Free Tax Calculator
Calculate tax-inclusive and tax-exclusive amounts instantly. Works for VAT, GST, sales tax, or any custom rate.
Tax Calculator
Breakdown
Need tax calculations on every invoice?
Fastbooks automatically calculates tax on your invoices and bills — inclusive or exclusive — so you never have to do the maths manually.
Tax Inclusive vs Tax Exclusive — What's the Difference?
Tax exclusive means the price shown doesn't include tax — the tax is added on top. For example, an item priced at $100 with 20% tax exclusive becomes $120 total. Tax inclusive means the price already includes tax — so a $120 tax-inclusive price contains $20 of tax and $100 net.
Common Tax Rates Around the World
- United Kingdom — VAT at 20% (reduced rate 5%, zero rate 0%)
- United States — Sales tax varies by state (0–10.25%)
- European Union — VAT typically 17–27% depending on country
- Australia — GST at 10%
- New Zealand — GST at 15%
- Canada — GST at 5% (plus provincial taxes)
- India — GST at 5%, 12%, 18%, or 28%
- South Africa — VAT at 15%
How to Calculate Tax
Tax exclusive: Multiply the net amount by the tax rate. For example, $100 × 20% = $20 tax, so the total is $120.
Tax inclusive: Divide the total by (1 + tax rate). For example, $120 ÷ 1.20 = $100 net, with $20 being the tax portion.