Tax Inclusive / Exclusive Calculator
Add tax to a net price or extract tax from a tax-inclusive price, with the net, tax, and gross broken out. Works both directions. Runs in your browser.
Breakdown
- Net (before tax)
- $100.00
- Tax (8%)
- $8.00
- Gross (with tax)
- $108.00
To add tax: net × (1 + rate). To remove tax from a tax-inclusive price: gross ÷ (1 + rate) — not gross × (1 − rate), a common error.
About this tool
Sales tax and VAT work in two directions, and people regularly get the reverse one wrong. This calculator handles both. Given a tax-exclusive (net) price, it adds the tax to give the gross. Given a tax-inclusive (gross) price — like a receipt total or a VAT-inclusive shelf price — it extracts the embedded tax to reveal the net and the tax amount. The crucial detail it gets right is the reverse calculation: to remove tax you divide by (1 + rate), not multiply by (1 − rate). A $108 total at 8% tax contains $100 net and $8 tax (108 ÷ 1.08 = 100), whereas the wrong method (108 × 0.92 = 99.36) under-reports the net. This matters for bookkeeping, expense reports, invoicing, and pricing in VAT-inclusive markets. The arithmetic is exact and runs in your browser; enter your local rate since sales tax and VAT vary widely by jurisdiction.
How to use it
- Enter the amount and your tax rate.
- Choose whether the amount excludes tax (to add it) or includes tax (to remove it).
- Read the net, tax, and gross figures.
- Use it for invoices, receipts, and VAT-inclusive pricing.
Frequently asked questions
- How do I remove tax from a tax-inclusive price?
- Divide by (1 + rate). For a $108 total at 8% tax: 108 ÷ 1.08 = $100 net, so the tax is $8. Do not multiply by (1 − rate) — that gives the wrong answer ($99.36 here).
- How do I add tax to a net price?
- Multiply by (1 + rate): $100 net at 8% becomes 100 × 1.08 = $108 gross, with $8 of tax. That is the "amount excludes tax" mode.
- Why isn't removing tax just subtracting the percentage?
- Because the tax was calculated on the net amount, not the gross. The percentage of the larger gross figure is bigger than the actual tax, so subtracting it overshoots. Dividing by (1 + rate) recovers the true net.
- What's the difference between net and gross here?
- Net is the price before tax; gross is the price including tax; tax is the difference. Receipts in the US usually show net then add tax; VAT-inclusive prices in many countries show the gross with tax already inside.
- Does this work for VAT and GST too?
- Yes. The math is identical for any single-rate value-added or sales tax — enter your VAT/GST rate. It does not handle compound or multi-rate taxes; apply those separately.
- Is anything uploaded?
- No. All calculation runs in your browser with no network request.