Some savings accounts offer an interest rate which increases depending on the account balance. For example, you will get a 0% interest with an account balance of $0 to $5,000, 0.05% from $5,000 to $250,000, 0.1% from $250,000 to $1,000,000. Those ranges may vary depending on the institution. To access this information, look at the "Interest Rate Description" under each saving account.