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Updated 2025 Tax Year

Iowa County
Property Tax Guide

Everything you need to know about property taxes in Iowa County, IA. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
Quick Facts
Tax Rate
Approximately 1% of assessed value base rate, varies by taxing districts within Iowa County
1st Due
Sep 30
2nd Due
Mar 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Iowa County, Iowa operates under the state's property tax system, which serves as the primary funding mechanism for local government services including county operations, schools, cities, and various special districts. Property taxes in Iowa County fund essential services such as public safety, road maintenance, emergency services, education, and county administration. The effective tax rate in Iowa County is based on Iowa's statewide average of approximately 1% of assessed value, though actual rates vary significantly by location within the county.

Your specific property tax rate depends on which taxing jurisdictions serve your property, including the county, school district, city (if applicable), and any special districts such as community colleges, hospital districts, or rural improvement zones. These overlapping jurisdictions each levy their own rates, which combine to create your total effective tax rate. Properties in different areas of Iowa County may experience notably different tax burdens due to these varying special district combinations.

Iowa County property taxes are assessed annually based on January 1st valuations, with the tax year running from July 1st through June 30th of the following year. The county assessor determines market values, which are then reduced by applicable tax credits and exemptions before applying the consolidated tax rate from all relevant jurisdictions.

Section 2

What Makes Up Your Tax Bill

Based on preliminary information for FY 2025-2026, Iowa County property tax rates are expected to increase by approximately 10% from the previous year, though final rates have not been officially adopted.

ComponentEstimated Rate per $1,000Description
County General Services$3.50 (maximum allowed)Basic county operations and services
County Rural ServicesVariesServices for unincorporated areas
School DistrictVaries by districtLocal school funding (varies significantly)
Community CollegeVariesIowa Valley Community College District
City LevyVaries by cityMunicipal services (city residents only)
Special AssessmentsVariesHospital districts, drainage districts, other

Note: Final tax rates for FY 2025-2026 have not been finalized. Actual rates vary considerably based on your specific location within Iowa County due to different school districts, cities, and special taxing districts. Contact the Iowa County Assessor's office for precise rates applicable to your property address.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Iowa County, property taxes are due in two installments:

First Installment
Sep 30
Delinquent after Dec 10
Second Installment
Mar 31
Delinquent after Apr 10
Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Iowa County may impose supplemental property taxes for specific purposes as authorized under Iowa Code section 331.424. These supplemental levies are separate from the general county levy and can only be used for designated purposes including substance abuse programs, juvenile care services, election administration, and voter registration costs.

Supplemental taxes are calculated using the same assessed value as your regular property taxes but are applied at different rates and timing. For example, if the county board of supervisors approves a supplemental levy of $0.50 per $1,000 of assessed value for substance abuse services, a property with $200,000 in assessed value would pay an additional $100 in supplemental taxes.

Property owners receive separate billing for supplemental taxes, which may have different due dates than regular property tax installments. These taxes become a lien on the property and follow the same delinquency procedures as regular property taxes if unpaid.

Example Calculation

The following examples use estimated rates for FY 2025-2026 and assume properties qualify for the standard homestead tax credit. All credits require application and are not automatic.

Example 1: $300,000 Home

  • Market Value: $300,000
  • Less Homestead Tax Credit: $4,850 (for assessment year 2024)
  • Net Taxable Value: $295,150
  • Estimated Tax Rate: 32.00 per $1,000
  • Annual Property Tax: $9,445
  • Monthly Escrow: $787

Example 2: $600,000 Home

  • Market Value: $600,000
  • Less Homestead Tax Credit: $4,850
  • Net Taxable Value: $595,150
  • Estimated Tax Rate: 30.00 per $1,000
  • Annual Property Tax: $17,855
  • Monthly Escrow: $1,488

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Less Homestead Tax Credit: $4,850
  • Net Taxable Value: $995,150
  • Estimated Tax Rate: 28.00 per $1,000
  • Annual Property Tax: $27,864
  • Monthly Escrow: $2,322

Note: These are estimates using projected rates. Actual taxes depend on final adopted rates and your property's specific taxing districts.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Iowa County require property tax escrow accounts for borrowers with less than 20% down payment, though some lenders may require escrow regardless of down payment amount. Your lender collects monthly escrow payments equal to 1/12 of your estimated annual property tax bill, plus insurance premiums.

Property taxes in Iowa County are billed semi-annually with due dates of September 1st (first half) and March 1st (second half). Your mortgage servicer typically pays these installments directly to Iowa County from your escrow account. Lenders usually maintain a cushion in your escrow account equal to 2-6 months of payments to ensure sufficient funds are available.

Each year, your lender will provide an escrow analysis statement showing the previous year's activity and any adjustments needed for the coming year. If property taxes increase significantly, you may see higher monthly escrow payments or receive a bill for an escrow shortage. Conversely, if taxes decrease or the account has excess funds, you may receive a refund or see reduced monthly payments.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Iowa County for FY 2025-2026? A: Property taxes are due semi-annually. The first half is due September 1st and becomes delinquent October 1st. The second half is due March 1st of the following year and becomes delinquent April 1st.

Q: What is the homestead tax credit and how do I apply? A: The homestead tax credit reduces your taxable value if you own and occupy your home as your primary residence. You must be an Iowa resident, file Iowa income taxes, and cannot have homestead credit on another Iowa property. Apply once with the Iowa County Assessor - the credit continues while you remain eligible. Applications received after July 1st apply to the next assessment year.

Q: Is there an additional exemption for seniors? A: Yes, homeowners 65 or older may qualify for a homestead tax exemption in addition to the homestead tax credit. For 2023, this exempts $3,250 of taxable value, increasing to $5,000 for 2024 and beyond. You must apply separately for this exemption.

Q: How does the homestead tax credit limit assessment increases? A: The homestead tax credit doesn't reduce your home's market value but provides a dollar credit against your tax bill. Additionally, Iowa law limits assessment increases on homestead properties, helping protect against dramatic tax increases due to rising property values.

Q: Can I pay my property taxes online? A: Yes, Iowa County offers online payment options. You can pay with an eCheck for $0.25 or use a debit/credit card for 2.25% of the payment amount.

Q: What happens if I pay my property taxes late? A: Property taxes become delinquent on October 1st (first half) and April 1st (second half). Delinquent taxes accrue interest and penalties, and the county may eventually sell tax liens or initiate foreclosure proceedings for severely delinquent accounts.

Q: How often are properties reassessed in Iowa County? A: Iowa law requires properties to be assessed annually as of January 1st. However, the assessor may not physically inspect every property each year unless there have been significant changes or improvements.

Q: How do I appeal my property assessment? A: If you disagree with your assessment, you can appeal to the Iowa County Board of Review. Appeals typically must be filed by May 1st following the assessment. Contact the Iowa County Assessor's office for specific appeal procedures and deadlines.

Q: Why do property tax rates vary within Iowa County? A: Different areas of the county are served by different combinations of school districts, cities, community college districts, and special districts (like hospital or drainage districts). Each jurisdiction sets its own levy rate, so your total rate depends on which taxing authorities serve your specific property location.

Q: Do I need to reapply for tax credits each year? A: Most tax credits, including the homestead credit, continue automatically once approved as long as you remain eligible. However, you must notify the assessor if your eligibility changes (such as no longer using the property as your primary residence).

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