E-invoices

How-to

• Send an e-invoice to a client

  How to deliver an invoice straight into your client's accounting software: what has to be set up, where to see whether the client accepts e-invoices, and what to do when sending fails.
  4 min
• Receiving incoming e-invoices

  Supplier e-invoices arrive in X7 by themselves and turn into expense documents with no typing. Where they live and how to work with them.
  3 min
• Register as an e-invoice recipient in the business registry

  Before suppliers can send you e-invoices, reception has to be confirmed in the e-Business Register portal. Three steps in the portal and X7 activates the contract itself.
  3 min
• E-invoice sending errors: what each message means

  A walkthrough of the messages X7 shows when an e-invoice fails to send — from a missing registry code and an empty country field to the operator's own rejection text. What to check for each one.
  6 min

Explainer

• What an e-invoice is and how it differs from a PDF

  An e-invoice is a machine-readable document that lands in the client's accounting software. A PDF is a picture for a human. Why the difference matters and what it changes day to day.
  4 min
• E-invoices from 1 July 2025: who has the right, who has the duty

  What exactly changed in July 2025: the buyer's right to demand an e-invoice and the seller's duty to issue one. What it means for a small business in practice.
  4 min
• How to find a client's PEPPOL ID

  On the PEPPOL network the address is a scheme code plus a company identifier. For an Estonian company that is the registry code under scheme 0191. How to check it and what to do when a client is not listed.
  4 min
• What sending and receiving e-invoices costs

  Where the cost actually comes from: the operator fee, the software module and your time. How to compare offers and why receiving is usually cheaper than sending.
  4 min
• E-invoices for the public sector: what suppliers must do

  Since 1 July 2019 Estonian state and municipal institutions only accept invoices in machine-readable form. What that means in practice and how to send such an invoice from X7.
  5 min
• Cross-border e-invoices via PEPPOL

  How an e-invoice reaches a client in another country, why the country field on the client record decides everything, and what to do when the recipient is not on the network.
  5 min