VAT Calculator

About VAT Calculator

How Do You Add and Remove VAT?

The formulas for adding and removing VAT are different. Adding VAT multiplies the net price by (1 + rate). Removing VAT divides the gross price by (1 + rate). Getting these mixed up is the single most common VAT calculation error.

Mode	You Have	Formula	Example (20% VAT)
Add VAT	Net (ex-VAT) price	Gross = Net x (1 + VAT% / 100)	£100 x 1.20 = £120 gross
Remove VAT	Gross (inc-VAT) price	Net = Gross / (1 + VAT% / 100)	£120 / 1.20 = £100 net
VAT amount	Either	VAT = Gross - Net	£120 - £100 = £20 VAT

Worked example - removing VAT: A receipt shows £594 including VAT at 20%. Divide £594 by 1.20 to get the net amount: £594 / 1.20 = £495. The VAT portion is £594 - £495 = £99. A common mistake would be taking 20% of £594 (= £118.80), which overstates the VAT by almost £20. The correct VAT fraction at 20% is 1/6 of the gross (16.67%), not 1/5 (20%).

Worked example - adding VAT: A freelancer quotes £2,500 net for a project. At 20% VAT, the gross invoice total is £2,500 x 1.20 = £3,000. The VAT line on the invoice reads £500. For generating complete invoices with line items and VAT, the invoice tax calculator handles multi-line breakdowns automatically.

Standard VAT and GST Rates by Country (as of April 2026)

Rates vary widely across the world. Hungary charges the highest standard VAT in the EU at 27%, while Switzerland sits at just 8.1%. The EU sets a minimum standard rate of 15%, and the average across all 27 member states is roughly 21.8% (Tax Foundation, 2026). Several countries raised their rates recently: Estonia moved from 22% to 24% in July 2025, Finland increased from 24% to 25.5%, and Romania went from 19% to 21%.

Country	Rate	Local Name	Currency
Hungary	27%	AFA	HUF
Sweden	25%	Moms	SEK
Denmark	25%	Moms	DKK
Ireland	23%	VAT	EUR
Italy	22%	IVA	EUR
Netherlands	21%	BTW	EUR
Spain	21%	IVA	EUR
United Kingdom	20%	VAT	GBP
France	20%	TVA	EUR
Germany	19%	MwSt / USt	EUR
India	18%	GST	INR
Japan	10%	Consumption Tax	JPY
Australia	10%	GST	AUD
Switzerland	8.1%	MWST / TVA	CHF
Canada	5%	GST (federal)	CAD

These are standard rates only. Most countries apply reduced rates on essentials like food, medicine, and children's clothing. Canada also adds provincial sales tax (PST) or harmonised sales tax (HST) on top of the 5% federal GST, bringing combined rates to 13-15% in some provinces. The US has no federal VAT at all - sales tax is set at state and local level, ranging from 0% in Delaware, Montana, Oregon, and New Hampshire up to over 10% combined in parts of Tennessee, Louisiana, and Arkansas.

UK VAT Rates and Thresholds

The UK charges three VAT rates, plus a category of exempt supplies. As of April 2026, the mandatory registration threshold remains at £90,000 of taxable turnover in any rolling 12-month period (gov.uk). The deregistration threshold is £88,000. HMRC collected £178.5 billion in net VAT revenue during 2024-25, making VAT the UK's third-largest tax after income tax and National Insurance.

Rate	Percentage	Applies To
Standard	20%	Most goods and services
Reduced	5%	Home energy, children's car seats, sanitary products
Zero-rated	0%	Most food, children's clothing, books, newspapers
Exempt	N/A	Insurance, education, health services, postal services

Zero-rated and exempt might sound the same, but they differ in an important way. A business selling zero-rated goods still charges VAT (at 0%) and can reclaim VAT on its own purchases. A business making only exempt supplies cannot register for VAT and therefore cannot reclaim input VAT. This distinction matters a lot for businesses that buy expensive equipment or materials.

UK VAT Registration and Schemes

Threshold	Amount	What Happens
Mandatory registration	£90,000 taxable turnover in rolling 12 months	Must register within 30 days and start charging VAT
Deregistration	Below £88,000 taxable turnover	Can apply to deregister
Voluntary registration	Any turnover	Can register to reclaim input VAT on purchases
Flat Rate Scheme	Under £150,000 turnover (ex-VAT)	Pay a fixed percentage of gross turnover instead of tracking input/output VAT
Flat Rate exit	Over £230,000 turnover	Must leave the Flat Rate Scheme

The Flat Rate Scheme simplifies accounting by replacing detailed input/output VAT tracking with a single percentage payment. The percentage depends on industry - for example, computer repair is 10.5%, management consultancy is 14%, and retailing of food or children's clothing is 4%. A "limited cost trader" (one who spends less than 2% of turnover on goods) pays a flat rate of 16.5% regardless of sector. Full details are in HMRC's VAT Notice 733.

