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Rent or Buy?: free money game, renting vs buying over 10 years

Two flats, one decision. Run the real numbers over 10 years and see which choice leaves you richer.

What is Rent or Buy?

Flat A is for rent, flat B is for sale. For ten years, decide what to do with your money: invest or save what's left after housing, buy, overpay the loan, renovate or sell. A chart tracks your net worth against renting and buying, and the best path in hindsight sets the score.

Rent or Buy? is a free personal finance game about the biggest money decision most people make. You get two similar flats, one for rent and one for sale, plus savings, a monthly budget and an example mortgage rate. Over ten years you decide what to do: invest or save what's left after housing, buy, overpay the loan, renovate or sell.

Every year brings news, like a broken boiler, a rent jump or a new metro line, and an example market return. A chart compares your net worth with two simple paths, renting and investing or buying and investing. At the end, you see the best path in hindsight and how close you got.

At a glance

Category
Adventure
Difficulty
Medium
Play time
5–7 min
Price
Free, in your browser, sign-up optional

How to play

Read the scenario
A price, a rent, your savings and an example mortgage rate. Four towns, each with its own numbers.
Choose each year
Invest the difference, keep it in the bank, buy, overpay the loan, renovate or sell. News like a broken boiler or a rent jump hits renters and owners differently.
Watch your net worth
Savings + investments + what the flat would sell for, minus the loan and fees. The chart compares you with renting and buying.
Score
Your net worth after 10 years against the best path in hindsight: 1,000 points for matching it.

Scoring

Your score compares your net worth after 10 years with the best path in hindsight: 1,000 points for matching it, fewer the further below you end.

Net worth is your savings and investments, plus what the flat would sell for minus the loan and 5% selling fees. Prices, rates and returns are examples.

What it trains

Total cost thinking
Counting fees, interest, upkeep and repairs, not just the monthly payment.
Opportunity cost
Seeing that money not spent on housing only helps if it's put to work.
Long-term planning
Weighing choices whose effects only show after years.

Strategy and tips

Count all the costs
Owning means fees, interest, upkeep and repairs, not just the monthly payment.
Invest the difference
Renting only wins if the money you save on housing is put to work.
Fees need time
Buying and selling fees take years of price growth to earn back. Moving in and out is expensive.
Compare rates
Overpaying the loan earns exactly its rate, risk-free. The higher the rate, the better the deal.
Renovate with care
Work rarely adds as much value as it costs; lower bills have to make up the rest.

Why play Rent or Buy?

Rent or buy is often argued as a matter of principle. Running the numbers year by year shows it depends on prices, rents, rates, time and what you do with the money in between.

Frequently asked questions

Is Rent or Buy? free?

Yes. It is free and runs in your browser, with no download. Signing up is optional.

Is this financial advice?

No. Prices, rents, rates and returns are illustrative examples, not a forecast for any real market.

What does net worth mean here?

Your savings and investments, plus what the flat would sell for minus the loan and selling fees.

How is the best path found?

The game tries every combination of yearly choices on your run, knowing the market in hindsight, and keeps the richest one.