Contact

Sales Tax Calculator

Add tax to a price, or pull the tax back out of a total you've already been quoted.

Total
$88.00

10% on $80.00 is $8.00 tax, $88.00 in total.

$80.00 + 10% = $88.00

Tax
$8.00
Net
$80.00

Worked example

Add 10% GST to an $80 net price and the tax is $8, so the total is $88. Extract 10% from an $88 total and the tax is $8, so the net price is $80 — same dollars, just travelling in opposite directions.

FAQ

What is the difference between adding and extracting tax?
Add puts the percent on top of the amount. Extract pulls the tax back out of a figure that already includes it.
How do I extract GST in Australia?
Choose extract and enter 10%. The net amount is the total divided by 1.10, and the tax is the remainder.
Does this know local tax rules?
No. It applies the rate you type. Use 10 for Australian GST, or another rate if you're pricing for somewhere else.