CalcOak

GST / VAT Calculator: add tax to a price or strip it out of a tax-inclusive total

Enter an amount to see the net, tax and gross figures.

How to use this calculator

Decide which figure you already have. If you know the price before tax and want to see what the customer pays, leave "Add tax" selected, type the net amount and choose your country's rate. If you are looking at a receipt or a tax-inclusive price and need to know how much of it is tax, switch to "Remove tax" and enter the gross figure instead. The three boxes always show net, tax and gross together, so whichever way round you start you can read off the other two.

The country menu lists the standard rate and, where relevant, the main reduced rates; pick the one that applies to what you are selling. Canada is listed by province because the combined rate depends on where the customer is. For the United States, or anywhere the preset does not fit, choose "Custom rate" and type the percentage directly. The line under the results spells out the arithmetic so you can reproduce it in a spreadsheet or check it by hand.

Why use this rather than guessing

Adding tax is easy; removing it is where people go wrong. A price of $110 with 10% GST included does not contain $11 of tax, it contains $10, because the tax was calculated on the $100 net figure. That "divide, don't subtract" rule is easy to forget under time pressure, and getting it wrong on a quote or expense claim is the kind of small error that is awkward to explain later.

Keeping the rates for many countries in one place is also handy if you sell across borders. A freelancer invoicing clients in Australia, the UK and Germany in the same week can switch between 10%, 20% and 19% in one click rather than keeping three bookmarks. The rates are stored in this page and nothing you type leaves your browser.

Reference: current standard rates

CountryTaxRate
AustraliaGST10%
New ZealandGST15%
SingaporeGST9%
IndiaGST18% (standard)
IndiaGST5% (merit)
IndiaGST40% (de-merit / luxury)
CanadaGST5% (federal only: AB, territories)
CanadaHST13% (Ontario)
CanadaHST15% (NB, NL, PEI)
CanadaHST14% (Nova Scotia)
CanadaGST + QST14.975% (Quebec)
CanadaGST + PST12% (British Columbia)
CanadaGST + PST11% (Saskatchewan)
CanadaGST + RST12% (Manitoba)
United KingdomVAT20% (standard)
United KingdomVAT5% (reduced)
IrelandVAT23% (standard)
IrelandVAT13.5% (reduced)
GermanyVAT19% (standard)
GermanyVAT7% (reduced)
FranceVAT20% (standard)
FranceVAT10% (intermediate)
FranceVAT5.5% (reduced)
ItalyVAT22% (standard)
ItalyVAT10% (reduced)
SpainVAT21% (standard)
SpainVAT10% (reduced)
NetherlandsVAT21% (standard)
NetherlandsVAT9% (reduced)
BelgiumVAT21%
AustriaVAT20%
SwitzerlandVAT8.1%
SwedenVAT25%
DenmarkVAT25%
NorwayVAT25%
FinlandVAT25.5%
PolandVAT23%
PortugalVAT23%
GreeceVAT24%
CzechiaVAT21%
HungaryVAT27%
LuxembourgVAT17%
EstoniaVAT24%
SlovakiaVAT23%
CroatiaVAT25%
RomaniaVAT21%
BulgariaVAT20%
LithuaniaVAT21%
LatviaVAT21%
SloveniaVAT22%
MaltaVAT18%
CyprusVAT19%
TürkiyeVAT20%
IsraelVAT18%
United Arab EmiratesVAT5%
Saudi ArabiaVAT15%
South AfricaVAT15%
EgyptVAT14%
NigeriaVAT7.5%
KenyaVAT16%
JapanConsumption tax10%
JapanConsumption tax8% (food)
South KoreaVAT10%
ChinaVAT13% (goods)
ChinaVAT6% (services)
PhilippinesVAT12%
IndonesiaVAT11% (effective rate, most goods)
IndonesiaVAT12% (luxury goods)
ThailandVAT7%
VietnamVAT10% (standard)
VietnamVAT8% (temporary reduction through 2026)
MalaysiaService tax8%
MalaysiaService tax6% (F&B, telecoms, logistics)
MalaysiaSales tax10%
PakistanSales tax18%
BangladeshVAT15%
MexicoIVA16%
ArgentinaIVA21%
ChileIVA19%
ColombiaIVA19%

Rates as understood in September 2026. Verify against the relevant tax authority before filing.

Frequently asked questions

How do I remove GST or VAT from a price that already includes it?+

Divide the gross price by one plus the rate as a decimal. For a 20% rate, divide by 1.2; for 10% GST, divide by 1.1. The result is the net price, and the difference is the tax. Choose "Remove tax" above and the calculator does this for you and shows the working.

Why not just take 20% off a VAT-inclusive price?+

Because the 20% was added to the net amount, not the gross. Taking 20% off £120 gives £96, but the correct net figure is £100, since £100 plus 20% is £120. The tax is a sixth of the gross at 20%, not a fifth, and the mistake gets bigger at higher rates.

Are the preset rates up to date?+

The presets are reviewed regularly, but governments change rates, usually at the start of a fiscal year, and this page cannot know about a change on the day it happens. Always confirm the rate on the official tax authority website before relying on it for a filing. The custom field takes any rate if the preset is stale.

What is the difference between GST, VAT, HST and sales tax?+

They are all taxes on consumption charged as a percentage of the price. GST (goods and services tax) and VAT (value added tax) are the same idea under different names and are applied at every stage of the supply chain. HST is the harmonised version used in some Canadian provinces that merges federal and provincial tax. US sales tax is charged only at the final sale and varies by state and city.

Can I calculate tax on a whole invoice with several rates?+

This tool works on one amount and one rate at a time, which covers most everyday needs. For an invoice that mixes standard and reduced rates, run each group of items separately and add the tax figures together. A dedicated invoice generator with line-item tax is coming to this site.