HOAI calculator for architects and engineers
From quote to final invoice — teamspace supports flexible, structured HOAI billing aligned to your way of working.
HOAI billing made simple and flexible
teamspace makes HOAI billing structured and flexible — from the first quote to the final invoice.
Flexible billing for your needs
- By payment plan — define fixed billing dates; teamspace creates invoices automatically at the agreed time.
- By project progress — once a project phase is closed, the matching service position becomes billable. Stay in control with minimal effort.
Many more settings let you tailor billing to your projects and processes.
Learn more on our HOAI calculator page.
HOAI in brief
The German HOAI is the central framework for billing architectural and engineering services. Since 1977 it has been revised several times. With HOAI 2021 the fee rates serve as guidance rather than being binding — opening up flexibility while requiring more clarity in negotiations.
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