Mastering HOAI Calculations

AUTOMATED HOAI FEE CALCULATIONS IN FRAMEWORK CONTRACTS

When architectural or engineering services are called off, the HOAI (Fee Structure for Architects and Engineers) often comes into play – along with numerous calculation rules, tables, and exceptions.

What seems clearly defined in the contract often becomes a practical challenge during execution: percentage rates, chargeable costs, service phases – all of this must be transparently and correctly included in the price comparison. Mistakes are not just annoying, but potentially costly.

Why HOAI calculations are often problematic in practice

The HOAI governs how planning services are to be compensated. The logic is clear – but its application is often not.
Especially in municipal or utility sectors, HOAI-based services are not rare exceptions, but a standard part of many framework contracts. And yet, many software solutions either don’t support HOAI calculations at all or only do so incompletely.

Why? Because the underlying logic is complex.

Chargeable costs, service phases, remodeling surcharges, and percentage fee components need to be dynamically combined – a challenge many systems avoid. The result:

In practice, this often looks like:

HOAI Calculation as an integrated part of the digital call-off

It only makes sense to embed the fee calculation directly into the digital call-off process.

The goal is clear:

This way, the HOAI calculation is no longer an extra task, but part of a clearly defined, standardized process.

This is exactly where QUICK CONTRACT comes in.
The tool digitizes the entire framework contract call-off process – from project initiation to price comparison, call-off, and awarding.
The automated HOAI calculation is not an add-on but an integrated feature. It enables efficient, accurate, and legally secure handling of HOAI-based services – all within the existing contract framework.

Here’s How It Works:

Services and percentage rates are stored in the framework contract –
Each service phase is assigned a portion of the base fee
During call-off, the user only enters expected construction costs and complexity level –
These chargeable costs, along with the fee zone, form the basis for the calculation
The system automatically calculates the base fee –
Using the official HOAI tables and considering repetitions
The total fee appears directly in the price comparison –
Fully and accurately, with no need for separate spreadsheets or manual adjustments
Export data is generated automatically –
For systems like SAP, GAEB, or audit-compliant documentation

With QUICK CONTRACT, the HOAI calculation becomes a seamless part of the workflow, not a stumbling block.

Economic and Legal Benefits for Clients

Integrating HOAI calculation into the digital call-off process offers tangible benefits – not just in terms of time and effort, but also in legal security and transparency.

Error prevention: No manual recalculations, no copy-paste mistakes
Transparency: All calculations are traceable – even for third parties
Relief: Technical teams and procurement departments are spared complex calculations
Audit compliance: Approved calculation logic ensures long-term legal certainty
Scalability: Even large volumes of HOAI-based services can be processed quickly and consistently

Bottom line: If you regularly award or call off planning services, HOAI should not be treated as a special case, but as an integrated part of a digital standard process.

QUICK CONTRACT offers exactly that: a smart solution that reduces complexity and creates legal certainty – right where it’s needed most.