Question 1

How do you add sales tax to a price?

Accepted Answer

Multiply the price by the tax rate divided by 100, then add it to the original price. Example: $100 × 0.20 = $20 tax → $120 total.

Question 2

How do you remove VAT from a gross price?

Accepted Answer

Divide the gross price by (1 + rate ÷ 100). For 20% VAT, a £120 gross item becomes £120 ÷ 1.20 = £100 net, leaving £20 of VAT.

Question 3

Does the tool handle local currencies and VAT rates?

Accepted Answer

Yes — values are formatted with your browser locale via Intl.NumberFormat, and you can enter any tax or VAT percentage (US sales tax, EU VAT, Turkish KDV, German MwSt, etc.).

Question 4

Are my numbers stored or sent to a server?

Accepted Answer

No. Every CalcuFlow calculator runs 100% in your browser using JavaScript. Your inputs never leave your device — we don't log, transmit, or store any values you type.

Sales Tax & VAT Calculator

Sales Tax / VAT — answers & formulas

How do you add sales tax to a price?

How do you remove VAT from a gross price?

Does the tool handle local currencies and VAT rates?

Are my numbers stored or sent to a server?

The 17th-Century Tax Crisis