Call the Department
General Questions by phone
Monday-Friday: 8:00 a.m. - 4:30 p.m. CT
Payments, Billings, & Collections
Monday-Friday: 8:00 a.m. - 6:00 p.m. CT
Mailing Addresses
Monday-Friday: 8:00 a.m. - 4:30 p.m. CT
Monday-Friday: 8:00 a.m. - 6:00 p.m. CT
Hoover State Office Building - 1st Floor
1305 E. Walnut
Des Moines, IA 50319
The Hoover Building is located near the intersection of East 14th Street (Highway 69) and Court Avenue, just south of I-235.
The Department is currently receiving walk-in visitors who need to drop-off or pick up materials. If you need additional tax assistance, please call to set up an appointment to ensure we have someone available to assist you. Specialists are available for same day appointments.
Business Registration:
515-281-3906
Collections, after appeal period expires:
515-725-0264
Examination Section:
515-281-3756
Payment Processing:
515-281-5830
Taxpayer Services:
515-242-6487