Offer your thoughts or opinion on the input financial query or topic using your financial background.

If I plan to buy a car in cash, should I let the dealer know?
Ideally you would negotiate a car price without ever mentioning: And other factors that affect the price. You and the dealer would then negotiate a true price for the car, followed by the application of rebates, followed by negotiating for the loan if there is to be one. In practice this rarely happens. The sales rep asks point blank what rebates you qualify for (by asking get-to-know-you questions like where you work or if you served in the armed forces - you may not realize that these are do-you-qualify-for-a-rebate questions) before you've even chosen a model. They take that into account right from the beginning, along with whether they'll make a profit lending you money, or have to spend something to subsidize your zero percent loan. However unlike your veteran's status, your loan intentions are changeable. So when you get to the end you can ask if the price could be improved by paying cash. Or you could try putting the negotiated price on a credit card, and when they don't like that, ask for a further discount to stop you from using the credit card and paying cash.