Invoicing instructions for suppliers
We kindly ask your company to primarily use electronic sales invoices.
The free e-invoice portal enables the sending of e-invoices to the Town of Hamina when the supplier does not have its own electronic e-invoicing program. The invoicer receives a system ID after first registering as a user of the portal via the link below. portal.basware.com/open/hamina
More detailed invoicing instructions, OVT codes and the Town of Hamina's bank account numbers can be found at the following links: