Invoice issuers: bill different customers under different senders 11.09.2026
For operators, group accommodations, accounting
Many operators do not invoice everything under the same name. Class trips for international schools run through one company, holiday camps through another - each with its own address, its own bank account, its own tax number and ideally its own invoice numbers. Until now every invoice carried the sender from your account settings, extended by the details maintained for the group suite. Anyone who needed more senders had to run separate accounts.
With invoice issuers you maintain as many additional senders as you like within one account and decide for every invoice who issues it.
One issuer, recorded completely
Every issuer gets an internal name under which it appears in the invoice form, plus its billing address, its bank details and its tax information such as tax number, VAT ID, commercial register and executive directors. Address, bank details and tax information are mandatory - an issuer is always recorded completely, so no invoice is ever created with half a sender. Details that depend on the legal form, such as the register of associations or the supervisory board, stay optional.
You find the administration in the administration menu under Invoice issuers and as a link in the settings under Accounting, both in the general account settings and in the group suite.
Chosen right when the invoice is created
When you create a custom invoice or edit a group invoice, an additional section Invoice issuer appears. That is where you choose who issues the invoice. The default is Default (account settings) - if you choose nothing, you invoice exactly as before. The section only appears once you have created at least one issuer; for everybody else the form stays as it is.
Group invoices start out as drafts. You can switch the issuer as often as you like until the invoice is issued, and the invoice always picks up the current choice.
An own number range per issuer
If you like, an issuer gets an own invoice number range with its own prefix. Its invoices are then called REINT2026-201, REINT2026-202 and so on - they are counted on their own without gaps and do not move the rest of your numbering. Every prefix has its own counter, so two issuers never share a number sequence.
As soon as the first invoice of a number range has been issued, the prefix can no longer be changed. That keeps the numbers unique. An issuer that has already issued invoices can no longer be deleted, but it can be archived - it is then no longer offered for new invoices.
Cancellations stay with the same sender
Cancellation invoices, cancellation fees and draft copies take over the sender of the original invoice automatically and stay in the same number range. So when you cancel, you do not have to keep track of which issuer the invoice once ran under.
Issued means issued
All sender details are stored on the invoice when it is created - just as has always been the case for the recipient address. This applies not only to invoices with a chosen issuer but to every new invoice. If you later move, change your bank or correct an issuer, invoices that have already been issued no longer change retroactively. The PDF, the e-invoice and the invoice view in the customer portal always show the sender the invoice was issued with. That is in line with the German principles of proper bookkeeping (GoBD) and saves you explanations during an audit.
Invoice issuers are managed by the main user of your account.
Author: Mathias Methner