Finland e-invoicing
No Finland data file exists anywhere in this repository — no country policy, no identifiers, no tax system, no transmission channel. Nothing on this page is implemented. It is here so that someone who wants Finland support knows what adding it would involve. The countries Invoicerr does cover are listed in the country directory.
Finland has required B2G e-invoicing since 2010, run by the Tax Administration (Verohallinto), and B2B adoption is already very high even though it remains voluntary. Domestic invoices typically travel as Finvoice, Finland's own national e-invoice standard, exchanged through a network of banks and e-invoice operators; Peppol is used for cross-border and government delivery.
What supporting Finland would involve
| System | Finvoice — Finland's national e-invoice standard, exchanged over a network of banks and e-invoice operators |
| Authority | Tax Administration (Verohallinto) |
| Format | EN 16931 (Peppol BIS). This repository already builds and validates it (formats/peppol-bis-provider.ts, formats/ubl-provider.ts), so the format would not have to be written from scratch. |
| Transmission | The Finvoice network of banks and e-invoice operators, alongside Peppol for cross-border delivery. No transport in backend/src/modules/documents/transports/ talks to either today. |
Carried over from an earlier research pass in this repository's own history, and never checked against a primary source. Leads, not facts — confirm every line before writing it into a data file.
- B2G e-invoicing has been mandatory for central government since 2010, and for the whole public sector since 2020.
- B2B e-invoicing is voluntary but has very high real-world adoption.
- Central government has used Peppol Advanced Ordering since 2021.
Which catalogues a contributor would add
Adding a country is data, not code. Adding a country is the procedure and the contract each file has to satisfy; this is only the shopping list for Finland.
country-policy/data/fi.json— which document actions Finland allows. Start here: without this file every action is refused with a 403, naming the country.country-identifiers/data/fi.json— which national identifier a party must carry.tax/tax-systems/data/fi.jsonandvat-rates/data/fi.json— the tax kind, and the rate ladder offered on an invoice line.correction-routes/data/fi.json— all eleven canonical correction routes,unverifiedwhere unresearched, never omitted.b2g-routing/data/fi.json— the channel and format a Finnish public buyer requires.transports/channel-policy/data/fi.json— whether a channel is legally required of a seller established in Finland, and from what date.archive/retention/data/fi.json— how long an archived document is kept, and what the duration is counted from.
Add mentions/, content-requirements/, country-fields/, reporting/ and
domestic-reverse-charge/ only where the law actually gives them content.
Data alone will not finish the job here: the Finvoice network is a transmission channel this repository does not implement, which is code, not a JSON file — see When a country needs more than a file.
Want Finland supported?
Check the open compliance issues first. If there is no issue for Finland, open one and name which of the files above you need — a request that names one mechanism is far more actionable than "please add Finland".