UK VAT Calculator
Add VAT to a net amount or take VAT out of a gross one, at 20%, 5%, 0% or your own rate.
Open toolFree tools for UK businesses
Free Business Calculators and Tools for UK Businesses
Calculate VAT, manage invoices, understand business profits and make smarter financial decisions with our free online business tools.
No account needed · Works on mobile · Figures stay in your browser
VAT quick check
Standard 20%£
Enter numbers only — commas and £ signs are fine.
- Net amount
- £1,500.00
- VAT at 20%
- £300.00
- Total
- £1,800.00
Popular tools
The calculators UK businesses reach for most often. Each one shows its working, so you can check the answer against your own records.
Free Invoice Generator
Build a professional invoice with line items and VAT, preview it, then download a PDF or print it.
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Turn a selling price and a cost price into gross profit and a true profit margin percentage.
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Set a selling price from your cost plus a target markup, and see the margin it really leaves you.
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Find how many units you must sell to cover your fixed costs, and the revenue that represents.
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Work backwards from the income you want to the hourly and daily rate that actually delivers it.
Open toolBrowse by category
Five collections, each built around a job you actually have to do — not around a list of keywords.
VAT and Tax Tools
Add or remove VAT and understand how UK VAT rates apply to what you sell.
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Create a compliant, professional invoice you can send today — no account needed.
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Pricing, margins, markup and break-even — the numbers behind a profitable business.
View toolsFreelance and Contractor Tools
Turn the income you want to earn into the day rate and hourly rate you should charge.
View toolsGeneral Calculators
Everyday percentage maths for pricing, discounts, uplifts and comparisons.
View toolsWhy use our tools?
These are the tools we wanted when we were quoting jobs, chasing invoices and working out what to charge. Free, quiet and honest about their assumptions.
More about usYour figures stay with you
Calculations run in your browser. Invoice and bank details you type are never uploaded, transmitted or stored on our servers.
You see the working
Every tool shows the figures behind the answer — net, VAT, margin, rate — so you can check it rather than trust it.
Built for a phone in one hand
Large tap targets, numeric keypads and readable results, whether you are at a desk or on a site visit.
Free, without a sign-up
No account, no trial, no paywall on the basics. Open a tool, get your numbers and close the tab.
Business guides
Clear explanations of the arithmetic behind the tools, with worked examples and links to the official guidance.
Guide
How to Calculate VAT in the UK
The three VAT rates, how to add VAT to a net price, and why taking 20% off a gross figure gives the wrong answer.
Read the guideGuideHow to Add VAT to an Invoice
What a VAT invoice must show, how to lay out the VAT line, and how to handle mixed rates on a single invoice.
Read the guideGuideHow to Calculate Business Profit Margin
Gross and net margin explained, the formula, a worked example, and the numbers margin quietly leaves out.
Read the guideGuideWhat Is the Difference Between Markup and Profit Margin?
The same profit, expressed two ways — how they diverge as prices rise, and how to convert between them.
Read the guide