VAT Calculator — Add or Remove VAT

Introduction

Add or extract VAT from a price using a VAT rate — similar to GST but labeled for international use.

Disclaimer: This tool is for informational purposes only and is not professional medical, pharmaceutical, financial, or tax advice. Always verify doses with a licensed clinician or pharmacist.

Formula

When the amount excludes VAT, VAT is net × rate. When inclusive, net = gross ÷ (1 + rate).

• N — Net amount excluding VAT
• r — VAT rate percent
• G — Gross amount including VAT

Step-by-step

1. Enter the amount.
2. Enter the VAT rate.
3. Choose whether the amount already includes VAT.
4. Read net, VAT, and gross.

Worked example

A €100 net price at 20% VAT has €20 VAT and €120 gross.

Use cases

• Add VAT to a net invoice line
• Extract VAT from a tax-inclusive price
• Check checkout totals abroad

Frequently asked questions