Carroll County, IA follows the Iowa statutory schedule. This page shows that schedule, the county's own website, and the late penalty — the county can still set its own dates, so confirm before you pay.
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…until 2nd half — April 1, 2027
Instalment
Due date
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.
On a $400,000 purchase in Carroll County, IA, property tax comes to about $3,936 a year — roughly $328 a month — at this county's effective rate of 0.98%.
$
Effective rate 0.98% = this county's median owner-occupied tax bill ($1,767, ACS 2022 5-year estimate) divided by the typical home value at the time ($179,621, Zillow, 2022-12-31). Exemptions the seller holds — homestead, senior, veteran — usually do not transfer with the deed, so a new purchase can run above this figure. The county assessor sets the assessed value; this is an estimate, not a quote.
How to pay Carroll County property tax
County website:www.co.carroll.ia.us — start here for the treasurer or tax collector page.
By post: mail to the county treasurer; the postmark usually counts, not the arrival date.
In person: the treasurer's office, with your bill or parcel number.
Escrow: if your mortgage escrows taxes, the servicer pays — you still owe any shortfall.
Is this county verified?
Not yet. Carroll County is on the queue: we publish a county's own published dates once they have been checked against the county website. Ask for it and it moves up. Until then, the Iowa statutory schedule above is the reliable starting point.
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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.