Mon Simulateur Immobilier is the leading French platform for simulating, analyzing, and optimizing your real estate investments. Our professional calculation tools support you at every stage of your project.
Why we built Mon Simulateur Immobilier
Real estate investment is one of the most powerful wealth-building tools in France. Yet too many investors make decisions without reliable tools to analyze the true profitability of their projects.
We created Mon Simulateur Immobilier to democratize access to professional simulation tools that were previously reserved for experts. Our ambition: to enable every investor - beginner or experienced - to make informed decisions based on accurate calculations and up-to-date tax rules.
Each simulator is designed to reflect the real complexity of French real estate investing: multiple tax regimes (LMNP, LMP, SCI IS, rental deficit...), deductible charges, multi-year projections, and comparative scenarios.
Real estate, taxation, and technology
In-depth knowledge of the French real estate market, investment mechanisms, and wealth structuring (SCI, holding companies, dismemberment, life annuity).
Mastery of French real estate taxation in all its components: rental income, BIC, capital gains, IFI, inheritance tax, and optimization schemes.
Advanced calculation algorithms integrating official rates and current legislation, with a modern and intuitive interface accessible on all devices.
Each simulator comes with clear explanations of the concepts used, helping you understand the results and make fully informed decisions.
The people behind Mon Simulateur Immobilier
Founder & CEO
RIANN (SAS)
Passionate about real estate and technology, Steven founded Mon Simulateur Immobilier with the conviction that accessible and reliable simulation tools can transform how French people invest in property. With expertise in fintech and software development, he drives the product vision and platform strategy.
4 pillars that guide every decision we make
All our calculations are based on current French tax legislation (LFSS 2026, CGI, official rates). Our formulas are tested and validated to ensure reliable results.
Your data is protected by authentication, row-level access control (RLS) and encrypted connection (TLS). We are fully GDPR compliant: no data resale, right to erasure respected, European hosting.
Calculators are 100% free, and every simulator has a free tier to get started. No hidden fees, no pricing traps. Our calculation sources and methodology are documented and accessible.
Mon Simulateur Immobilier does not receive any commission from banks, real estate agencies, or developers. Our recommendations are purely objective, based solely on your data.
Mon Simulateur Immobilier at a glance
17
Specialized simulators
25+
Real estate calculators
50+
Cities covered
100%
Official data sources
Calculations based on official sources
The reliability of our simulators relies on the exclusive use of official data and rate tables. Here are the main sources we integrate:
Income tax brackets (TMI), social contributions (17.2%), tax regimes (micro-foncier, real, micro-BIC, LMNP real).
Used for life annuity calculations: life expectancy, DUH coefficients (Right of Use and Habitation), actuarial tables.
Database of 14 million+ energy performance diagnostics (DPE) for our energy verification and simulation tools.
Rent Reference Index published by INSEE for rent revision calculations and multi-year projections.
Notary fees by department, transfer duties, proportional fees, and up-to-date ancillary costs.
Social Security Financing Act: social contribution rates, thresholds, and updated allowances.
Important: our simulations are indicative and do not replace the advice of a qualified professional (notary, accountant, tax lawyer, wealth management advisor).
We're here to listen. Don't hesitate to contact us with any question about the platform, our calculations, or our simulators.
Contact us