VAT OSS Calculator

Written out

The One Stop Shop lets a business account for VAT on cross-border B2C sales across the EU through a single quarterly return in one member state, rather than registering in each. VAT is still charged at the destination rate; only the reporting is consolidated.

The calculation per sale is unchanged, net × (1 + destination rate), but the return aggregates by member state, so the reporting requirement is a breakdown of sales and VAT per country.

In practice

A quarter with €18,400 of net sales into Germany at 19%, €11,200 into France at 20%, €6,800 into the Netherlands at 21% and €3,100 into Hungary at 27%.

VAT due: €3,496 + €2,240 + €1,428 + €837 = €8,001, reported on one return and paid in one payment to the business's own tax authority, which distributes it.

The alternative is four registrations, four filing calendars, four sets of deadlines and four languages of correspondence. For a business selling across ten member states the difference is between a manageable quarterly task and a full-time compliance function.

The limitations

OSS covers cross-border B2C supplies only. Sales within your own member state go on the domestic return, B2B sales use the reverse charge, and goods held in another member state, in a fulfilment centre, for instance, require a local registration there regardless of OSS.

That last exclusion catches sellers using pan-European fulfilment networks. Storing stock in a country creates a registration obligation that OSS does not remove.

Putting it to use

Register for OSS as soon as cross-border sales approach the €10,000 threshold. It is voluntary below it and compulsory in effect above it, and the administrative saving is large enough that early registration rarely costs anything.

Then check separately whether any inventory sits outside your home country. If it does, OSS is not sufficient and a local registration is required in each country holding stock.

IOSS, and the low-value import case

The Import One Stop Shop is the parallel scheme for goods imported from outside the EU in consignments up to €150. The seller charges VAT at the point of sale and reports it through a single monthly IOSS return, and the goods clear customs without a VAT charge at the border.

Without IOSS, VAT is collected at import, usually by the carrier, with a handling fee of several euros added. On a €30 order that fee can be 20% of the order value and it arrives as a demand before the parcel is released, which is the single largest cause of refused deliveries into the EU.

For any non-EU seller shipping low-value consumer orders into the union, IOSS registration is close to essential. Non-EU businesses generally need an intermediary established in the EU to register, which is a real cost, and still cheaper than the refusal rate without it.

One further operational point: OSS returns cannot be amended in the usual sense, corrections are made in a later return with a reference to the original period. That makes accuracy at filing more valuable than it would be under a system with straightforward amendments.

Records supporting OSS returns must also be kept for ten years and made available electronically on request, which is a longer retention period than most domestic requirements and worth setting up deliberately rather than assuming existing practice covers it.