VAT & Sales Tax Calculator: what this tool is for
Value Added Tax (VAT) or Goods and Services Tax (GST / Sales Tax) is an indirect consumption tax levied on the purchase of goods and commercial services across the European Union, the United Kingdom, Canada, and many other jurisdictions globally.
Whether preparing quotes, managing business invoicing, or calculating gross consumer prices, accurately calculating net (excluding tax) and gross (including tax) amounts is an essential everyday task.
This free online VAT and Sales Tax Calculator allows instant bidirectional conversions: add tax to a net price to determine gross cost, extract net amount and sales tax from a gross total, or calculate net and gross values directly from the tax amount alone.
Featuring official rates for France (20%, 10%, 5.5%, 2.1%), the UK, Belgium, Switzerland, Germany, Spain, and Canada, as well as custom percentages, all computations run locally in your browser with zero latency.
All calculations run completely on your client device: your financial numbers, invoice totals, and turnover data remain private and secure.
No file stored
Nothing is saved on our servers, during or after processing.
Local processing
The computation runs in your browser whenever the technology allows it.
Instant result
No waiting and no export queue: the result appears live.
Free, no account
No sign-up, no daily limit and no intrusive ads.
What this tool gives you
Instant bidirectional calculations
Convert Net to Gross, Gross to Net (tax removal), or calculate from VAT amount with a single click.
Official international tax rates
Pre-configured presets for France, United Kingdom, Belgium, Switzerland, Germany, Spain, Canada (GST/QST), or custom rates.
Detailed mathematical breakdown
Inspect transparent calculation steps, tax multipliers, and country-wide comparison tables in real time.
100% private and client-side
Your confidential business figures and invoice amounts are never uploaded to any remote server.
Real-world examples
Review standard and reduced statutory VAT rates across key European and international economies below:
How to use VAT & Sales Tax Calculator
Select your calculation direction
Choose between 'Net Amount ➔ Gross Total', 'Gross Total ➔ Net Amount' (reverse VAT calculation), or 'VAT Only ➔ Net & Gross'.
Enter the base financial figure
Type your base numerical amount and select your preferred currency symbol (€, $, £, CHF, CA$).
Choose the applicable tax rate
Click any country preset rate button (such as UK 20% or France 5.5%) or enter a custom decimal rate.
Review and copy output values
The breakdown cards display the net value, tax amount, and gross total with one-click copy buttons.
Tips and mistakes to avoid
Never subtract 20% directly from a gross price to find net
A gross total of $120 with 20% VAT corresponds to a net price of $100 ($120 / 1.20). Subtracting 20% of $120 yields $96, which produces a 4% error on your margin calculation.
Verify split-rate invoices with mixed product categories
Certain commercial invoices combine items taxed at differing rates (such as food items at 5.5% and alcoholic beverages at 20%). Always compute tax per line item before totaling.
Avoid : Confusing sales tax rate with commercial profit margin
VAT collected on behalf of tax authorities is a neutral pass-through and should never be counted as company revenue or gross profit.
Avoid : Neglecting statutory standard rounding rules
Financial compliance requires rounding tax per transaction line to the nearest currency cent (half-cent rounded upward).
Frequently asked questions
Answers to the questions people ask about VAT & Sales Tax Calculator.
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Updated on August 2026. See all tools