Personal Investor Savings Let us make saving easy. Benefits include online services, tiered interest rates and your choice of statement delivery. $100 opening deposit. Minimum balance of $100 required to avoid $2 service charge/statement cycle. Monthly fees may apply. Apply Now Personal Investor Savings Rates Interested in our current Personal Investor Savings Account Rates? Please call us at 406-587-5626. Health Savings Account (HSA) You & your family may qualify for this account if you’re enrolled in a high deductible health plan to cover out of pocket medical expenses. Learn More.