
On a real estate listing, the displayed yield often hovers around 5 to 7%. This figure, calculated from the gross rent, does not reflect what an investor actually receives. Between the rent collected and the income that remains after deducting charges, management, and taxes, the gap can represent several percentage points. Understanding the distinction between gross rent and net rent is crucial for the reliability of any rental investment simulation.
The reference price already skews the calculation of gross yield
Most articles on rental profitability present a simple formula: annual rent divided by purchase price, multiplied by one hundred. The problem begins with the definition of the purchase price.
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Some calculations are based on the net seller price. Others, like that of Crédit Agricole, include notary fees in the reference amount. This choice significantly alters the result. A property acquired for 200,000 euros with notary fees of 15,000 euros shows a different gross yield depending on whether the denominator is 200,000 or 215,000 euros.
The distinction between gross and net rent on Mon Hebdo Immo details this calculation mechanism and its consequences on property valuation. Before comparing two investment opportunities, one must ensure that the calculation basis is identical.
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The gross yield remains useful for a quick initial sorting among several properties. It allows for the elimination of obviously underperforming options. However, it says nothing about what the property actually yields.

Net rent: what charges reduce rental yield
The transition from gross to net involves subtracting from the annual rent all non-recoverable charges from the tenant. This list varies from property to property, but certain items consistently appear.
- The property tax, which depends on the municipality and the rental value of the property, represents a fixed item often underestimated at the time of purchase.
- The non-recoverable condominium charges cover, in particular, the works voted in general assembly, the structural maintenance of the building, or the fees of the property manager.
- The property management fees, if the property is entrusted to an agency, generally take a percentage of the rent collected each month.
- Vacancy periods, between two tenants, mechanically reduce the annual rent received without decreasing fixed charges.
- Routine maintenance work (replacement of a water heater, restoration between two rentals) impacts the result over time.
SeLoger specifies that net profitability can be assessed independently of the investor’s personal tax situation. This technical point makes it more relevant for comparing two properties, as the calculation does not depend on the buyer’s marginal tax rate.
Net-net profitability: the third level of analysis often ignored
Competitors generally stop at the gross/net duo. There is a third level of calculation, sometimes called net-net profitability or actual profitability, which incorporates the tax impact.
In France, rental income is subject to 17.2% social contributions in addition to income tax. A property that shows a net yield of 4% can drop significantly lower once these contributions are applied, depending on the owner’s marginal tax bracket.
Furnished rental and accounting depreciation
The IGC firm reminds us that depreciation of the property and furniture over a period of 15 to 25 years is possible in furnished rentals. This accounting mechanism reduces the taxable base without cash outflow. Depreciation can bring the tax burden down to zero for several years, which radically alters the net-net yield compared to an unfurnished rental under the real regime.
The choice of tax regime (micro-property, real, LMNP) does not affect the calculation of gross yield or net yield. It only weighs in at the level of net-net profitability. Comparing a furnished property and an unfurnished property solely based on gross yield amounts to comparing two investments without considering their tax implications, which skews the analysis.

Rental investment simulation: the blind spots to check
Online simulators usually calculate a gross yield, sometimes a net yield. Few of them incorporate personal tax and social contributions. A few points deserve manual verification before validating a project.
The property tax can vary from simple to triple between two municipalities for a property of equivalent value. Relying on a national average skews the projection. Asking the seller for the property tax notice remains the most reliable method.
Vacancy is often set to zero in optimistic simulations. In a relaxed rental market, planning for at least one month of vacancy per year provides a more realistic picture of the annual net rent.
Condominium charges and calls for funds
Current charges are listed in the ads, but calls for funds for future works do not appear. Consulting the minutes of the general assembly from the last three years allows for anticipating expenses that will weigh on net yield. A voted renovation but not yet called reduces actual profitability without this appearing in the initial calculation.
The gross yield serves to sort. The net yield serves to compare. The net-net yield serves to decide. Confusing these three levels of analysis leads to overly optimistic projections, and field returns vary on this point according to local markets and property types. The rigor of the calculation, item by item, remains the only reliable filter before signing.