VAT calculations help separate net price, VAT amount, and gross customer price. This is important because VAT collected from customers is not the same as profit. If you treat VAT-inclusive revenue as business income, your margin can look much better than it really is.
Adding VAT
To add VAT, multiply the net price by the VAT rate, then add the VAT amount to the net price. At 20% VAT, a £100 net price becomes £120 gross because VAT is £20.
Removing VAT
To remove VAT from a VAT-inclusive price, divide the gross price by 1.20 for a 20% VAT rate. A £120 VAT-inclusive price contains £100 net price and £20 VAT.
Gross price
VAT rate
Net price
VAT amount
£120
20%
£100
£20
£60
20%
£50
£10
£24
20%
£20
£4
£12
20%
£10
£2
Why VAT affects margin
If a seller receives £120 from a customer and £20 is VAT, the business does not have £120 of true revenue for margin purposes. The net revenue is £100 before other costs. This distinction is essential for pricing and profit analysis.
VAT-inclusive pricing
Consumer-facing prices are often VAT-inclusive in many contexts. That means the displayed price already contains VAT. The seller needs to back out VAT before calculating true revenue and margin.
Common mistakes
Treating VAT collected as profit.
Adding 20% VAT and then removing it by subtracting 20% from gross.
Comparing VAT-inclusive and VAT-exclusive prices incorrectly.
Forgetting platform reports may show tax separately.
Ignoring VAT when setting retail prices.
Practical takeaway
Always separate net revenue, VAT, fees, shipping, product cost, and profit. For compliance, registration, rates, exemptions, or cross-border rules, use official guidance or a professional accountant.
FAQ
What is VAT?
VAT is a value-added tax applied in many countries, including the UK and EU systems.
Is VAT profit?
No. VAT collected may need to be paid to the tax authority and should not be treated as business profit.
How do I add VAT?
Multiply the net price by the VAT rate and add it to the net price.
How do I remove VAT from a VAT-inclusive price?
Divide the gross price by 1 plus the VAT rate as a decimal to find the net price.
Is this tax advice?
No. VAT rules vary, so use official guidance or a qualified accountant for decisions.
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.
