Walk-in service is free at the Customer Service Division of the Dayton IRS, 200 W. Second Street (Monday–Friday, 8:30 a.m.–4:30 p.m.). On campus, contact Brenda Reid with tax questions. For questions about refund checks, call 1-800-829-1954. For problem resolution, you can find telephone numbers for assistance at the IRS Telephone Assistance page. To download tax forms and publications, go to the IRS website.