Belgian VAT Filing: A Quarterly Guide for Freelancers

Most freelancers file VAT quarterly, and the quarter-end is where the time goes: finding receipts, matching the bank statement and assembling the return. Here is the calendar, what the return needs, and what to have ready before the deadline.

The 2026 calendar for quarterly filers

Since the VAT chain reform, a quarterly return is due on the 25th of the month after the quarter, and the VAT due is paid by the same date. Quarterly advance payments no longer exist. FPS Finance publishes the exact dates each year, and some of them move off the 25th, so read the date from the calendar rather than from the rule:

Monthly filers are a different calendar

If you file monthly, the return and payment are due on the 20th of the following month, again with published adjustments: the May 2026 return was due on 22 June, August on 21 September, November on 21 December, and December 2026 on 20 January 2027. Do not carry quarterly dates into a monthly file, or the other way round. The FPS Finance calendar lists both.

Filing late

Miss the deadline and the fine is €100 per month of delay, capped at €500, five months and no further. The €500-to-€5,000 ladder you may have heard about is a separate fine, for not filing at all, charged per missing return.

Two things soften the late-filing fine in practice. A first infringement of the same kind in the reference period, committed in good faith, is fully remitted, but only on request, and only once you have filed everything and paid what you owe or agreed an instalment plan. And as a transitional measure for 2026, FPS Finance imposes no late-filing fine where the return arrives within the deadlines of the former summer-holiday regime: the Q2 2026 return by 10 August 2026, the July 2026 monthly return by 10 September 2026.

What goes into the return

Your quarterly return (through Intervat or your accountant) needs:

1. Output VAT: the VAT you charged on your invoices
2. Input VAT: the VAT you paid on business expenses
3. The net position: what you owe, or what is owed to you
4. Intra-community transactions: B2B with other EU countries
5. Credit notes and corrections from the period

Most freelancers have their accountant file it. The filing is only as good as what you hand over.

Five preparation mistakes that cost money

1. Missing invoices. That €450 software subscription you paid in February? Without the invoice, you cannot deduct the VAT on it.

2. Matching the bank statement at the last minute. Left to the last week of the quarter, payments that affect your VAT position are easy to miss.

3. Mixing personal and business expenses. A mixed expense without a clear record is hard to defend and slow for your accountant to sort out.

4. Credit notes in the wrong period. Issued a credit note in February for a December invoice? The adjustment belongs in Q1, not Q4.

5. Not knowing the VAT balance until the return. If you only learn what you owe when your accountant calculates it, it is late to plan for the payment.

Where Dokus fits

Dokus does not file your VAT return, and it does not decide how a document is treated: that is your accountant's job. It keeps the preparation from piling up at quarter-end:

• Documents as they arrive. Invoices and receipts are captured when they come in, and their VAT amounts and rates are read and checked.
• Payments with their invoices. Dokus links each bank movement to the invoice it pays and shows why: clear matches confirm themselves, the rest you confirm. The bank movements come from the statements you upload, or from the live bank feed on Core.
• A running VAT overview. Your VAT position is read from the documents you have confirmed, so the figure is there before the deadline, not only at it.
• A clean handover. When your accountant needs the quarter, the documents are there with their sources.

The deadline stays the same. What changes is how much of the quarter is left to assemble in its last week.