VAT / Sales Tax Calculator
Intro
This calculator helps you move between tax-exclusive and tax-inclusive prices using either a preset VAT or sales tax rate or a custom percentage. It is useful for invoices, retail checks, quoting work, comparing supplier prices, and everyday budgeting.
How it works
The calculator applies a straightforward percentage formula.
- If your amount is before tax:
gross = net x (1 + rate / 100) - If your amount is after tax:
net = gross / (1 + rate / 100) tax amount = gross - net
Limitations: this is a planning calculator, not legal or accounting advice. VAT exemptions, mixed rates, import rules, reverse charge logic, state-by-state nexus rules, and invoice compliance details are out of scope for this first version.
Practical use scenarios
- Check whether a quoted price includes tax.
- Back out net value from a receipt or consumer price.
- Estimate invoice totals for freelance or agency work.
- Compare supplier prices across markets using the same tax logic.
Related tools
FAQ
No. Presets are convenience shortcuts for common headline rates and should be verified against the actual rules that apply to your product, service, and jurisdiction.
Yes, as a rough percentage calculator. It does not handle local filing rules, exemptions, or nexus.
Select "Price after tax" and the tool will back out the net amount and tax portion.
No. Inputs stay in your browser.