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Overview of Iowa Taxes

Iowa has a statewide average effective property tax rate of 1.53%, which is almost 0.50% higher than the 1.08% national mark. As a result, Iowa has the 14th highest effective rate in the country.

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  • About This Answer

    To calculate the exact amount of property tax you will owe requires your property's assessed value and the property tax rates based on your property's address. Please note that we can only estimate your property tax based on median property taxes in your area. There are typically multiple rates in a given area, because your state, county, local schools and emergency responders each receive funding partly through these taxes. In our calculator, we take your home value and multiply that by your county's effective property tax rate. This is equal to the median property tax paid as a percentage of the median home value in your county.

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  • Our Tax Expert

    Jennifer Mansfield Tax

    Jennifer Mansfield, CPA, JD/LLM-Tax, is a Certified Public Accountant with more than 30 years of experience providing tax advice. SmartAsset’s tax expert has a degree in Accounting and Business/Management from the University of Wyoming, as well as both a Masters in Tax Laws and a Juris Doctorate from Georgetown University Law Center. Jennifer has mostly worked in public accounting firms, including Ernst & Young and Deloitte. She is passionate about helping provide people and businesses with valuable accounting and tax advice to allow them to prosper financially. Jennifer lives in Arizona and was recently named to the Greater Tucson Leadership Program.

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Iowa Property Taxes

Photo credit: ©iStock.com/Jean-Francois Rivard

Property taxes in the state of Iowa are a major source of revenue for local governments and services, including public schools. Taxes are collected annually, based on assessed property values that are recalculated every two years.

The state’s average effective property tax rate is 1.53%, which ranks among the top 15 rates in the U.S. However, since rates are determined locally, property taxes vary greatly between cities and counties within Iowa.

If you’re considering buying a home in any county in Iowa, check out our mortgage guide to learn about rates and the details of getting a mortgage in the Hawkeye State.

A financial advisor in Iowa can help you understand how homeownership fits into your overall financial goals. Financial advisors can also help with investing and financial plans, including taxes, homeownership, retirement and more, to make sure you are preparing for the future.

How Iowa Property Taxes Work

Iowa property taxes are paid annually in two installments, due on Sept. 1 and March 1 every year (though they are not considered late until the following month). Taxes are based on two factors: the assessed value of the property and the total local tax rate. Property values in Iowa are assessed every two years by county and city assessors.

Every county has its own assessor, as do eight individual cities. The assessor looks at market and property factors to determine the market value of the property. Assessed value, to which tax rates apply, is based on market value. The total statewide assessed value of residential property cannot increase by more than 3% annually. Thus, each year the state "rolls back" home values by applying a ratio calculated annually by the state's director of revenue. For 2019 and 2020, that ratio is 71.25% and 67.25%, respectively.

There are a number of property tax credits and exemptions that can reduce the property taxes you owe. The most common is the Homestead Credit, which reduces your assessed value by $4,850. Other Iowa credits and exemptions include the Disabled Veteran’s Homestead Tax Credit, the Military Exemption and the Senior Citizens Property Tax Credit.

Iowa Property Tax Rates

Property tax rates in Iowa are determined annually depending on the budget requirements of local tax authorities and the total taxable value of property in a tax district. If taxable value increases one year and the budget requirements stay the same, tax rates will fall. If they decrease and requirements stay the same, tax rates will rise.

Tax rates are denominated in dollars per thousand. So if your total tax rate is 20, that would mean you owe $20 in taxes for every $1,000 in assessed value. On a home with an assessed value of $200,000, the total tax bill would be $4,000.

The table below shows the average effective tax rates for every county in Iowa. Effective tax rates are calculated by determining median annual tax payments as a percentage of median home value.

