Finance Stack for German Architecture Office
Stack for architects and engineers. HOAI billing, project phases, long project cycles.
How This Stack Works
HOAI project phases → Abschlagsrechnungen → Client pays → Qonto receives → lexoffice tracks by project → finban for long-term planning → DATEV to Steuerberater
App Compatibility
Apps & Services in This Stack
Each category below shows the recommended app or service and alternatives. Click on any item to learn more.
Qonto
Modern business banking for SMEs and startups. Multi-user access, virtual cards, integrations.
Why this choice
Qonto provides the professional banking presence architects need when working with developers, construction firms, and institutional clients. Sub-accounts can separate operating funds from project-specific deposits or retainers. The clean interface and DATEV integration streamline financial administration, letting you focus on design work rather than banking logistics.
When to switch
N/A
Alternatives
lexoffice
Popular German accounting software by Lexware. GoBD-compliant, great for small businesses.
Why this choice
lexoffice supports HOAI-compliant phase-based billing with Abschlagsrechnungen for partial payments across the nine Leistungsphasen. You can track billable amounts per project phase and generate invoices as milestones are reached. The system maintains clear records of what's been invoiced versus what's outstanding, essential for projects spanning years.
When to switch
Specialized architecture software.
lexoffice
Popular German accounting software by Lexware. GoBD-compliant, great for small businesses.
Why this choice
lexoffice enables project-by-project accounting essential for architecture offices managing multiple buildings at different stages simultaneously. Long-running project accounting tracks costs and revenues across years, providing accurate profitability analysis per project. The DATEV integration ensures seamless data transfer to your Steuerberater while maintaining your own real-time financial overview.
When to switch
N/A
Alternatives
Why this choice
Architecture projects create uniquely challenging cash flow patterns with large payments arriving months apart as phases complete. finban visualizes when HOAI milestone payments will arrive against your ongoing costs for salaries, rent, and software licenses. Scenario planning helps you prepare for common issues like construction delays that push back your Leistungsphase completions and invoicing.
When to switch
N/A
Accountable Tax Service
Combination of tax software and human tax advisors for freelancers.
Why this choice
Architects need a Steuerberater who understands Freiberufler status, HOAI fee structures, and the tax implications of long-running projects with revenue recognition across years. They can advise on optimal business structures as your practice grows from solo to partnership. Experience with architect-specific deductions for professional development, software, and office space maximizes your tax efficiency.
When to switch
N/A
About This Business Type
Architecture and engineering offices in Germany operate under a unique fee structure defined by the HOAI (Honorarordnung für Architekten und Ingenieure). While HOAI is now orientation rather than mandatory since 2019, it still heavily influences pricing and project structuring. Your finance stack must handle the complexity of long projects, phased billing, and the relationship between construction costs and fees. Projects span months or years with distinct HOAI phases (Leistungsphasen 1-9), each representing a portion of total fees. Revenue recognition should align with work phases completed, not payment timing. Many architects struggle with cash flow because significant work precedes billing milestones. Proper WIP tracking is essential. Professional liability is particularly important in architecture—errors can result in construction defects with massive remediation costs. Berufshaftpflichtversicherung is mandatory for Architektenkammer membership. Insurance costs and coverage levels affect both practice structure decisions and project profitability.
Common Challenges
- Long project timelines affecting cash flow
- HOAI phase-based fee calculations
- Work-in-progress before billing milestones
- Construction cost overruns affecting fees
- Professional liability management
Compliance Requirements
- HOAI fee structure orientation
- Architektenkammer membership requirements
- Berufshaftpflichtversicherung requirements
- Construction supervision (Bauleitung) billing
- Freiberufler status for architects
Why This Stack Works
- Project phase tracking and billing
- WIP and AR management
- HOAI-aligned fee calculations
- Long-term project accounting
- Freiberufler tax optimization
Frequently Asked Questions
How does HOAI affect architecture office finances?
HOAI provides fee tables based on construction cost (Baukosten) and fee zones. While no longer mandatory, most clients and architects still use HOAI as framework. Phases 1-9 have percentage allocations—bill as phases complete. If construction costs increase, fees should proportionally increase (renegotiate if significant). Track actual construction costs vs. original basis for fee adjustment discussions.
When should architects recognize revenue?
Recognize as phases complete and you have right to bill. Not when paid—when earned. For long projects, this means progressive recognition. Bill at major milestones (end of Phase 2/3, end of Phase 4, etc.). Track WIP carefully—work performed but not yet billed is an asset. Accrual accounting (Sollversteuerung) makes more sense than cash basis for architecture due to timing mismatches.
Are architects Freiberufler or Gewerbetreibende?
Architects are classic Freiberufler (Katalogberuf)—listed explicitly in §18 EStG. This exempts you from Gewerbesteuer and IHK membership. However, activities beyond core architecture (selling products, real estate development with own capital) may trigger gewerbliche Einkünfte. Keep architectural services separate from any commercial activities. Membership in Architektenkammer confirms professional status.
How should architecture offices handle project cash flow?
Architecture suffers from cash flow gaps—significant work before billing milestones. Strategies: bill phase advances (not full phase, but partial as work progresses), shorter billing cycles on long phases, retainer arrangements for ongoing advisory. Track WIP religiously—it represents cash tied up in projects. Consider line of credit for bridging gaps between work and payment.
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