IFI 2026: filing, tax scale and optimisation strategies
Deadline: 4 June — everything you need to know before declaring your real estate wealth
- IFI 2026 return must be filed by 21 May (zone 1), 28 May (zone 2) or 4 June (zone 3) — wealth assessed as at 1 January 2026
- Tax scale unchanged: EUR 1.3m threshold, progressive rates 0.5% to 1.5%, 30% allowance on primary residence
- The unproductive wealth tax (IFI-I) was abandoned for 2026 — but the political debate remains open for 2027
- Three immediate levers: deductible debts, charitable donations (75% reduction), reclassification as professional asset
- Frequent mistake: overlooking the discount applicable to jointly-owned properties
May 2026: IFI filing season
Every year, May marks the most technically demanding period for high-net-worth individuals: filing the Impot sur la Fortune Immobiliere (IFI). In 2026, deadlines are staggered between 21 May (departments 01 to 19), 28 May (departments 20 to 54) and 4 June (departments 55 to 976). Missing these deadlines triggers surcharges of 10% to 40%.
A classic pitfall: wealth is assessed as at 1 January 2026. A property sold in February does not exempt you from IFI for this year. The tax scale is strictly identical to 2025 — the IFI-I proposal was dropped via Article 49.3, but political pressure remains real for 2027.
« Wealth is assessed as at 1 January. A sale completed in February does not exempt you from IFI 2026. »Regulatory reminder — art. 964 CGI
The IFI 2026 tax scale: a detailed guide
The IFI applies when net taxable real estate wealth exceeds EUR 1.3m as at 1 January 2026. Taxation begins at EUR 800,000. The primary residence benefits from a 30% flat-rate allowance. For wealth between EUR 1.3m and EUR 1.4m, a tapering relief applies: EUR 17,500 minus 1.25% of net taxable wealth.
What falls within the IFI base — and what does not
Understanding the precise scope of the IFI is often the first source of tax savings. Deductible debts — mortgages still being repaid — reduce the taxable base: a property worth EUR 2m financed with EUR 800,000 outstanding yields a net base of EUR 1.2m, below the threshold.
| Asset Category | Within IFI Base? | Comment |
|---|---|---|
| Directly held real estate | Yes | Primary residence (30% allowance), secondary homes, rental property |
| SCPI / OPCI fund units | Yes (real estate fraction) | Only the real estate fraction is taxed |
| SCI subject to corporate tax | Yes | Market value proportional to real estate fraction |
| Life insurance (fonds euros) | No (in general) | Except where the contract holds real estate funds (SCI, OPCI) |
| PEA, securities account, PER | No | Pure financial assets remain excluded from IFI |
| Professional real estate | No (exempt) | Asset must be allocated to the taxpayer’s main business activity |
| Forests, woodlands, GFI units | Partially exempt | 75% exemption subject to 30-year sustainable management commitment |
Five legal optimisation strategies
Reducing one’s IFI means structuring wealth so the taxable base accurately reflects economic reality, and making full use of mechanisms provided under the law.
Charitable donation: 75% reduction
Gifts to eligible public-interest organisations generate an IFI reduction of 75%, capped at EUR 50,000. For an IFI bill of EUR 60,000, a EUR 50,000 donation reduces it to EUR 10,000 net.
Dismemberment of ownership
Where a gift is made with retention of usufruct, only the usufructuary is liable for IFI on the full value. The bare owner is not taxable. This strategy optimises both IFI and inheritance tax efficiency.
Reallocation to non-taxable assets
PEA, securities accounts, PER and non-real-estate life insurance are mechanically outside the IFI base. Disposing of a low-yielding rental property to fund a PER reduces IFI while improving overall portfolio yield.
Fourth lever: investment in woodlands and forests (GFI)
GFI units benefit from a 75% exemption from IFI subject to a 30-year sustainable management commitment. A EUR 500,000 investment enters the IFI base at only EUR 125,000. This asset combines tax optimisation with genuine diversification.
Fifth lever: professional asset classification
Real estate assets allocated to the taxpayer’s principal business activity are fully exempt from IFI. A business owner occupying personally owned premises may apply for exemption, subject to rigorous documentation.
The unproductive wealth tax proposal: abandoned, but not forgotten
The Mattei-Brun amendment aimed to transform the IFI into a broader levy targeting liquidity, crypto-assets, valuables and life insurance in euro-denominated funds. Adopted by 163 votes to 150, it was removed when the 2026 budget was passed via Article 49.3.
With a public deficit of 5.4% of GDP and EUR 2.1 trillion in life insurance assets, the question of taxing passive financial wealth remains firmly on the political agenda. Taxpayers with significant financial holdings should monitor the autumn 2026 budget discussions closely.
« The question is no longer whether wealth taxation will be reformed, but when and to what extent. »Council of Mandatory Levies (CPO) Report, December 2025
- IFI 2026 deadlines: 21 May, 28 May or 4 June depending on your department — wealth assessed as at 1 January 2026
- Tax scale unchanged (0.5% to 1.5%), EUR 1.3m threshold, 30% allowance on primary residence
- IFI-I proposal abandoned for 2026 but remains a genuine risk for future budgets
- Deductible debts, charitable donations (75% reduction) and dismemberment are the principal legal levers
- Reallocation to PER, PEA or non-real-estate life insurance mechanically reduces the taxable base
This document is provided for information purposes only and does not constitute investment advice, a personalised recommendation or an offer to buy or sell financial products. Past performance is not indicative of future results. All investments involve risks, including the risk of capital loss. The information contained in this article reflects the analysis of Riviera Wealth Management as at the date of publication and is subject to change. Riviera Wealth Management is an independent financial investment adviser (CIF), registered with ORIAS and a member of CNCGP.
