Should I tell the salesperson my budget?

Share a total out-the-door budget if you like, but be careful about sharing only a monthly payment target, which can be met by lengthening the loan term or adding products while the total cost rises. Many buyers prefer to let the seller give the first itemized quote. OffLot's "What can I afford?" tool works back from a monthly budget to a price range so you know your own limit before any conversation.