January 16, 2026
Rental Investment Profitability: My 7 Key Steps for 2025
Introduction
Are you targeting a solid rental yield in 2025? You're not alone. Between rising interest rates (around 3.5% to 3.8% over 20 years), inflation stabilised at around 4%, and the entry into force of new DPE standards (housing classified G will be prohibited from rental as of 1st July 2025), the context demands a rigorous approach.
In 2024, I observed a compression of margins on my rental portfolio in Paris and the provinces: gross yields capped at 3–4%, and gross-to-net differences often reached 2 points. If you don't control every item, you risk falling into “false good deals”: properties that seem profitable until charges, taxation, and vacancy melt away your cash flow.
That's why I've structured a 7-step method. And this is where Soléa Realty comes in: our 100% Mauritian team offers you a free customer service, thanks to fees covered by our partners. We offer personalised support, from property search to your installation, in France as well as in Mauritius, to guarantee a serene and high-performing investment.
1. Step 1: Calculate Gross Profitability
Gross profitability is your first indicator. Quick to calculate, it allows an initial sorting of properties before investing time in a more in-depth analysis.
Formula:
Gross profitability (%) = (Monthly rent × 12) ÷ (Purchase price + Acquisition costs) × 100
Concrete example: You find a T2 for €200,000 + €10,000 in costs (notary, agency). The rent is €800/month.
- Purchase price + costs: €210,000
- Annual rent: €800 × 12 = €9,600
- Gross profitability: (9,600 ÷ 210,000) × 100 ≃ 4.57%
To save time, get started quickly with this rental profitability calculator.
My tip: on an Excel file, test several price scenarios (± 5%) and rent scenarios (± 5%) to see the impact on gross profitability. This will prevent you from becoming too attached too quickly to a property that is not competitive.
Limits: gross profitability does not include non-recoverable charges, taxation, or vacancy. Even a 6% gross can be reduced to 3% net if you don't look further.
2. Step 2: Move to Net Profitability
Net profitability integrates all fixed and variable costs, for a more realistic view:
Formula:
Net profitability (%) = (Annual rent – Non-recoverable charges – Property tax – Insurance – Management fees – Property income tax) ÷ (Purchase price + Costs) × 100
Items to deduct:
- Non-recoverable co-ownership charges (works fund, extraordinary general meetings) – see guide on co-ownership charges
- Property tax
- Non-Occupying Owner (PNO) insurance and Unpaid Rent Guarantee (GLI)
- Rental management fees (6% to 9% excl. VAT of annual rent)
- Property income tax
- Provision for rental vacancy and maintenance work
Figures example (same assumptions as Step 1):
- Annual rent: €9,600
- Non-recoverable charges: €1,500
- Property tax: €1,200
- PNO + GLI insurance: €400
- Management fees: €576 (6% of rent)
- Property income tax: €1,000
- Net profitability: (9,600 – 1,500 – 1,200 – 400 – 576 – 1,000) ÷ 210,000 × 100 ≃ 2.67%
You lose almost 2 points compared to gross profitability! For some older properties, I have seen this differential climb up to 2.5 points.
3. Step 3: Integrate the Tax Effect (« net-net »)
Your personal taxation can be a major lever. Depending on your profile and objectives, several regimes exist: Pinel, property deficit, LMNP or micro-foncier. Each allows you to deduct or abate a portion of your rental income.
Schemes to be aware of
- Pinel: tax advantage of up to 21% of the purchase price over 12 years, subject to rent and resource caps.
- Property deficit: deduction of works from global income (up to €10,700/year).
- LMNP réel: depreciation of the property and furniture, deduction of charges, reduced social contributions.
- Micro-foncier: flat-rate abatement of 30% (income < €15,000/year), simple but often sub-optimal.
Illustration: LMNP réel
- Annual rent: €12,000
- Total charges (excluding depreciation): €5,000
- Depreciation of property + furniture: €10,000 per year
- Marginal tax rate + PS: 30%
- Tax saving: (10,000 + deductible interest 3,000) × 30% = €3,900
- Net-net profitability: (12,000 – 5,000 + 3,900) ÷ 210,000 × 100 ≃ 5.19%
The LMNP réel regime often allows you to gain 1 to 2 points of net-net yield, and to obtain positive cash flow even in tight markets.
