Compliance · 🇫🇮 Finland Live mandate

Finland — Finvoice, Peppol BIS & B2B-on-request

B2B-on-request since 2020 · B2G universal · Finvoice + Peppol — regulator: Verohallinto (Finnish Tax Administration). Facts last refreshed: 2026-05-05.

Coverage model

Flowie operates a registered Peppol Access Point in this jurisdiction directly where we hold national accreditation, or via a vetted local partner registered with the in-country regulator where on-the-ground presence is required (KSeF, SDI intermediario, ZATCA service-provider, etc.). Either way, you call the same POST /v1/documents/send.

TL;DR

Finland operates a B2B-on-request regime: since April 2020, any buyer can demand a structured EN-16931 invoice and the seller must comply.
Domestic format historically: Finvoice 3.0 (Finnish UBL-derived). Modern channels use Peppol BIS 3.0 — both interoperable.
B2G universal since 2010 via Valtiokonttori (State Treasury) and the OPUS hub.
Flowie auto-translates between Finvoice and Peppol BIS.

Deadlines

Date	Who	What
2010-12-01	Central government	Receive-only B2G mandate (Valtiokonttori).
2020-04-01	Domestic B2B	Buyer's right to request a structured invoice — de facto universal.
2027-03-01	Possible full B2B mandate	EU ViDA-aligned; Finnish Tax Administration consultation underway.

Background

Finland's B2B-on-request rule (Laki sähköisestä laskutuksesta, 241/2019) is structurally similar to Estonia's: the seller can't refuse a buyer who asks for a structured invoice. Combined with very high adoption rates (Finland has had rich B2B e-invoicing since the early 2000s), the rule means structured-invoice volume is already over 80% of B2B in Finland.

Format profile

Peppol BIS 3.0 is the strategic format.
Finvoice 3.0 remains widely used; bidirectionally mappable to BIS.
Finnish business ID (Y-tunnus, format NNNNNNN-N) on both parties.

Required fields

seller.businessIdstring (Y-tunnus)required

Finnish business ID, e.g. 1234567-8.
buyer.businessIdstringrequired for B2B

Same format.

Public sector (B2G)

Hub	Peppol identifier scheme	Lookup
Valtiokonttori OPUS	`0037:FI-<y-tunnus>`	https://www.valtiokonttori.fi

Public-sector recipients identified by the Y-tunnus over Peppol scheme 0037.

B2B reporting / clearance

No central B2B reporting hub — pure transmission only.

Error codes

Generic Peppol BIS schematron error codes apply (BR-*, EN16931-*); no country-specific overlays.

Testing in sandbox

What you want to test	How
Finnish B2B happy path	Y-tunnus `1234567-8` on both sides; sandbox returns 201.
Force Finvoice rendering	Set `format: "finvoice"`.

FAQ

Is Finvoice still required?

Not strictly — Peppol BIS satisfies the legal obligation. But many older Finnish ERPs only consume Finvoice; Flowie renders it on the way out automatically when the recipient prefers it.

References

Primary sources (government / regulator / standards body):

EU Commission · eInvoicing in Finland — Pan-EU reference factsheet.
OpenPeppol · Finland profile — Authoritative Peppol facts.
Valtiokonttori · State Treasury e-invoicing — State Treasury — Finnish Peppol Authority.
Valtiokonttori · Invoicing the State (Handi) — B2G submission via Handi/Basware portals.
Finnish eInvoicing Act 241/2019 (Finlex) — National eInvoicing Act text.

Industry analyses (vendor trackers — useful for cross-referencing):

ecosio · Finland e-invoicing — Industry tracker — Finvoice/TEAPPSXML.