EU One Stop Shop: Simplifying VAT for cross-border digital services

Selling digital services across the EU can quickly become a VAT headache. What starts as a simple expansion into new markets often leads to unexpected complexity and becomes an administrative burden.

For many businesses, EU VAT compliance involves:

• Multiple VAT registrations across different EU countries.
• Different VAT rates depending on where the customer is located.
• Complex and ongoing reporting requirements.

To help simplify this, the EU introduced the One Stop Shop (OSS) VAT regime, allowing eligible businesses to report EU VAT through a single return rather than dealing with multiple tax authorities. For low‑value imported goods, a separate scheme applies – the Import One Stop Shop (IOSS), which we cover in a separate article here.

This OSS article explains:

• What the One Stop Shop for VAT is.
• When OSS applies.
• Which businesses can use it.
• How OSS can significantly simplify EU VAT compliance.

What is the EU OSS?

The EU OSS is a VAT reporting regime that allows businesses to declare and pay VAT due across multiple EU countries through one quarterly return, instead of registering for VAT in each individual country.

OSS is primarily aimed at B2C (business‑to‑consumer) transactions and is commonly used for:

• Cross‑border digital services supplied to EU consumers.
• Cross‑border sales of goods to EU consumers.
• Certain supplies facilitated by online marketplaces.

When a business makes a sale in the EU, VAT is charged at the customer’s local VAT rate and, the tax authority where the business is registered for OSS, redistributes the VAT to the relevant EU member states. It’s important that businesses ensure their systems are updated for rate changes in each member state, as VAT rates and the scope of VAT can change periodically.

When does OSS Apply?

The OSS regime applies to businesses making B2C (business‑to‑consumer) supplies to customers located in the EU where VAT is due in the customer’s country.

In practice, OSS is relevant where a business:

1. Supplies digital services to EU consumers – This includes services delivered electronically, such as software and SaaS subscriptions, mobile apps, online platforms, streamed content, and e‑learning. VAT is due based on where the customer is located, not where the supplier is established.
2. Makes cross‑border B2C sales of goods within the EU – If goods are sold to private individuals in another EU country, VAT is generally chargeable in the customer’s country once the relevant threshold is exceeded.
3. Exceeds the €10,000 EU‑wide annual threshold – This only applies to EU‑established businesses, a combined annual threshold of €10,000 applies to cross‑border digital services. Once exceeded, local VAT rates must be applied, and OSS can be used to report this VAT. However, for non-EU businesses, all relevant B2C supplies should be reported via Non-Union OSS regardless of value.

It’s important to note that OSS is optional, but once a business chooses to use it, all qualifying EU B2C sales must be reported through OSS rather than through local VAT returns. OSS does not apply to B2B supplies, as these are generally dealt with under the reverse charge mechanism.

Union OSS vs Non‑Union OSS

There are two OSS schemes, depending on where the business is established.

Union OSS:

• You must have an establishment in the EU.
• Covers intra‑EU B2C supplies of goods and digital services.
• All EU B2C sales are declared on a single OSS return.

Non‑Union OSS:

• No EU establishment required.
• The business selects one EU country as its ‘Member State of Identification’.

This makes Non‑Union OSS particularly attractive to UK, US and other non‑EU SaaS and technology businesses selling digital services into the EU.

How OSS simplifies VAT compliance

OSS can significantly reduce the administrative burden of EU VAT compliance.

Key benefits include:

• No need for multiple EU VAT registrations.
• A single quarterly OSS VAT return.
• Correct VAT rates applied based on customer location.
• Reduced compliance risk.
• Lower administrative and reporting costs.

For growing digital and online businesses, OSS provides a practical and scalable way to manage EU VAT obligations.

Common pitfalls of OSS VAT compliance

While the OSS scheme streamlines VAT obligations for digital service providers, it does not eliminate all complexities. Below are some of the most frequent challenges businesses encounter:

Incorrect customer location data

For digital services, it is essential to maintain accurate evidence of the customer’s location, such as billing addresses or IP information. Mistakes in this area can result in VAT being applied to the wrong country, potentially leading to compliance issues.

Applying the wrong VAT rate

VAT rates differ across EU countries, and certain supplies may qualify for reduced or zero rates. Using incorrect rates can cause underpayment and trigger follow-up assessments and penalties by tax authorities.

Poor data alignment between systems

Consistency across sales platforms, accounting software and OSS returns is crucial. Discrepancies or incomplete data are a common cause of errors in OSS filings.

Late or missed OSS filings

OSS returns must be submitted quarterly and within strict deadlines. Missing these deadlines can result in penalties or even exclusion from the OSS scheme.

Misunderstanding what should be reported via OSS

Only eligible B2C supplies should be included in OSS returns. Domestic sales, B2B transactions, and non-qualifying supplies must be excluded and reported separately if required.

By proactively addressing these common pitfalls, businesses can ensure that OSS delivers genuine simplification, minimising compliance risks and administrative burdens.

How Gerald Edelman can help

While OSS is designed to simplify EU VAT reporting, getting it right from the outset is key. We support businesses at every stage of the OSS journey, including:

• Assessing whether OSS applies to your business.
• OSS registration and setup.
• VAT rate mapping and systems review.
• Preparation and submission of OSS returns.
• Ongoing EU VAT compliance support

Whether you are a SaaS provider, e‑commerce seller, finance team, or international business expanding into the EU, we provide practical, clear support to help you manage OSS confidently and reduce compliance burdens.

If you would like advice on whether OSS is right for your business, or support with registration and ongoing filings, please get in touch with our VAT team.

Last updated: 28.05.2026