Iowa business filing due dates
The Iowa deadlines Ordexly tracks for Oct 2026 to Oct 2027. Every date links to the agency page it was checked against (last checked ). Which ones apply to a business depends on its registrations and filing frequency, so confirm with the agency.
Annual reports & franchise tax
| Due | Deadline | Source |
|---|---|---|
| Iowa LLC/LP/Nonprofit Biennial Report (odd years) 2027 | official source |
Sales & use tax
| Due | Deadline | Source |
|---|---|---|
| Iowa Sales/use tax return (monthly) Sep 2026 | official source | |
| Iowa Sales/use tax return (monthly) Oct 2026 | official source | |
| Iowa Sales/use tax return (monthly) Nov 2026 | official source | |
| Iowa Sales/use tax return (annual) 2026 | official source | |
| Iowa Sales/use tax return (monthly) Dec 2026 | official source | |
| Iowa Sales/use tax return (monthly) Jan 2027 | official source | |
| Iowa Sales/use tax return (monthly) Feb 2027 | official source | |
| Iowa Sales/use tax return (monthly) Mar 2027 | official source | |
| Iowa Sales/use tax return (monthly) Apr 2027 | official source | |
| Iowa Sales/use tax return (monthly) May 2027 | official source | |
| Iowa Sales/use tax return (monthly) Jun 2027 | official source | |
| Iowa Sales/use tax return (monthly) Jul 2027 | official source | |
| Iowa Sales/use tax return (monthly) Aug 2027 | official source |
Payroll & withholding
| Due | Deadline | Source |
|---|---|---|
| Iowa Withholding quarterly return (quarterly) Q3 2026 | official source | |
| Iowa Withholding quarterly return (quarterly) Q4 2026 | official source | |
| Iowa Withholding quarterly return (quarterly) Q1 2027 | official source | |
| Iowa Withholding quarterly return (quarterly) Q2 2027 | official source |
Withholding deposits
| Due | Deadline | Source |
|---|---|---|
| Iowa Withholding deposit (semimonthly filers) (monthly) Oct 2026 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Oct 2026 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Oct 2026 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Nov 2026 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Nov 2026 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Nov 2026 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Dec 2026 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Dec 2026 16th-end | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Jan 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Jan 2027 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Jan 2027 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Feb 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Feb 2027 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Feb 2027 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Mar 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Mar 2027 16th-end | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Apr 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Apr 2027 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Apr 2027 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) May 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) May 2027 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) May 2027 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Jun 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Jun 2027 16th-end | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Jul 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Jul 2027 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Jul 2027 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Aug 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Aug 2027 16th-end | official source | |
| Iowa Withholding deposit (monthly filers) (monthly) Aug 2027 | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Sep 2027 1st-15th | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Sep 2027 16th-end | official source | |
| Iowa Withholding deposit (semimonthly filers) (monthly) Oct 2027 1st-15th | official source |
Unemployment / reemployment
| Due | Deadline | Source |
|---|---|---|
| Iowa UI contribution and payroll report (quarterly) Q3 2026 | official source | |
| Iowa UI contribution and payroll report (quarterly) Q4 2026 | official source | |
| Iowa UI contribution and payroll report (quarterly) Q1 2027 | official source | |
| Iowa UI contribution and payroll report (quarterly) Q2 2027 | official source |
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Nearby: Illinois due dates · Minnesota due dates · Missouri due dates · Nebraska due dates · South Dakota due dates · Wisconsin due dates
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