Borrowing capacity and choice of city: how much you can invest, and where

The bank lends based on what you can repay without breaking, not on what you want to buy. The official HCSF rule caps your debt-to-income ratio at 35% of net income, insurance included. With 3,500 euros net per month and no existing loan, your total monthly payment is capped at around 1,225 euros.

That payment must absorb everything: the future rental loan, your car loan, your student loan, even a consumer credit. If you already pay 300 euros per month, only 925 euros is left for the rental project. The bank also checks your remaining living budget: 800 to 1,200 euros minimum for a single person, 1,800 euros for a couple, plus 400 euros per child.

Then you turn that monthly payment into borrowed capital. At an average rate of 3.8% over 25 years, 925 euros per month gets you about 192,000 euros of borrowable capital. Over 20 years, the same payment funds only 155,000 euros. The longer you borrow, the larger the envelope, but the heavier the total cost of credit.

Banks do not count future rents at 100%. They apply a default 30% haircut, meaning rents are counted at 70%. If you expect 600 euros of monthly rent, the bank only retains 600 \times 0.7 = 420 euros in your income calculation.

This haircut covers vacancy, non-recoverable charges, and taxes. It protects the bank against optimistic loan applications. Direct consequence: a rental property never fully self-finances in the bank's eyes, even when it self-finances in reality.

For an investor who already owns one or two properties, the rule applies cumulatively. The bank still counts your existing payments as debt, but only credits 70% of rents back. This is what slows down multi-property portfolios: each new loan strains the machine a little more.

With 250,000 euros of total capacity (down payment plus loan) including notary fees, what you can buy changes radically by city. In Paris or central Lyon, you get an 18 to 22 sqm studio renting for 550 to 650 euros per month. Gross yield hovers around 3%, and cash flow stays consistently negative after loan, charges and taxes.

In a dynamic mid-sized city such as Tours, Reims, Le Mans or Angers, the same budget buys a 45 to 55 sqm two-room flat or a small three-room, renting for 650 to 800 euros per month. Gross yield climbs to 5 or 6%. With a standard loan, you target neutral cash flow, sometimes slightly positive if the down payment is enough.

In a small town or outer suburb (Saint-Étienne, Limoges, outskirts of Reims), 250,000 euros pays for a 70 sqm three-room flat or even a small income house. Total rents can exceed 900 euros per month. Gross yield rises to 7%, and cash flow turns positive from month one. The trade-off: higher vacancy risk and slower price appreciation.

Investing in your own city means keeping a hand on management. You visit the property as often as you want before buying. You meet your tenant face to face. You can fix a leak in 30 minutes instead of paying an emergency tradesperson 200 km away.

You also know the local market better than any outside investor. You know which neighborhoods are gentrifying, which carry an unfair bad reputation, and what a two-room flat actually rents for, not just the asking price online. That knowledge is often worth several yield points.

The catch is when your city is too expensive for your budget. If you live in Bordeaux or Annecy, local yields cap at 3% and banking leverage stops working. You pay for the location instead of the profitability. In that case, the attachment to proximity mechanically costs you several thousand euros per year.

First condition: a net yield high enough to absorb delegated management. A property agency takes 7 to 10% of rents including VAT, plus one month of move-in fees. On a 700 euro rent, that is around 700 to 850 euros of management cost per year. If your property yields 6% net locally, it must yield at least 7% to stay just as performant remotely.

Second condition: a truly tight market. Rental demand has to be documented, not assumed. Check Locservice tension scores, average relisting time on SeLoger, and the INSEE vacancy rate of the town. A city with 5% vacancy and one month of average lag is healthy. Above 8% vacancy, you expose your cash flow to multi-month gaps.

Third condition: a trusted local contact. Either a relative who can swing by every six months, a serious management agency, or a concierge service for short-term rentals. Without a physical relay, you sign blind for 20 years, and the first major breakdown costs three times what it should.

Five questions to ask before locking in your investment area. How much will the bank actually lend me given my income and existing loans? With that budget, does my own city offer property at over 5% net yield? Am I willing to delegate management at 8% of rents if I move further out? Do I have a reliable local contact for incidents? Is my holding horizon long enough, at least 8 years, to absorb a market dip?

The classic mistake is to decide on a single criterion: I want to invest near home without checking yield, or I want yield without factoring in distance costs. Both decisions taken alone lead to negative cash flow or unmanageable properties. The right call sits at the intersection of two constraints: what the bank allows, and what the market rewards.

Buy&Rent lets you simulate both questions at once. Enter your salary and existing loans to estimate your borrowing capacity, then compare several properties in several cities with their net yield, cash flow and investment score. In a few minutes you see whether the city 30 minutes from home outperforms the tight metro area you dreamed of.