An analyst at XYZ United is in charge of setting up the bank accounts. Fraud is a major concern due to the analyst’s past experience with previous employers. The analyst has estimated that the company will earn 3.7% on surplus cash. Surplus cash must be invested in short-term investment grade investments. The company’s closest competitor earned 4.1% for its surplus cash in its latest fiscal year. What bank service should the analyst use to maximize the company's surplus cash?