Guide / 01
When to use it
Use it to add 10% VAT to a net invoice amount or separate the net value and tax portion from a tax-inclusive receipt.
CALC / 029
VAT & Sales Tax Calculator
Add or remove VAT and sales tax at any percentage rate.
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100,000before tax
10,000tax
110,000total
Guide / 02
Quick guide
- Choose whether to add tax to a net amount or remove tax from an inclusive total.
- Enter the relevant amount and tax percentage.
- Verify net plus tax equals total, then apply the rounding unit required by the local tax and invoicing rules.
Check
Validate the result
Adding 10% to 100 should give net 100, tax 10, total 110; removing 10% from 110 should reproduce those values.
Limits
Know the limits
This is single-rate arithmetic and does not determine exemptions, zero rating, multiple rates, withholding, or invoice compliance. Whole-number display rounding may differ from statutory rules.
Reference
Input and output example
Use the same units and settings when comparing your result with this example.
- Example input
Add tax · amount 100,000 · tax rate 10%- Result and interpretation
Before tax 100,000 · tax 10,000 · total 110,000
FAQ
Frequently asked
Is 10% of a tax-inclusive total the VAT amount?
No. At a 10% rate, divide the inclusive total by 1.1 to get the net amount and take the difference as tax. Multiplying the inclusive total by 10% overstates it.
Does my data leave this device?
No. This tool is designed to process its working data in your browser. Advertising may load separately, but your tool input is never sent with it.