CountyMedian Home ValueMedian Annual Property Tax PaymentAverage Effective Property Tax Rate
Adair$93,200$1,3061.40%
Adams$84,900$1,0471.23%
Allamakee$122,800$1,5111.23%
Appanoose$78,000$1,2271.57%
Audubon$68,800$9901.44%
Benton$147,800$2,0541.39%
Black Hawk$139,300$2,2561.62%
Boone$130,500$1,9201.47%
Bremer$155,100$2,2451.45%
Buchanan$132,500$1,8771.42%
Buena Vista$111,100$1,4461.30%
Butler$112,100$1,6221.45%
Calhoun$77,800$1,0541.35%
Carroll$127,400$1,3101.03%
Cass$93,600$1,4621.56%
Cedar$143,800$1,8291.27%
Cerro Gordo$121,500$1,6391.35%
Cherokee$89,200$1,0611.19%
Chickasaw$105,100$1,2551.19%
Clarke$105,000$1,5961.52%
Clay$115,700$1,4891.29%
Clayton$116,500$1,5951.37%
Clinton$112,400$1,8421.64%
Crawford$93,400$1,3501.45%
Dallas$218,000$3,3191.52%
Davis$109,100$1,7011.56%
Decatur$76,300$1,2631.66%
Delaware$126,000$1,7951.42%
Des Moines$101,400$1,6671.64%
Dickinson$175,900$1,7901.02%
Dubuque$157,200$2,2641.44%
Emmet$85,700$1,3081.53%
Fayette$90,800$1,2831.41%
Floyd$102,400$1,3671.33%
Franklin$87,100$1,2431.43%
Fremont$100,200$1,3631.36%
Greene$88,900$1,2541.41%
Grundy$129,900$1,5621.20%
Guthrie$112,600$1,4871.32%
Hamilton$98,900$1,4951.51%
Hancock$97,600$1,1851.21%
Hardin$91,300$1,2781.40%
Harrison$107,600$1,4731.37%
Henry$107,900$1,6601.54%
Howard$107,700$1,3481.25%
Humboldt$93,900$1,3801.47%
Ida$91,900$9521.04%
Iowa$143,900$1,8251.27%
Jackson$117,000$1,6061.37%
Jasper$122,800$1,9201.56%
Jefferson$114,300$1,6971.48%
Johnson$210,400$3,3731.60%
Jones$130,700$1,6891.29%
Keokuk$83,700$1,2611.51%
Kossuth$104,300$1,0961.05%
Lee$90,200$1,3661.51%
Linn$150,600$2,6491.76%
Louisa$104,200$1,4711.41%
Lucas$84,900$1,4141.67%
Lyon$125,200$1,3601.09%
Madison$160,400$2,4401.52%
Mahaska$110,100$1,6431.49%
Marion$146,900$2,0721.41%
Marshall$104,600$1,6721.60%
Mills$157,000$2,3151.47%
Mitchell$112,300$1,3691.22%
Monona$84,300$1,0001.19%
Monroe$99,100$1,4391.45%
Montgomery$81,800$1,3711.68%
Muscatine$128,100$2,1501.68%
O'Brien$108,000$1,2851.19%
Osceola$89,500$9271.04%
Page$87,600$1,3311.52%
Palo Alto$98,100$1,2311.25%
Plymouth$150,200$1,8021.20%
Pocahontas$73,400$7941.08%
Polk$165,500$3,2121.94%
Pottawattamie$133,500$2,4141.81%
Poweshiek$131,100$1,8291.40%
Ringgold$79,600$1,2231.54%
Sac$88,100$9781.11%
Scott$153,200$2,5501.66%
Shelby$111,700$1,4981.34%
Sioux$153,800$1,8051.17%
Story$172,900$2,7031.56%
Tama$105,300$1,4811.41%
Taylor$76,100$1,0561.39%
Union$94,300$1,5711.67%
Van Buren$82,700$1,1941.44%
Wapello$81,000$1,4141.75%
Warren$171,400$2,9091.70%
Washington$140,400$2,0161.44%
Wayne$74,700$1,0881.46%
Webster$95,300$1,4931.57%
Winnebago$94,400$1,2601.33%
Winneshiek$161,500$1,9351.20%
Woodbury$110,700$1,8251.65%
Worth$98,000$1,1601.18%
Wright$79,200$1,2621.59%

Looking to calculate your potential monthly mortgage payment? Check out our mortgage calculator.

