Calculate VAT

Add a supplied VAT rate to a net amount or recover the net amount from a VAT-inclusive total.

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ToolVAT Calculator
Input
Output
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Preview

How it works

Add mode multiplies the net amount by rate ÷ 100 and adds the tax; remove mode divides a tax-inclusive amount by 1 + rate ÷ 100 and subtracts the recovered net. The rate is an input, not a live jurisdiction lookup.

  • A 20% rate is an editable example rather than a universal current rate.
  • Add mode is initial because invoices commonly begin with a net line price.

Worked example

Add UK VAT
Add 20% VAT to a 500 net amount
Input
											Amount: 500
VAT rate: 20
Mode: add
Output
												Net Amount: $500.00
VAT (20%): $100.00
Gross Amount: $600.00

When to use this

Invoices add VAT to net lines, receipts back tax out of inclusive totals, and international quotes test a supplied rate before confirmation.

Edge cases

  • Removing 20% VAT from 120 returns 100, not 96, because the inclusive denominator is 120.
  • Zero-rated or exempt supplies need legal treatment beyond entering a zero arithmetic rate.
  • Jurisdiction changes and invoice rounding can make a filed amount differ from this result.