Filing a supplementary VAT return: correcting an error
Written by Ilias Aarrass7 min read · Published on · Last reviewed on 
In short
If the difference in a closed VAT period exceeds € 1,000 you file a supplementary return, within eight weeks of discovering the error; you can correct up to five years after the year concerned.
- Differences up to € 1,000 payable or refundable may simply go into your next regular return.
- If you send no correction, or send it late, you risk a misconduct penalty.
- Tax interest runs on the amount payable from the end of the year the correction concerns.
- An error on a sent invoice is fixed with a credit invoice, not a supplementary return; it flows through the current return automatically.
Everyone occasionally makes a mistake in their VAT return: a forgotten invoice, a wrong amount entered. As soon as you discover that, you must correct it with a supplementary return (suppletie). That's no reason to panic, but it is something you must do in time. This article explains when and how to file a suppletie.
What is a suppletie?
A suppletie is a correction to a previously submitted VAT return. If you later notice that you declared too much or too little VAT, you fix that with a suppletie. You're obliged to do this as soon as you discover the error; it's not an optional choice.
When must you file a suppletie?
You file a suppletie as soon as you discover an error about an earlier period. For a small amount you may sometimes include the correction in your next regular return. For larger amounts you file a separate suppletie via the tax authorities' portal. Since 2025 a hard deadline applies: you send the correction as soon as possible, but in any case within eight weeks of discovering the error.
What happens with tax interest?
If you remitted too little VAT, the tax authorities can charge tax interest over the period the amount was outstanding. By filing a suppletie quickly, you limit that interest. If instead you get money back because you paid too much, you receive the difference.
How do you avoid supplementary returns?
The best way to avoid supplementary returns is tidy bookkeeping and calmly checking your return before submitting it; filing late costs money anyway, see a late VAT return. Bookkeeping software that processes your invoices automatically reduces the chance of errors. Still, a suppletie is sometimes necessary, and that's completely normal.
The € 1,000 threshold and the ground rules
Not every correction requires a supplementary return. If the balance is under 1,000 euros, payable or refundable, you may simply process it in your next regular return. Above that, a supplementary return is mandatory.
| Situation | What you do |
|---|---|
| Difference under € 1,000 | Include in the next return |
| Difference of € 1,000 or more | Supplementary return via the business portal |
| Current-year error, invoice correction | Credit invoice; corrects itself in the current return |
| Underdeclared over the past 5 years | A supplementary return per year, as soon as possible |
Frequently asked questions
When must I file a supplementary VAT return?
As soon as you discover that, over a closed period, you declared 1,000 euros or more too little or too much on balance. Smaller differences may go into the next regular return.
How do I file one?
Digitally through the business portal or from your bookkeeping software, per calendar year. You enter the correct figures for the whole year; the tax authorities calculate the difference.
Do I get a penalty with a supplementary return?
Send the correction within eight weeks of discovering the error and it usually stays at tax interest on the amount payable. Send no correction, or send it late, and you risk a misconduct penalty. Waiting until the tax authorities find it themselves makes it costlier.
How far back can I correct?
Five years. A refund in your favour, such as forgotten input VAT, can also be recovered up to five years back via a supplementary return.
Do I also correct an invoice error with a supplementary return?
Usually not: a wrong invoice is fixed with a credit invoice, which runs through the current return automatically. The supplementary return is for errors in the return itself over a closed period. See credit invoice.
Does tax interest run on a supplementary return?
Yes, on the amount payable from the end of the year the correction concerns. The sooner you file, the less interest accrues.
Sources
- Correcting a VAT return: the € 1,000 limit and eight weeksBelastingdienst · belastingdienst.nl
- VAT penalties in exceptional situationsBelastingdienst · belastingdienst.nl
Sources checked on
This article provides general information based on the rules known for 2026 and does not replace personal tax advice. For your specific situation, we're happy to take a look with you.
