Some types of income you receive are not taxable. When you total your gross income to determine whether you are required to file a tax return, do not include your nontaxable income. Keep records of your nontaxable income. Some types of income that generally are not taxable include:
IRS Publication 525 Taxable and Nontaxable Income, contains additional information on whether specific items of income are taxed.
Social Security or Railroad Retirement Benefits. All or a portion of your Social Security or equivalent Railroad Retirement Benefits may be nontaxable. Refer to IRS Tax Topic 423 Social Security and Equivalent Railroad Retirement Benefits for more information.
Scholarship and Fellowship Grants. Some scholarship and fellowship grants may be nontaxable. Refer to IRS Tax Topic 421 Scholarship and Fellowship Grants for more information.