More and more European countries are transitioning to the mandatory use of electronic invoices (e-invoices) in business-to-business (B2B) transactions. These changes directly affect small and medium-sized businesses in Lithuania, especially those that work or plan to work with partners in Latvia, Estonia, Poland, or other EU countries where e-invoices are already mandatory or will be in the near future.
PDF invoices are no longer sufficient today – foreign companies want to receive structured e-invoices that their systems can process automatically. Therefore, businesses must adapt in order to retain customers and avoid delays in payments.
Changes in e-billing in neighboring countries
- Estonia. B2G e-invoices have been in use for a long time, and from July 2025, all companies must accept and issue B2B e-invoices if requested by the other party to the transaction. From 2027, e-invoices will become mandatory for all VAT payers.
- Latvia. From 2025, invoices intended for public authorities must be submitted electronically via the e-address system. By 2028, e-invoices will also become mandatory between businesses (B2B).
- Poland. The national KSeF system is already mandatory for the business-to-government sector, and from February 1, 2026, it will become mandatory for large companies. From April 1, 2026, all remaining companies will have to join the system.
Businesses wishing to work with these markets must submit invoices in accordance with the requirements of each country. Otherwise, the invoice may be rejected and payment suspended.
Important: According to the ViDA directive adopted by the EC, all EU countries that conduct international commercial transactions with other member states will be required to use e-invoices from 2030.
What problems do small and medium-sized businesses face when seeking to expand abroad?
1. PDF invoices are no longer accepted
More and more companies in Estonia, Latvia, and Poland are refusing to accept PDF invoices, requesting only structured e-invoices.
2. Different countries require different formats and channels
Small and medium-sized businesses do not know how to generate the correct e-invoice file, what to fill in, and where to send it according to the requirements of different countries.
3. Manual billing takes a lot of time
Filling in account details, generating PDFs, and sending them by email takes a lot of time and does not reduce the likelihood of human error.
4. Risk of losing foreign partners
Companies are increasingly choosing suppliers who are able to send standardized e-invoices. This helps to prevent fraud cases where a fake PDF invoice is received with a request for payment.
5. Longer payment terms
If your partner cannot process the invoice automatically, they will ask you to submit it in the correct format, which will delay the payment process.
6. Additional costs for integrations
In order to comply with the e-invoicing requirements of different countries, companies often need expensive IT integrations or system upgrades.
How does Banqup solve these problems?
Banqup facilitates the sending of e-invoices for businesses working with foreign partners. The platform automatically prepares the correct e-invoice format in accordance with EU standards, so no additional technical knowledge or IT integrations are required.
Banqup is an all-in-one platform. It makes it easy to send, receive, and archive invoices in various formats.
What should small and medium-sized businesses do now?
- Check which countries require e-invoices.
- Assess whether the current account management system can send e-invoices to partners in accordance with the requirements of the respective countries.
- Consider whether it is worth investing in additional IT integrations or choosing a ready-made solution such as the Banqup platform.
- Try it for free e-invoicing with Banqup.
Banqup provides everything small and medium-sized businesses need to smoothly transition to e-invoicing and work with foreign partners. No additional IT installations, no complicated processes—everything in one system: sending, receiving, and archiving invoices.
