Car Lease vs Buy Calculator

Read the calculator result

A monthly car payment tells you only part of the cost of using a vehicle. A lease can include upfront cash and return charges, while a purchased vehicle can leave both resale proceeds and an unpaid loan at the end of the comparison. This calculator brings those items together over the same number of months.

The lease is assumed to run to its normal end. The purchase is assumed to end with a sale and payment of the remaining loan balance on that same date. The outputs show total lease cost, net purchase cost, their difference, and an average monthly cost for each. The average is a way to spread the full scenario cost across time; it isn’t a lender’s monthly bill.

Use actual written quotes where available and label resale value and future expenses as estimates. The calculator doesn’t locate offers, determine lease eligibility, predict vehicle values, or decide which type of agreement suits your driving needs.

Car lease vs buy: separate lease payments from cash due at signing

Enter a quoted monthly lease payment that already includes its applicable tax. The model multiplies that payment by the full lease term. It doesn’t derive a lease payment from a money factor, residual percentage, or capitalized cost, and it doesn’t apply a state tax rule.

The upfront lease field includes nonrefundable cash other than monthly payments. This distinction prevents double-counting the first payment. If a $3,450 amount due at signing consists of a $450 first monthly payment and $3,000 of other nonrefundable charges or reduction, enter $3,000 upfront and $450 as the monthly payment. All 36 monthly payments are already counted in a 36-month run.

Enter disposition and other end fees separately, along with any assumed extra wear charge. A refundable deposit is excluded from the model. Its temporary cash requirement can still matter to your budget even if it’s eventually returned in full.

The FTC’s financing and leasing guidance emphasizes reviewing the full terms, including mileage and the conditions attached to offers. A quoted payment alone doesn’t establish every amount payable at signing or return. Reconcile the quote before transferring numbers into the fields.

How the calculator works

The mileage calculation uses expected annual miles minus the annual allowance, multiplied by the lease term divided by twelve. Negative excess mileage is treated as zero. Multiply the resulting excess miles by the entered charge per mile to find the modeled return charge.

This assumes a uniform annual allowance and the entered per-mile charge applies to all excess miles. It doesn’t interpret extensions, prepaid mileage packages, waivers, tiered charges, or an early termination. A different lease structure needs its actual terms reconciled separately.

Monthly insurance and maintenance are entered separately for leasing and ownership. They remain constant through the holding period. The tool doesn’t look up an insurer’s premium, warranty coverage, fuel consumption, repairs, or registration costs. Identify any costs omitted from your estimates before treating the totals as a complete vehicle budget.

For the purchase, estimated resale value should reflect the expected age, condition, and mileage at the end. The purchase side doesn’t automatically reduce resale value when you change the mileage field. That field calculates lease excess charges; adjusting the owner’s resale assumption is a separate step.

How the purchase loan and sale are treated

Purchase principal equals vehicle price plus entered purchase taxes and fees, minus the cash down payment. The model finances the remaining amount at the contractual annual interest rate divided by twelve. It uses equal monthly installments, caps the final installment at the amount owed, and stops payments after payoff.

At the comparison date, net purchase cost equals down payment + loan payments made + running costs + selling costs + remaining principal − resale proceeds. The remaining principal is included because selling before loan maturity doesn’t make the debt disappear.

Lease cost equals nonrefundable upfront cash + all monthly lease payments + running costs + return fees + wear charges + excess-mileage charges. There’s no resale credit because this scenario returns the leased vehicle. A purchase option or lease buyout is outside this comparison.

The CFPB’s lease-versus-buy explanation distinguishes using a vehicle under a lease from building ownership through a purchase. This calculator makes that endpoint distinction explicit by including sale proceeds only on the ownership side.

Car lease vs buy calculator example: the same 36-month period

Assume a 36-month lease at $450 monthly including tax, $3,000 of other nonrefundable upfront cash, a $400 return fee, and $175 monthly for insurance and maintenance. Driving is 15,000 miles per year against a 12,000-mile allowance, with a $0.25 charge per excess mile and no additional wear charge.