How Does VAT Differ from Sales Tax and GST?

VAT, sales tax, and GST all tax consumption, but the collection mechanism differs. VAT is collected at every stage of the supply chain - the manufacturer, wholesaler, and retailer each charge VAT on their sale and reclaim VAT on their purchases. Only the final consumer bears the full tax burden. Sales tax (used in the US) is collected once at the point of final sale. GST in Australia, Canada, and India works similarly to VAT with multi-stage collection and input credits.

The maths for calculating the end-consumer price is the same regardless of which system a country uses. If the rate is 10%, a £100 item costs £110 whether it is labelled VAT, GST, or sales tax. The difference is in who collects it and how businesses handle the paperwork. For working out pricing with tax included, the profit margin calculator shows how VAT affects your margins on each sale.

Common VAT Mistakes

Mistake	Why It Happens	Correct Approach
Taking 20% of the gross to find VAT	Confusion between adding and extracting	Divide gross by 1.20, then subtract from gross (VAT = gross x 1/6)
Forgetting to add VAT to invoices	Quoting net prices without specifying ex-VAT	Always state clearly whether prices are ex-VAT or inc-VAT
Applying the wrong rate to zero-rated items	Assuming all items are standard-rated	Check HMRC guidance for your specific goods or services
Missing the registration deadline	Not monitoring rolling 12-month turnover	Track turnover monthly; register within 30 days of crossing £90,000
Charging VAT before registration	Trying to be proactive	Only charge VAT from the date shown on your VAT registration certificate

The VAT fraction shortcut is worth memorising. At 20%, the VAT portion of any gross price is always 1/6. At 5%, it is 1/21. This works because if the rate is r%, the fraction is r / (100 + r). So for 20%: 20/120 = 1/6. For a quick check: £600 gross at 20% VAT contains exactly £100 of VAT (£600 / 6).

VAT on Digital Services and Cross-Border Sales

Since July 2021, the EU's One-Stop Shop (OSS) system requires businesses selling digital services (SaaS, e-books, online courses, streaming) to EU consumers to charge VAT at the customer's local rate, not the seller's. A UK-based SaaS company selling to a customer in Germany charges 19% German VAT, not 20% UK VAT. The OSS lets businesses register in one EU member state and file a single quarterly return covering all EU sales, rather than registering separately in every country where they have customers.

The UK runs a similar scheme called the Non-Union VAT MOSS (Mini One-Stop Shop) for non-EU businesses selling digital services to UK consumers. For B2B digital sales where the customer provides a valid VAT number, the reverse charge applies and the seller does not charge VAT - the buyer accounts for it on their own return. Checking whether a customer's VAT number is valid can be done through the EU's VIES system or HMRC's online checker.

When Should a Small Business Register for VAT?

Registration is mandatory once taxable turnover exceeds £90,000 in any rolling 12-month period, but voluntary registration can make sense well before that. Businesses that sell mainly to other VAT-registered businesses (B2B) often benefit from early registration because their customers can reclaim the VAT anyway, and the business itself can reclaim input VAT on purchases, software subscriptions, and equipment. Businesses selling mainly to consumers (B2C) face a tougher choice - adding 20% to prices can reduce competitiveness against non-registered competitors.

The Flat Rate Scheme can help smaller businesses simplify their VAT admin. Instead of tracking every purchase and sale, the business pays a flat percentage of gross turnover to HMRC. Rates range from 4% for retailers of food and children's clothing to 14.5% for architects and surveyors. In the first year of registration, businesses get an additional 1% discount on the flat rate. The scheme works best when a business has few input VAT costs - if spending heavily on materials or stock, the standard VAT scheme usually saves more money because it allows full input VAT recovery.

For building full invoices with multiple line items and automatic VAT calculations, see the invoice generator. To understand how VAT affects your per-unit economics, the markup calculator shows the relationship between cost, markup, and selling price before and after tax.

Sources

• gov.uk - VAT rates (standard, reduced, zero)
• gov.uk - VAT registration thresholds
• HMRC - VAT Notice 733: Flat Rate Scheme for Small Businesses
• Tax Foundation - VAT Rates in Europe
• European Commission - VAT One Stop Shop (OSS)
• European Commission - VIES VAT number validation