Invoicing Instructions

Guidelines for our invoicing partners

Required invoice information

All invoices submitted to Svkatto Oy must include the following information in accordance with Finnish accounting and VAT legislation:

  1. Invoice date
  2. Invoice number (sequential, unique identifier)
  3. Seller's name, address and Business ID (Y-tunnus)
  4. Seller's bank account number (IBAN)
  5. Buyer's name: Svkatto Oy
  6. Buyer's Business ID: 3510360-8
  7. Buyer's VAT number: FI35103608
  8. Buyer's address: Pähkinätie 12 A1, 01710 Vantaa
  9. Description of the invoiced service or goods
  10. Delivery date or delivery period of the service
  11. Tax base in euros (price excl. VAT) and VAT percentage
  12. VAT amount in euros and the total amount payable in euros

Example service description

Include a clear description of the invoiced service, for example:

Standing seam roofing works, Vantaa site, 1–28 Feb 2026
Incomplete or incorrect invoices will be returned for correction. This may delay payment. Please verify all details before submitting your invoice.

E-invoice (Finvoice)

We primarily recommend sending invoices electronically via the Finvoice standard. Use the following details to send e-invoices:

E-invoice address (OVT number)

003735103608

Operator

Apix Messaging Oy

Operator routing code

003723327487

Invoicing enquiries

Agata Stepanova
044 297 7865
Agata.zateeva@gmail.com

Order reference (OrderIdentifier)

Enter the purchase order number or site identifier provided by the client in the OrderIdentifier field. If you have not received a separate reference, leave the field blank or request one from your contact person.

PDF invoices by email

If sending an e-invoice is not possible, you may submit your invoice as a PDF file by email. Please follow these guidelines:

  1. The invoice must be submitted as a PDF file (not Excel, Word, or an image file)
  2. Each invoice must be sent as a separate PDF file
  3. Scanned paper invoices are accepted only as clear and legible PDF files
  4. The PDF file must not be password-protected
  5. The file name must include the invoice number, e.g. invoice-2026-0042.pdf
  6. The email subject line must read: Invoice [invoice number] - [your company name]
  7. Any supporting documents or itemisations must be sent as separate files in the same email
  8. Do not send the same invoice more than once - this may result in a duplicate payment
  9. Send your PDF invoice to: Agata.zateeva@gmail.com