GC offers different payment models that require different invoice types. 

Pre-Payment (Standard)

Upfront payment of the services in the following way. The following invoice will be created for you:

• Deposit: States the amount of budget which is paid upfront. 
• Invoice: States the delivered services for the previous month and is paid by the prepaid budget of the deposit invoice.

Post-Payment (Upon request, depending on project size)

Payment of the delivered services after the delivery. The following invoices will be created for you: 

• After completion of the project one invoice stating the delivered service and amount. The invoice is payable between 7 - 60 days, depending on the negotiated conditions.
• In case the project runs across several months, the delivered amount will be billed each month depending on the delivered amounts.