On rent alone, a Liege apartment takes roughly 18 to 25 years to pay back at typical gross yields of 4% to 6%. With bank leverage and capital growth, the payback on your own funds is faster, but net costs (précompte, charges, rental vacancy) lengthen the pure-rent figure.
Payback time is the mirror image of yield: divide 100 by the yield percentage to get the rough number of years to recover the capital from rent. At a Liege gross yield of 5%, a property pays back in about 20 years from rent alone; at 4% it is nearer 25 years, and at 6% closer to 17 years.
Ground the figures in Liege data. A city apartment near 169,000 euros (Fednot, 2025) let at 700 euros a month earns 8,400 euros a year, a gross payback of about 20 years. But that ignores costs. Net of the précompte immobilier, insurance, charges and a rental vacancy provision (commonly 25% to 40% of gross rent, estate-value.be, 2026), the net payback stretches toward 28 to 33 years.
Leverage changes the picture for your own money. If you funded only 20% to 30% of the price in own funds and the rent covers most of the loan, your personal capital can be recovered far sooner than the property’s full price, because the tenant and the bank do much of the work. This is the core appeal of buy-to-let: the return on own funds outpaces the return on the whole asset.
The counter-intuitive point is that pure-rent payback understates the real result. Capital growth matters: Liege apartment prices rose 6.2% in 2025 (Fednot, 2025), and that appreciation is not captured in a rent-only payback. The honest way to judge an investment is total return (net rent plus capital growth on leveraged own funds), not the simple years-to-repay-from-rent headline.
At a glance
- Rule of thumb: payback years is roughly 100 divided by the yield percentage.
- At 5% gross yield: about 20 years from rent alone; at 4%, about 25 years; at 6%, about 17 years.
- Liege example: 169,000 euro apartment (Fednot, 2025) at 700 euros a month, about 20 years gross.
- Net of costs: payback stretches toward 28 to 33 years (costs 25% to 40% of rent, estate-value.be, 2026).
- With leverage: own-funds payback is faster, since tenant and bank fund most of the price.
- Not counted above: capital growth (Liege apartments up 6.2% in 2025, Fednot), which shortens the true payback.