In accordance with Internal Revenue Service (IRS) regulations, Cornell University, which is considered an exempt 501 (c)(3) organization, files the 990 and the 990-T tax returns each year. The 990 form is a public informational document used to describe an exempt business's missions, accomplishments, and to report revenue and expenses. The 990-T form is used to report business income that falls outside of the university's mission, and may therefore be taxable.