VAT Calculator

How VAT Is Calculated in the UK (20% Standard Rate)

Value Added Tax is the consumption tax HMRC layers on top of most goods and services sold in the UK. The standard rate is 20% and has been since January 2011. A reduced rate of 5% applies to a narrow set of supplies including domestic fuel and power, children's car seats, and mobility aids installed in the homes of people aged 60 and over. A zero rate of 0% covers most food sold for home consumption, books, newspapers, children's clothing, and most public transport fares. A separate exempt category covers insurance, most financial services, education provided by an eligible body, and postal services from Royal Mail's universal service.

The difference between zero-rated and exempt is the part most people get wrong. Zero-rated supplies sit inside the VAT system at 0%, so a business that sells them can still reclaim VAT on its costs. Exempt supplies sit outside the VAT system entirely, which means no VAT is charged but no input VAT can be recovered on related expenses either. That distinction decides whether VAT registration helps or hurts a small business.

From April 2024 the compulsory VAT registration threshold rose from £85,000 to £90,000 of VAT-taxable turnover in any rolling 12-month period. The deregistration threshold sits at £88,000. Businesses below the threshold can register voluntarily, which is sometimes worthwhile when most customers are themselves VAT-registered and the input VAT on stock or equipment is significant.

Making Tax Digital for VAT has been mandatory for every VAT-registered business since April 2022, regardless of turnover. Returns must be filed using compatible software that links directly to HMRC, and digital records of every sale and purchase have to be kept. The old portal-based VAT return is gone. Whichever rate you charge, the calculator on this page handles the maths the same way HMRC does on Notice 700/12: net multiplied by the rate as a decimal gives the VAT element, and gross divided by one plus the rate as a decimal gives you back to net. Use it for invoices, supplier receipts, quote-building and quarterly return prep.

How to Add or Remove VAT From Any Amount

Enter the figure you are working with, decide whether you need to add VAT to a net price or strip VAT out of a gross price, then choose the rate. The calculator returns the net amount, the VAT element and the gross total in pounds and pence so you can drop them straight into an invoice, a quote, or a VAT return. For a typical UK invoice you will be adding 20% to a net day rate or product price. For a supplier receipt you will usually be removing 20% from the gross figure to find the reclaimable input tax. The reduced 5% rate applies to a narrow set of supplies including domestic gas, domestic electricity and child car seats. The 0% rate applies to most food, books, children's clothing and public transport. Pick the rate that matches the supply and the calculator does the rest. Always cross-check borderline categories against HMRC Notice 700 before relying on the figure for a VAT return.

1. Enter the monetary amount in pounds and pence.
2. Choose whether you are adding VAT to a net amount or removing VAT from a gross amount.
3. Select the VAT rate: 20% standard, 5% reduced, 0% zero-rated, or a custom rate for non-UK invoices.
4. Press Calculate to see the net, VAT and gross figures broken out.
5. Copy the figures into your invoice template, accounting software, or VAT return working papers.
6. Save or screenshot the result if you need a record of how a borderline figure was derived.

VAT Calculation Formulas (Adding, Removing, Finding the Net)

The formula used: VAT = Net × (Rate / 100). To remove VAT: Net = Gross / (1 + Rate / 100)

VAT Calculation Examples for Common Prices

Adding 20% VAT to £500: VAT = £100. Gross = £600. Removing 20% VAT from £600: Net = £500. VAT = £100.

When You Need to Calculate VAT (Invoicing, Pricing, Expenses)

You must register for VAT once your VAT-taxable turnover passes £90,000 in any rolling 12-month period, or when you reasonably expect it to exceed £90,000 in the next 30 days alone. The threshold rose from £85,000 in April 2024 and applies UK-wide. Late registration triggers a failure-to-notify penalty calculated as a percentage of the VAT due from the date you should have registered, plus interest, so monitor your rolling turnover monthly once you reach roughly £75,000.

Voluntary registration below the threshold can pay off when most of your customers are themselves VAT-registered businesses that can reclaim the VAT you charge them. In that scenario the 20% you add to invoices is invisible to the buyer, but you get to recover input VAT on stock, equipment, software, fuel and professional fees. A consultant with a £40,000 laptop-and-software refresh in year one might save £8,000 by registering early.

