% ruling applies to your employment salary from the employer who jointly applied with you. It does not apply to:

Mistake 5: Ignoring the 30/20/10 Reduction Schedule

The cost: Financial strain when net income drops at Phase 2 and Phase 3.

Since 2024, new 30% ruling grants follow the 30/20/10 schedule. Your net salary decreases significantly at each transition:

Over the full period, you receive roughly one-third less total benefit compared to the old flat 30% system.

How to avoid it:

• Build your budget around your Phase 3 (10%) net income, not Phase 1
• Save the difference between Phase 1 and Phase 3 as a buffer
• Negotiate salary increases with your employer to compensate for the step-downs

Mistake 6: Not Filing a Tax Return

The cost: Overpaid taxes and missed benefits.

Many expats assume that because their employer handles payroll tax, they do not need to file an annual tax return. This is wrong for several reasons:

• You cannot elect partial non-resident status without filing
• You may be entitled to deductions (mortgage interest, charitable donations) that reduce your tax
• Your employer's monthly withholding is an estimate — the final calculation happens on the tax return
• If you have income from other sources, it must be reported

How to avoid it:

• File your tax return every year, even if you think the withholding was correct
• The Belastingdienst sends invitation letters (aangiftebrief) — if you receive one, you are legally required to file
• Use the Belastingdienst's online filing tool or hire a tax advisor

Mistake 7: Moving All Investments to a Dutch Broker

The cost: Turning exempt foreign assets into taxable Dutch assets.

When moving to the Netherlands, it is natural to want to consolidate your finances. But transferring investment accounts from a foreign broker to a Dutch one makes them Dutch assets — which are taxed in Box 3 even with partial non-resident status.

Example: Moving a €200,000 stock portfolio from Interactive Brokers (Ireland) to DeGiro (Netherlands) turns an exempt foreign asset into a taxable Dutch asset, costing approximately €2,500–€4,000 per year in Box 3 tax.

How to avoid it:

• Keep foreign investment accounts where they are during the ruling period
• Only consolidate after the ruling expires (when all assets are taxable regardless)
• Open a separate Dutch account for day-to-day banking if needed, but leave investment portfolios abroad

Mistake 8: Forgetting About the Minimum Salary Every Year

The cost: Potential loss of the ruling.

The minimum salary requirement is not a one-time check. Your salary must meet the threshold every year for the ruling to continue. If your salary drops below the minimum (e.g., due to going part-time, a pay cut, or unpaid leave), the ruling may be revoked.

The threshold increases annually. A salary that met the threshold in 2024 may not meet it in 2026.

How to avoid it:

• Check the current year's threshold against your salary annually
• If you are close to the minimum, discuss salary adjustments with your employer
• Be cautious about going part-time — it can push your salary below the threshold

Mistake 9: Not Planning for Expiry

The cost: Financial shock when the ruling ends.

When the 30% ruling expires, three things happen simultaneously:

1. Box 1: Your full salary is taxed — net income drops by €5,000–€15,000+ per year
2. Box 2: Foreign substantial interests become taxable
3. Box 3: All worldwide assets become taxable

For an expat earning €75,000 with €300,000 in foreign assets, the combined annual tax increase can exceed €15,000.

How to avoid it:

• Calculate your post-ruling tax position at least 12 months before expiry
• Build a financial reserve during the ruling period
• Negotiate a gross salary increase with your employer to partially offset the loss
• Consider restructuring assets or investments before the ruling ends
• Evaluate whether the Netherlands is still the right place for you financially

Mistake 10: Assuming Your Employer Knows Everything

The cost: Missed deadlines, incorrect payroll, lost benefits.

Not all employers — especially smaller companies or those new to hiring expats — are familiar with the 30% ruling. Common employer-side mistakes include:

• Not knowing the ruling exists
• Applying the ruling to the wrong salary components
• Not adjusting payroll when the 30/20/10 phase changes
• Not understanding the joint application requirement

How to avoid it:

• Be proactive — do not assume HR will handle everything
• Verify your payslip matches the expected 30% ruling application
• Provide your employer with clear information about the ruling
• Consider hiring your own tax advisor for the initial setup

Quick Reference: Deadline Summary

What to Read Next

• How to Apply — Step-by-step application guide
• When Your 30% Ruling Expires — Full guide to managing the transition
• Partial Non-Resident Status — Maximize the Box 2/3 benefits
• 30/20/10 Reduction Schedule — Understand the phase-down