Real estate tools
8 calculators to put a figure on your project
From borrowing capacity to the capital gain on resale: each calculator gives a clear order of magnitude, set against the 2026 rules. Everything runs in your browser; nothing is sent to our servers.
- Borrowing capacityEstimate how much capital you could borrow at the 35 % HCSF debt-service ceiling.
- Monthly payment & cost of creditMonthly payment, total cost of interest and insurance, amortisation schedule.
- Frais de notaire (completion costs)Estimate the acquisition costs collected by the notaire — the public officer who completes every French property sale — on an older home as on a new build.
- Rental yieldGross yield, yield net of costs and net-net yield (after tax) on a rental property.
- Renegotiating / refinancing a mortgageWork out what refinancing would save you, early-repayment charges (IRA) and fees included, insurance too.
- Cost of renovation workIndicative renovation budget range per m², by level of work.
- Rental income tax: micro or réelCompare the micro and réel regimes for your let (unfurnished, or furnished under LMNP).
- Property capital gainEstimate the capital-gains tax due on resale (allowances, income tax, social levies, surtax).
Borrowing starts with choosing a bank
Rates, borrower’s insurance, arrangement fees and salary-domiciliation conditions are not equivalent from one lender to the next. Compare before you file your application.