VAT OSS Ireland: Guide for Ecommerce Companies Selling Across the EU

What the Union OSS can cover

Revenue lists intra-Community distance sales of goods, cross-border telecommunications, broadcasting and electronically supplied services, other covered cross-border services to non-taxable persons and certain domestic supplies by deemed suppliers. The Member State of consumption receives the VAT even though the return is submitted through the Member State of identification.

A B2B supply to a VAT-registered business can follow different place-of-supply and reverse-charge rules. Customer evidence and VAT-number validation are therefore essential; the same website can contain both B2C and B2B transactions with different treatment.

Registration and all-in treatment

An Irish-established business can register electronically through the VAT OSS area of ROS. Revenue states that once registered, the business must declare and pay all EU VAT due on all supplies covered by the scheme. It cannot selectively put convenient countries into OSS while leaving equivalent covered supplies outside it.

Set an effective date and test whether the ecommerce platform can identify customer location, product tax category and applicable VAT rate. The accounting export should reconcile gross sales, refunds, marketplace deductions and VAT by Member State to the OSS return.

• Map goods, digital services and other services separately.
• Identify B2C and B2B customer evidence.
• Record where inventory is stored and dispatched.
• Confirm marketplace deemed-supplier treatment.
• Reconcile VAT by rate and Member State each quarter.

OSS does not replace every VAT registration

Holding stock in another Member State, making local sales there, importing goods or carrying on other transactions outside the scheme may still create local VAT obligations. OSS is a reporting simplification for supplies within its scope, not a universal EU VAT registration.

Review fulfilment arrangements before sending inventory to a warehouse or marketplace programme. The physical stock route can matter more than the company's Irish incorporation or the location of its website server.

Do not confuse OSS with IOSS

The Import One Stop Shop applies to eligible distance sales of goods imported from outside the EU in consignments meeting its conditions. Revenue's 2026 guidance also reflects new customs rules applying from 1 July 2026, including removal of the €150 customs-duty exemption and a €3 duty per line item for relevant low-value consignments.

IOSS and Union OSS have different returns, supply chains and intermediary rules. An ecommerce company can encounter one, both or neither. Confirm the route of each product from seller to consumer before choosing the registration.

Records and quarterly review

Preserve order data, customer-location evidence, VAT-number checks, dispatch records, invoices, refunds, exchange rates and marketplace reports. Reconcile the return to accounting revenue and payment settlements rather than relying on a dashboard total.

Rates and product classifications can change. Assign responsibility for tax-engine updates and have an adviser review new countries, products, warehouses and platforms before launch. Registration is the beginning of the control, not the end.