Who this guide is for

Section actions

You if the value of your real estate in France (net of debts) approaches or exceeds €1.3 million
You if you have purchased or inherited expensive property and want to know if the IFI applies
You if you declare the IFI for the first time and want to understand the taxable basis

To be prepared in advance

Section actions

Estimation of all property (main residence, secondary, rental, SCI, abroad) as of January 1
Amount of loans/borrowings allocated to this property (deductible)
Account impots.gouv.fr — for declaration 2042-IFI

Section actions

1Define the tax home: spouse/spaced + minor children. The IFI applies to the global home.
2Estimate net real estate assets at market value on January 1. For the principal residence: 30% discount (forfaitaire, without justification). Acquisition costs, works, deductible real estate debts.
3Add all taxable real estate: in France and abroad (for French tax residents), real estate shares of SCI, SCCV, trust (only the real estate share of a trust); usufruct is included according to its value.
4Exclude professional property (art. 885 O bis / O quater CGI): Real estate assigned to the main professional activity is deductible under conditions.
5Compare the thresholds: net ≥ €800,000 triggers progressivity (0.5% from €800,000 to €1,300 000, 0.7% up to €2,570,000, 1% up to €5,000,000, 1.25% up to €10,000,000, 1.5% beyond). Mandatory declaration if net ≥ €1.3 million.
6Complete the report on impots.gouv.fr (form 2042-IFI, particular space). Deadline: end of May – beginning of June (aligned on the tax return; single online calendar).
7Check the discount for donations to organizations of general interest — reduces the IFI by 75% of the donation, up to a limit of €50,000 (carryable over 5 years).
8In case of complex structure (SCI, trust, foreign assets) — consult an accountant or tax advisor; penalties for undervaluation can reach 40 % (lack of deliberate) + interest.

Section actions

Omit the return beyond €1.3 million net — penalty 10% of the minimum amount, + interest.
Forget the shares of SCI/SCCV/usufruct — the administration crosses the data and straightens up.
Apply the 30% discount to real estate other than the principal residence — reserved for the main dwelling.
Include furniture (furniture, car, cash) — the IFI only hits real estate.
Failure to report foreign assets (forms 3916/3916-bis) — separate fine for accounts/trust (750 € to 10 000 € or 5% of the amount).

Section actions

Show sources in this section

Scale and thresholds set by the CGI (Art. 974 et seq.). Indicative information; for your assets, consult a tax board or the DGFiP.

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