Accounting & Tax
PCMN charts, VAT rates (21 / 12 / 6 %), corporate and personal income tax, statutory audit.
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MIT LICENSED · BRUSSELS
Open Source
Not everything should be a subscription. Some of what we build at Atelya is released under the MIT license — free to use, fork, and deploy. When a tool serves the public more than it serves a price plan, it belongs in the open.
The same product discipline applies: it ships complete, it works, and the code is there for anyone to read. Two projects, both MIT.
Paperasse BE
AI skills for Belgian bureaucracy.
A collection of 30+ specialised AI agent skills covering Belgian accounting, taxation, notarial law, employment law, cybersecurity, subsidies, real estate, planning and zoning, public procurement, insurance and debt enforcement. Ask in French, Dutch, German or English — it answers in kind.
The Belgian adaptation of Paperasse by Romain Simon — six skills for French bureaucracy, reworked and extended to sixteen for Belgian law across the three regions.
- License
- MIT
- Languages
- FR · NL · DE · EN
- Skills
- 16
- Built with
- JavaScript · Python
Inside Paperasse BE
Each skill maps to a corner of Belgian administrative life — grounded in the actual rules, not generic advice.
Legal
Notary duties, employment contracts, GDPR, rental law across the three regions.
Real Estate
Agent licensing, due diligence, anti-money-laundering obligations.
Society
Co-ownership management, self-employed status, nonprofit (ASBL) rules.
Enforcement
Bailiff procedures, garnishment, eviction processes.
Compliance
Public procurement, planning and zoning permits, insurance regulation.
PropTax Engine
A headless tax engine for Belgian real estate.
A standalone REST API that computes Belgian property taxes and fees across all three regions, then turns the result into a DOCX or PDF. Built to plug into a CRM or property portal — no frontend, no lock-in, runs with or without a database.
Seven calculators
- Registration duties
- Rental indexation
- Lease notice periods
- Capital gains
- Indexed cadastral income
- Rental guarantee
- Property tax (précompte)
- License
- MIT
- Regions
- Flanders · Wallonia · Brussels
- Interface
- Headless REST API
- Built with
- Fastify · TypeScript
Use it, fork it, improve it
Both projects are MIT licensed — no strings attached. Issues and pull requests are welcome on GitHub. Belgian rules change; the more eyes on them, the better the code stays.