VAT, or value added tax, is a consumption tax charged on the sale of goods and services at each stage of the supply chain, in which businesses collect tax on their sales and deduct the tax paid on their purchases. In cross-border commerce, VAT determines which country’s rate applies to an online order, who must collect it and how it is reported, which makes it one of the central compliance topics for e-commerce sellers.
The economic burden of VAT falls on the final consumer, while businesses act as collectors for the tax authority. More than 170 countries use VAT or a similar goods and services tax, but rates, thresholds and rules for online sales differ considerably.
How VAT works through the supply chain
VAT is collected in fractions at every stage. Each registered business charges output VAT on its sales, deducts the input VAT it paid on business purchases and pays the difference to the tax authority. The tax therefore applies only to the value added at each stage, and the total collected equals the tax on the final retail price.
| Stage | Net sale price | Output VAT | Input VAT deducted | VAT paid to authority |
|---|---|---|---|---|
| Manufacturer | 100 | 20 | 0 | 20 |
| Wholesaler | 150 | 30 | 20 | 10 |
| Online retailer | 250 | 50 | 30 | 20 |
| Consumer | Pays 300 in total | Not applicable | Cannot deduct | Bears the full 50 |
This mechanism explains why business buyers with valid VAT registration can usually recover VAT, while consumers cannot. For an online store, it also means that VAT is not revenue: prices shown to consumers usually include VAT, and the tax portion belongs to the authority.
VAT rules for cross-border online sales
Modern VAT systems apply the destination principle to online sales to consumers: the tax is due in the country where the buyer receives the goods or services. This prevents sellers from gaining an advantage by locating in low-rate countries, but it creates registration and reporting duties abroad.
In the European Union, the e-commerce VAT package of July 2021 introduced an EU-wide threshold of 10,000 euros for cross-border sales to consumers. Above it, the seller charges the VAT of each buyer’s member state and can declare it through the One-Stop Shop (OSS) instead of registering in every country. For imported goods in consignments up to 150 euros, the Import One-Stop Shop (IOSS) lets the seller collect VAT at checkout so the parcel clears customs without further charges.
| Scheme or rule | Applies to | Effect |
|---|---|---|
| OSS (Union scheme) | Intra-EU sales of goods and services to consumers | One quarterly return for all EU destination VAT |
| IOSS | Imported consignments up to 150 euros | VAT collected at checkout, faster customs clearance |
| Marketplace deemed supplier | Certain sales facilitated by marketplaces | Marketplace collects and remits the VAT |
| Reverse charge | B2B sales to VAT-registered buyers | Buyer accounts for the VAT, seller invoices without it |
| UK low-value import rule | Goods up to 135 pounds sold into the UK | Seller or marketplace charges UK VAT at sale |
Rates, invoices and pricing parameters
VAT rates vary by country and by product category. EU law sets a minimum standard rate of 15 %, and standard rates across member states range roughly from 17 % to 27 %, with reduced rates for categories such as food, books or medicines that each country defines differently.
| Parameter | What to configure | Common source of error |
|---|---|---|
| Tax rate per destination | Standard and reduced rates per country | Using the seller’s home rate for all buyers |
| Product tax class | Category mapping for reduced rates | Books or children’s goods taxed at standard rate |
| Price display | Prices including VAT for consumers | Showing net prices that rise at checkout |
| Buyer type | B2C versus B2B with VAT ID validation | Applying reverse charge without a valid VAT ID |
| Invoice content | Seller and buyer VAT IDs, rate, tax amount | Invoices that the buyer cannot use for deduction |
Stores that sell into many countries often keep one gross price across markets and absorb rate differences in the margin. Others calculate net prices and show different gross prices per country. Both approaches are legitimate, but the choice must be consistent in the catalog, the checkout and the product feeds.
VAT compared with sales tax and import duty
VAT is often confused with sales tax and import duty, but the three taxes differ in where they are charged and who can recover them. The United States, for example, uses state and local sales taxes rather than a VAT.
| Tax | Charged on | Recoverable by businesses |
|---|---|---|
| VAT | Every stage of supply, on value added | Yes, through input VAT deduction |
| Sales tax | Final retail sale only | Not applicable, businesses buy tax-exempt for resale |
| Import duty | Goods entering a customs territory, by tariff code and origin | Generally no, it is a cost |
Common VAT mistakes in online selling
- Missing the distance-selling threshold and continuing to charge home-country VAT on foreign sales.
- Not validating B2B VAT IDs before applying the reverse charge.
- Forgetting VAT on shipping charges, which usually follow the VAT treatment of the goods.
- Delivered-duty-unpaid imports that surprise buyers with VAT and handling fees at delivery, leading to refused parcels.
- Weak records: destination VAT rules require evidence of the buyer’s location to be kept for several years.
The short version
VAT is a tax added to the price of most things people buy. The shop collects it from the customer and passes it on to the government.
When an online shop sells to another country, the question becomes whose tax applies. In most cases, it is the tax of the country where the customer lives. The shop must charge the right rate and report it correctly.
Where it makes a difference
A German online store selling organic skincare grows its sales to France, Italy and the Netherlands. Once its total cross-border EU sales to consumers pass 10,000 euros in a year, it must charge French, Italian and Dutch VAT rates instead of the German rate.
Rather than registering in each country, the store joins the One-Stop Shop, configures destination rates in its platform and keeps one gross price for all markets. Each quarter it files a single OSS return, and the German tax authority distributes the tax to the other member states. The result is correct VAT for every buyer with one reporting process.