Disclose the trade last
Settle the price as if you have no trade. Bring it up after, so neither number can hide in the other.
If a dealer knows about your trade-in from the start, the trade and the price become one conversation. That gives a deal room to move without you noticing.
Here's how it works in round numbers. Say a dealer would sell you the car for $31,000 and value your trade at $14,000. What you'd actually pay is the difference, $17,000. Now imagine they show you $15,000 for your trade instead, which feels like a win, while holding the price at $32,000. The difference is still $17,000. Nothing changed except how it felt. They could even show $15,500 for the trade and $33,000 for the car, and you'd pay $500 more while feeling good about the trade.
The simplest way to keep this clear is to keep the two numbers apart. Negotiate the car's out-the-door price as if there's no trade at all. Once that number is in writing, mention the trade and ask what they'll give you for it.
Because you already have written offers, you know your floor. If the dealer beats it, take their number. If not, sell the car to whoever made the best offer.
This isn't about hiding anything. You're taking one conversation at a time, in an order that keeps each number visible. A dealer can move either the price or the trade to make a deal work, and it pays to know which one moved.
Where it fits in the method
Related in the method
- Why they go to down payment first
- Payment is an output
- A few dollars a month adds up
- Hold off on initialing the worksheet
- The F&I office