The Dutch tax office guesses the income of people who don’t file a return, and a new report says those guesses run far too high, leaving tens of thousands overcharged.
If you don’t respond to their requests to file a return, the Belastingdienst (Dutch Tax and Customs Administration) estimates your income and sends you a bill based on that estimate. The problem? These bills are often excessively high.
These findings come from the Inspectie belastingen, toeslagen en douane, the watchdog that oversees Dutch taxes, benefits, and customs. They’ve now written to the Minister and State Secretary of Finance, urging the tax office to start collecting the correct amounts.
Some estimated bills were around €9,000 too high
Back in 2022, roughly 79,000 people were handed one of these estimated bills after they didn’t respond in time.
According to the report, roughly 14,000 people went on to file a proper return, and once they did, the Belastingdienst was forced to recalculate their bills. About 90% of them had been overcharged…and their tax bills went down considerably.
In fact, for about 60% of those 14,000, the corrected figure meant they owed nothing at all, or were even due a refund.
For those who were required to pay tax, the report states that the “average tax amount decreased by around €9,000.”
Who tends to get caught out?
The inspectorate stresses that the issue isn’t about dodging tax.
Instead, the core problem lies in situations where people can’t easily manage the process, including those with:
- limited capacity or health problems,
- little knowledge of how the Dutch tax system works,
- difficulty using computers,
- limited Dutch language skills,
- and trouble gathering the right paperwork.
If any of this sounds like it applies to your situation, the key takeaway is that the tax office won’t fix an estimate for you. It’s on you to prove your real income was lower, and the fight can be more than worth it.
For example, if your income is estimated too high, you risk losing part of your toeslagen (the Dutch income-related allowances, such as healthcare or rent support).
Reimbursements for legal aid or a supplementary student grant can also shrink.
Here’s what to do if you get an estimated bill
Don’t ignore it, even if the number looks utterly absurd on paper. An unchallenged assessment stands, and that amount can easily become real debt.
Instead, you should:
- File your actual tax return: The fastest way to correct an estimate is to submit your real income figures through Mijn Belastingdienst using your DigiD (the Dutch digital ID login).
- Object within six weeks: You can formally object to an assessment within six weeks of its date. After that window, you can still ask the tax office to reduce it, but your options may be narrower.
- Ask for a payment pause or plan if you can’t pay: If the bill is too high to pay while you fix it, you can apply for a payment arrangement. Just know that interest applies, so it’s a way to buy time, not a free pass.
- Get help if the paperwork is the problem. The tax office offers support for people who find filing difficult, and a pilot starting this autumn will reach out to people with tax problems directly to offer help before things go wrong.
Have you ever been hit with a Dutch tax bill that looked way off? Tell us how you sorted it in the comments.
