VAT calculator UK tools help builders, contracVAT calculator UK tools help builders, contractors and businesses quickly add or remove VAT from any amount.
Use this free VAT calculator UK to calculate VAT at 20%, 5% or any custom rate in seconds. Whether you’re pricing a job, sending an invoice or checking costs, this tool removes the guesswork.
This VAT calculator UK is designed for real-world use by tradespeople and UK businesses.
Enter your figures below to calculate VAT instantly.
🔢 VAT Calculator
💡 Tip: VAT can significantly impact your job pricing and profit margins.
Using a VAT calculator UK helps ensure your pricing is accurate and compliant.
👉 See the best accounting software for construction businesses UK
What is VAT?
VAT (Value Added Tax) is a tax applied to most goods and services in the UK.
Businesses registered for VAT must:
- charge VAT on sales
- pay VAT on purchases
- submit VAT returns to HMRC
The standard VAT rate in the UK is 20%, but some goods and services use reduced rates.
Common UK VAT Rates
- 20% (standard rate) – most goods and services
- 5% (reduced rate) – some home improvements, energy-saving materials
- 0% (zero rate) – certain goods like food and children’s clothing
How to calculate VAT
Add VAT to a price
To add VAT:
VAT = Net Price × VAT Rate
Example:
- Net = £100
- VAT (20%) = £20
- Total = £120
Remove VAT from a price
To remove VAT:
Net = Gross ÷ (1 + VAT Rate)
Example:
- Gross = £120
- VAT = £20
- Net = £100
Why VAT matters for tradespeople
If you’re a builder or contractor, VAT directly affects:
- your quotes
- your invoices
- your profit margins
- your cash flow
Incorrect VAT calculations can lead to:
- undercharging
- compliance issues
- unexpected tax bills
Our free VAT calculator UK removes guesswork and speeds up quoting and invoicing.
Example: VAT on a construction job
Let’s say:
- Materials = £800
- Labour = £400
- Total (net) = £1,200
VAT (20%) = £240
Total price = £1,440
If you forget VAT in your quote, you either:
- lose £240 profit
or - have to increase your price later
When should you use a VAT calculator?
Use this calculator when you are:
- pricing a job
- preparing a quote
- creating invoices
- checking supplier costs
- reviewing margins
It is especially useful for:
- builders
- electricians
- plumbers
- contractors
- small business owners
VAT and Making Tax Digital (MTD)
Most UK businesses must now comply with Making Tax Digital (MTD) rules.
This means:
- digital record keeping
- submitting VAT returns online
- using compatible software
👉 You can review official VAT guidance on HMRC:
https://www.gov.uk/vat
Related calculators
You may also find these useful:
- Profit Margin Calculator UK
- Markup Calculator UK
- Job Cost Calculator UK
- Labour Cost Calculator UK
- Full list of calculators
Related Guides
If you also want help with pricing, accounting and profitability, see:
CIS Accounting Software for Contractors UK
Best Accounting Software for Construction Businesses UK
Best Accounting Software for Contractors UK
Job Costing Software for Builders UK
FAQ
How do I calculate VAT in the UK?
Multiply the net amount by 20% (or the correct rate) to get VAT, then add it to the total.
What is the VAT rate in the UK?
The standard rate is 20%, with reduced rates of 5% and 0%.
How do I remove VAT from a price?
Divide the total by 1.2 (for 20% VAT) to get the net amount.
Do builders charge VAT?
Yes, most construction work is subject to VAT, although some work may qualify for reduced or zero rates.
Final word
A reliable VAT calculator UK helps you price jobs accurately, stay compliant and protect your profit.
For tradespeople and small businesses, getting VAT right is just as important as managing costs and margins.