Estimate French Real Estate Wealth Tax (IFI 2026): €1.3M threshold, 30% legal allowance on primary residence, debt deductions, progressive tiers (0.5% to 1.5%), and decote smoothing.
Qualifies for an automatic 30% statutory deduction.
Remaining mortgage balance, property taxes due.
\text{Patrimoine Net} = (\text{Résidence Principale} \times 70\%) + \text{Autres Biens} - \text{Dettes Déductibles}The IFI applies only when net taxable real estate assets on January 1st reach or exceed €1,300,000. Once triggered, taxation starts at €800,000 across progressive brackets from 0.5% to 1.5%. A 'décote' smoothing system dampens the tax burden between €1.3M and €1.4M.
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