VAT Calculator

What is the VAT Calculator?

Add or remove VAT/GST from any amount at any rate. VAT and GST can be added to a net price or removed from a gross price, and this tool does either at any rate.

How to use the VAT Calculator

1. Enter your amount, your vat rate, your mode.
2. Results update automatically as you type; you can also press Calculate.
3. Read the output: gross (incl. vat), net (excl. vat), vat amount.
4. Use the 📊 chart to see the result visually, then copy or share it.

Formula and method

Worked example

With amount = $100, vat rate = 20 %, mode = Add VAT (net → gross), the VAT Calculator returns gross (incl. vat): 120.00; net (excl. vat): 100.00; vat amount: 20.00.

Where the VAT Calculator helps in real life

You run a small online store selling to the UK and need to show prices including 20% VAT. Adding VAT to your net prices gives the customer-facing figure.

You have a receipt showing a total including 10% GST and need the net amount for your accounts. Removing the tax gives the exact pre-tax figure.

Common mistakes to avoid

• Removing VAT by subtracting the rate percentage from the gross total.
• Using the wrong rate for reduced-rate goods.
• Rounding each line and then the total, causing small differences.
• Confusing VAT with US sales tax, which works differently.

💡 Practical tip: Removing 20% VAT from £120 gives £100, not £96 — divide by 1.2 instead of taking 20% off.

Tips for better results

• To remove VAT, divide by (1 + rate) rather than subtracting the percentage.
• Check the correct rate for the country and product category.
• Keep both net and gross figures on invoices.

⚠️ Business results are estimates for planning. Consult an accountant for tax and reporting decisions.

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