5 common mistakes when moving to e-invoicing

Every year thousands of businesses move to e-invoice and e-archive invoice applications. Across hundreds of transition projects we have seen that most problems come not from the software but from incomplete preparation. Below are the five mistakes we see most often and how to avoid them.

This article is for general information; we recommend consulting your accountant about your business's obligations.

1. Leaving it to the last week

As the transition date approaches, financial seal and integrator applications pile up. Application, approval and testing can take several weeks. Start planning as soon as your obligation is confirmed, and never go live without sending test invoices.

2. Not cleaning up customer records

An e-invoice needs the buyer's tax number, name and address to be correct. Wrong or duplicate customer records that have built up over the years in old software come back as rejected invoices after the switch. Before you move:

  • Fix records with missing or incorrect tax numbers.
  • Merge multiple records for the same company.
  • Deactivate records that are no longer used.

3. Not checking whether the buyer is an e-invoice user

If the buyer is a registered e-invoice user, you issue an e-invoice; if not, an e-archive invoice. This check should run automatically on every invoice. Teams that check by hand can pick the wrong document type, which leads to corrections and cancellations.

4. Ignoring the invoice template

In your customer's hands, an invoice is a document that represents your company. Prepare a template with your logo, bank details and notes fields in the right places. If you sell in foreign currency, test that exchange rate information and export fields appear correctly.

5. Not training the team

In the new system, cancelling an invoice, issuing a return invoice and accepting incoming invoices work differently. Plan short training for everyone who issues, approves and archives invoices. A one-page checklist prevents most mistakes in the first weeks.

Transition checklist

  1. Confirm your obligation and transition date.
  2. Apply for a financial seal or e-signature.
  3. Complete your integrator and software selection.
  4. Clean up customer records.
  5. Prepare the template and send test invoices.
  6. Train the team and monitor the first week closely.

With the right preparation, moving to e-invoicing is a project most businesses complete smoothly within a few weeks.