PodcastsEssentials: Why do interest rates change?July 17, 2018 On this week’s episode of Essentials, Geoffrey takes a look at interest rates and offers an answer to the question: why do interest rates change? More From This Series In Conversation With: Frank Hracs Essentials: Is it better to lease or buy a car? Essentials: Why do interest rates change? Essentials: What are stocks and how are they purchased? Investing and You Essentials: How does bond trading work?