ReckonBoxWhy a lease payment is not a loan payment
A lease payment is depreciation plus a rent charge plus tax, which is a different calculation from a loan. You are paying for the part of the car you use up, plus a finance charge, never paying the car off.
Run the default. A $37,000 negotiated price, a $25,000 residual, a 0.0025 money factor, 36 months, 6% tax. Depreciation is the $12,000 the car loses, spread over 36 months, or $333.33. The rent charge is $155.00. Tax on those is $29.30. The payment is $517.63. Nothing there is a principal balance coming down, which is why a lease leaves you with no equity at the end.
The money factor is an APR in disguise
A money factor is the lease interest rate written as a small decimal, and multiplying it by 2400 gives the APR. So the 0.0025 in the default is a 6% APR.
Dealers quote the money factor in place of a rate, and a lot of people never convert it, so they cannot tell whether the financing is cheap or dear. Convert it first. A 0.0025 money factor sounds like nothing and is a 6% loan. A 0.0040 factor is a 9.6% APR, which you would notice instantly if it were written that way. This calculator shows the APR next to the payment so the comparison to a loan is on the table.
| Money factor | APR |
|---|---|
| 0.00100 | 2.4% |
| 0.00250 | 6.0% |
| 0.00400 | 9.6% |
The rent charge that catches people out
The rent charge is not interest on the depreciating part alone. It multiplies the money factor by the price plus the residual, so you pay a finance charge on the full value of the car through the lease, including the $25,000 residual you hand back and never own. On the default that is $155.00 a month, and it does not fall as the lease runs because both the cap cost and the residual are fixed at signing. A higher residual lowers the depreciation you pay but leaves this charge roughly where it was, which is the part of leasing that reads as counterintuitive until you see the formula.
What this does not cover
This is the core payment: depreciation, rent charge, and tax on the monthly, which is how most states apply it. It leaves out the acquisition fee at signing, the disposition fee at the end, and any dealer add-ons, all of which are real money. Mileage limits and the per-mile charge for going over, plus wear-and-tear charges at turn-in, sit outside the monthly math entirely. A few states tax the whole lease upfront rather than the payment, which changes the number.
None of this says whether to lease or buy. It shows what the lease costs and what the money factor really means, and the dealer and a licensed professional confirm the terms and how your state taxes it.
Frequently asked questions
How is a car lease payment calculated? A lease payment is depreciation plus a rent charge plus tax. Depreciation is the price minus the residual, divided by the term. The rent charge is the price plus the residual, times the money factor. On a $37,000 price, a $25,000 residual, a 0.0025 money factor over 36 months at 6% tax, that is $333.33 plus $155.00 plus $29.30, or $517.63 a month.
What is a money factor and how does it convert to APR? A money factor is the interest rate on a lease written as a small decimal, like 0.0025. Multiply it by 2400 to get the equivalent APR, so 0.0025 is a 6% APR. Dealers quote the money factor instead of a rate, which hides how the financing compares to a loan, so converting it is the first thing worth doing.
Why is the rent charge based on the residual too? Because you are financing the car full value during the lease, not just the part that depreciates. The rent charge multiplies the money factor by the price plus the residual, so you pay a finance charge on the residual value you will never own. It surprises people, and it is why a high residual lowers depreciation but not the finance charge.
Does a down payment on a lease make sense? A down payment, called a capitalized cost reduction, lowers the monthly payment by reducing the amount financed, but it is money at risk. If the car is totaled or stolen early, that upfront cash is generally not refunded, while a loan down payment builds equity you could recover. This tool lets you enter one to see the payment effect.
What does this leave out? It leaves out the acquisition fee, disposition fee, and any dealer add-ons, and it assumes tax is applied to the monthly payment, which is the common method but not universal. Mileage limits and wear charges at lease end are separate. For the actual lease terms and how your state taxes a lease, the dealer and a licensed professional are the sources.