Should You Rent or Buy a Home? The Half Nobody Checks

Should you rent, or buy? It is the biggest money decision most people ever make, and most of them only ever look at half of it.

The half everyone covers is the money: over the years you will actually stay, does buying or renting leave you better off? Worth answering, and our calculator answers it properly with sourced, regional defaults you can move.

The half nobody covers is the one a bank checks first — long before it cares what return you might make. Is this position safe for the person holding it?

Those are different questions, and only one of them ever turns up in the average online comparison.

First half: the money, honestly

The arithmetic is simpler than the internet makes it. Compare only what you genuinely never get back on each side.

On the rent side that is easy. Rent is fully spent. On the buying side it is the part people forget: mortgage interest, property tax, maintenance, insurance, and the amortised cost of buying and later selling. Only the principal you repay is savings. Set unrecoverable cost against unrecoverable cost, not rent against the whole mortgage payment.

Three things then decide it:

• How long you stay. Transaction costs commonly total roughly 8–12% of the price by the time you have bought and later sold. That is a fixed toll, and the longer you stay, the thinner it spreads.
• What homes actually do. US house prices rose 5.03% a year in nominal terms between 1975 and 2024 (FHFA All-Transactions, annual averages). Over the same span inflation ran at 3.66% (BLS CPI-U). That leaves roughly 1.3% a year in real terms — a long way from the doubling-every-decade folklore.
• What the deposit would have earned instead. World equities returned 5.2% a year in real terms from 1900 to 2024 (Dimson, Marsh & Staunton). Money in a house is money not in that.

None of this settles the question, because it depends on your rent, your rate and your years. What it does tell you is which levers matter. Run your own numbers here; the tool shows the break-even year and the appreciation rate buying would need to win.

Second half: is the position safe?

A lender looks at four things before it looks at the return. You should check the same four, about yourself.

One: leverage

A 20% deposit means five-to-one leverage. You control an asset worth five times your cash. On a trading desk that is a real position with a real name. In housing it is called settling down.

$691bn in assets 30.7 : 1 leverage

◄ $22.5bn their own money Borrowed ►

The green sliver is everything Lehman actually owned. A 3.2% fall in the value of the rest wipes out the entire cushion — not most of it, all of it. That is what thirty-to-one leverage means, and it is why the balance sheet had to be made to look smaller than it was.

The arithmetic is symmetrical, even though only one direction ever gets discussed. Take a $400,000 home with $80,000 down. A 10% rise adds $40,000, which is a 50% gain on your money, and that is the version people tell at dinner. A 10% fall removes $40,000 just as easily: half your equity, gone on a price move of one tenth. Put less down and it cuts deeper both ways.

Which is why the question a lender is really asking is not can I afford the monthly payment, but can I survive being this leveraged if life goes sideways — and it is the same question you should be asking yourself.

Two: liquidity

A house is among the least liquid things you can own. Selling it takes months, costs real money, and cannot be rushed by wanting it badly. If your job moved in two years, could you get out without a loss? If that answer feels shaky, you are not buying flexibility — you are giving it up, and paying a toll for the privilege.

Three: concentration, the one almost nobody sees

Here is the number the video did not have room for.

In the Federal Reserve’s 2022 Survey of Consumer Finances, the median American family’s entire net worth was $192,700. Among families who owned their home, median home equity was $201,000.

Those are medians of two different groups, so they cannot be subtracted from one another. I want to be careful about that, because the comparison gets made carelessly all the time. The order of magnitude is the point. For a typical owner the house is not one holding among several. It is the balance sheet.

And it sits in the same city as the job. If the local economy turns, the home value and the income can fall together, which is the exact correlation a lender would refuse to take onto its own book. In a town where the main employer closes, people lose the job and the equity in the same month. That risk is invisible right up until it isn’t.

This is not an argument against owning. It is an argument against owning without noticing, and against letting the house crowd out the diversified engine that actually spreads your risk. If you want property exposure without the concentration, REITs solve some of this and not all of it.

Four: time

Everything above compounds with how long you stay. Buy and sell within a few years and the costs alone can swallow any gain. The longer you will genuinely stay, the more buying makes sense; the less certain you are, the more renting is simply the rational choice.

Read them as a warning system, not a scorecard

These four are not a checklist where everything has to score well. A single hard no outweighs the prettiest spreadsheet. If you already know you are moving in three years, the maths is irrelevant. And the more of the four that wobble, the clearer the answer gets: rent, for now.

When does buying work? When you will stay long enough to outrun the costs, when your income is steady and not tied to the same local economy as the house, and when the deposit does not drain everything you have. Tick those and the leverage finally works for you instead of against you.

When they do not hold, renting is not throwing money away; it is refusing a risk that does not fit your life yet, which is a different thing entirely and deserves to be said in those words.

Two rules that survive every version of this decision

The deposit never comes out of your emergency buffer. That safety layer stays untouched; the home sits on top of it and does not replace it. If you have not built it yet, that is the first question, not this one, and the four-layer structure shows where the house belongs.

And if you are carrying expensive debt, the debt-or-invest question comes before the deposit. A mortgage on top of credit-card debt is leverage on leverage.

The part no spreadsheet holds

A home is also where you live. It is the kitchen your children grow up in, the door no landlord can ask you to walk out of, the walls you are finally allowed to paint whatever colour you like. Knowing nobody can tell you to leave is worth something real.

That value is genuine, it belongs on the scale, and the numbers neither capture it nor need to. The only thing worth insisting on is that it be a clear-eyed choice — I know what this costs me, and I want it anyway — rather than a story reached for afterwards to justify the leverage.

Renting versus buying was never really about rent versus buy. It is about holding the most leveraged, least liquid, most concentrated position most people ever take, with your eyes open, for reasons that are genuinely yours.

Run both halves in the calculator →