Free calculator
VAT calculator
Enter an amount, pick the rate and see the amount excluding VAT, the VAT and the amount including VAT straight away. Rounded to the cent, with the calculation shown.
Stays on your device. The calculation runs in your own browser. Your amounts go nowhere. We only count anonymously how the page is used (no cookies, no IP address).
Only the chosen rate, in your own browser. Never your amounts.
Result
Enter an amount and pick a rate. The calculation appears here.
- Amount excl. VAT
- VAT
- Amount incl. VAT
The calculation
Rounded to whole cents (half a cent and up rounds up).
A calculation aid, not advice. Always check amounts you put on an invoice yourself.
Last checked: 12 October 2026.
How to work out VAT by hand
From excluding to including VAT: multiply the amount by 1 plus the rate. At 21% that is × 1.21, at 9% × 1.09 and at 0% × 1.00. The VAT itself is the amount × the rate: €100.00 × 21% = €21.00, so €121.00 including VAT.
From including to excluding VAT: divide the amount by the same factor. €121.00 ÷ 1.21 = €100.00. The VAT is the difference between the two amounts. Do not take 21% off the amount including VAT: that gives too low an amount, because 21% of the larger amount is more than the VAT.
Rounding: round to whole cents. This calculator rounds half a cent and up upwards. Going from including to excluding VAT, the amount excluding VAT is rounded first and the VAT follows from it, so the three amounts always add up exactly. If you work with several lines, the sum of the rounded lines can differ by a cent from the VAT on the total.
Frequently asked questions
What is the difference between an amount incl. and excl. VAT?
Excluding VAT is the amount without VAT; including VAT is what the customer pays. The difference is the VAT. Business prices and quotes often show the amount excluding VAT; for consumers the amount including VAT is usually shown.
Which rate should I enter?
That is up to you. Which rate applies depends on the work and your situation. Check with the Belastingdienst or your accountant. This calculator only does the sum with the rate you choose.
Can I enter my own rate?
Yes. Choose ‘Own rate’ and type a percentage from 0 to 100, with at most two decimals.
Are my amounts stored or sent anywhere?
No. The calculation runs in your own browser. The page loads no third-party scripts and sends your amounts nowhere. We only count anonymously how the page is used (no cookies, no IP address). Only if you tick the box does your browser remember the chosen rate for next time.
Why is my result a cent off from my accounting software?
Software may round at different moments: per line or only on the total. Check which method your accounting uses.
Making quotes at your own prices?
Describe the job. Briefbee writes the quote in your words and at your prices; you check it and send it.