AutoMath

Financing ~2 min read

Should You Buy Your Leased Car at Lease End?

One number decides it: your car's market value minus the contract buyout price. Positive means buy, negative means walk. Here's the full math, with a calculator.

At lease end you have three options — return it, buy it, or lease something new — and the buyout decision comes down to one comparison: what the car is worth on the used market versus what your contract lets you buy it for. That gap is equity, and its sign tells you what to do.

The one number that decides it

buyout equity = current market value − total buyout cost
total buyout cost = contract residual + sales tax + purchase/doc fees
  • Equity positive (market value > buyout cost) → buy it. You’re acquiring a car for less than it’s worth. You can keep it, or even resell for a profit.
  • Equity negative (buyout cost > market value) → return it. Buying means overpaying; let the leasing company eat the residual miss.

The residual was set years ago when you signed. If used-car values rose since then, your fixed buyout price can be well below market — an accidental bargain. If values fell, the residual is now too high and buying is a bad deal.

Run your buyout

Enter your contract residual, fees, tax, and the car’s current market value (check KBB/Edmunds for your exact trim and mileage):

Your numbersSaved on this device only
📈 Equity (market − all-in buyout)

$2,390

buy-out total $19,610 vs market $22,000

✅ Buy it out
Market value exceeds the all-in buyout — you're buying a car for less than it's worth. Equity comes home with you.
Buyout price
$18,000
Sales tax
$1,260
All-in buyout
$19,610price + tax + fees
Equity %
10.9%of market value

Reasons to buy even on thin equity

  • You know the car’s history. No mystery wear, no auction surprises — you drove it.
  • It’s in demand or hard to replace. A comparable used car may cost more than your buyout.
  • You’re over your mileage allowance. Buying avoids per-mile overage penalties you’d owe on return — sometimes thousands.
  • Excess wear-and-tear charges. If you’d owe damage fees on return, buying sidesteps them.

Reasons to walk even on slight positive equity

  • You want a different car and the equity is too small to matter.
  • The car’s been trouble — out-of-warranty repairs ahead can erase the equity fast.
  • Better deals elsewhere — a manufacturer pulling you into a new lease may offset a small buyout gain.

What the buyout math doesn’t capture

  • Financing the buyout. If you borrow to buy, add the interest cost — see Auto Loan.
  • Future reliability and repairs beyond the warranty.
  • Your mileage/wear penalties if you return — model those separately; they can flip the decision toward buying.
  • Market timing — used values can move between your decision and a later resale.

The one-line version

Buy your leased car when its market value exceeds the residual plus tax and fees — and especially if you’re over on miles or wear. Return it when the buyout costs more than the car is worth and you don’t have a penalty reason to keep it.

AutoMath is an educational tool, not financial advice. Confirm your residual, fees, and current market value before deciding.