A VAT calculator helps add VAT to a net price or remove VAT from a gross price. It separates the customer price into net amount and VAT amount, which is essential for pricing, invoices, and margin checks.
Add VAT example
If the net price is £50 and VAT is 20%, VAT is £10 and gross price is £60. Formula: gross = net × 1.20.
Remove VAT example
If the gross price is £60 and VAT is 20%, net price is £60 ÷ 1.20 = £50. VAT amount is £10. This is why subtracting 20% from £60 gives the wrong net price.
Gross
Correct net at 20%
VAT amount
£12
£10
£2
£60
£50
£10
£120
£100
£20
£240
£200
£40
Net vs gross
Net price is before VAT. Gross price is after VAT. VAT amount is the difference between them. For profit calculation, net revenue is usually the important business figure, not the gross customer payment.
Where calculators help
Checking invoice totals.
Setting VAT-inclusive prices.
Removing VAT from marketplace revenue.
Comparing net and gross prices.
Avoiding percentage mistakes.
Testing different VAT rates.
Common mistakes
Subtracting the VAT rate directly from gross.
Treating VAT as profit.
Using the wrong VAT rate.
Mixing VAT-inclusive and VAT-exclusive prices.
Ignoring platform fee calculations on tax-inclusive amounts.
Practical takeaway
Use a VAT calculator whenever you need to move between net and gross prices. For official reporting, registration, or VAT treatment, follow official rules or speak with an accountant.
FAQ
What does a VAT calculator show?
It can show net price, VAT amount, and gross price.
Can it remove VAT?
Yes. If a price includes VAT, the calculator can estimate the net amount and VAT portion.
Why not subtract 20% from gross?
Because VAT is 20% of the net price, not 20% of the gross price.
Should VAT be included in profit?
No. VAT collected should be separated from business profit.
Is VAT rate always 20%?
No. Rates and rules vary by country, product, and situation.
Business note: CalcBeacon eCommerce guides are educational and designed to explain calculations, pricing logic, and profitability checks. They are not tax, legal, accounting, or financial advice. For important business, VAT, tax, or platform compliance decisions, check official guidance or speak with a qualified professional.
