Iowa property tax
Official source data 2024
On a $400,000 home in Iowa
$5,571
estimated annual property tax
ACS 2020-2024 ratio of medians. This estimate does not use your parcel’s assessment or district tax rates.
Make it your number.
Your actual bill depends on your local assessment, exemptions, and taxing districts.
A home value. A yearly budget.
These scenarios use the same 1.39% effective rate. They do not predict an individual tax assessment.
| Home value | Annual estimate | Monthly budget |
|---|---|---|
| $100,000 | $1,393 | $116 |
| $150,000 | $2,089 | $174 |
| $200,000 | $2,786 | $232 |
| $250,000 | $3,482 | $290 |
| $300,000 | $4,178 | $348 |
| $350,000 | $4,875 | $406 |
| $400,000 | $5,571 | $464 |
| $450,000 | $6,268 | $522 |
| $500,000 | $6,964 | $580 |
| $600,000 | $8,357 | $696 |
| $750,000 | $10,446 | $870 |
| $1,000,000 | $13,928 | $1,161 |
| $1,250,000 | $17,410 | $1,451 |
| $1,500,000 | $20,892 | $1,741 |
| $1,750,000 | $24,374 | $2,031 |
| $2,000,000 | $27,856 | $2,321 |
Property tax by county.
99 counties and county equivalents in Iowa. Median taxes and values come from ACS 2024.
| County | Effective rate | Median tax paid | Your value estimate |
|---|---|---|---|
| Polk County | 1.68% | $4,396 | $6,709 |
| Linn County | 1.66% | $3,547 | $6,621 |
| Scott County | 1.47% | $3,273 | $5,897 |
| Johnson County | 1.52% | $4,681 | $6,067 |
| Black Hawk County | 1.50% | $2,842 | $6,018 |
| Dallas County | 1.41% | $5,001 | $5,625 |
| Woodbury County | 1.45% | $2,656 | $5,799 |
| Story County | 1.40% | $3,632 | $5,616 |
| Dubuque County | 1.23% | $2,919 | $4,920 |
| Pottawattamie County | 1.57% | $3,067 | $6,269 |
| Warren County | 1.43% | $3,865 | $5,734 |
| Clinton County | 1.53% | $2,461 | $6,130 |
| Cerro Gordo County | 1.45% | $2,410 | $5,793 |
| Muscatine County | 1.50% | $2,732 | $6,001 |
| Marshall County | 1.42% | $2,067 | $5,682 |
| Des Moines County | 1.51% | $2,058 | $6,031 |
| Jasper County | 1.41% | $2,633 | $5,653 |
| Webster County | 1.39% | $2,138 | $5,560 |
| Sioux County | 1.12% | $2,801 | $4,480 |
| Wapello County | 1.58% | $1,974 | $6,312 |
| Marion County | 1.22% | $2,848 | $4,889 |
| Lee County | 1.38% | $1,955 | $5,530 |
| Boone County | 1.37% | $2,910 | $5,480 |
| Plymouth County | 1.07% | $2,455 | $4,290 |
| Benton County | 1.31% | $2,727 | $5,239 |
What can change your bill?
The ACS effective rate is a ratio of medians, not a statutory rate. Local assessed values, levies, classification, caps and exemptions determine the actual bill.
Exemptions & assessment
No uniform flat exemption is applied. Enter your assessor-provided assessment ratio and qualifying exemption for a separate statutory scenario.
Payment dates & appeals
Ordinary halves are due September 30 and March 31 in the payment cycle following the assessment. Confirm the county treasurer's bill, including business-day rules.
The ordinary local Board of Review protest period is April 2 through April 30. Informal assessor review runs April 2 through April 25. Disaster extensions and equalization protests use different periods.
Check Iowa’s official property-tax guidance
Use an assessed value, exemption, and local millage
This separate scenario needs your assessor’s inputs. An exemption applies only to eligible levies; do not apply it to the county’s historical effective rate.
Good questions. Clear answers.
How much is property tax on a $400,000 home in Iowa?
The historical effective-rate estimate is $5,571 per year, or $464 a month. It multiplies $400,000 by 1.39%.
Is the effective rate the rate on my tax bill?
No. It is median real-estate taxes paid divided by median home value in the ACS 2020-2024 survey. Your taxing districts, assessed value, classification and exemptions determine your bill.
Can I subtract a homestead exemption from this estimate?
Use the separate statutory scenario with a qualifying levy. Subtracting an exemption from an ACS effective-rate estimate can double-count relief already reflected in taxes paid.
Does a higher purchase price change my assessment?
Assessment rules and reassessment dates vary by state and locality. Contact the linked official property-tax office before relying on a historical county ratio.
How do I appeal a property-tax assessment?
Read the deadline and procedure on your assessment notice, then use the official state guidance above to locate your assessor or review board. County survey data does not establish your appeal deadline.
Check the source.
Data as of 2024. Retrieved .
- www2.census.gov / Geos20245YR.txt
- www.census.gov / notes-on-acs-estimate-and-annotation-values.html
- www2.census.gov / acsdt5y2024-b01003.dat
- www2.census.gov / acsdt5y2024-b25077.dat
- www2.census.gov / acsdt5y2024-b25103.dat
- www2.census.gov / acsdt5y2024-b25064.dat
- www2.census.gov / acsdt5y2024-b19013.dat
- revenue.iowa.gov / property-tax As of 2026-10-02
- revenue.iowa.gov / iowa-property-tax-overview As of 2026-10-02