Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Downside to temporarily lowering interest rates?
it is possible that if you do not accept the offer, they will try offering you an even lower rate.  if they offered you close to 0%, you could start carrying a balance and find a better use for the cash you would have spent paying it off. there are plenty of investments with a guaranteed return of over 0%. personally, i am using a 0% offer from one of my cards to invest in the stock market.  i might lose that bet, but on average over the last 10 years, i have not. a pretty safe bet would be paying down your mortgage, or buying a cd that matures when the offer ends. that said, even a 10k$ balance might only pay you around 300$. is that worth the hassle to you?