What’s the difference between the discount rate and the interest rate when investing in a Commercial Paper?

• Discount Rate (seen on the overview or offer details page):
   This is the rate used to calculate how much less you’ll pay upfront compared to the full face value of the Commercial Paper. The higher the discount rate, the lower your upfront payment.
  
  

• Interest Rate (seen on the confirmation page):
   This is the rate used to calculate how much you’ll earn in total returns by the end of the investment. It reflects the gain on your investment over the period.
  
  

Summarily, the discount rate affects your entry cost, while the interest rate determines your total earnings at maturity.