How to Send a Peppol Invoice to a Greek Government Department (B2G)

If you have won work with a Greek public body, or simply need to send a single invoice to a Greek government department, you can do it through the Peppol network, even if your business is based in another country. Greece has made e-invoicing mandatory for public-sector (B2G) transactions, and foreign suppliers can send invoices just like local ones.

The one thing that trips people up is that Greek public buyers require a few extra reference fields on the invoice. This guide explains what those fields are, in plain language, and how to send a compliant invoice in a few minutes.

Can a foreign company send a Peppol invoice to Greece?

Yes. Greece is a full member of the Peppol network, and its public-sector buyers receive invoices through it. As long as your invoice is delivered over Peppol and includes the fields the Greek system expects, it does not matter whether your company is in Estonia, Ireland, Germany, or anywhere else.

You do not need a Greek tax registration, a local accountant, or any special software. You need a Peppol-enabled invoicing tool, the buyer's reference details, and a few minutes.

The reference fields a Greek public buyer requires

Greek public-sector invoices follow a national specification (a "CIUS") on top of the standard European e-invoicing format. In practice, the buyer (the government department) will give you a short list of codes to put on the invoice. Here is what each one means, using their official Business Term (BT) numbers so you can match them to the instructions your buyer sends you:

• BT-10, Buyer reference. A short code identifying the buyer, often the department's acronym (for example, EETT). This is the one mandatory routing reference for most Greek public buyers.
• BT-11, Project reference (ΑΔΑ). The ΑΔΑ is the unique number from Greece's "Diavgeia" transparency programme, proving the spending decision was published. It looks something like 9ΗΕΗ639-ΚΗΚ.
• BT-12, Contract document reference (ΑΔΑΜ). The ΑΔΑΜ is the contract's registration number in the national public-contracts registry (KIMDIS), for example 25SYMV016533034.
• BT-46, Party identification. An internal identifier the buyer uses to route the invoice inside their own systems, for example 1000.E00878.0001.
• BT-158, Item classification code (CPV). A CPV code describes what you are billing for, using the EU's Common Procurement Vocabulary, for example 79980000-7. It goes on each line of the invoice.
• Budget type. Greek public spending is split into budget categories. The buyer will tell you which one applies: 1. Regular, 2. Public Investment Budget (ΠΔΕ), or 3. Other.

You do not have to look any of these up yourself. The department issuing the purchase order will provide every value. Your job is simply to copy them onto the invoice exactly as given, including the Greek characters in the ΑΔΑ and ΑΔΑΜ.

How to send the invoice with Invoicier

Invoicier supports every one of these Greek fields, and the form only asks for them when they are relevant, so you are never faced with codes you do not need.

1. Sign up and create your invoice. Start a new Peppol invoice and choose Greece as the buyer's country.
2. Tick "Greek public-sector buyer (B2G)". This reveals the extra reference fields described above. If you are invoicing a normal Greek business, you leave this unticked and the fields stay hidden.
3. Enter the buyer's details. Paste the Peppol ID of the Greek department (or it is filled in for you), then type the authority's legal name and the reference codes from their instructions: BT-10, BT-11 with the budget type, BT-12, and BT-46.
4. Add your invoice lines with a CPV code. Each line gets its BT-158 CPV code so the buyer's system knows what is being purchased.
5. Send. Invoicier converts the invoice to the correct Peppol format, validates it, and delivers it over the network to the department.

That is it. There is no XML to edit and no portal to log into on the Greek side.

How much does it cost?

Sending Peppol invoices with Invoicier is free on the Free plan, which includes two invoices per month. If you only need to send one invoice a year to a Greek department, you will never pay a cent. If your volume grows later, paid plans simply raise the monthly limit.

A few practical tips

• Get the codes in writing. Ask the department to send the BT-10, BT-11 (ΑΔΑ), BT-12 (ΑΔΑΜ), BT-46, CPV, and budget type in an email or document. Entering them exactly as provided is what makes the invoice clear validation.
• Check the buyer is reachable on Peppol. You can confirm a public body is on the network with our Peppol company search before you send.
• Keep the Greek characters. The ΑΔΑ and ΑΔΑΜ contain Greek letters. Copy and paste them rather than retyping, so nothing gets lost.
• The CPV goes on every line. If your invoice has several lines, each needs its own classification code.

Summary

Sending a Peppol invoice to a Greek government department is straightforward once you have the buyer's reference codes. Greece requires a handful of extra fields (BT-10, BT-11 with ΑΔΑ, BT-12 with ΑΔΑΜ, BT-46, BT-158 CPV, and the budget type), but the department supplies them all. With Invoicier you pick Greece, tick the public-sector option, paste in the codes, and send, for free.

Ready to send your invoice to Greece? Get started with Invoicier in a couple of minutes.