Our investment sweep option can help you earn money overnight on idle checking account balances, regardless of the size of your business. Every night, after all checks and deposits have cleared, excess checking funds are swept into an overnight investment. Earnings are credited to your account each day. At the end of each month, your bank statement will detail all of your investment activity. You can even use the sweep option to pay down a business line of credit. Sweep investments are not deposit accounts and are not insured by the FDIC.