You pay VAT on nearly every purchase in the UK, EU, and about 170 other countries — yet it’s one of the least understood taxes around. Even people who deal with it professionally sometimes get confused about who’s actually paying it, why businesses can reclaim it, and what the “reverse charge” is.
Here’s the whole system in plain English.
What VAT is
VAT stands for Value Added Tax. It’s a consumption tax — a tax on spending, not on income or profit. In most countries a percentage (20% in the UK, 19–27% in the EU) gets added to the price of most goods and services when they’re sold.
But here’s the twist that makes VAT unusual: it’s charged at every stage of the supply chain, not just at the final sale. That sounds like double (or quadruple) taxation, until you realise businesses can reclaim the VAT they pay on their purchases.
A four-stage example
Follow a wooden chair from forest to living room, with a 20% VAT rate applied at every step.
Stage 1: Sawmill sells timber to a furniture factory.
- Timber cost: £100
- VAT charged: £20
- Factory pays £120
The sawmill owes HMRC (the UK tax authority) the £20 it collected. But it also paid VAT to its suppliers (fuel, chainsaws, electricity) — say, £8. So the sawmill remits £20 − £8 = £12 to HMRC. It only pays tax on the value it added.
Stage 2: Factory makes chairs, sells to wholesaler.
- Chair cost: £300
- VAT charged: £60
- Wholesaler pays £360
The factory owes HMRC £60 in output VAT, but reclaims the £20 input VAT it paid on the timber. Net remittance: £60 − £20 = £40. Again, only on the value the factory added (£300 − £100 = £200 of value × 20% = £40).
Stage 3: Wholesaler distributes to a retail shop.
- Wholesale price: £500
- VAT charged: £100
- Shop pays £600
Wholesaler remits £100 − £60 = £40.
Stage 4: Shop sells to a consumer.
- Retail price: £800
- VAT charged: £160
- Consumer pays £960
Shop remits £160 − £100 = £60.
Total VAT collected by HMRC: £12 + £40 + £40 + £60 = £152. That equals 20% of the final £760 net price — which is exactly what the consumer paid on top. The consumer bore the entire tax; every business in the chain was just a collection agent.
Why the reclaim mechanism matters
Without the input-VAT reclaim, prices would cascade — VAT on VAT on VAT. A £100 raw material would end up with £600+ of embedded tax by the time it reached a shelf. The reclaim system ensures VAT is only paid on the final consumer sale, no matter how many stages the product passed through.
This is also why VAT is often called a “neutral” tax for businesses: as long as you’re VAT-registered and your customer is too (or is a consumer paying the same VAT), you’re not out of pocket. You collect from customers, deduct what you paid to suppliers, and remit the difference.
Who has to register for VAT
Every country sets its own threshold. In the UK you must register if your taxable turnover exceeds £90,000 (2024 threshold) in any rolling 12-month period. Below that, registration is optional — and voluntary registration has trade-offs:
Pros of voluntarily registering:
- Reclaim VAT on business purchases (laptops, subscriptions, tools)
- Look bigger/more established to B2B customers
- No need to re-price if you cross the threshold later
Cons:
- Your prices to non-registered customers effectively go up by 20% (or you eat the VAT out of your margin)
- Quarterly filing overhead
- Need proper accounting for input/output VAT
For most B2B businesses, voluntary registration is a no-brainer. For B2C businesses under the threshold, it’s usually not.
Add VAT vs remove VAT (reverse VAT)
Two everyday calculations that trip people up:
Adding VAT — you have a net price and want the gross:
Gross = Net × (1 + rate/100)
Example: £250 net + 20% VAT = £250 × 1.20 = £300 gross.
Removing VAT (reverse VAT) — you have a gross price and want to know the net and VAT:
Net = Gross ÷ (1 + rate/100) VAT = Gross − Net
Example: £300 gross at 20% → Net = £300 ÷ 1.20 = £250, VAT = £50.
Common mistake: subtracting 20% instead of dividing. £300 × 0.80 = £240 — which is wrong. The multiplicative inverse of “add 20%” is “divide by 1.20”, not “multiply by 0.80”. Use our VAT calculator if you find yourself doing this often.
The reverse charge (B2B cross-border)
You’ll see “reverse charge” on invoices when a UK business sells to an EU business, or vice versa. The seller invoices without VAT, and the buyer accounts for both the output VAT and input VAT on their own return — netting to zero, but making the transaction visible to their tax authority.
Reverse charge exists because charging VAT across borders would require every business to be registered in every country they sell to — impractical. The buyer’s country instead gets the reporting.
Reduced and zero rates
Not everything is taxed at the standard rate. Most countries have reduced rates for:
- Food (basic groceries, often 0% or a low reduced rate)
- Children’s clothes (0% in the UK)
- Books, newspapers, e-books (5% in Germany, 0% in the UK, 21% in Denmark)
- Public transport (0% in the UK, 7% in Germany)
- Hospitality (13.5% in Ireland vs. 23% standard)
- Domestic energy (5% in the UK vs. 20% standard)
The specific list varies wildly by country — always check with the local tax authority for your goods.
What about US sales tax?
The US doesn’t have federal VAT. It has sales tax — a similar-looking but mechanically different tax:
- Charged only at the final consumer sale (not at every stage)
- Rate set by state and often layered with county/city taxes
- No reclaim mechanism (which is why business-to-business sellers charge tax and their customers grumble)
- Wildly complex nexus rules that determine when out-of-state sellers must collect
If you’re pricing for both the US and UK/EU markets, treat them as completely separate systems. See our sales tax calculator for US-side math.
Quick VAT reference
| Country | Standard | Reduced |
|---|---|---|
| 🇬🇧 United Kingdom | 20% | 5% |
| 🇮🇪 Ireland | 23% | 13.5% / 9% |
| 🇩🇪 Germany | 19% | 7% |
| 🇫🇷 France | 20% | 10% / 5.5% |
| 🇪🇸 Spain | 21% | 10% |
| 🇮🇹 Italy | 22% | 10% / 5% |
| 🇳🇱 Netherlands | 21% | 9% |
| 🇸🇪 Sweden | 25% | 12% / 6% |
| 🇭🇺 Hungary | 27% | 18% / 5% |
Rates change occasionally — always double-check with your national tax authority before pricing goods.
The takeaway
VAT looks intimidating because the mechanics (charge at every stage, reclaim inputs, reverse charge for cross-border) are unfamiliar. But the outcome is simple: the consumer bears the tax, businesses just collect it. If you’re VAT-registered, you’re basically a middleman for the tax authority — collecting, deducting, and remitting a small share of every transaction.
If you’re pricing products or issuing invoices, our VAT calculator handles both add-VAT and remove-VAT calculations for every EU country and the UK. For US sellers dealing with pre-tax/post-tax pricing, the sales tax calculator is the equivalent.