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VAT / Sales Tax Calculator

Quickly add VAT to a net (ex-tax) amount or reverse a tax-inclusive (gross) price into net and VAT. Includes common European rate presets including Portugal 23% / 13% / 6%.

Understanding vat / tax

VAT and sales-tax tools either add tax to a net price or extract tax from a gross (tax-inclusive) price. The algebra is simple; the rate you choose must match your jurisdiction.

Good for

  • Converting net ↔ gross around a known VAT/sales-tax rate
  • Double-checking a simple invoice line
  • Learning how inclusive pricing embeds tax

Try the calculator

VAT / Sales Tax Calculator

Add tax to a net amount or extract tax from a gross (tax-inclusive) price

Direction

$
%

Common rates

Result

$123.00

Net $100.00 + VAT $23.00 = Gross $123.00

Gross = net × (1 + rate/100)

Net

$100.00

VAT

$23.00

Gross

$123.00

Quickly add VAT to a net (ex-tax) amount or reverse a tax-inclusive (gross) price into net and VAT. Includes common European rate presets including Portugal 23% / 13% / 6%. Read related guides.

Add versus extract

Add: gross = net × (1 + rate/100). Extract: net = gross ÷ (1 + rate/100), VAT = gross − net. Mixing the directions is a frequent invoicing error.

Presets (such as common European rates) are shortcuts only. Reduced rates, exemptions, and place-of-supply rules can change what you owe — confirm with official guidance or an accountant.

Invoices and receipts

If a receipt shows a tax-inclusive total, use extract mode to see the pre-tax base. If you priced a service ex-VAT, use add mode before billing a client who expects a gross total.

Not a filing substitute

This calculator does not submit returns, handle OSS/IOSS, or decide reverse-charge treatment. It is an arithmetic helper for education and quick checks.

Worked examples

Example calculations for VAT / Tax
QuestionAnswer
Add 23% VAT to $100 netVAT $23 · Gross $123
Extract 23% from $123 grossNet $100 · VAT $23
Add 20% VAT to $50VAT $10 · Gross $60

Formula reference

GoalFormula
Add VATgross = net × (1 + rate/100)
Extract VATnet = gross ÷ (1 + rate/100)

FAQ — VAT / Tax

How do I add VAT to a price?
Gross = net × (1 + rate/100). Example: $100 + 23% VAT = $123.
How do I remove VAT from a gross price?
Net = gross ÷ (1 + rate/100). VAT = gross − net. Example: $123 including 23% VAT → net $100.

Educational tool only — not tax, legal, or financial advice. Contact us with corrections.

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