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EU VAT · By NAQIX · 15 October 2026

EU VAT return, OSS and EC Sales List from one ledger

A business selling across EU borders often reports the same quarter three times: on the national VAT return, on the EC Sales List and on the One-Stop Shop (OSS) return. When the three are prepared separately they drift apart. When every sale is classified once, they agree by construction.

Editorial disclosure: this guide is published by NAQIX, an ERP software vendor. It is general information, not tax or legal advice; confirm how the rules apply to your business with your tax adviser.

Three reports, three questions

Each report answers a different question about the same sales:

Filing frequencies, formats and deadlines vary by member state and by report. The OSS return is quarterly. Confirm the national details with your accountant.

How a sale finds its report

Every sale should be classified once, at the moment it is invoiced, from two facts: where the customer is, and whether the customer is a VAT-registered business. A practical decision path:

  1. Exempt supply? Reported as exempt on the national return.
  2. Customer outside the EU? An export, usually zero-rated, on the national return.
  3. Customer in another member state with a valid VAT number? An intra-community supply, usually zero-rated with the reverse charge applied by the customer. It appears on the national return and on the EC Sales List.
  4. Customer in another member state without a VAT number, and you charged that country's VAT? A distance sale reported through OSS, not on your domestic lines.
  5. Everything else is a domestic sale, reported by VAT rate.

There is an important threshold behind step 4. Below EUR 10,000 a year of cross-border consumer sales across the whole EU, a business established in one member state can generally charge its home VAT, and those sales stay on the national return as domestic. Above it, destination VAT applies and OSS becomes the practical way to report it. Check where you stand with your adviser before you change how you invoice.

Master data decides more than people expect

Classification is only as good as the customer record. Two habits prevent most errors:

Credit notes should follow the sale they correct, so that a refund to a French consumer reduces your OSS figure for France, not your domestic sales.

The purchase side

Your national return also needs acquisitions of goods from other member states and services bought from suppliers abroad, both usually taxed under the reverse charge: you account for the VAT yourself and, if you are fully taxable, deduct it on the same return. These purchases are easy to miss because the supplier's invoice shows no VAT. Review every bill from a foreign supplier that carries no VAT each quarter.

Making the three reports agree

If any of these fail, look for a customer with a missing country or VAT number, or a credit note posted without its original sale.

How NAQIX prepares EU VAT figures

NAQIX classifies each sale once and reads the same data for all three reports, for one company at a time, in the company's base currency. Invoices in other currencies are converted at the rate saved on the invoice.

Notes on each report point out OSS sales, reverse-charge purchases taxed at the standard rate, and reduced-rate goods to correct before filing. Every report exports to CSV, Excel or PDF, or prints. NAQIX does not file any of them: you or your accountant file in each country's own portal after review. Intrastat statistical declarations are outside these reports.

The NAQIX page for Europe covers the local setup, and the Tax & compliance and Sales & billing pages list the related features.

A quarter-end checklist

  1. Fill in the country and VAT number of every customer invoiced in the quarter.
  2. Validate new VAT numbers and keep the confirmation.
  3. Run the three reports for the same dates and check that they agree.
  4. Review every foreign supplier bill without VAT for the reverse charge.
  5. Export the figures, have them reviewed, then file in each portal.

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