What does it cost to have your Dutch tax return filed? An honest breakdown

The honest answer nobody gives you

I get this question at least twice a day. And I genuinely hate that most of our industry hides behind "it depends." So here's the straight answer: you'll pay between €150 and €800, depending on how complicated your situation is.

There. Done. Well, almost. Let me break it down.

Why hourly rates are a trap

Most tax advisors in the Netherlands work with hourly rates. Somewhere between €75 and €150 per hour. Sounds reasonable, right? Until you get the invoice.

The problem is simple: you have no idea how many hours your advisor actually spends on your return. And they have every incentive to spend more. I've seen clients get a €1,200 invoice for what should have been a €300 job. The advisor spent 8 hours on it because they were inefficient. The client paid for that inefficiency.

That's why we work with fixed fees. You know exactly what you'll pay before we start. No surprises, no running clock, no anxiety every time you send us a follow-up question.

Think about it like this: would you rather hire a plumber who charges per hour (and seems to work very slowly), or one who gives you a fixed quote upfront? Exactly.

What makes a return simple vs complex?

Here's my honest breakdown by situation type. These are real-world ranges based on what advisors across the Netherlands charge:

Simple return (€150-€300)

• Salary income from one or two employers
• Mortgage and own home deductions
• Healthcare costs, charitable donations
• Standard P-form (the regular tax return)

If you're employed with a mortgage, this is not rocket science. Don't let anyone charge you €500 for it. Seriously. The tax authorities pre-fill most of your data anyway. A competent advisor should be able to review, optimize, and file this in under two hours.

Medium complexity (€300-€500)

• Salary plus rental income from property
• First year in the Netherlands — M-form (the migration form)
• Applying the 30% ruling
• Box 3 assets above the €57,684 tax-free threshold (2025) or €59,357 (2026)
• Income from two countries in the same year

The M-form is where things get interesting. It covers only the part of the year you were a Dutch tax resident, and it requires splitting your worldwide income. Most errors I see in expat returns happen here.

Complex return (€400-€800)

• Freelance (ZZP) income combined with employment
• Foreign income from multiple countries
• Box 3 assets exceeding €100,000 (with deemed returns of 1.37% on savings and 5.88% on investments in 2025, all taxed at 36%)
• DGA structure with a BV (limited company)
• Crypto income or foreign real estate

At this level, the advisor needs deep expertise. They should understand tax treaties, know how to handle the self-employed deduction (€2,470 in 2025, dropping to €1,200 in 2026), and be able to structure your affairs for optimal tax efficiency.

The free tax check — how it works

We started offering free checks because too many expats were either overpaying or missing deductions they didn't even know existed. One client discovered she'd been paying Box 3 tax on savings that were exempt under the green investments scheme (€26,312 per person tax-free in 2025). She got €1,800 back.

Here's what our free check includes:

• A 15-minute review of your specific situation
• Concrete advice — not vague platitudes, but actual numbers
• A clear quote for any work you want us to do
• Zero obligations — you choose whether to continue

Book your free check here. We'll tell you exactly what it would cost before you commit to anything.

Hidden costs to watch out for

This is the part advisors don't like talking about. But you should know:

• VAT (BTW): Ask upfront whether the quoted price includes or excludes 21% VAT. You'd be surprised how many firms quote ex-VAT. That "€200 return" suddenly becomes €242.
• Box 3 surcharge: Some firms charge extra if you have significant Box 3 assets. Fair enough, it's more work — but you should know about it upfront.
• Filing objections (bezwaarschriften): If you disagree with your tax assessment and want to file an objection, that often costs extra. Sometimes €200-€500 on top of the original fee.
• Follow-up questions: After filing, the Belastingdienst may come back with questions. Some advisors charge separately for handling these. Others include it. Ask.
• Annual price increases: Some firms quietly raise their fees each year without telling you. Check your engagement letter.

My advice: always ask for a clear, written quote before you start. What's included? What's not? What happens if the Belastingdienst asks follow-up questions? If they won't give you a straight answer, walk away. There are plenty of advisors who are transparent about their pricing. Like us.

A good tax return doesn't have to be expensive. It has to be fair. And that starts with being honest about what it costs.

What a good advisor actually saves you

This is the question people forget to ask. Yes, an advisor costs money. But what do they save you?

Last month I helped an expat who had been reporting his Box 3 assets incorrectly for three years. His savings were taxed at the deemed investment return of 5.88% instead of the savings rate of 1.37%. The difference? Over €2,100 in overpaid taxes across three years. We filed for retroactive correction and got it all back.

Another client didn't know she could use the green investments exemption — €26,312 per person tax-free in 2025. That saved her €340 per year. Every year.

That's the point. A good advisor costs you money upfront, but a bad advisor — or no advisor at all — costs you more. Much more. Especially when you're dealing with Box 1 rates of 35.82% up to 49.50% (2025). Every missed deduction hits hard at those rates.

So yes, compare prices. But also compare what you get in return. The cheapest office isn't always the best deal.