Is Renting Throwing Money Away? The Real Arithmetic
Owners throw money away too - $246,487 of it over seven years on a $400,000 house. Mortgage interest, property tax, upkeep, and the cost of buying and selling. None of that builds a penny of equity. The honest question is not whether renting wastes money. It is which pile of unrecoverable money is smaller.
What an owner throws away
The phrase assumes rent vanishes and mortgage payments do not. Half of that is true.
A mortgage payment is split. Part goes to the balance and becomes equity. Part goes to interest and is gone forever. And a mortgage is only one of the things an owner pays.
Seven years in a $400,000 house with $80,000 down at 6%:
| Money an owner never gets back | Over 7 years |
|---|---|
| Mortgage interest | $128,005 |
| Property tax | $33,715 |
| Upkeep and repairs | $30,650 |
| Insurance | $12,600 |
| Buying and selling | $41,517 |
| Total gone | $246,487 |
$246,487. None of it builds a penny of equity.
Over the same seven years the renter pays $202,289 in rent - and all of that is gone too.
So the honest comparison is not “money wasted versus money invested”. It is $246,487 of unrecoverable owner costs against $202,289 of unrecoverable rent, and then the question of what each person is left holding.
The number that decides it
Here is what most comparisons skip entirely: a renter still has the deposit.
On this house the deposit and buying costs come to $92,000. A renter who invests that at 7% sees it grow by $102,837 over seven years.
Meanwhile the owner has built $175,587 of equity.
Once you count both sides, the picture on these particular numbers is:
| Staying | Buying really costs | Renting really costs | Cheaper |
|---|---|---|---|
| 3 years | $115,261 | $39,993 | Renting by $75,268 |
| 5 years | $150,420 | $68,798 | Renting by $81,622 |
| 7 years | $184,054 | $99,452 | Renting by $84,602 |
| 10 years | $231,260 | $149,181 | Renting by $82,079 |
| 15 years | $299,524 | $237,879 | Renting by $61,645 |
On these inputs, renting wins throughout - and the gap starts closing after about seven years as the owner’s transaction costs spread and equity builds.
Change the inputs and the answer changes. That is the point.
What flips it
Rent rising faster. A mortgage payment is fixed; rent is not. Push rent growth from 3% to 6% and over ten years renting’s lead collapses from $82,079 to about $7,000. That gap compounds hard.
The deposit earning nothing. Set the investment return to zero - the honest setting if you would spend the deposit rather than invest it - and buying wins by around $29,500 over ten years. Whether you would genuinely invest that money changes the answer more than almost anything else on the page.
A house that appreciates faster, or lower buying and selling costs, both push towards buying.
Staying longer helps buying, because the 3% to buy and 6% to sell is paid once and spread over more years.
Why short stays are the worst case
Look at the three-year row. Buying costs $115,261 against $39,993 to rent.
The reason is that $41,517 of buying and selling costs gets crammed into thirty-six months. Those costs do not care how long you stay - they are the same whether you are there three years or twenty.
If there is one rule worth taking from this, it is that buying for a short stay is where the arithmetic is most brutal.
What the numbers cannot tell you
Security of tenure. The freedom to paint a wall, or to leave in a month. Not having a landlord decide to sell. Being the person who has to fix the roof.
Those are real and they matter, and no calculator weighs them. Some people would pay a genuine premium for the security of owning, and that is a reasonable preference rather than a mistake.
Use the arithmetic for the money. Then decide with the rest in view.
What to actually do
- Put in your own numbers, particularly rent, house price, and how long you would stay.
- Be honest about the deposit. Would you invest it, or spend it? Set the return accordingly.
- Check what rent is doing where you live. Fast-rising rent is the strongest argument for buying.
- Do not buy for a short stay unless something other than money is driving it.
- Stop using the phrase. Owners throw money away too - the question is only which pile is smaller for you.
Run your own figures in the rent vs buy calculator - it counts what an owner never gets back and what a renter earns on the deposit.
Common questions about rent vs buy
Is renting really throwing money away?
No, and the phrase does more harm than almost any other in personal finance. Over seven years on a $400,000 house, an owner pays $128,005 of mortgage interest, $33,715 of property tax, $30,650 of upkeep and $41,517 to buy and sell. That is $246,487 that builds no equity at all.
What actually decides rent versus buy?
Three things, none of which is the monthly payment. How long you stay, what the deposit could earn if invested instead, and the costs of buying and selling. Comparing rent against a mortgage payment - which is what most people do - is comparing the two least important numbers.
Why does the deposit matter so much?
Because a renter still has it. On a $400,000 house the deposit and buying costs come to $92,000. Invested at 7% for seven years that grows by $102,837. Ignoring it makes buying look far better than it is - which is why this calculator asks what you would earn on it.
When does buying win?
Staying a long time, rent rising quickly, a house that appreciates well, and low buying and selling costs. Time matters most, because the cost of buying and selling is paid once and spreads over however long you stay.
What is not in this comparison?
Everything that is not money. Security of tenure, the freedom to paint a wall, the freedom to leave in a month. Those are real and no calculator can weigh them. Use the arithmetic for the money, then decide with the rest in view.