Postal Savings System
An Act of Congress of June 25, 1910, established the Postal Savings System in designated Post Offices, effective January 1, 1911. The legislation aimed to get money out of hiding, attract the savings of immigrants accustomed to saving at Post Offices in their native countries, provide safe depositories for people who had lost confidence in banks, and furnish more convenient depositories for working people.
The system paid two percent interest per year. Initially, the minimum deposit was $1, and the balance in an account could not exceed $500, excluding interest.
Deposits were slow at first, but by 1929, $153 million was on deposit. Savings spurted to $1.2 billion during the 1930s and jumped again during World War II, peaking in 1947 at almost $3.4 billion.
After the war, banks raised their interest rates and began offering the same governmental guarantee as the Postal Savings System. In addition, United States savings bonds gave higher interest rates. Deposits in the Postal Savings System declined, dropping to $416 million by 1964.