Typically, you must report all income you receive during the year, including wages, salaries, tips, commissions, bonuses, business income, capital gains, and any other types of income. You must also report all deductions, credits, and other tax-related information, such as itemized deductions, charitable contributions, and expenses related to work. Other information you may need to report includes any investments you have, such as stocks and bonds, retirement account contributions, and any other assets you may own.