Polk County

If you are looking for low property tax rates in Iowa, Polk County may not be your best bet. The county’s average effective property tax rate is 1.94%, which is the highest rate in the state. Unsurprisingly, the state's $3,212 median annual tax payment falls in the top three of Iowa counties. The highest property tax rates in the county can be found in Des Moines.

If you have questions about how property taxes can affect your overall financial plans, a financial advisor in Des Moines can help you out.

Linn County

Linn County is in eastern Iowa and contains the city of Cedar Rapids. The typical homeowner in Linn County pays $2,649 annually in property taxes, about $550 more than the state median. The county’s average effective property tax rate of 1.76% is also higher than the state mark (1.53%).

Scott County

With a population of around 171,000, Scott County is the third most populous county in Iowa. The average effective property tax rate in Scott County is 1.66%, which is still higher than the state average.

Johnson County

The median property tax payment among homeowners in Johnson County is $3,373 per year. That's the highest annual payment in the state. The county also has the second highest property values in the state. With that being said, Johnson County’s average effective property tax rate is only the 16th highest in the state at 1.60%.

Black Hawk County

Photo credit: ©iStock.com/PhilAugustavo

The average property tax rate in Black Hawk County is more than $30 per $1,000 of assessed value. Tax districts within the city of Waterloo have the highest rates in the county, as some areas reach nearly $40 dollars per $100,000.

Homeowners in the county can pay a lower effective rate than that by claiming exemptions, though, such as the Homestead Exemption described above.

Woodbury County

Located in western Iowa, Woodbury County has the 12th highest average effective property tax rate in the state at 1.65%. That means a homeowner with a home worth the county median ($110,700) can expect to pay $1,825 annually in property taxes.

Dubuque County

Property taxes in Dubuque County are cheaper than those in the rest of Iowa’s largest counties. The county’s average effective property tax rate of 1.44% is also lower than the state average of 1.53%, but still higher than the 1.08% national average.

Pottawattamie County

Pottawattamie County sits across the Missouri River from the city of Omaha, Nebraska. The county’s average effective property tax rate of 1.81% ranks second in the state of Iowa. So based on a home value of $133,500 (the median for Iowa), residents can expect to pay $2,414 annually in property taxes.

Story County

A typical homeowner in Story County pays $2,703 in property taxes annually, fifth most of any county in the state. In part, that is a result of high home values, as the median home value currently sits at $172,900. That is among the highest marks in the state. The county's 1.56% effective property tax rate is just about in line with the 1.53% state average.

Dallas County

Dallas County is located west of Polk County and Des Moines. It is the 10th most populous county in the state. While home values in Dallas County are higher than those in Polk County, the property tax rate is significantly lower. The average effective property tax rate in Dallas County is 1.52%.

Property Tax: Which Counties are Getting the Best Bang for Their Buck

SmartAsset’s interactive map highlights the places across the country where property tax dollars are being spent most effectively. Zoom between states and the national map to see the counties getting the biggest bang for their property tax buck.

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Rank County Property Tax Rate School Rating Crimes Per 100k People

Methodology

Our study aims to find the places in the United States where people are getting the most for their property tax dollars. To do this we looked at school rankings, crime rates and property taxes for every county.

As a way to measure the quality of schools, we analyzed the math and reading/language arts proficiencies for every school district in the country. We created an average score for each district by looking at the scores for every school in that district, weighting it to account for the number of students in each school. Within each state, we assigned every county a score between 1 and 10 (with 10 being the best) based on the average scores of the districts in each county.

For each county, we calculated the violent and property crimes per 100,000 residents.

Using the school and crime numbers, we calculated a community score. This is the ratio of the school rank to the combined crime rate per 100,000 residents.

We used the number of households, median home value and average property tax rate to calculate a per capita property tax collected for each county.

Finally, we calculated a tax value by creating a ratio of the community score to the per capita property tax paid. This shows us the counties in the country where people are getting the most bang for their buck, or where their property tax dollars are going the furthest.

Sources: US Census Bureau 2017 American Community Survey, Department of Education, Federal Bureau of Investigation, State Police or Justice Department websites