All 99 Iowa counties and county equivalents. 1 have been checked against the county's own schedule; the rest follow the state schedule below.
| Instalment | Due | Notes |
|---|---|---|
| 2nd half | April 1, 2027 | Second half is payable through March 31 and delinquent April 1. |
| 1st half | October 1, 2027 | First half is payable through September 30; the statute makes it delinquent October 1. |
Iowa property tax is billed and collected county by county, so the collector — not the state — issues the bill. All 99 counties use the same October 1 and April 1 delinquency dates set in Iowa Code 445.37.
CountyTaxDates is an independent reference and is not a government agency. Deadlines change and exceptions apply — always confirm with your county treasurer using the official link on this page. Nothing here is tax, legal or financial advice.