- e8 L# {% G8 B) E9 v% E ' O- L, Q0 t1 K, X4 b; k$ ?From February 21 to May 2, 2011, Individual income tax enquiries telephone agents are available Monday to Friday (except holidays) from 8:15 a.m. to 9:00 p.m. (local time) and from 9:00 a.m. to 5:00 p.m. on Saturdays (except Easter weekend) by calling 1-800-959-8281. Our automated service is available 24 hours a day, 7 days a week.