“Rent is throwing money away” is the most expensive half-truth in European personal finance. Owning throws money away too — mortgage interest, property tax, maintenance, and the returns your deposit never earns — it just hides the bill better. This calculator adds up the unrecoverable costs of owning a specific home and compares them with the rent for a comparable one, so you can see which side of the ledger actually wins at your numbers.
By Kestutis Balciunas · Last reviewed: 17 July 2026 · Figures and rules are 2026-vintage estimates — verify current data before acting. Educational tool, not advice.
How the comparison works
The tool adapts the well-known 5%-rule to European inputs. For the home you enter, it estimates the annual money you spend on owning and never get back:
1 · Mortgage interest = loan (price minus deposit) × mortgage rate. Interest is pure cost — only the principal part of your payment builds equity.
2 · Property tax + maintenance = home value × the percentage you set (default 2%/yr, a common long-run European estimate for upkeep, insurance and local taxes combined).
3 · Minus expected appreciation on the full home value — the one ownership cost that can go negative, because the house working for you offsets the costs above.
4 · Plus the opportunity cost of your deposit: the €70,000 locked in the walls could be compounding in a broad ETF instead. Our compound growth calculator shows what that deposit alone becomes over 20–30 years — usually the most underestimated number in the whole debate.
If that total is higher than a year of rent, renting-and-investing wins at your assumptions; if it is lower, buying wins. The tool also shows the breakeven rent — the monthly rent below which renting is likely the cheaper deal for that price.
A worked example
A €350,000 flat, 20% deposit, 3.5% mortgage, 2% upkeep, 2% expected appreciation, 7% expected ETF return: interest €9,800 + upkeep €7,000 − appreciation €7,000 + deposit opportunity cost €4,900 = €14,700/yr of unrecoverable ownership cost, or €1,225/month of breakeven rent. If you can rent the same flat for €1,100, renting wins by roughly €1,500 a year — provided you actually invest the difference rather than spend it.
Why the answer differs so much across Europe
The same formula produces opposite verdicts in different cities because the inputs swing wildly: price-to-rent ratios run from under 15 in parts of Belgium and Finland to well over 30 in Munich, Paris or Amsterdam, mortgage rates differ by country and fixing period, and property taxes range from negligible to meaningful. That is exactly why a calculator beats a rule of thumb — run your own city’s numbers, not a Canadian average.
What the calculator deliberately leaves out
This is a first-year snapshot, not a 30-year simulation, and it is honest about that. It ignores transaction costs (notary fees and transfer taxes run 6–13% of the price in much of Europe — a huge hurdle if you may move within 5–7 years), the forced-saving discipline a mortgage imposes, rent inflation, and the leverage cut both ways: a mortgaged home is a leveraged bet that magnifies gains and losses. It also can’t price stability — not being evicted by a landlord’s sale has real value that never appears in a spreadsheet.
The same guaranteed-vs-expected logic drives the follow-up question for those who do buy — overpay the mortgage or invest? — which we cover in our mortgage vs invest guide for Europeans. If renting wins for you, park the deposit somewhere sensible while you decide — money market ETFs currently do that job well — and check what consistently investing the monthly difference does to your timeline with the financial freedom calculator. Figures are illustrative; verify current mortgage rates and local costs. Not financial advice.
These numbers make more sense with the guide
The free 12-page Starter Kit turns them into decisions: your first fund, a safe broker, and the tax basics for your country.
Frequently asked questions
Q: Is renting really not throwing money away?
A: Rent buys you housing, exactly as mortgage interest, property tax and maintenance do — none of those come back either. The fair comparison is rent versus the unrecoverable costs of owning, not rent versus the whole mortgage payment, most of which is forced saving into equity.
Q: What is the 5% rule for rent vs buy?
A: A rule of thumb popularised in Canada: owning’s unrecoverable costs run roughly 5% of the home value per year (interest, upkeep, cost of capital), so if annual rent is below 5% of the purchase price, renting is likely cheaper. This calculator computes your own percentage from actual European rates instead of assuming 5%.
Q: Why does the calculator charge me the ETF return on my deposit?
A: Because a deposit is not free money — it is capital that could compound elsewhere. €70,000 invested at 7% earns about €4,900 a year; locking it into a home means giving that up. Economists call it opportunity cost, and skipping it is the most common way rent-vs-buy math flatters buying.
Q: Does this include notary fees and transfer taxes?
A: No — those are one-off transaction costs, not annual ones, and they vary hugely across Europe (roughly 6–13% of the price in Belgium, Germany, France or Spain; less elsewhere). As a rule of thumb, they mean buying rarely pays off if you might sell within five to seven years.
Q: Should I still buy if renting wins on the numbers?
A: Possibly — the spreadsheet is only half the decision. Buying delivers stability, control and inflation-proof housing costs; renting delivers flexibility and liquidity. The calculator tells you the price of each choice, and the honest answer is that renting only wins if you consistently invest the difference.