Dealer Participation (Rate Markup)
What is dealer participation on a car loan?
Dealer participation, also called dealer reserve or rate markup, is the difference between the rate the lender approves — the buy rate — and the rate written into your contract. The dealer keeps a share of that spread. Markups are capped by the lender at a level set in its dealer agreement, and two points on a $20,000 loan over 72 months costs $23 a month.
Key takeaways
- The lender quotes the dealer a buy rate; the rate on your contract can be higher, and the difference is dealer compensation.
- Lenders cap how much a dealer may add, at a level set in their dealer agreement rather than by any published industry standard.
- Two percentage points of markup on a $20,000 loan over 72 months is $23 a month and about $1,667 in extra interest.
- The markup is negotiable. Asking what the buy rate is, and asking for the deal at buy rate, is a normal conversation at a finance desk.
- Dealer-arranged financing at a marked-up rate can still be the best available option if your own bank or credit union has declined you.
What is dealer participation?
When a dealer arranges your financing, it sends your application to lenders. A lender that wants the deal responds with a buy rate — the rate at which it will purchase that contract from the dealer.
The dealer then writes the retail installment contract with you. It may write it at the buy rate, or at a higher rate. If it writes it higher, the lender pays the dealer a share of the extra interest. That share is dealer participation, also called dealer reserve, rate participation, or simply the markup.
Nothing about it is hidden in the sense of being illegal. It is standard indirect-lending compensation, and most states do not require the buy rate to be disclosed to you.
Buy rate vs contract rate
They are two different numbers and only one of them appears on your paperwork.
| Buy rate | Contract rate | |
|---|---|---|
| Who sets it | The lender, based on your credit tier, the vehicle, and the structure | The dealer, within the lender's cap |
| Where you see it | Not on your contract | On your contract, as the APR |
| Who it benefits | The lender's pricing | The dealer's finance office |
Here is what two percentage points costs on a typical subprime deal. The 18.86% figure is the Experian Q4 2025 average used-vehicle APR for the subprime tier.
| Buy rate 18.86% | Contract rate 20.86% | |
|---|---|---|
| Amount financed | $20,000 | $20,000 |
| Term | 72 months | 72 months |
| Payment | $466/mo | $489/mo |
| Total interest | $13,547 | $15,214 |
$23 a month, $1,667 over the term. That is the entire difference between the two contracts, and everything else about them is identical.
Is it negotiable?
Yes. This is the single most useful thing to know about it.
The finance manager has discretion within the lender's cap, and reducing or removing the markup is a decision they are allowed to make. Dealers give it up routinely to close deals, to hold a customer who is shopping, or to make a payment fit.
Two questions do the work:
1. "What is the buy rate on this approval?" Some managers will tell you. Some will not, and that answer is informative too. 2. "Will you write it at buy rate?" This is a normal request, not an accusation.
Bring a competing approval if you can get one. A pre-arranged offer from a credit union is the strongest form of this conversation, because the dealer now has to beat a real number rather than argue about an abstract one.
When the markup is worth paying
It is worth saying plainly: the dealer did work, and the work has value.
If your credit union declined you and the dealer placed the deal with a lender that approved it, the marked-up rate is the only rate you have. Refusing it on principle leaves you without a car. The markup on a subprime deal is also small relative to the rate itself — two points on top of 18.86% is meaningful, but it is not the reason the rate is 18.86%. That is the credit tier, and it is set before the dealer touches anything.
So the target is not zero markup. The target is knowing the number exists, asking about it, and not paying more than you had to for the same approval.
Related: what rates look like by credit score, spot delivery, and how we make money.
Sources
- Auto Loans Research Reports — Consumer Financial Protection Bureau