The Ultimate UK VAT Guide (2026 Updated)
Value Added Tax (VAT) is a consumption tax placed on a product whenever value is added at each stage of the supply chain, from production to the point of sale. If you're a consumer in the UK, you pay VAT on most goods and services. If you're a business owner, understanding how to calculate, add, and remove VAT is a critical daily bookkeeping requirement.
Our Free VAT Calculator UK above allows you to effortlessly toggle between adding specific VAT percentages or extracting the VAT amount (reverse VAT calculation) from a total cost.
How to manually calculate adding 20% VAT
If you want to know the math behind our calculator, finding the gross amount when you only have the net is straightforward. To add the standard 20% UK VAT rate to a net figure:
- Method 1: Multiply your Net Amount by 1.20. (E.g., £100 × 1.20 = £120 Gross)
- Method 2: Divide your Net Amount by 100, multiply it by 20 to find the VAT element, then add it to the original Net Amount.
How to extract (remove) 20% VAT from a Gross Total
Reverse calculating VAT is slightly different and is a common pitfall. You cannot simply deduct 20% from the Gross Amount. To find the VAT-exclusive Net Amount from a VAT-inclusive Gross amount:
- Calculating the Net: Divide the Gross Amount by 1.20. (E.g., £120 ÷ 1.20 = £100 Net)
- Calculating the VAT Element only: Divide the Gross Amount by 6. (E.g., £120 ÷ 6 = £20 VAT)
Current UK VAT Rates
The UK government, via HMRC, currently dictates three main rates of VAT:
| VAT Rate | Percentage | Applies to |
|---|---|---|
| Standard Rate | 20% | Most goods and services (e.g., electronics, streaming services, consultancy). |
| Reduced Rate | 5% | Children's car seats, mobility aids for older people, some home energy forms. |
| Zero Rate | 0% | Most food, children's clothes, books, newspapers. (Input VAT can still be reclaimed). |
Exempt vs Zero-Rated: What's the difference?
It is a common misconception that "Exempt" and "Zero-Rated" mean the same thing. While both result in no VAT being charged to the final consumer, they have vastly different implications for a business's VAT returns.
Zero-Rated Goods are VAT-taxable; the rate just happens to be 0%. Because they are taxable, businesses selling zero-rated goods can register for VAT and reclaim the VAT they paid on their own expenses (Input VAT).
Exempt Goods are totally outside the VAT system. Examples include postage stamps, healthcare services, and insurance. If your business ONLY sells exempt goods, you cannot register for VAT, and therefore cannot reclaim VAT on your business expenses.
Frequently Asked Questions
When must I register for VAT in the UK?
You must register your business for VAT with HMRC if your VAT-taxable turnover exceeds the threshold over any rolling 12-month period. As of the 2025/2026 tax year, the VAT registration threshold is £90,000.
Is there a difference in VAT between Ireland and the UK?
Yes. While Northern Ireland has specific rules due to the Windsor Framework, the Republic of Ireland has its own set of VAT rates (Standard 23%, Reduced 13.5% and 9%). Our calculator specifically relies on UK HMRC rates.
Can I change the VAT rate in the calculator?
Absolutely! While the majority of queries rely on the 20% Standard UK Rate, you can instantly swap to 5% or 0% utilizing the segmented controls right above the result breakdown pane.