Email Invoice for Finland

E-invoicing in Finland is governed by a robust legal framework, primarily the Finnish e-Invoicing Act (241/2019) and the overarching EU Directive 2014/55/EU, which mandates e-invoicing in public procurement. This legislation sets the stage for both public and private sector requirements, aiming to streamline financial processes and enhance transparency.

For suppliers to the public sector, e-invoicing has been mandatory for Business-to-Government (B2G) transactions since April 1, 2020. Central government bodies were required to accept e-invoices from April 1, 2019, with the obligation extending to all public entities a year later. Furthermore, as of April 1, 2021, public sector entities and their service providers are obliged to exchange, validate, and process e-invoices that comply with the European standard EN 16931. Non-compliant invoices are rejected, emphasizing the strict adherence to these standards.

While Business-to-Business (B2B) e-invoicing is not universally mandatory in Finland, it is strongly encouraged and widely adopted. A significant driver for this adoption is the "right to receive" e-invoices: any business with an annual turnover exceeding €10,000 can legally request e-invoices from its suppliers. This provision, effective since April 2020, has significantly propelled e-invoicing as the norm in B2B transactions. All e-invoices, whether B2G or B2B, must include specific data fields such as the supplier's VAT number, invoice date, and applicable VAT amount, and must be stored electronically for at least six years to ensure authenticity and integrity.

To ensure seamless digital exchange and compliance, Finland primarily utilizes specific e-invoice formats and rigorous validation processes. The two most common national e-invoice formats are Finvoice 3.0 and TEAPPSXML 3.0. These formats are XML-based and have been updated to align with the European standard EN 16931, ensuring interoperability within Finland and across Europe. Finvoice, developed by Finnish banks, is widely used, and its network infrastructure connects senders and receivers through accredited service providers. TEAPPSXML, developed by Tietoevry, is primarily used for exchanges between e-invoice operators.

Beyond just the format, Schematron validation plays a crucial role in ensuring the quality and integrity of e-invoice data. This validation process checks the content requirements of an e-invoice against the European Standard on eInvoicing (EN 16931), complementing basic schema verification which only checks the document's structure. For instance, Schematron validation verifies details such as the correct form of compensation amounts, date comparisons, and ensures that prices and VAT calculations are accurate. Since April 1, 2021, the Finnish State Treasury has only accepted invoices that have successfully passed Schematron validation, rejecting any non-compliant documents and sending an error message back to the sender's e-invoice operator or bank. This stringent validation ensures that only high-quality, machine-interpretable invoice data enters the recipient's system, minimizing errors and facilitating automation.

Finland's e-invoicing infrastructure largely operates on the efficient four-corner model, a decentralized approach that facilitates the exchange of electronic documents between various entities. This model ensures that businesses can send and receive e-invoices regardless of their chosen service provider, promoting broad interoperability.

The four corners involved in this model are:

• The Sender: The business or entity originating the e-invoice.
• The Sender's Access Point/Intermediary: A service provider (often a bank or specialized e-invoicing operator) that receives the e-invoice from the sender, validates it, and transmits it to the recipient's intermediary.
• The Recipient's Access Point/Intermediary: This service provider receives the validated e-invoice from the sender's intermediary and forwards it to the final recipient.
• The Recipient: The business or entity receiving the e-invoice.

This model eliminates the need for direct, one-to-one connections between every trading partner, significantly simplifying the setup and management of e-invoicing.

Crucial to the functioning of this model in Finland is the e-invoice address registry, maintained by the Finnish Information Society Development Centre (TIEKE) in collaboration with the State Treasury and service providers. This centralized database contains the e-invoice addresses of Finnish organizations, including private companies, associations, and public sector entities. For an organization to be listed, it must first appear in the Finnish Business Information System (BIS). E-invoice addresses are not automatically added; rather, when an organization contracts with an e-invoice intermediary (operator or bank) to send or receive e-invoices, the intermediary is responsible for adding and updating the organization's e-invoice address in the registry. Maintaining an accurate e-invoice address is vital as it allows trading partners to locate and send e-invoices directly to the correct digital destination, enabling automated processing and avoiding delays.

Peppol (Pan-European Public Procurement Online) plays an increasingly strategic role in Finland's e-invoicing landscape, particularly for facilitating cross-border transactions and driving further digitalization. Finland was an early adopter, launching its Peppol network as early as 2005 or 2008. The Finnish State Treasury serves as the Peppol Authority, overseeing its implementation and adherence to standards.

While Finland has well-established national e-invoicing formats like Finvoice and TEAPPSXML for domestic trade, Peppol addresses the challenge of international interoperability. Peppol provides a standardized network for exchanging electronic business documents, including e-invoices and e-orders, across national borders. This means Finnish businesses can seamlessly connect with trading partners in other Peppol-enabled countries, reducing manual work, errors, and delays associated with international trade.

Peppol's relevance for Finnish businesses is growing significantly. Since April 2024, central government suppliers have been required to exchange Peppol Advanced Ordering documents digitally, a move that is expected to cover all public sector procurement contracts by 2026. This initiative underscores the government's commitment to leveraging Peppol for a fully digital procure-to-pay process. The number of Peppol transactions in Finland saw a substantial increase of 60.6% between 2024 and 2025, highlighting its accelerating adoption. Looking ahead, Finland is aligning with the EU's VAT in the Digital Age (ViDA) initiative, which will mandate structured e-invoicing and near real-time digital reporting for all intra-EU B2B transactions from July 2030. This future regulation further solidifies Peppol's importance as a compliant and efficient solution for both domestic and international e-invoicing for Finnish companies.