Use this reverse VAT calculator to remove VAT from a total amount and work out the net price before VAT. It is ideal for UK businesses, tradespeople and anyone who needs to reverse-calculate VAT quickly and accurately.
Reverse VAT Calculator
Reverse VAT Calculator
Results
Net Amount (Excluding VAT): £0.00
VAT Amount: £0.00
How to Use This Reverse VAT Calculator
Enter the total amount including VAT, then enter the VAT rate. The calculator will instantly show the net amount excluding VAT and the VAT portion.
What Is a Reverse VAT Calculator?
A reverse VAT calculator works backwards from a VAT-inclusive amount. Instead of adding VAT to a net price, it removes VAT from the total and shows you the original amount before VAT was applied.
This is useful when you receive a price that already includes VAT and want to know the underlying cost before tax.
Reverse VAT Formula
To remove VAT from a total amount, divide the gross amount by 1 plus the VAT rate.
For example, if the total is £120 including 20% VAT:
- Net amount = £120 ÷ 1.20
- Net amount = £100
- VAT amount = £20
This reverse VAT calculator does that instantly without manual calculation.
Example Reverse VAT Calculation
If your total amount including VAT is £240 and the VAT rate is 20%:
- Net Amount: £200
- VAT Amount: £40
This helps you see the original price before VAT was added.
When a Reverse VAT Calculator Is Useful
A reverse VAT calculator is useful when:
- checking supplier invoices
- working backwards from quoted prices
- reviewing receipts
- identifying VAT on purchases
- confirming net costs before bookkeeping
It is especially useful for builders, contractors, electricians, plumbers and small businesses that regularly deal with VAT-inclusive prices.
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Learn More About VAT
If you want to understand how VAT affects pricing, quotes and accounting, read more at TradesInfo.co.uk below.
Managing Your Business Finances
Pricing jobs and calculating VAT is only part of running a successful trade business. To stay on top of your finances, you also need the right tools and guidance.
👉 Best accounting software for tradespeople
👉 Accounting for plumbers (UK guide)