Car Lease Calculator

Decode the dealer's lease worksheet: your payment from capitalized cost, residual value, and money factor — with the money factor translated into a real APR.

$
$
% MSRP
$
APR ÷ 2400. E.g., 6% APR ⇒ 0.0025
%

Please check the price, MSRP, residual, and money factor.

Monthly lease payment (with tax)
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Depreciation portion
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Rent charge (interest)
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Money factor as APR
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Residual value
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Total of payments
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The lease payment formula

Depreciation = (Net cap cost − Residual) ÷ Months
Rent charge = (Net cap cost + Residual) × Money factor
Payment = (Depreciation + Rent charge) × (1 + tax rate)
Worked example

Cap cost $38,000 − $2,000 down = $36,000 net · MSRP $40,000 × 58% = $23,200 residual · 36 months · MF 0.0025

Depreciation: (36,000 − 23,200) ÷ 36 = $355.56 · Rent: (36,000 + 23,200) × 0.0025 = $148.00

Pre-tax payment $503.56; with 6.5% tax ≈ $536/mo. The money factor equals 0.0025 × 2400 = 6% APR.

Negotiating a lease like a buyer

Dealers quote payments; the payment hides four levers. Negotiate the cap cost exactly as if buying the car — every dollar off reduces depreciation. Ask for the money factor and multiply by 2400; if it exceeds current auto-loan APRs, push back. The residual is set by the leasing bank and isn't negotiable — but comparing models by residual percentage tells you which cars lease efficiently. Finally, be careful with large down payments: if the car is totaled early, cap reductions are usually gone. Compare the same car as a purchase with the auto loan calculator.

Worked example — a car with a weaker residual, no down payment

Same $38,000 cap cost and $40,000 MSRP, 36 months, MF 0.0025, 6.5% tax — but this model only holds 45% residual value, and there's no down payment this time.

Residual: 40,000 × 45% = $18,000. Depreciation: (38,000 − 18,000) ÷ 36 = $555.56. Rent charge: (38,000 + 18,000) × 0.0025 = $140.00.

Pre-tax payment $695.56; with 6.5% tax ≈ $741/mo — over $200/mo more than the first example, driven almost entirely by the weaker residual and larger depreciation base, not the financing rate.

Monthly payment by residual value (same $38,000 cap cost, no down payment)

Residual valueMonthly payment
40% of MSRP$795
45% of MSRP$741
50% of MSRP$687
55% of MSRP$633
65% of MSRP$526

Common car lease mistakes

Frequently asked questions

How is a car lease payment calculated?

Depreciation ((cap − residual) ÷ months) plus rent charge ((cap + residual) × money factor), then tax.

What is a money factor?

The lease interest rate ÷ 2400. MF 0.0025 = 6% APR. Above ~0.0035, negotiate.

What is residual value?

Predicted end-of-lease value as % of MSRP. Higher residual → cheaper lease.

How much does residual value affect the payment?

On identical terms, a 40% residual gives about $795/mo while a 65% residual gives about $526/mo — over $260/mo apart from residual alone.

Is a large down payment a good idea on a lease?

Usually not — if the car is totaled early, cap-cost reductions typically aren't refunded, while gap insurance only covers what's owed to the leasing bank.

Related calculators

Note: Some states tax leases differently (upfront or on full value). Acquisition and disposition fees not included. Not financial advice. Last reviewed: September 2026.