On December 10, 1915, fifteen people assembled for a meeting held ''for the purpose of discussing the feasibility of organizing a Building and Loan Company in Twin Falls County.'' One week later, another meeting was held which resulted in the sale of stock. On January 7, 1916, the first stockholder's meeting of the Twin Falls Building and Loan Association was held. The following stockholders were present: Dr. C.R. Scott, E.J. Finch, F.F. Bracken, Henry Dinkelacker, O.J. Johnson; J.H. VanTassel, Robert McBride, G.H. Self, I.E. Finney, A.D. Hughes, George Herriott, and C.H. Krengel. At this meeting, the company was incorporated, the by-laws were adopted and E.J. Finch was elected president.
The Twin Falls Building and Loan Association leased its first office space at 118 Shoshone Street West in the Perrine Hotel building. The first loan was made on June 16, 1916 in the amount of $700. At the end of the first year of operations, the Association's total assets were $3,376.99.
In 1919, O.J. Johnson was elected president. On January 12, 1920, the Association changed its name to The Mutual Building and Loan Association. That year it also relocated its office to 303 Shoshone Street in the Addison T. Smith building.
In 1934, the Association made application to the Federal Home Loan Bank for conversion to a federal mutual savings and loan association. This application was granted. On January 28, 1935, the Association's name was changed to First Federal Savings and Loan Association of Twin Falls. At