4. Step 4: Include All Costs for « Real » Profitability
To ensure the reliability of your calculation, comprehensively list the following costs:
| Item | Description |
|---|---|
| Notary fees | 7–8% for existing properties, 2–3% for new builds (transfer duties and emoluments). |
| Agency fees | 5–10% excl. VAT of the selling price, depending on negotiation. |
| Acquisition works | Energy renovation, diagnostics, refreshers. |
| Co-ownership charges | Current (maintenance) vs non-recoverable (works fund). |
| Provisions for major works | Facade renovation, roofing, insulation (budget €200–500/year). |
| Routine maintenance | Repairs, plumbing, electricity. |
| Rental vacancy | 1–3 months/year depending on the sector. |
| Loan interest | To be included if you are measuring net cash flow after loan. |
| Insurance | Borrower, PNO, GLI (1–3% of rents). |
| Taxes and PS | According to tax regime (réel vs micro-foncier). |
| Provision for unpaid rents | 1–3% of rents or the cost of unpaid rent guarantee. |
Practical tips:
- Distribute initial works vs routine maintenance to optimise your depreciation.
- Consult AGM minutes to anticipate calls for funds.
- Simulate your calculations over a 3–5 year horizon to smooth out major works.
- Prepare an optimistic, neutral, and pessimistic scenario.
5. Step 5: Benchmark Yields by Type and Region
In 2025, rental yields in France vary from 3% to 11% gross depending on the typology and location. Here are two key summaries:
Average Yield by Property Type
| Type | Gross | Net |
|---|---|---|
| Studio / 1-room flat | 6–8% | 4–6% |
| 2-room flat | 5–7% | 3–5% |
| 3+ room flat | 4–6% | 2.5–4% |
| Furnished (LMNP) | 6–9% | 4–7% |
| Short-term rental | 8–12% | 5–10% |
Average Yield by Geographical Area
| Area | Gross | Net |
|---|---|---|
| Major metropolitan areas | 3–5% | 2–4% |
| Medium-sized towns | 6–9% | 4–7% |
| Rural areas | 5–7% | 3.5–5% |
| Mauritius (Soléa off-market) | 5–8% | 4–6% |
How to interpret? A medium-sized town can offer up to 2–3 points more than a metropolitan area, at the cost of a slightly higher vacancy risk. At Soléa Realty, we target properties in Mauritius with an optimal balance between yield and legal security.
6. Step 6: Optimise Profitability with the Right Levers
To go further, combine several levers:
- Smart purchase: scrutinise the DVF database, establish a 6-month watch, systematically negotiate 5% or more.
- Rental method: study local demand (students, professionals, families). Co-living can bring +2 points gross on a T3 (3 bedrooms at €400 = €1,200/month vs €800 unfurnished).
- Targeted works: prioritise insulation (DPE), modernisation of wet rooms, and take advantage of MaPrimeRénov’ and CEE.
- Tax optimisation: opt for LMNP réel, create a property deficit, switch to micro-foncier when appropriate.
- Proactive management: renegotiate your loan (Pretto, VousFinancer), optimise borrower insurance, adjust your management mandate, implement quarterly reporting.
To delve deeper, read this article on optimising your rental profitability.
Mini case study: I acquired a T3 for €180,000 in 2023, transformed into a three-bedroom co-living space. After €15,000 of energy renovation (50% subsidised), I receive €1,200/month. With a renegotiated loan at 2.8%, my net-net yield increased from 3.1% to 5.2%.
7. Step 7: Monitor and Adjust Your Performance with the Right Tools
Continuous monitoring is essential. Here are the tools I use:
- Ynspir: quick simulation of gross, net, cash flow and scenario comparison.
- SimLoc: detailed year-by-year projections, tax impact (LMNP, micro-foncier).
- ANIL/ADIL: free official simulator, calculates IRR and cash flow.
- Excel / Google Sheets spreadsheet: columns for rents, recovered charges, vacancy, loan, insurance, taxes, net cash flow.
Recommended setup:
- Monthly timeline over 5 years
- Columns: rents collected, charges paid, vacancy, loan, insurance, taxes, net cash flow
- Scenarios: optimistic, neutral, pessimistic
- Dynamic charts to monitor the evolution of IRR and cumulative cash flow
Monica's tip: back-test your hypotheses with a property you already own. If your simulation matches your history, you can be more confident about your future projections.
Download our free Excel template to start your own tracking now.
Conclusion & Checklist
You now have a 7-step method to control every euro invested and avoid market pitfalls:
- Calculate gross profitability for initial screening
- Move to net profitability to integrate true costs
- Add the tax effect to obtain « net-net »
- Include notary fees, agency fees, works, provisions for major works
- Benchmark according to typology and geographical area
- Optimise via works, taxation, co-living, proactive management
- Monitor and adjust with simulators and spreadsheets over 3–5 years
Frequent errors: underestimating rental vacancy, forgetting non-recoverable charges, neglecting the DPE impact, relying solely on gross figures.
To take action:
- Download the free calculation template
- Contact Soléa Realty for a personalised diagnosis of your investment project
- Consult 10 tips to improve your rental yield
Now, launch your first calculation and optimise your rental investment profitability in 2025!