The purchase alternative costs $30,000 plus $2,500 in entered taxes and fees. A $5,000 down payment leaves a $27,500 loan for 60 months at an illustrative 6% contractual annual rate. Ownership running costs are $225 monthly. Assume a $20,000 sale value after 36 months and $500 of selling costs.

The purchase installment is about $531.65, and interest incurred over the 36-month holding period is $3,635.07. Buying costs $3,414.93 less in the entered scenario. Average monthly cost is $781.94 for leasing and $687.09 for buying. The model retains unrounded loan payments internally, so rounded table components can differ from their displayed total by a cent.

Test mileage and resale independently

Reduce expected annual driving to the 12,000-mile lease allowance. Excess mileage becomes zero, removing the $2,250 charge. Lease cost falls to $25,900 and the purchase advantage falls to $1,164.93, with all purchase assumptions unchanged.

In a separate run, restore the original mileage and reduce the purchase resale value from $20,000 to $16,000. Purchase cost rises to $28,735.07, making it $585.07 more expensive than the $28,150 lease. This shows the effect of resale uncertainty without pretending the calculator forecasts a used-car price.

Every dollar change in resale proceeds changes the net purchase cost by one dollar under this model. By contrast, changing the purchase interest rate affects the installment, interest accumulated, and remaining balance together. Inspect the complete result rather than adjusting one line of the old loan calculation.

Avoid mixing horizons and double-counting

A 36-month lease should be compared with 36 months of ownership here, even when the purchase loan lasts 60 months. Comparing the full 60-month loan payments with only one 36-month lease would describe different periods of vehicle use. This calculator instead includes the remaining loan payoff at the common endpoint.

Don’t subtract the down payment again from the remaining loan balance. It already reduced the original principal. Likewise, don’t add purchase taxes twice: the entered taxes and fees already contribute to the amount financed after the down payment.

The interest result is informational within the reconciliation. Interest is already contained in the loan installments paid through the holding date, so adding the displayed $3,635.07 again would overstate the purchase cost. The separate remaining-principal payoff contains the debt still outstanding after those installments.

The chart compares total net costs at the endpoint, with a component reconciliation alongside it. It isn’t a timeline of account balances, a depreciation curve, or an investment-return comparison. Sale proceeds appear as an offset to cost; they aren’t added to the purchase cost.

Use the results with written vehicle quotes

Confirm the vehicle specification, agreement term, payment count, upfront breakdown, mileage allowance, and return conditions. For the purchase, obtain the contractual rate and itemized taxes and fees. Then record where the resale estimate came from and test a lower figure that would matter to your decision.

Consider cash timing separately. A lower net cost can require a larger down payment or a larger monthly installment. The auto loan calculator focuses on financed purchase costs, and the auto rebate vs low APR calculator compares two financing incentives for the same vehicle. Neither substitutes for the full lease-return assumptions used here.

No opportunity-cost return or present-value discounting is applied. The model also excludes early termination, a lease buyout, subsequent leases, refundable deposits, and tax benefits. It describes one full lease against one purchase-and-sale period, with user-supplied costs.

Car lease vs buy calculator questions

Is the average monthly cost the amount I pay every month?

No. It divides the full net cost by the term. Upfront payments, end fees, sale proceeds, and loan payoff occur at different times.

Can the purchase cost be negative?

Yes, mathematically, if entered resale proceeds exceed all modeled costs. Such an outcome reflects your resale assumption; the calculator doesn’t establish that a vehicle will appreciate or sell for that amount.

Does the tool decide whether I qualify for a lease?

No. It compares entered terms and doesn’t evaluate credit, income, contract approval, or advertised incentive eligibility.

Can I use it for returning a lease early?

No. Early termination can use different obligations from a normal end-of-term return. Obtain the actual payoff or termination terms before making that separate comparison.