Iowa Sales Tax Payment and Reporting Rules Reporting period: - Generally: Monthly, by 20th day of each month, if tax collections are $50 or more per month.
- Other: Quarterly, by January 31, April 30, July 31 and October 31, if tax collections are less than $50 per month; Annually, by January 31, if annual tax is not more than $120.
- Administration:
Department of Revenue and Finance
Taxpayer Services
Hoover State Office Building
Des Moines, IA 50319
Phone: 515-281-3114
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