For a mortgage of 200,000 euros over 20 years, the required net monthly income is around 3,280 to 3,441 euros depending on the rate obtained. This figure is not fixed: it directly depends on the interest rate, the cost of borrower insurance, and the charges already borne by the household. Understanding how these variables interact allows for a precise measurement of the actual financial effort before submitting an application.
Monthly Payment and Minimum Income: The Figures According to the Interest Rate
The interest rate determines the monthly payment, which in turn determines the minimum income. Over 20 years (240 months), the relationship is mechanical: each tenth of a point modifies the monthly payment by a few euros, which shifts the required income threshold.
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| Nominal Rate (excluding insurance) | Estimated Monthly Payment | Minimum Net Monthly Income (35% debt ratio) |
|---|---|---|
| 3.00% | ~1,109 euros | ~3,169 euros |
| 3.30% | ~1,137 euros | ~3,249 euros |
| 3.50% | ~1,159 euros | ~3,311 euros |
| 3.80% | ~1,192 euros | ~3,406 euros |
These estimates do not take into account borrower insurance. However, the ceiling of 35% debt ratio set by the HCSF applies including insurance. A monthly insurance premium of a few dozen euros is enough to raise the required income by a hundred net euros per month.
The conditions to borrow 200,000 euros over 20 years therefore vary significantly from quarter to quarter, depending on the scales practiced by lending institutions.
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Debt Ratio at 35%: What the Calculation Really Includes
The 35% ratio is often cited as a simple threshold. The reality of banking calculations is more demanding because the numerator aggregates several items that borrowers underestimate.
The formula used by banks divides all credit charges (monthly mortgage payment, borrower insurance, ongoing consumer loans, alimony paid) by the stable net income of the household.
- A car loan of 200 euros per month mechanically reduces the possible mortgage payment and raises the minimum income required to reach a loan of 200,000 euros.
- Borrower insurance, even taken out with an external insurer (delegation), is included in the calculation of the debt ratio since the recommendations of the HCSF.
- Rental income is generally only considered up to 70%, which penalizes investors who rely on rents to compensate.
A household with 3,400 euros net and no credit charges crosses the threshold for 200,000 euros over 20 years. The same household with an ongoing car loan could see their application rejected or have to extend the duration.
Remaining Income: The Criterion That the Debt Ratio Does Not Capture
An application can meet the 35% threshold and still be rejected. Banks examine the remaining income, which is the amount available once all fixed charges are deducted from income.
Thresholds vary from one institution to another, but usual benchmarks increase with the size of the household. A single person with a remaining income deemed too low will have their application requalified, even if their debt ratio shows 33%.
For a loan of 200,000 euros over 20 years, the remaining income becomes the real filter for incomes close to the minimum threshold. A couple earning 3,500 euros net together, with no children and no other credit, generally passes the filter. The same couple with two dependent children risks a blockage on the remaining income, despite a theoretically acceptable debt ratio.
Mortgage Duration and Income Flexibility
The choice of duration is not trivial. Moving from 20 to 25 years reduces the monthly payment and lowers the minimum income, but increases the total cost of the loan.
Over 25 years, the income required for 200,000 euros drops significantly, to around 2,840 euros net per month depending on the rates practiced. However, the additional interest cost over five extra years represents several tens of thousands of euros.
The HCSF limits the maximum duration to 25 years, with a possible extension to 27 years for purchases in VEFA or operations involving a significant portion of work. This flexibility can allow an application to fit within the criteria without increasing the household’s income.
Conversely, shortening the duration to 15 years requires a significantly higher income (beyond 4,000 euros net monthly for the same amount), but the savings on the total cost of the loan are considerable.
Income Considered by Banks
The fixed net salary forms the base, but banks also include other sources under certain conditions. Recurring contractual bonuses are often averaged over the year. Income from self-employed individuals or business owners generally requires three to five years of stable financial statements to be considered at 100%.
Unemployment benefits and social assistance are almost never included in the calculation of borrowing capacity. A household that partially depends on these resources must therefore rely solely on its professional income to assess its real margin.
The income required to borrow 200,000 euros over 20 years remains a moving target. A rate that varies by a few tenths of a point shifts the threshold by several hundred euros of monthly income. Before finalizing a financing plan, the priority is to check the debt ratio including insurance and the actual remaining income, not just the gross salary.