Income from whatever source derived is included in gross income unless there is a specific law treating the income as wholly or partially tax free. This means that the winnings awarded by the U.S. Olympic Committee to American medalists are taxable. These cash prizes are $25,000 for gold, $15,000 for silver, and $10,000 for bronze.
A bill in Congress called the Tax Exemptions for American Medalists (TEAM) Act would exempt these winnings from tax. A similar attempt to exclude winnings was made in Congress in 2012, but it failed at that time.
Shifting income to a later year, such as where you defer taxable interest to the following year by purchasing a T-bill or savings certificate maturing after the end of the current year. Investments in qualified retirement plans provide tax deferral.