Final answer:
A Keogh plan is a qualified retirement plan for the self-employed that allows individuals to contribute a percentage of their income to a retirement account and receive a tax deduction for those contributions.
Step-by-step explanation:
A Keogh plan is a qualified retirement plan for the self-employed. It was established by Congress in 1962 to provide self-employed individuals and small business owners with a tax-advantaged way to save for retirement. Keogh plans allow individuals to contribute a percentage of their income to a retirement account and receive a tax deduction for those contributions.