Why can't I just subtract the VAT percentage directly from an inclusive total?

Subtracting 20% directly from £600 would give the wrong net amount, because the 20% needs to be calculated relative to the original net price, not the inclusive total. The correct method divides the inclusive total by (1 + rate/100) to work backward to the accurate net amount — this tool applies that correct formula automatically.

What VAT rate should I use?

VAT rates vary by country and by the type of goods or service — the presets here (20%, 5%, 0%) reflect common UK rate bands, but other countries use different standard and reduced rates entirely. Check the applicable rate for your specific jurisdiction and item category.

What does zero-rated (0%) VAT mean?

A zero-rated item is technically still within the VAT system but taxed at 0%, which is different from being VAT-exempt entirely — the distinction matters for businesses when it comes to reclaiming VAT on their own purchases, even though the customer-facing price effect looks the same.

How is this different from the GST Calculator?

The core add/remove tax math is the same underlying calculation, but GST (used in India and several other countries) typically splits the tax into CGST and SGST components for domestic transactions — a distinction VAT systems don't use. This tool is built for VAT's simpler single-tax-line structure.

Does this tool file or report VAT to a tax authority?

No — this is a calculation tool only, for quoting prices, checking figures, or reconciling records. Actual VAT filing and reporting requires proper accounting records and, in most jurisdictions, registered VAT software or a tax professional.

UK VAT Calculator — Free Online Tool

Features

Runs entirely in your browser
Privacy-first — your data is never uploaded
Real-time, instant results
100% free, no sign-up required
Works on desktop, tablet, and mobile
No installation needed

Who uses this tool?

Small business ownersFreelancersAccountantsInvestorsStudents

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About UK VAT Calculator

VAT (Value Added Tax) calculations run in two directions that are easy to mix up: adding VAT to a net price to find the final amount a customer pays, and the reverse — extracting the net price and VAT amount from a VAT-inclusive total, which isn't as simple as subtracting the tax percentage directly from the total.

This tool handles both directions correctly. "Add VAT" takes a net amount (excluding tax) and applies the rate directly to calculate the VAT amount and gross total. "Remove VAT" takes a VAT-inclusive total and works backward — dividing by (1 + rate/100) to correctly extract the original net amount, avoiding the common mistake of subtracting the percentage straight from the inclusive total, which produces a wrong result.

Rate presets cover common VAT structures — 20% (the UK's standard rate, also common across much of the EU), 5% (a typical reduced rate for certain goods and services), and 0% (zero-rated items) — alongside a custom field for any other rate, since VAT rates and which goods/services fall into which bracket vary significantly by country.

This is useful for quoting VAT-inclusive prices to customers, checking a receipt or invoice's VAT breakdown, or reconciling accounting records where the net amount and VAT need to be separated out from a total that only shows the combined figure.

How it works

Choose Add VAT or Remove VAT. Add calculates from a net price; Remove extracts the net from a VAT-inclusive total.
Enter the amount and VAT rate. Pick a common preset rate or enter a custom percentage.
View the breakdown. Net amount, VAT amount, and gross total, all instantly.

Examples

Adding VAT to a net price

Input

£500 net amount, 20% VAT

Output

VAT: £100 — Gross total: £600

Removing VAT from an inclusive total