Use this calculator to add 5% GST to a tax-exclusive price, remove GST from a tax-inclusive price, or find the included GST amount.
A 5% standard GST rate applies in Jersey and as Canada’s federal GST rate. Provincial sales taxes or HST may also apply in Canada.
How to calculate 5% GST manually
To calculate the GST amount, multiply the tax-exclusive price by 0.05.
For a tax-exclusive price of $100.00:
- GST amount: $100.00 × 0.05 = $5.00
- GST-inclusive price: $100.00 + $5.00 = $105.00
To extract GST from a tax-inclusive price, multiply the inclusive price by 5 and divide it by 105.
For a tax-inclusive price of $105.00:
- GST amount: $105.00 × 5 ÷ 105 = $5.00
- GST-exclusive price: $105.00 − $5.00 = $100.00
Alternatively, divide the GST-inclusive price by 1.05 to find the GST-exclusive amount:
- $105.00 ÷ 1.05 = $100.00