One Stop Shop for Czech web shops: one return for EU consumer VAT

A Czech web shop sells boots to a customer in Austria, a book to a reader in Germany and a subscription to someone in Poland. Until 2021, a seller doing that at any volume risked registering for VAT in each of those countries, with a separate return, a local rate and often a local accountant. The EU's One Stop Shop (OSS) was designed to end that. The domestic system is covered in Czech VAT explained.

The problem it solved

VAT taxes consumption, so for sales to consumers it is meant to end up with the country where the customer lives. For years, EU rules let small distance sellers charge home-country VAT up to a threshold set by each destination country, then required registration there once it was passed. A patchwork of national thresholds burdened small sellers and distorted competition. The 2021 e-commerce reform replaced them with a single EU-wide threshold for cross-border distance sales of goods, and made OSS the way to report tax above it.

One threshold

Under the rules in force since 1 July 2021, a seller established in one member state whose combined cross-border sales to consumers in other EU countries stay under EUR 10,000 a year can keep charging VAT of its home country (as of 2026; check the official source). Once the combined total passes that figure, VAT is due in the customer's country at that country's rate.

The combined figure covers distance sales of goods plus telecommunications, broadcasting and electronic services supplied to consumers. Sellers established in more than one state follow different rules.

What the scheme is

OSS is a simplification. Instead of registering in every country where you have customers, you register for OSS in your home state, which for a Czech business means the Czech Financial Administration. You file one quarterly OSS return listing sales by destination country and the rate that applies there, and make one payment to the Czech authority, which passes the money on.

There are three versions. The Union scheme covers intra-EU distance sales of goods and services supplied to consumers in other member states, along with certain domestic sales through marketplaces. The non-Union scheme is for businesses established outside the EU selling services to EU consumers. The import scheme (IOSS) covers distance sales of low-value goods imported from outside the EU, in consignments worth no more than EUR 150. A Czech seller shipping to EU consumers will mostly need the first and, if the goods ship from outside the EU, the third.

What it does not change

It is voluntary. A seller can instead register for VAT in each country, though few small businesses do. It covers consumer sales only; business-to-business supplies follow other rules, usually with the customer accounting for the VAT.

You still have to apply the right rate for each country and product, which means knowing the rates and classification of your goods in other member states. Each country keeps its own list of reduced rates and exemptions, and they differ. The European Commission publishes a table of rates, and national authorities explain their classification.

And OSS does not replace your Czech VAT return. Domestic sales, input VAT deductions and other transactions still go through the standard return, so if you are not yet a Czech VAT payer, check how OSS registration interacts with your status.

Filing and paying

The OSS return is filed quarterly, by the last day of the month after the quarter ends, with payment due by the same date (as of 2026; check the official source). A return is needed even in a quarter without sales. Amounts are reported in euros, with a conversion rule for other currencies, and errors are corrected in a later return within time limits. Filing is electronic through the Czech tax portal.

Records

An OSS seller must keep detailed records for ten years from the end of the year of the sale and be able to produce them electronically for any member state on request (as of 2026; check the official source). They cover the country of consumption, the goods or services, the date, the taxable amount, the rate applied and payment details. Evidence of where the customer is located matters most for services, and the rules specify what counts as proof.

On a marketplace, the platform can in some situations be treated as the supplier for VAT purposes, which changes who reports the sale. Read your platform's terms against the rule for your type of sale.

What changes for your shop software

OSS is a tax rule, but it lands on your checkout. The platform must know where each customer is, apply that country's rate to each product, and keep evidence of the location. For goods the destination of shipping is usually clear. For electronic services the rules set out what counts as proof, and a single data point such as an IP address is rarely a comfortable basis.

Many small sellers find the product classification the hard part. Each country keeps its own lists of reduced rates and exemptions, and a book, a food item or a child's garment can sit at different rates in different states. The European Commission publishes a table of rates, and national authorities explain their classifications. Build a spreadsheet of your ten best-selling items and their destination rates before you trust any plug-in.

Marketplaces add a final wrinkle. If you sell through a platform, the platform may in some situations be treated as the supplier for VAT, which changes who reports the sale. Read the platform's terms against the rule for your type of sale.

Where sellers slip

The common errors are reading the threshold as per country when it is one combined figure, charging Czech VAT after crossing it instead of the destination rate, not recording evidence of customer location, skipping the OSS return in a quarter with no sales, and treating a marketplace sale as their own without checking.

Pull the last 12 months of sales and sort them by customer country. If cross-border consumer sales are near the EU threshold, talk to your accountant about registering for OSS before you pass it. Then check whether your shop software can apply destination rates automatically. That is the practical hinge: whether your tax settings can cope with 26 other countries' VAT systems.

Where to check

The Czech Financial Administration runs the OSS registration and return through its tax portal and explains the scheme on its English pages. The European Commission publishes the table of VAT rates in all member states. Use both before you set up your shop's tax rules, and recheck the table when a country changes a rate.

Frequently asked questions

Is OSS compulsory?

No. It is voluntary. A seller can instead register for VAT in each country where it has customers, though few small businesses do.

Does OSS replace my Czech VAT return?

No. Domestic sales, input VAT deductions and other transactions still go through the standard Czech return.

Does OSS cover sales to businesses?

No. It covers consumer sales only; business-to-business supplies follow other rules, usually with the customer accounting for the VAT.

Is the EUR 10,000 threshold per country?

No. It is a single combined figure for cross-border distance sales of goods plus telecommunications, broadcasting and electronic services to consumers.

Where do I register?

With the Czech Financial Administration, through the Czech tax portal.

This is a general explainer, not legal or tax advice. Rules change; check the official source or a licensed adviser.