Invoice format in Finland: Lasku rules

Finland invoice facts

What a Finland lasku must show

12 fields, from the sources listed below.

• Date of issue
• Unique invoice number
• Seller name, address and Y-tunnus
• Buyer name and address
• Buyer ALV-numero for intra-EU and reverse-charge sales
• Quantity and nature of goods, or extent and nature of services
• Date of delivery or of advance payment
• Unit price without ALV and any discounts
• Tax base for each ALV rate (25.5%, 13.5% or 10%)
• ALV rate applied (25.5%, 13.5% or 10%)
• ALV amount payable, in EUR
• Reference to the exemption or reverse charge when no ALV is charged

Sample lasku in EUR

The tool above uses these lines. Illustrative amounts in EUR, not market prices.

Worked ALV example in EUR

A net amount of 1 000,00 € at each ALV rate of Finland: the tax is the net amount times the rate, rounded to the currency's smallest unit.

Number, date and currency format (fi-FI)

How fi-FI writes amounts and dates, computed with the browser's Intl API; the invoice tool uses the same formatting.

Finland invoicing rules

• The general ALV rate has been 25.5% since 1 September 2024, one of the highest standard rates in the EU.
• Since 1 January 2026 food and restaurant services use the 13.5% rate, and 10% remains for a short list that includes newspapers and periodicals.
• Finnish VAT numbers are FI followed by the eight digits of the Y-tunnus without the hyphen.
• Since April 2020 a business may ask its suppliers to send invoices as structured e-invoices, and suppliers with turnover above €10,000 must then comply.
• Accounting vouchers, including invoices, are kept for at least six years from the end of the financial year.

E-invoicing, simplified invoices and record keeping

How to make a lasku for Finland

1. 1

   Set currency and format

   Choose EUR and the fi-FI format so amounts read like 1 234,50 €.

2. 2

   Title and number

   Title the document "Lasku" and number it in sequence, for example FI-2026-0029.

3. 3

   Your tax ID

   Enter your Y-tunnus / ALV-numero (format FI12345678) in the seller details.

4. 4

   Add ALV

   Add ALV at 25.5%, or a reduced rate where the goods or services qualify.

5. 5

   Check and download

   Check the 12 required fields above, then download the PDF.

Sources

General information, not tax advice; checked October 2026. Rules change: confirm with the tax authority or an accountant before relying on them.