How much interest can money in my HSA earn?

Tiered interest rates

navigate to Balance Interest rate
0.10%
0.20%
0.25%
0.35%
0.45%

The annual percentage yield (APY) is as of 03/01/2019. The interest rate and APY may change after the account is opened. The minimum balance required to open the account is $0.01. Fees may reduce earnings.