Booking Fee Calculator: Platform Fee and Total Paid
Work out the booking fee a platform charges on top of a headline price — the gap between the advertised price and the amount that actually comes out of your account.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Booking fee | Total paid |
|---|---|---|
| $400 · 6% | $24.00 | $424.00 |
| $150 · 10% | $15.00 | $165.00 |
| $1,200 · 4% | $48.00 | $1,248.00 |
| $80 · 15% | $12.00 | $92.00 |
How This Calculator Works
Enter the base price and the platform's fee percentage. The calculator multiplies the two to find the booking fee, then adds it to the base to give the total paid.
The Formula
Percentage Add-On
Rate is the tax or tip percentage applied to the amount
Worked Example
A $400 hotel booking with a 6% platform fee adds $24, for a total of $424. The same percentage applied to a $4,000 flight would add $240 — fees scale fast on big purchases.
Key Insight
Booking fees are often quoted as small percentages but stack up: a 5% platform fee, a 3% currency markup, and a $20 flat fee on a $500 booking adds $60 — a 12% all-in cost. Always compare the total charged across platforms, not the headline rate.
Frequently Asked Questions
What is a booking fee?
A charge a booking platform adds to a hotel, flight, or ticket price for handling the reservation. It can be a flat amount, a percentage, or both.
Is the booking fee included in the headline price?
Usually no. Most platforms show the base price up front and add the fee at checkout, which is why the final amount is higher than the price you started with.
What about taxes and resort fees?
Those are usually separate from the platform's booking fee. Taxes and resort fees go to the property or government; booking fees go to the platform.
Why do some platforms charge no booking fee?
They earn through commission from the supplier instead of from the customer. The price you see can still be marked up — the cost is just hidden in the headline rather than added at the end.
How do I compare platforms fairly?
Always compare the total charged, including the booking fee and any add-ons. The platform with the lowest headline price often is not the cheapest at checkout.
Related Calculators
Methodology & Review
The booking fee is the base price multiplied by the fee percentage; the total adds the fee to the base. Flat per-booking fees, currency-conversion markups, and taxes collected separately are not modeled — this covers percentage-based booking fees only.
Written by Ugo Candido · Last updated May 17, 2026.