Taking no action does not mean something goes wrong with the Tax Authority or with Belgium. There is no reminder, no additional assessment and no inspection. What does happen is simpler and more final: the amount you could have reclaimed is forfeited. After the final submission date, the refund country can no longer process your request, even if you still have all the receipts and the VAT was actually paid.
This is not a theoretical risk. An installer who regularly works at a customer in Antwerp, a sales representative who stands at a trade fair in Ghent, or a driver who refuels and stays overnight on the way to Brussels: on every business trip, Belgian VAT appears on the receipt. That VAT does not appear in the Dutch return and will never end up there. If you do nothing, you simply pay that VAT as a cost item, year after year, without it ever feeling like a missed refund.
No penalty, just a missed opportunity
The Belgian or Dutch system does not punish anyone for failing to submit a refund request. There is no obligation to do so; it is a right you can exercise, comparable to the right to deduct input tax. The difference is that a missed deduction in your own return can often still be corrected later, while a missed request for foreign VAT is simply closed after the deadline. There is no appeals procedure that will recover the amount, and no second chance in the next quarter.
This makes the consequence mainly a matter of cash flow rather than compliance. The amount that leaks away in this way typically ranges from a few hundred to a couple of thousand euros per year, depending on how often you refuel, stay overnight or make purchases in Belgium. This is a different amount for a sole proprietor who drives to a trade fair in Brussels twice a year than for an installation company that regularly works at Belgian customers. Anyone who wants to know the scale of their situation can have it calculated in a few questions without needing an account for that.
Why it often gets overlooked
The reason small entrepreneurs let this slip is not a lack of willingness but the form of the process. The refund request goes through a portal of the Dutch Tax Authority, by country and by period, with its own classification of cost categories and its own rules about what the refund country will and will not accept. This is exactly the kind of administrative task that gets shelved alongside the regular VAT return, especially if it is a few hundred euros per year. It is not that entrepreneurs do not know the right; it is that executing it takes more time than the amount justifies, unless it is handled in a structured way.
What remains missed in the long term
The effect of doing nothing year after year is not that a file builds up somewhere that will cause problems later. The effect is cumulative in the opposite direction: each year no request is submitted is a year in which the amount is structurally lost from business results, with no correction ever coming. For an entrepreneur who has been doing this for years, it adds up to an amount that becomes clearly visible as soon as someone puts it side by side.
On the other hand, the right itself never expires for future periods. If this year you take a first look at what is happening, you can start taking action from now on for current and future periods, even if an earlier period has already closed. An overview of what applies in each situation is on the page on claiming VAT refunds, broken down by situation, including what changes for different types of entrepreneurs.
What this means for you
The core is straightforward: doing nothing incurs no penalty, but you do miss out on money that could have been recovered. Whether it's worth the effort to arrange depends on how much is actually spent abroad and how much time it would take to handle yourself. Anyone who wants to know exactly where that information comes from and how a request is structured can read about it via an explanation of the entire process, and frequently asked questions are collected on the frequently asked questions page.
Anyone who wants to know if this is relevant to their own situation doesn't need to pay for that: the calculator and knowledge base on vatea.eu are free to consult, even without an account.