The net rental yield, after charges and taxation, remains the only reliable indicator for evaluating a real estate investment. Too many projects are approved based on a gross yield that conceals heavy condominium charges, underestimated vacancy rates, or poorly calibrated tax regimes. We observe that the majority of real estate asset errors occur before signing, in the financial and tax structuring of the deal.
Debt ratio at 35%: the constraint that shapes the entire real estate structure
The 35% debt ratio limit imposed by banks remains the main barrier to any rental investment project. This ceiling applies to net income before tax, and banks generally only count a fraction of the projected rents (often around 70%) in the income calculation.
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Direct consequence: a project that is profitable on paper can be rejected by the bank if the investor already has an ongoing primary residence loan. We recommend simulating one’s actual borrowing capacity even before prospecting, as the gap between theoretical profitability and actual financing often surprises experienced buyers.
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The personal contribution plays an increasing role in the acceptance of applications. Banks that used to lend at 110% (property + notary fees) a few years ago now require a contribution that covers at least the acquisition costs. This tightening changes the profile of investors: first-time rental buyers are retreating in favor of homeowners who leverage the equity of their primary residence.
Old versus new: a price gap that changes rental profitability
Old real estate shows a purchase price that is 20 to 30% lower than new, according to data published by Allianz. This differential is not limited to the entry ticket: it directly impacts rental yield, as rents in old and new properties remain similar in equivalent locations.
An older property purchased for less mechanically generates a better rent/acquisition price ratio. In return, renovation costs can be significant. But this is precisely where the tax advantage lies: property deficits allow renovation costs to be deducted from overall income, within regulatory limits, which reduces tax pressure in the early years.
New properties retain interest in specific cases: absence of work, ten-year guarantees, energy standards already compliant. However, for an investor seeking net yield, a renovated old property remains structurally more efficient, provided that the renovation budget is controlled and construction timelines are not underestimated.
Jeanbrun scheme and housing recovery plan: what changes in 2026 for investment
The 2026 tax framework introduces notable changes with the housing recovery plan and the Jeanbrun scheme. These mechanisms aim to support rental investment through depreciation and property deficit levers, in a post-Pinel context where investors are seeking new tax relief options.
The interest of the Jeanbrun scheme lies in its depreciation approach, closer to the LMNP status than to previous direct tax reduction schemes. For the investor, this means a smoothing of tax over the holding period rather than a benefit concentrated in the early years.
- Depreciation of the property: the accounting deduction of the property’s value reduces taxable income without cash outflow, improving net cash flow
- Enhanced property deficit: energy renovation works benefit from more favorable tax treatment, pushing investors towards old properties to renovate
- Gradual end of restrictive zoning: the selection of eligible cities is expanding, opening secondary markets where purchase prices remain contained and yields are higher
This new framework changes the geographical arbitration. Medium-sized cities with moderate rental tension but low acquisition prices become more attractive than before, where previous schemes concentrated flows towards large metropolitan areas.
Net rental yield: the charge items that simulators overlook
Most online simulators calculate a gross yield (annual rent divided by purchase price) that does not reflect the operational reality. We regularly observe gaps of two to three points between the displayed gross yield and the actual net yield after the first year.
The items that are systematically underestimated:
- Vacancy rate: even in a tight area, count at least one month of vacancy per year between two tenants, plus any potential repair delays
- Non-recoverable condominium charges: facade renovation, elevator replacement, compliance upgrades, these exceptional fund calls weigh on profitability over several years
- Property tax: regularly increasing in most municipalities, it sometimes represents the equivalent of one to two months’ rent
- Unpaid rent insurance absorbs about 3% of the gross rent, a cost often omitted in initial projections
A correctly calculated net yield integrates these four items, plus the applicable taxation according to the chosen regime (micro-property, actual, LMNP). Without this rigor, the investor discovers the reality of their investment at tax declaration time.
Rental management: delegate or manage yourself
Delegated management costs on average a percentage of the rent received, but it secures the rental flow and reduces the risk of regulatory error (diagnostics, rent control, notices). For an investor who holds several units or invests far from home, the time savings far outweigh the cost.
Managing directly remains viable for one or two properties that are geographically close, provided that the legal obligations, which have significantly increased in recent years, are mastered.
The choice between renovated old properties under the property deficit regime and new properties under the Jeanbrun scheme primarily depends on the investor’s tax profile and their ability to mobilize a contribution. A successful real estate investment is built on a spreadsheet, not on a sales brochure. Stabilized rates in 2025 offer a window of clarity to secure financing, but actual profitability is determined by the details of charges and the quality of the tax structure.