Is your Booking.com commission invoice correct? Check it in twenty minutes

Early in the month it arrives: the Booking.com commission invoice for the guests who checked out last month. At most properties it goes straight to the accountant without a second look. Understandable — one line per booking, it looks official, and you have three rooms to turn over that morning.

Yet this is one of the few invoices in your business where errors can creep in structurally, and where those errors always fall the same way. Not because anyone is deliberately overcharging you, but because the invoice is built from what sits in the extranet — and what sits there depends on whether you reported a cancellation, a no-show or a shortened stay correctly.

Twenty minutes a month is enough to check it. Below: the method, the five classic discrepancies, and the VAT story that sits alongside them and matters just as much.

First: what is actually on that invoice?

The invoice covers commission on reservations that ended (checked out) in the past month, not on what was booked that month. A booking that came in during March for September only appears on your October invoice. That alone explains why "I don't recognise this booking" so often turns out to be a misunderstanding.

Alongside the invoice itself, the extranet has a reservation statement under Finance: the detail list showing, per reservation, the number, the name, the dates, the commissionable amount and the commission charged. That is the document you need — the invoice alone gives you a total you can't do anything with.

The method: two lists side by side

1. Download the reservation statement for the month in question from the extranet.
2. Export from your own system all bookings for that channel with a departure in that same month, with amount and status.
3. Sort both by reservation number and put them next to each other in a spreadsheet.
4. Look for three things: lines on the invoice that aren't in your list, lines that are missing, and per line, whether the commissionable amount is right.

Don't expect dramatic differences. You're looking for one or two lines a month — and that's exactly why it's worth it: the same error often repeats for months because nobody notices it.

The five classics

1. A cancellation that never came through. If the guest cancelled free of charge, there should be no commission. If you charged a cancellation fee, commission belongs on that fee, not on the full stay. This one usually happens when a guest emails or calls you directly to cancel and you process it in your own calendar but not in the extranet.

2. A no-show you never reported. The most expensive of the five. If you don't mark a no-show as a no-show in the extranet, it stays a normal, fully commissionable booking — you received nothing and pay commission on it anyway. Reporting has to happen within a short window after the scheduled arrival; wait until the invoice arrives and it's usually too late. Make it a fixed reflex, along with the rest of preventing no-shows.

3. A shortened or modified stay. The guest booked four nights and left after two. If that change wasn't recorded in the extranet, commission is charged on four nights. The same goes for a move to a cheaper room type or a price adjustment you allowed on the spot.

4. Tourist tax that got counted in. Commission belongs on the accommodation price, not on a municipal tax you simply pass on. That only works out if the tax is configured in the extranet as a separate, excluded charge rather than baked into your room rate. Configured wrongly, you pay commission every month on money you hand straight to the town hall. How to keep that tax properly separate is in handling tourist tax.

5. Duplicates and phantom bookings. Two identical reservations in the same name for the same night, a test booking, a reservation with an invalid card you were never able to charge. Rare, but real — and only visible if you compare.

The VAT part: reverse charged, not absent

Booking.com invoices from the Netherlands. Your commission invoice therefore carries no Belgian VAT, but a note that VAT is reverse charged to you as the customer. That doesn't mean "no VAT" — it means you declare it yourself.

If you're VAT-registered, your accountant reports that reverse charge in your periodic return. If you fall under the small-business exemption scheme, pay attention: for services from another EU member state you still need a VAT identification number and have to remit that VAT through a special return. Plenty of small properties discover this late.

This isn't tax advice and the details depend on your situation — put your first commission invoice in front of your accountant and ask explicitly how they handle the reverse charge. Agree it once and it runs. It also saves manual work if you connect your bookkeeping.

Found an error — now what?

Report it through the extranet, under Finance, where you can raise an objection per invoice. Quote the reservation number, describe in two sentences what's wrong, and attach your evidence: the guest's cancellation email, your own booking line, the modified dates. Watch the deadline stated on the invoice itself — after that it becomes a discussion instead of a correction.

Then do the important part: fix the cause. Almost every discrepancy comes back to one thing — a change that lived in your head or your calendar, but not in the channel.

What your system can take off your hands

Keeping two records by hand is exactly where it goes wrong. With a channel manager, cancellations, date changes and room moves reach the channel in one motion, so the commission calculation on the other side is right from the start.

In BedFlow PMS you also set your commission percentage per channel once, after which every booking shows the expected commission and you can export all departed bookings per month and per channel. That export is precisely the column you put next to the reservation statement. And because tourist tax is tracked separately from the room rate, you can see straight away which amount is actually commissionable. What commission really costs you over a year is in how much commission Booking.com charges.

Checklist for the first of the month

• Download the reservation statement, not just the invoice.
• Export your own departed bookings for that same month.
• Compare by reservation number: unknown lines, missing lines, differing amounts.
• Check that cancellations, no-shows and shortened stays are recorded in the channel too.
• Verify that tourist tax sits outside the commissionable amount.
• File an objection within the stated deadline, with reservation number and evidence.
• Agree with your accountant how the reverse-charged VAT is processed.

How to configure channel commissions and taxes is in the documentation; what BedFlow PMS costs is on the pricing page. Just want to see what's left of your revenue per channel? Try it free for 30 days, no credit card.