Key Features of a Compliant Finnish Invoice
To ensure legal compliance in Finland, your invoice must include several mandatory elements. A compliant Finnish invoice requires specific details such as the date of issue and a unique, sequential invoice number. You must clearly state both the seller's and buyer's full names and addresses, along with their respective VAT identification numbers (ALV-numero) or Business IDs (Y-tunnus). For B2B transactions, a detailed description of the goods or services, their quantity, unit price, and the total amount before and including VAT is essential. The applicable VAT rate and the calculated VAT amount must be explicitly shown. Additionally, payment terms, including the due date and a Finnish reference number (viitenumero), are crucial for smooth processing. For e-invoicing, formats like Finvoice 3.0, TEAPPSXML 3.0, or Peppol BIS Billing 3.0, compliant with the European standard EN 16931, are widely accepted.