Sales Tax Calculator

How to Use This Tool

1. Select country/state preset or custom tax rate.
2. Enter base amount.
3. Calculate tax amount and total payable.

Common Use Cases

• Invoice preparation
• Retail checkout validation
• Cross-country tax comparison

Important Notes

• Country and state rates are indicative and may change.
• Always verify final tax compliance requirements locally.
• Formula: total = base amount + (base amount * tax rate).
• All calculations run fully in your browser. Inputs are not sent to our server.
• Safe and free to use: no login, no signup, no paywall.
• Country and currency presets are for planning support and may require local verification.
• If you find a bug, please report it in comments with sample input and expected output.

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