Voluntary registration hurts when your customers are consumers or other unregistered small businesses. Adding 20% to a service the customer cannot reclaim either forces you to absorb it (a 16.7% margin hit) or makes you uncompetitive against unregistered rivals. A self-employed cleaner serving households would rarely register voluntarily for that reason.

Three simplified schemes ease the admin once you are registered. The Cash Accounting Scheme lets businesses with VAT-exclusive turnover under £1.35 million account for VAT when invoices are paid rather than when they are issued, which protects cash flow when customers pay late. The Annual Accounting Scheme replaces four quarterly returns with one annual return plus interim payments on account. The Flat Rate Scheme, available below £150,000 of VAT-exclusive turnover, lets you pay a fixed percentage of gross turnover and skip the line-by-line input VAT recovery — but limited-cost traders pay 16.5%, which leaves almost nothing of the VAT charged, so model it carefully before joining.

Whichever route you pick, registration is now done online via the Government Gateway and the certificate usually arrives within 30 working days. Backdate carefully if you have been over-threshold for several months — HMRC will ask.

VAT Rates and Registration Thresholds

Standard, Reduced, and Zero-Rated VAT Compared

VAT Tips for Small Businesses and Freelancers

• Reclaim input VAT only on purchases used for taxable business activities and keep a valid VAT receipt that shows the supplier's VAT registration number, the tax point date and the VAT amount.
• For purchases under £250 gross a simplified VAT receipt is acceptable and does not need to show your business name — useful for fuel, parking and small consumables.
• Apportion VAT on mixed-use costs such as a home office broadband line. HMRC expects a fair and reasonable basis, usually a percentage of business use that you can justify if asked.
• Reclaim VAT on assets you owned before registration if you still hold them and they are used in the business — up to four years for goods and six months for services.
• Use the bad debt relief rules to recover output VAT on invoices that are more than six months overdue and have been written off in your accounts.
• Keep mileage logs to support the fuel scale charge or actual-use VAT recovery on company car fuel — HMRC routinely challenges fuel reclaims with no log.
• Set a Direct Debit for VAT payments — it gives you three extra working days to pay and avoids a missed-payment penalty point under the post-2023 regime.
• Reconcile Box 6 (total sales ex VAT) against your turnover figure in the year-end accounts. A persistent gap is one of HMRC's top desk-check triggers.
• Use the Annual Accounting Scheme if quarterly admin is eating your time and your turnover is under £1.35 million — one return a year, monthly or quarterly payments on account.
• Reclaim VAT on staff entertainment but not on customer entertainment. The distinction is strict and one of the most commonly disallowed reclaims at inspection.

VAT Errors That Trigger HMRC Penalties

• Subtracting 20% from a gross price instead of dividing by 1.20. Subtracting 20% from £120 gives £96; the correct net is £100.
• Charging 20% VAT on zero-rated supplies such as cold takeaway food, children's clothing or printed books — corrections trigger reissued invoices and credit notes.
• Continuing to trade above £90,000 of rolling turnover without registering. The failure-to-notify penalty is a percentage of the VAT due from the date registration should have started.
• Reclaiming input VAT on customer entertainment, on cars used for any private mileage (with limited exceptions), or on goods bought wholly for private use.
• Applying the Flat Rate Scheme percentage to net turnover instead of gross — the FRS is always calculated on the VAT-inclusive figure.
• Missing the 16.5% limited-cost trader rate when joining the Flat Rate Scheme. If goods purchases are under 2% of turnover (or under £1,000 a year), you must use 16.5% regardless of sector.
• Filing the VAT return outside MTD-compatible software. Manual entry into the old portal has been blocked since November 2022 and will trigger a default surcharge equivalent.
• Forgetting the reverse charge on services bought from overseas suppliers — the VAT must be self-accounted for in Boxes 1 and 4 even though no money changes hands.
• Treating exempt supplies as zero-rated and reclaiming input VAT on related costs. This is one of the most common adjustments HMRC makes during a compliance check.
• Rounding inconsistently across the return — HMRC requires either rounding to the nearest penny or rounding down on every line, not a mix.
• Missing the payment deadline. VAT returns and payment are due one calendar month and seven days after the period end (e.g. quarter ending 31 March is due 7 May).