Get instant UK VAT calculations for net, gross and VAT amounts.
UK VAT Calculator
Add VAT · Remove VAT · Bulk Items · Invoice Summary
Add multiple items and calculate VAT for all at once.
No items added yet.
Use the form above to add line items.
Build a VAT invoice summary you can print or save.
Add line items above to generate your invoice preview.
- What VAT actually is (in plain English)
- The three UK VAT rates, explained with real examples
- The formula behind every calculation on this page
- Using the Simple Calculator to add or remove VAT
- Using the Bulk Items calculator for multiple products
- Building a VAT invoice with the Invoice Builder
- Do you actually need to register for VAT?
- Zero-rated vs VAT exempt — the difference that trips people up
- Quick VAT rate cheat sheet
- Frequently asked questions
What VAT actually is (in plain English)
Value Added Tax is a tax that gets added at nearly every stage a product or service moves through — from raw materials to the finished thing you buy. As a shopper you only really notice the last bit of it, tacked onto the price you pay. As a business owner, VAT is something you charge your customers (output tax) and something you pay on your own purchases (input tax), and the difference between the two is what gets handed over to HMRC.
It sounds fiddly the first time someone explains it to you, but the day-to-day maths is genuinely simple once it clicks. That's really all a vat calculator uk tool like this one is doing — it's just running the same two formulas, over and over, faster than you can type them into a phone calculator.
The three UK VAT rates, explained with real examples
There isn't just one VAT rate in the UK — there are three, and picking the wrong one is the single most common mistake people make when pricing goods or filling in a return. Here's how they break down:
| Rate | What it's for | Everyday examples |
|---|---|---|
| 20% Standard | The default rate. Applies unless a specific reduced or zero-rate rule applies. | Electronics, clothing (adult), takeaway hot food, most professional services, alcohol |
| 5% Reduced | A small list of goods and services the government treats as partly essential. | Domestic gas and electricity, children's car seats, mobility aids, energy-saving home improvements |
| 0% Zero | Still inside the VAT system (it gets reported), but charged at nil. | Most food, children's clothing, books and newspapers, public transport tickets |
One thing worth flagging early: zero-rated and VAT exempt are not the same thing, even though they both mean "no VAT charged." I've put a proper comparison further down the page in the zero-rated vs exempt section, because it genuinely affects what you can and can't reclaim.
The formula behind every calculation on this page
Every result the calculator above shows you — the Simple tab, the Bulk tab, the Invoice tab — comes down to two formulas. Once you know these, you can sanity-check any figure yourself without touching a spreadsheet.
Adding VAT (you have a net/pre-tax price)
Worked example — 20% standard rate
Worked example — 5% reduced rate
Removing VAT (you have a gross/tax-inclusive price)
Worked example — reversing a £600 gross price
Same £600, done the wrong way
You cannot get from a gross price back to net by subtracting 20%. VAT is calculated as 20% of the net, which works out to one-sixth of the gross — not one-fifth. So £600 minus 20% gives you £480, which is wrong by £20. Always divide by 1.20 (or 1.05 for the reduced rate) instead. This is exactly why a reverse vat calculator is worth using rather than doing it by subtraction in your head.
Here's a visual way to see where that £100 of VAT sits inside a £600 gross figure — it's a smaller slice than people expect:
Using the Simple Calculator to add or remove VAT
This is the tab you'll use most often, and it's built to answer one question at a time as fast as possible. Here's exactly what each part of it does:
- Pick a direction. "Add VAT" assumes the number you're about to type in is a net (pre-tax) amount. "Remove VAT" assumes it's a gross (tax-inclusive) amount, like a price you've already been charged.
- Choose your rate. Tap 20% Standard, 5% Reduced, or 0% Zero — or tap Custom % if you're working with a different rate entirely (handy for the EU, Ireland's 23%, or any non-standard figure your accountant has given you).
- Enter the amount and quantity. The quantity field is optional and defaults to 1 — useful if you're pricing ten identical units at once rather than typing the total yourself.
- Press Calculate VAT. You'll get the net, VAT, and gross figures side by side, plus a donut chart showing what share of the total is tax, and the exact formula used underneath so you can double-check it.
- Copy, save, or print. "Copy Result" puts a clean text summary on your clipboard ready to paste into an email or invoice. "Save to History" keeps your last five calculations on the page so you can flick between them.
If you're not sure which direction you need, ask yourself: "does this number already have VAT sitting inside it?" A price on a receipt, a quote a supplier sent you, or a total on a bank statement is almost always gross — use Remove VAT. A price you're building up yourself, from cost plus margin, is net — use Add VAT.
Using the Bulk Items calculator for multiple products
Most VAT calculators only ever handle one number at a time, which is fine until you've got a basket of fifteen different products at three different rates and no patience left to do it fifteen times. The Bulk Items tab is built for exactly that — a bulk vat calculator that lets you build a running list and calculates VAT for multiple items in one pass, with a live running total.
