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Deduct renovation works from rental income and global income. Understand the rental deficit mechanism, its caps and optimal strategy.
The rental deficit (deficit foncier) is a powerful French tax mechanism that allows landlords to deduct their expenses (especially renovation works) from their rental income, and even from their global taxable income under certain conditions.
In practice, when your deductible charges exceed your rental income, you create a "deficit" that reduces your overall tax base, generating significant tax savings.
The rental deficit only applies to unfurnished rental income (revenus fonciers). It does not apply to furnished rental income (LMNP/LMP), which falls under the BIC regime.
Enter your annual gross rental income from unfurnished property.
To benefit from the rental deficit, you must use the regime reel (actual expenses). The micro-foncier (30% flat deduction) is simpler but does not allow creating a deficit. The regime reel becomes advantageous when your actual charges exceed 30% of your rental income.
Distinguish between the two categories of charges, as they are treated differently for tax purposes.
(loan interest, loan insurance)
(renovation works, property tax, management fees, landlord insurance, condo charges, diagnostics)
Fundamental rule: only non-financial charges can create a deficit chargeable against global income. Loan interest never reduces your global income.
Not all works qualify. Identify those eligible for the rental deficit.
Since 2023, the rental deficit cap chargeable against global income is doubled to EUR 21,400/year (instead of EUR 10,700) for properties rated DPE F or G that are improved to D or better through energy renovation works.
Standard cap: EUR 10,700/year of rental deficit chargeable against global income.
The calculation follows a precise order in two distinct steps.
Step A: 8,000 - (25,000 + 3,000) = -20,000 EUR
Non-financial deficit
Charged against global income: 10,700 EUR
(standard cap)
Excess non-financial: 20,000 - 10,700 = 9,300 EUR
Carried forward on rental income
Step B: 0 - 4,000 = -4,000 EUR
Financial deficit (rental income already at 0)
Total carried forward 10 years: 9,300 + 4,000 = 13,300 EUR
On future rental income
Calculate the tax savings generated by the rental deficit.
The deficit charged against global income generates a tax saving equal to the deficit amount x TMI.
The deficit carried forward on rental income avoids taxation at TMI + 17.2% on that future income.
Example with TMI 30% and EUR 10,700 deficit on global income:
Multi-year strategy: spread your works over 2-3 years to maximize the annual EUR 10,700 (or EUR 21,400) cap against global income each year.
The simulator provides a year-by-year analysis showing the evolution of your rental deficit.
Rental income
Gross rents received each year
Total charges
Financial + non-financial charges (including works)
Year deficit
Deficit amount created (or taxable rental income)
Global income offset
Amount deducted from global income (cap EUR 10,700 or EUR 21,400)
Cumulative carry-forward
Remaining deficit balance to carry forward to subsequent years
Tax savings
Amount of taxes saved year by year
Net cost of works
Actual renovation cost after tax benefit
The rental deficit is subject to strict conditions that must be respected.
The property must remain rented unfurnished until December 31 of the 3rd year following the deficit offset against global income. Otherwise, the tax benefit is reversed.
You must opt for the regime reel (form 2044 or 2044-SPE). Micro-foncier does not allow creating a deficit.
The property must be rented unfurnished. Furnished rental (LMNP/LMP) falls under a different tax regime (BIC).
Works must concern a property already rented or that you commit to renting within a reasonable period after the works.
Maximize the impact of the rental deficit with a structured approach.
Buy a property rated F or G on the DPE. The purchase price will be lower and you will benefit from the enhanced cap of EUR 21,400/year against global income.
Commission works that achieve a D rating or better to qualify for the enhanced cap.
Distribute expenses to maximize the annual offset against global income (EUR 10,700 or EUR 21,400 each year).
Excess deficit is carried forward for 10 years on rental income. Even a major EUR 50,000+ renovation will be fully utilized for tax purposes.
After the mandatory 3 years of unfurnished rental, you can switch to furnished rental (LMNP) if it is more tax-efficient going forward.
Common mistakes that can compromise your rental deficit strategy.
Construction, extension and reconstruction works are not deductible. Only maintenance and improvement works qualify.
If you stop renting before December 31 of the 3rd year, the tax authority can reverse the deficit charged against your global income.
The rental deficit is incompatible with micro-foncier. You must choose regime reel for all your properties (the choice is irrevocable for 3 years).
Financial charges (loan interest) NEVER create a deficit chargeable against global income. They are only deductible from rental income.
Keep all invoices, quotes, DPE reports, and payment proofs for at least 3 years after the last offset. The tax authority can audit.
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