A Keogh is a type of retirement account that was created in the United States in 1962. It is a tax-deferred retirement plan for self-employed individuals or unincorporated businesses. Contributions to a Keogh are tax deductible and the funds grow tax-free until they are withdrawn. Withdrawals are taxed as ordinary income and are subject to early withdrawal penalties. Keoghs are regulated by the Internal Revenue Service and offer a variety of investment options.