---
id: faq-0036
title: "Will my trade-in credit apply to the purchase price or just the sales tax?"
category: faq
subtopic: trade-in
page_type: faq
source_url: "https://www.castlekiamchenry.com"
tags: ["trade-in", "financing", "math"]
questions:
  - "How does trade-in credit apply to my new car purchase?"
  - "Does my trade-in value come off the total price?"
  - "Can I use trade-in toward taxes and fees?"
related: [trade-in-financing, trade-in-offer]
dealer: Castle Kia McHenry
---

Your trade-in value comes off the final purchase price of your new vehicle, which reduces what you finance or pay out of pocket. This is sometimes called the 'adjusted cap cost' in a lease. It also lowers your sales tax calculation, since tax is figured on the net amount owed. Our finance team will walk you through the math line-by-line so you see exactly how everything applies. Every deal is unique, so for the clearest picture of your numbers, call (815) 453-8566 and we'll show you the full breakdown.