Short answer: if you owe more on your car than the trade-in value, the gap is called negative equity. The CFPB says a dealer or lender may offer to roll that balance into your new loan, “but this will make your new auto loan more expensive.” Under the federal Truth in Lending rule, the gap does not shrink the price: it shows up as an extra amount financed, and the down payment line shows zero rather than a negative number. Before you trade in, get the payoff amount and the trade-in value, and compare paying it down, waiting, or rolling it in. This is general information, not legal or financial advice.
What negative equity means
The CFPB describes financing negative equity as a case “where the trade-in value offered for a consumer’s vehicle is less than the outstanding loan balance and the unpaid balance is rolled into the new loan”. It says this can place you “further underwater on [your] next loan”, which may increase the risk of a deficiency balance if you cannot repay (CFPB, page last modified June 17, 2024, read October 30, 2026; this page may be out of date). For what a deficiency balance is, see behind on car payments and repossession.
First, get two numbers
The CFPB says to find out the following before you decide (CFPB, last reviewed September 12, 2023; this page may be out of date):
- The “payoff amount” on your current loan, which may differ from the balance on your statement because of how interest is calculated, unpaid late fees or charges, or another reason. See loan payoff amount vs balance.
- The trade-in or actual cash value of your car. The CFPB says you can get trade-in estimates from more than one dealership and negotiate the trade-in value.
If you owe less than the trade-in value, the CFPB says to make sure your old loan is fully repaid before the new loan, and to check for any prepayment penalty. If you owe more, you can pay the old loan off now, wait until it is paid down, or include what you still owe in the new loan.
Where the gap shows on your contract
The official comments to the Truth in Lending rule explain how a creditor discloses a trade-in that is worth less than its loan (eCFR, text up to date as of October 28, 2026, read October 30, 2026):
| What the comment says | Comment |
|---|---|
| The down payment can only reduce the cash price. When the lien on the trade-in is more than its value, the creditor must show a zero on the down payment line, not a negative number. | 2(a)(18)-3.i |
| If you pay cash, the creditor may show it all as the down payment and finance the gap as an additional amount financed, or apply the cash to the gap first and show the rest as the down payment. | 2(a)(18)-3.ii |
| The itemization of the amount financed may list your trade-in value, the creditor’s payoff of the old lien, and the resulting additional amount financed. | 18(c)-2.iii |
| The total sale price includes the cash price, the gap financed as an additional amount, and the finance charge. | 18(j)-3 |
The rule itself requires the amount financed, the finance charge, the APR, the payment schedule, the total of payments and, in a credit sale, the total sale price (12 CFR 1026.18(b), (d), (e), (g), (h) and (j), eCFR). You get a written itemization of the amount financed, including amounts the creditor pays to others for you, such as the payoff of your old loan, or a statement that you can ask for one (1026.18(c)). The disclosures come “before consummation of the transaction” (12 CFR 1026.17(b), eCFR).
What rolling it in costs, only for the math
This example is only for the math, and all figures are example figures, not prices, values or rates from any dealer or lender. The new car costs $30,000.00. You owe $20,000.00 on your current car and it is worth $17,000.00 as a trade-in, so the gap is $20,000.00 - $17,000.00 = $3,000.00. With no down payment, taxes or fees, rolling the gap in means you finance $30,000.00 + $3,000.00 = $33,000.00. All three loans use a 7% rate.
| No gap: $30,000.00, 60 months | Gap rolled in: $33,000.00, 60 months | Gap rolled in: $33,000.00, 72 months | |
|---|---|---|---|
| Monthly payment | $594.04 | $653.44 | $562.62 |
| Total of payments | $35,642.40 | $39,206.40 | $40,508.64 |
| Interest (total minus amount financed) | $5,642.40 | $6,206.40 | $7,508.64 |
| Total paid more than the no-gap loan | $39,206.40 - $35,642.40 = $3,564.00 | $40,508.64 - $35,642.40 = $4,866.24 |
A longer term lowers the monthly payment in this example but raises the total of payments. On your own offer, compare the total of payments and the amount financed on each disclosure.
After you sign: check the old loan
If you roll the balance into a new loan, the CFPB says to (from CFPB):
- Find out which department at your old lender can confirm that the old loan has been paid off.
- Wait one week and contact the old lender to check that it was paid off; if not, contact your new lender.
- If it is still not paid off after reasonable efforts, submit a complaint to the FTC at ReportFraud.ftc.gov or the CFPB at consumerfinance.gov/complaint.
- If a dealer promises to pay off your negative equity, make sure it is not included in your new financing or your final loan contract.
Related guides
To compare the rate a dealer offers with a quote from another lender, see dealer car loan rate markup. If you plan to keep your car, see car loan refinance options. If the car is totaled while you owe more than it is worth, see gap insurance on a car loan, and for a leased car, car lease early termination costs.
Questions to ask before you sign
- What is the exact payoff amount on my current loan, and until what date is it good?
- What trade-in value are you giving me, and how much of my old loan is added to the new amount financed?
- What is the total of payments with the gap rolled in, and without it?
- Can I see the itemization of the amount financed, with the payoff of my old loan?
Checklist
- Get your payoff amount and more than one trade-in estimate.
- Compare paying the gap down, waiting, and rolling it in.
- Down payment line: zero, not a negative number; the gap is an extra amount financed.
- Compare the total of payments, not only the monthly payment.
- One week after signing, confirm your old loan was paid off.
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Sources
- CFPB: Should I trade in my car if it’s not paid off? (page last modified September 14, 2023)
- CFPB: Data Spotlight, Negative Equity Findings from the Auto Finance Data Pilot (page last modified June 17, 2024)
- eCFR: 12 CFR 1026.18, Content of disclosures (Regulation Z), current text up to date as of October 28, 2026
- eCFR: Supplement I to Part 1026, Official Interpretations (Regulation Z), current text up to date as of October 28, 2026
- eCFR: 12 CFR 1026.17, General disclosure requirements (Regulation Z), current text up to date as of October 28, 2026
- FTC: ReportFraud.ftc.gov
- CFPB: Submit a complaint
Disclosure: Modern Lending Solutions is not a lender, loan broker or agent for any lender or loan broker, and does not make credit decisions. Any compensation we receive is paid by participating lenders, only for advertising services. This guide is general information, not financial or legal advice.