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Washington University is generally exempt from Federal income tax as an educational and charitable institution under section 501(c)(3) of the Internal Revenue Code. The University is also generally exempt from state income tax. This page provides the most recently issued IRS determination letter of the university’s 501(c)(3) status and a link to the university’s Form W-9 (requires a WUSTL key and password to access). Information regarding the US tax residency certificate, or Form 6166, is also available here.


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