Lease or Buy? The Answer Hinges on One Guess

Comparing monthly payments is the mistake

A lease payment is almost always lower — you're paying for a few years of depreciation rather than for the car. So that comparison tells you which option takes less cash each month, not which is cheaper.

The only comparison that means anything runs over the same period with the end position counted:

• End of a lease: you own nothing
• End of the same span on a loan: you own a car, with a loan against it

That equity is what leasing gives up, and it's the entire difference.

The honest comparison

A $35,000 car, $5,000 down at 6.5% over 60 months, compared across the 36-month lease. At month 36 you'd owe $13,177 and hold $6,823 of equity.

Two hundred and ninety-two dollars, over three years. On typical numbers these are far closer than the monthly figures suggest — the loan payment is $137 a month higher, which is the number that sells leases and the one that means least.

That closeness is the genuinely useful finding. People expect one option to be obviously better. Over a single lease period it usually isn't.

⚠️ And then one guess moves everything

Every other input is contractual and knowable — payments, rates, terms, fees. Resale value is a guess about a used-car market three years away.

A $10,000 swing in the guess moves the answer by $10,000 and flips it twice.

So treat this less as a calculation with an answer and more as a way of seeing how much your answer depends on one assumption. Run it with a pessimistic resale figure as well as a realistic one — if buying only wins on the optimistic number, it doesn't really win.

⚠️ The risk that only exists on one side

At 36 months you still owe $13,177. That figure is the line the resale value has to beat.

Drop below it and your equity goes negative — you're underwater, and the tool says so plainly:

Being underwater isn't just a worse number. It means you cannot sell the car without finding cash to clear the loan — so the flexibility that buying supposedly gives you disappears exactly when you might need it.

Leasing has no equivalent. You hand the car back and walk away. That's genuinely worth something, and it's the strongest argument for leasing that isn't about the monthly payment.

It's also why the pessimistic resale figure is the one to run. Not because it's likely, but because it's the scenario where the two options stop being close.

Two things not in the arithmetic

Mileage limits and wear charges. Exceeding the allowance is charged per mile at the end, and "excess wear" is assessed by the leasing company rather than by you. For a high-mileage driver this alone can decide it. Work out the likely charge and add it to the lease side.

Warranty. A leased car is usually covered for the whole term, so unexpected repair bills fall on the buying side. That pushes slightly toward leasing and appears nowhere in the totals.

Running costs — insurance, tax, fuel, servicing — are left out of both sides on purpose. They're broadly similar either way, and including them would inflate both totals while leaving the difference unchanged.

What decides it, and isn't here

How long you'd actually keep a bought car.

The comparison runs over the lease period because that's the only span where both options exist. But buying's real advantage is keeping the car well past the loan — payments stop and the asset keeps working.

Someone who leases repeatedly always has a payment. Someone who buys and keeps has years without one.

If you reliably drive cars for a decade, buying wins by a distance no lease comparison captures — and that's a decision about your habits, not a calculation.

General information, not financial advice. Terms, tax treatment and what you qualify for all vary — for a commitment this size, talk to a qualified adviser.