Which of the following is considered taxable income?

Taxable income includes various forms of income that are subject to federal income tax. Interest earned on savings accounts, CDs, bonds, or any other investment is generally considered taxable income. This means that any interest accrued will need to be reported on your tax return and is subject to taxation at your applicable tax rate.

In distinguishing between the choices given, it's important to note that child support payments are not considered taxable income for the recipient or tax-deductible for the payer. Similarly, insurance proceeds, such as life insurance benefits, are not taxable when received by beneficiaries, and most veterans' benefits are also excluded from taxable income. Thus, among the options provided, interest is the only item that must be included in taxable income calculations.