The Dutch income tax return (aangifte inkomstenbelasting) is due on 1 May every year, a date that catches plenty of expat entrepreneurs off guard the first time around, especially coming from a system with a different filing calendar. A tax filing extension in the Netherlands is possible, but how much extra time you get depends entirely on whether you request it yourself or through a bookkeeper.
Dutch tax filing extension: the deadlines at a glance
| Situation | Deadline |
|---|---|
| Standard income tax return, no extension | 1 May |
| Self-requested extension, filed before 1 May | 1 September |
| Filed through a bookkeeper or tax adviser (the "becon" scheme) | Usually until 30 April the following year, on a fixed submission schedule |
| You're owed a refund and received no filing letter | Up to five years after the end of the tax year |
Requesting an extension yourself
If you request an extension yourself, through Mijn Belastingdienst (the Tax Administration's online portal) or the Tax Information Line, and you do it before 1 May, your deadline automatically moves to 1 September. For most freelancers that's already enough: four extra months to gather paperwork or get past a busy stretch of the year.
The catch is timing. Request an extension after 1 May, and the Tax Administration will generally refuse it, unless there's a genuinely exceptional reason, such as serious illness. At that point you're no longer filing a simple online request, you're writing a letter explaining the circumstances.
Extension through a bookkeeper: the becon scheme
Have a bookkeeper or tax adviser handle your return, and a different arrangement applies: the uitstelregeling belastingconsulenten, known informally as the becon scheme. Under it, the extension usually runs until 30 April of the year after the tax year, close to a full extra year compared with the standard deadline.
That doesn't mean every client of a firm files on the very last day. The Tax Administration works with a fixed submission schedule: returns filed under the becon scheme get spread across the year, in an order the adviser agrees with the Tax Administration in advance. If there's good reason to need even more time, an ongoing audit, for example, an adviser can request additional extension on top of that, with a motivation attached.
Filing late still costs you interest
An extension to file is not the same as an extension to pay. If you end up owing money, the Tax Administration charges belastingrente (tax interest) starting 1 July of the year after the tax year, regardless of whether your filing itself was extended. The longer it takes for your final assessment to be set, the longer that interest keeps running. We've covered the mechanics of this, and how to limit it, in a separate guide for Dutch filers; in short, keeping your provisional assessment (voorlopige aanslag) up to date during the year matters more than the filing extension itself.
Missed the deadline without requesting an extension?
If you owe tax, missing the deadline puts you at risk of a fine and of an estimated assessment (ambtshalve aanslag), a figure the Tax Administration sets itself and that typically comes out higher than what you actually owe. If you're due a refund, the pressure is lower: as the table above shows, a refund-only return can still be filed for years afterward. That's not a reason to let it sit indefinitely, but it's also not an emergency.
Frequently asked questions
Can I still get an extension after 1 May without a special reason? Usually not. After 1 May, a standard extension request through Mijn Belastingdienst or the Tax Information Line is no longer accepted. Exceptions exist only for genuinely exceptional situations, submitted in writing.
Does the bookkeeper extension also apply to VAT returns? No. The becon scheme and the standard extension apply to income tax. A VAT filing extension works differently and is requested separately, usually only when there's a demonstrable payment problem.
Will I be fined if I still miss the extended deadline? Yes. Once you miss the extended deadline too, the same risks apply as missing the original one: a fine, and possibly an estimated assessment.
Does requesting an extension cost anything? No, requesting it yourself and the becon scheme through a bookkeeper are both free in themselves. What you pay for is your bookkeeper's work, not the extension itself.
New to the Dutch tax calendar?
At Sophy &Co. we help expat entrepreneurs long before a company is even registered, not just once the first filing deadline is looming. Book a call and we'll walk you through what the Dutch tax calendar actually looks like for your situation, no Dutch required, and we can connect you with our network of trusted partners, banks, lawyers, and notaries, plus other expats who've already been through it.
We're a woman-led, multilingual team of bookkeepers, both women and men, and proudly LGBTQIA-friendly. Between us we speak English, Dutch, Italian, Chinese, Spanish, Papiamento, German, and some French and Polish, so get in touch in whatever language is easiest for you.
How we keep you off the extension list entirely
Our preference is to make an extension unnecessary in the first place. Share your invoices with us, and we track your filing and your provisional assessment throughout the year, so 1 May isn't a scramble for missing paperwork. If you do fall under the becon scheme as one of our clients, we handle that request and the submission schedule for you.
Take a look at our services and pricing, or get in touch for a no-obligation conversation.
For the official rules, see the Dutch Tax and Customs Administration's page on requesting a filing extension (in Dutch) or the Dutch government's business portal overview of requesting a tax filing extension (in Dutch).