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    Forskning16.2.2026

    E-fakturering i Finland: lag 241/2019, EN 16931 och en checklista för implementering

    E-fakturering är en lagstadgad skyldighet för den offentliga sektorn och blir allt vanligare inom den privata. Vi går igenom lagens krav, standarden och implementeringsstegen.

    Finland

    E-invoicing is a statutory obligation in Finland for public sector invoices and is rapidly becoming more common in the private sector. In this article, we will go through what an e-invoice means, what law 241/2019 requires, and how a small business can correctly implement e-invoicing.

    What is an e-invoice?

    An e-invoice is an electronic invoice sent in a structured format, which is transferred directly from the sender's system to the recipient's system without manual processing.

    An e-invoice is not the same as an email invoice or a PDF invoice. The key difference:

    • E-invoice: structured data (e.g., Finvoice, TEAPPSXML, Peppol BIS), machine-readable
    • PDF invoice: an image of an invoice, requires manual processing or OCR reading
    • Email invoice: PDF attached to an email – does not meet the requirements of an e-invoice

    Law 241/2019: what does it require?

    The Act on Electronic Invoicing for Contracting Entities and Businesses (241/2019) came into force on April 1, 2020. It is based on EU Directive 2014/55/EU.

    Main content of the law:

    • Invoices sent to the public sector (state, municipalities, joint municipal authorities) must be e-invoices
    • The recipient must be able to receive e-invoices compliant with the EU standard (EN 16931)
    • A business has the right to request an e-invoice from another business
    • The law does not yet mandate e-invoicing for all private sector invoicing, but the direction of development is clear

    EN 16931 – EU invoicing standard

    EN 16931 is the common EU standard for the data content of an e-invoice. It defines what information an e-invoice must contain and in what format.

    In practice, EN 16931 means that a Finnish e-invoice is compatible with a German, French, or Spanish system – as long as both comply with the same standard.

    In Finland, the most common e-invoice formats are Finvoice (used by banks) and TEAPPSXML (used by operators). Both are EN 16931 compliant.

    Implementation checklist for a small business

    1. Choose invoicing software that supports e-invoicing (e.g., Eemel Invoicing)
    2. Obtain an e-invoice address (OVT ID or Peppol ID)
    3. Sign an agreement with an e-invoicing operator (or use the invoicing software's built-in operator)
    4. Update your invoice template to include all statutory information
    5. Test sending an e-invoice to a few customers
    6. Inform your customers of your e-invoice address and update it in TIEKE's e-invoice address directory

    Most common errors in e-invoicing implementation

    • E-invoice address not registered: customer cannot find your address
    • Mandatory information missing from the invoice template: invoice recipient rejects it
    • VAT identifier not marked correctly: in EU trade, an incorrect identifier causes problems
    • PDF invoice mistaken for an e-invoice: a PDF in an email is not an e-invoice
    • Operator agreement missing: invoice does not move in the operator network

    Practical example: renovation company and public procurement

    A renovation company of five people received its first public sector contract from the municipality. The invoice had to be sent as an e-invoice – otherwise, it would not have been accepted.

    The company started using Eemel Invoicing, which has e-invoicing built-in:

    1. The e-invoice address was created automatically upon implementation
    2. The invoice was sent directly to the municipality's system in Finvoice format
    3. Payment was received in the account within 7 days (previously 21 days with paper invoices)

    Now the company sends all its invoices as e-invoices – even to private customers via their online bank.

    Try it in practice

    Eemel Invoicing includes e-invoicing, an operator connection, and automatic archiving. All in one package.

    Try 14 days for free

    Frequently Asked Questions

    Is e-invoicing mandatory for all companies?

    Not yet. Act 241/2019 mandates the use of e-invoices for public sector invoices. In the private sector, e-invoices are still voluntary, but a business operator has the right to request them.

    What is an OVT-tunnus?

    An OVT-tunnus is a Finnish e-invoice address. It consists of the country code 0037 and the company's Business ID without a hyphen.

    Can a small company send e-invoices?

    Yes. Sending e-invoices is possible, for example, through Eemel Invoicing without separate agreements with operators.

    What is Peppol?

    Peppol is an international e-invoicing network that enables cross-border invoicing in the EU. In Finland, Peppol is becoming more common, especially in public sector invoicing.

    How does an e-invoice differ from an e-lasku?

    An e-lasku is an electronic invoice aimed at consumers for online banking. An e-invoice is a structured invoice between companies that is transferred directly to the financial management system.

    This article is general in nature and does not constitute legal advice.

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