Lease Buyout Calculator
The residual was fixed years ago; the car has an opinion now.
Work out Lease Buyout. The residual was fixed years ago; the car has an opinion now. Runs on your own figures rather than a national average.
Use a trade-in valuation as the conservative figure.
Zero if the lease has run its full term.
Sales tax rules on lease buyouts differ by state, and a few credit tax already paid during the lease. It is an input here rather than an assumption because it is large enough to reverse the answer.
Equity in the buyout
$1,330
the option is worth exercising
The contract fixed this residual years ago against a forecast, and the car has beaten it by $1,330. Handing the keys back gives that to the leasing company. Buying and reselling captures it, less whatever the sale costs you in time and fees.
How the Lease Buyout Calculator works
The purchase price at the end of a lease was set when the contract was signed, against a forecast of what the car would be worth. If it is worth more than that now, the option has real value and handing the keys back gives that value to the leasing company. If it is worth less, buying is paying above market for a car you have already paid to use.
Also known as: car lease buyout calculator · auto lease buyout calculator · should I buy out my lease
The calculation itself
The buyout price is the residual value in the contract, plus a purchase option fee, plus any payments still owed if you are buying out before the term ends. Sales tax applies in most states, on the buyout amount.
Set that total against what the car is actually worth. The difference is your equity in the option — and unlike most of car finance, it is a genuine option with a value, because the price was fixed years before the market had its say.
If the number is positive, exercising captures it. If it is negative, the leasing company's forecast was optimistic and absorbing that is what they were paid for.
In practice
A $22,000 residual with a $350 purchase option fee, on a car now worth $25,000, in a state charging 6% on the buyout.
Buyout price is $22,350. Tax on the $22,000 residual is $1,320. Total to buy: $23,670. Against a market value of $25,000 there is $1,330 of equity, and exercising the option is worth doing.
Hand the keys back instead and that $1,330 goes to the leasing company, who sell the car for what it is worth. It is not a penalty — it is simply the option expiring unused.
Reverse it: the same residual on a car now worth $19,000 leaves you $4,670 worse off by buying. Walk away, and the forecast error is theirs.
Buying out early
Before the term ends the buyout includes the remaining payments as well as the residual, so it rarely saves money against simply finishing the lease.
Six payments of $450 adds $2,700 to the price. You are paying for the months of use you had contracted for, whether or not you take them.
The genuine reasons to buy out early are practical rather than financial: exceeding the mileage allowance, wear likely to be charged at return, or needing to sell the car. In each case the comparison is against those charges rather than against the residual.
Where the figure deceives
Market value is a range, not a number. A private-party valuation and a trade-in valuation can differ by thousands, and the trade-in figure is the conservative one to test the decision against — it is what you would actually realise quickly.
Tax treatment differs by state, and a few credit tax already paid over the lease term. It is large enough to reverse a marginal decision, which is why it is an input here rather than a default.
If you buy out with a loan, the interest belongs in the comparison too. A buyout that shows $1,330 of equity and takes a 9% loan to complete may not stay ahead.
Acting on it
Get two valuations before the lease ends and compare against the buyout total including tax and fees, not against the residual alone.
If there is meaningful equity, the leasing company may be willing to discuss the residual on a new lease rather than lose you — the equity is a negotiating position as well as a purchase decision.
If there is not, return the car and let the forecast error sit where the contract put it.
Not financial advice. This calculator is for planning and illustration, not financial advice. Real products carry fees, taxes, and terms it does not model. Confirm figures with your lender or a qualified adviser before committing.
Frequently asked questions
How do I know if my lease buyout is a good deal?
Compare the total cost to buy — residual, purchase option fee, tax and any remaining payments — against what the car is actually worth. The difference is your equity in the option, and it is the whole decision.
What is a purchase option fee?
A fixed charge in the contract for exercising the buyout, usually a few hundred dollars. It is separate from the residual and is easy to overlook when comparing the buyout against the car's market value.
Do I pay sales tax on a lease buyout?
In most US states yes, on the buyout amount, and it is large enough to change the answer. The rules differ by state and a few credit tax already paid during the lease, so it is an input here rather than an assumption.
Can I buy out a lease early?
Usually, but the price then includes the remaining payments as well as the residual, so it rarely saves money against simply finishing the term. It is worth doing when you need to exit the mileage terms rather than when you want to save.
What if the car is worth less than the residual?
Hand it back. That is precisely what the option is for: the leasing company took the risk on the forecast, and a residual set above market is their loss to absorb rather than yours to buy.
Put this calculator on your own site
Free to use, on any site, commercial or not. Paste this where you want it to appear. It is a plain iframe, so it works in WordPress, Squarespace, Wix, Webflow, Ghost and anything else that accepts HTML.
<iframe src="https://www.thecalclibrary.com/embed/lease-buyout-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px" loading="lazy" title="Lease Buyout Calculator"></iframe>The only condition is that the credit line stays visible. It sits inside the frame, so you do not have to do anything to keep it.