If your payoff is $22,000 and the dealer gives you $18,000 for your car, the trade leaves $4,000 unpaid. Paying off the old lender does not, by itself, explain who funds that difference.
Enter your trade-in and payoff in the car deal checker. Keep those two fields separate, even if the dealer describes the transaction as “paying off your car.”
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Where the old debt goes
Here is a fictional purchase with a $33,100 OTD total. That total comes from a $30,000 vehicle, $1,000 rebate, $2,100 entered tax, $300 title/registration, $500 dealer fees, and $1,200 of add-ons.
| Reconciliation line | Amount |
|---|---|
| OTD purchase total | $33,100 |
| Cash upfront | −$4,000 |
| Trade-in credit | −$18,000 |
| Old loan payoff | +$22,000 |
| Estimated balance to finance | $33,100 |
The $4,000 cash contribution offsets the $4,000 trade-in shortfall. The new borrowing therefore equals the OTD total in this example. The cash has not reduced it below that total.
Without the trade-in shortfall, the same purchase and cash contribution would require $29,100. That comparison holds every other input constant; it is an illustration, not a promise that a different trade transaction would keep the same tax amount or vehicle price.
Choose Trade-in with debt in the checker to reproduce all of these inputs. In that example, the dealer's fictional OTD quote is $34,100, which is $1,000 above the component total. The financed balance of $33,100 matches separately. One matching total does not validate the other.
Use the payoff amount, not just the app balance
Request a dated payoff quote from your current lender. The CFPB explains that payoff can differ from the statement balance and that moving unpaid debt into a new loan increases borrowing costs. CFPB guidance
Record the payoff expiration alongside the dealer's trade-in offer. If either changes, recalculate before signing. Do not enter the $4,000 gap as an extra fee after already entering both $18,000 and $22,000: that would count the debt twice.
If the trade offer rises to $19,000 while payoff stays $22,000, the shortfall becomes $3,000. Under the same other inputs, borrowing falls to $32,100. If instead you add $1,000 of cash, borrowing also falls by $1,000, but the old vehicle's equity has not changed. Distinguishing those two actions helps you track the negotiation.
Reconcile the paperwork before and after the trade
Before signing, locate the trade credit, payoff, cash contribution, and new borrowing on the documents. Ask for an explanation of any difference from your worksheet. Keep a copy of the agreed numbers.
After the transaction, confirm that the old lender received the payoff. The CFPB recommends contacting the old lender after one week to check; a new contract alone is not proof that the old account has been settled. CFPB follow-up steps
If replacing the car can wait, read options for a loan with negative equity. If you have decided to replace it, compare the full offers, including the carried debt, rather than treating the new monthly payment as the whole transaction.
