Knowledge Hub · Selling your car · Payoff & equity · 6 min read

Trading in a car you still owe on

How the payoff, the 10-day letter and your equity flow through the deal, what the dealer does with your loan, and the mistakes that cost real money.

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Free preview · from the dealership side of the desk

Most trades we see still have a loan on them, and the mechanics are the same every time: the dealer gets a payoff from your lender, pays the loan off after the new deal funds, and the difference between the allowance and what you owe either goes toward the new car or onto the new loan. Simple on paper. In practice, those three numbers (allowance, payoff, equity) are where a store can move money around without you noticing.

Here is how it works from the desk, in order, with the figures labeled so you can follow your own deal. Every dollar amount is an example.

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In the full guide

  1. Step 1: the payoff
  2. Step 2: the equity
  3. Step 3: what the dealer does with your loan
  4. Where the numbers get moved
  5. If you are badly upside down
  6. The checklist

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  • The 6 things that decide your trade-in value
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More on selling your car

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CarMax, Carvana, online buyers and local dealers: who tends to pay more for what kind of car. 6 min · preview

Selling it yourself, safely

How to screen test drives, handle payment and make sure the title transfer releases you from liability immediately. 6 min · preview

Preparing a car for sale: the three-hour investment

Detailing, photos and service records: the three-hour investment that can add $1,500+ to your final price. 4 min · preview

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Every Hub guide on this topic, previewed free.

Keep reading

Seller strategy session

What your car is really worth and how to compare trade-in, instant and private offers.

How to negotiate a trade-in like a pro

What to bring, what to say, when to push, and when to simply say ‘I’ll sell it myself.’ 6 min · preview

Leasing vs. buying: the real math

Money factor, residual value and mileage limits, so you can decide if renting the car for three years is actually cheaper. 7 min · preview

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