Sales Tax Calculator
Add sales tax to a price or work backwards to find the pre-tax amount and the tax included.
DISCLAIMER: This calculator provides estimates for general informational and educational purposes only and is not financial, investment, tax, or legal advice. Results are approximate and may not reflect your actual situation, fees, taxes, or current rates. Consult a qualified professional before making financial decisions.
What Is the Sales Tax Calculator?
The Sales Tax Calculator adds a tax rate to a price, or reverses it to split a tax-inclusive total into the net price and the tax. Choose Add Tax or Remove Tax, enter the amount and the rate, and see the net, tax and gross. All math is local — it works for VAT and GST too.
How It Works
Pick Add Tax (price is before tax) or Remove Tax (price already includes tax), enter the amount and the tax rate, and the breakdown updates instantly.
When to Use It
Use it for shopping and receipts, invoicing, bookkeeping, or backing tax out of a total for VAT or GST returns.
Frequently Asked Questions
- How does Remove Tax work?
- It divides the tax-inclusive amount by (1 + rate) to find the pre-tax price, then shows the difference as the tax included.
- Can I use it for VAT or GST?
- Yes. The math is the same — just enter your VAT or GST rate as the tax rate.
Last reviewed: 2026-06-27