- Type a description for the line item — this is just for your own reference on the summary, so anything recognisable works.
- Enter the net price for that item, then pick its rate — 20%, 5%, 0%, or Custom if it needs its own specific percentage.
- Press + Add Item. It drops straight into the table below with its own net, VAT, and gross figures calculated instantly.
- Repeat for every product — mixed rates are completely fine in the same list, which is the whole point. A basket with a zero-rated food item, a standard-rated gadget, and a reduced-rate item will total correctly across all three.
- Check the TOTALS row at the bottom of the table for the combined net, VAT, and gross across everything you've entered, then use Copy Summary to grab it as text.
This is the part of the tool freelancers and small shop owners tend to reach for when quoting a job with several materials, or when double-checking a supplier invoice that's listing ten line items and expecting you to trust their arithmetic.
Building a VAT invoice with the Invoice Builder
If you're VAT-registered, HMRC expects specific details on any invoice you send to another VAT-registered business — it's not just a nice-to-have, it's what makes the invoice valid for input VAT to be reclaimed on the other end. The Invoice Builder tab turns your line items into a presentable summary with all of that covered, without needing separate invoicing software for a quick one-off job.
What a full VAT invoice needs to include
- A unique, sequential invoice number
- The date of issue (and the date of supply, if it's different)
- Your business name and address, plus your VAT registration number
- The customer's name and address
- A description of each good or service supplied
- The net amount, VAT rate, and VAT amount for each item
- The total amount payable, including VAT
Simplified invoice
- Used for smaller transactions
- Date of supply, description, VAT rate, and VAT-inclusive price
- Supplier's name, address, and VAT number still required
Full VAT invoice
- Required for most B2B transactions
- Full breakdown per line item — net, rate, VAT, gross
- Customer's full name and address included
- Fill in your business details — your name, the client's name, an invoice number, the date, your VAT number if you have one, and your payment terms.
- Add each line item the same way you would on the Bulk tab — description, net price, and rate (including Custom, if needed).
- Watch the preview build itself below the form, laid out like a real invoice with net, VAT, and grand totals calculated automatically.
- Print it or copy the summary straight from the action buttons — genuinely enough for a quick freelance invoice without opening separate software.
Do you actually need to register for VAT?
You're legally required to register once your taxable turnover — not profit, turnover — goes above the VAT registration threshold within any rolling 12-month period, or if you expect to cross it within the next 30 days on its own. Below that figure, registration is entirely your choice.
| Mandatory registration | Voluntary registration | |
|---|---|---|
| Who it applies to | Any business whose rolling 12-month taxable turnover exceeds the threshold | Any business below the threshold that chooses to register anyway |
| Why you'd do it | It's the law — no choice once you cross the line | Lets you reclaim VAT on business purchases and can look more established to clients |
| Trade-off | You must charge VAT on everything you sell from that point on | You'll need to charge VAT too, which can make your prices less competitive against non-registered rivals |
Plenty of freelancers register voluntarily well before they need to, purely so they can reclaim VAT on equipment, software subscriptions, and other running costs. It's worth a conversation with an accountant before deciding either way — this page (and the calculator above it) can tell you the numbers, but not whether registering suits your particular business.
Zero-rated vs VAT exempt — the difference that trips people up
Both mean the customer pays no VAT, so it's easy to assume they're interchangeable. They aren't, and the difference matters most when you're trying to reclaim VAT on your own costs.
| Zero-rated | VAT exempt | |
|---|---|---|
| Inside the VAT system? | Yes — taxable, just at 0% | No — sits outside it entirely |
| Reclaim VAT on related costs? | Yes, normally | Usually not, on costs tied to the exempt activity |
| Reported on your VAT return? | Yes | Generally excluded |
| Typical examples | Most food, children's clothing, books | Insurance, most education and health services, residential rent |
Quick VAT rate cheat sheet
A shortlist for the items people search for most when they're not sure which rate to pick:
Rates and categories change from time to time — this is a quick starting point, not tax advice. Check GOV.UK or your accountant for anything you're unsure about before invoicing a client.
Frequently asked questions
What is the VAT rate in the UK right now?
What's the difference between net and gross for VAT?
How do I calculate VAT from a gross amount?
How do I work out VAT backwards on a receipt?
Can this calculator handle a custom VAT rate?
What should a VAT invoice include?
Do I need to register for VAT as a small business?
Ready to run the numbers?
Jump back up to the calculator and try the Simple, Bulk, or Invoice tab with your own figures.
↑ Back to the calculatorThis guide is for general information only and isn't a substitute for professional tax advice. VAT rules and thresholds are reviewed periodically — always confirm the current position with HMRC or your accountant before making a business decision based on it.
No comments:
Don't add any Spam link in comment box.