Money Factor Explained: Your Lease's Hidden Interest Rate

You asked the dealer what interest rate the lease carries, and they answered with something like "0.00185." That is not an answer a normal human can use. It is a number designed to be impossible to compare against the loan quote sitting next to it. The fix takes five seconds: money factor × 2,400 = approximate APR. Here is how it works, and how to tell when yours is marked up.

What a money factor actually is

Every lease payment has two parts. One pays for depreciation — the value the car loses while you drive it. The other is a finance charge, and the money factor is the rate that sets it.

The leasing company calculates that charge as (capitalized cost + residual value) × money factor, every single month. So a money factor of 0.00185 on a car with a $38,000 cap cost and a $20,000 residual value costs you $107.30 a month in pure financing — before you have paid for any actual car.

The 2,400 conversion

The math is actually pretty simple. Multiply any money factor by 2,400 and you get its approximate annual percentage rate.

That last row matters. Dealers are allowed to add a markup to the money factor the bank offers, and the markup is pure profit. The Federal Reserve's consumer credit data put average new-car loan rates near 7% in early 2026 — so a lease financed above that deserves an explanation.

Why you cannot see it on the contract

Federal law treats leases and loans differently. A loan must disclose its APR under the Truth in Lending Act, but lease contracts governed by Regulation M only have to show the rent charge — the total finance cost in dollars — not the rate.

So the money factor often never appears on paper. You have to ask for it directly, convert it, and compare. The FTC's leasing guide recommends exactly that before signing anything.

What moves your money factor

Your credit tier is the biggest lever. Lease pricing is tiered just like loan pricing, and Experian's auto finance data shows the gap between top-tier and subprime borrowers is routinely several points of APR.

The rest is the deal itself. Captive lenders (the automaker's own bank) often subsidize money factors on slow-selling models. And unlike the residual value, the dealer markup on a money factor is negotiable — more on that in our lease negotiation guide.

Putting it to work

Once you have the real money factor, the comparison gets honest. Convert it to APR, line it up against your loan offer, and run both sides through the lease vs buy calculator with your actual numbers. If you are still deciding which path fits you at all, start with the full lease vs buy breakdown or jump straight to the math for your budget — say, a $35,000 car or a $50,000 car.

FAQ

What is a good money factor in 2026?

Anything at or below 0.00150 (3.6% APR) is solid for top-tier credit. Promotional factors on subsidized models can dip under 0.00100. Above 0.00292 (7% APR) you are paying more than the average car loan — compare carefully.

How do I convert APR back to a money factor?

Divide the APR by 2,400. A 5% APR equals a money factor of roughly 0.00208.

Can the dealer legally mark up the money factor?

Yes. The bank sets a "buy rate" and the dealer may add to it, keeping the difference. Asking for the buy rate — and being willing to walk — is the only reliable counter.

Does a bigger down payment lower the money factor?

No. A down payment lowers the capitalized cost, which shrinks both the depreciation and finance portions of the payment, but the rate itself stays the same. Some lessors do offer a lower factor in exchange for multiple security deposits.

Is the money factor the same as the rent charge?

No. The rent charge is the total finance cost in dollars over the lease, which is what the contract discloses. The money factor is the rate used to compute it.

Figures here are estimates for general information, not financial advice. Confirm exact terms with your dealer or lender.