On Schwab the CD rates display the coupon rate and the APR rate. Can someone explain how the APR rate is higher than the coupon rate and which rate to use when comparing to Treasury rates ? (Fidelity does not give this data. also seems that different brokerages have have different offerings at times, so worth shopping around.)
APR vs. APY
The coupon rate (sometimes called APR) is the rate at which interest payments are calculated and paid, without taking compounding into account. The Annual Percentage Yield (APY) is the adjusted rate, taking into account compounding and assuming that interest payments are reinvested at the same coupon rate. APY is a tool to enable comparisons across CDs. Note that interest earned on CDs offered through Schwab CD OneSource is paid at the coupon rate and is not automatically reinvested.