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Updated 2025 Tax Year

Des Moines County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
Varies by location, typically $25-35 per $1,000 assessed value depending on taxing districts
1st Due
Sep 30
2nd Due
Mar 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Des Moines County's property tax system is the primary funding mechanism for essential local services including schools, county government operations, municipalities, and various special districts. Property owners in Des Moines County pay taxes based on their property's assessed value multiplied by the applicable tax rate for their specific location. The county follows Iowa's state assessment practices, with properties assessed at full market value as of January 1st each assessment year.

Property tax rates in Des Moines County vary significantly depending on your exact location within the county due to overlapping taxing jurisdictions including cities, school districts, community colleges, and special districts for services like fire protection, libraries, and emergency services. For FY 2025, the consolidated tax rate is approximately $34.12 per $1,000 of assessed valuation, though individual property owners may pay more or less depending on their specific taxing districts. The county portion represents just one component of your total property tax bill, with school districts typically comprising the largest portion of most tax bills.

Section 2

What Makes Up Your Tax Bill

ComponentRate per $1,000Description
County General$3.50County operations, services, and infrastructure
City/Municipal$10.80City services (varies by municipality)
School Districts$12.21780K-12 education funding
Community College$2.75Southeastern Community College district
Agricultural Extension$0.15County extension services
Assessor$0.75Property assessment operations
Additional LeviesVariesEmergency services, library districts, other special assessments
Total Base Rate$34.12169FY 2025 consolidated rate

Note: These are FY 2025 rates and actual rates vary by location within Des Moines County based on which municipal and special taxing districts apply to your property. Rural properties may have different municipal rates, and some areas may have additional special district assessments for services like rural fire protection or library districts.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Des Moines 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

Supplemental property taxes in Des Moines County are additional tax assessments that occur when there are changes to a property's assessed value or ownership outside the regular assessment cycle. Common triggers include new construction completion, major improvements, property splits or combinations, or corrections to previous assessments discovered during the tax year. The county assessor determines when supplemental assessments are necessary based on changes that occur after the January 1st assessment date.

When a supplemental tax is levied, it's calculated by applying the current year's tax rate to the change in assessed value, prorated for the portion of the tax year remaining. For example, if you complete a $100,000 home addition in July and it's discovered by the assessor in August, you would owe supplemental taxes on that $100,000 increase in value for the remaining months of the fiscal year. The supplemental bill would be approximately $100,000 × $34.12 per $1,000 × 8/12 months = $2,275 for that partial year, with the full annual increase appearing on the following year's regular tax bill.

Example Calculation

Example 1: $300,000 Home with Homestead Credit

  • Assessed Value: $300,000
  • Homestead Tax Credit Applied: -$4,850 (requires application)
  • Net Taxable Value: $295,150
  • Annual Tax: $295,150 × $34.12/1,000 = $10,068
  • Monthly Escrow: $839

Example 2: $600,000 Home with Senior Credit

  • Assessed Value: $600,000
  • Homestead Tax Credit: -$4,850 (requires application)
  • Elderly/Disabled Credit: -$1,000 (requires application, age 65+)
  • Net Taxable Value: $594,150
  • Annual Tax: $594,150 × $34.12/1,000 = $20,272
  • Monthly Escrow: $1,689

Example 3: $1,000,000 Home with Standard Credits

  • Assessed Value: $1,000,000
  • Homestead Tax Credit: -$4,850 (requires application)
  • Net Taxable Value: $995,150
  • Annual Tax: $995,150 × $34.12/1,000 = $33,951
  • Monthly Escrow: $2,829

Note: All tax credits require annual application and approval. These examples use FY 2025 rates and common credit amounts, which may vary based on individual circumstances and current program funding.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Des Moines County require borrowers to maintain an escrow account for property tax payments, particularly when the loan-to-value ratio exceeds 80%. Your lender will collect monthly escrow payments as part of your mortgage payment, typically calculated as your annual property tax bill divided by 12, plus a cushion amount allowed by federal regulations. Lenders must provide an annual escrow analysis showing how your payments were applied and any adjustments needed for the coming year.

Property taxes in Des Moines County are paid in two installments: the first half is due before October 1st, and the second half is due before April 1st of the following year. Your lender will typically pay these installments directly to the Des Moines County Treasurer when due. If your property taxes increase due to reassessment or rate changes, your lender will adjust your monthly escrow payment accordingly, usually with 60 days written notice. You can verify that your lender is making timely payments by checking your account status on the Des Moines County Treasurer's website or by contacting their office directly.

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 Des Moines County property taxes due for the current fiscal year? A: For 2024 property taxes, the first half installment is due before October 1, 2025, and the second half is due before April 1, 2026. Payments are considered late if received after these dates.

Q: What tax credits are available and how do I apply? A: The Homestead Tax Credit is the most common, providing up to $4,850 in tax reduction and requiring annual application with the county assessor by July 1st. The Elderly/Disabled Tax Credit is available for qualifying seniors and disabled persons. Military Exemption credits are available for qualifying veterans. All credits require application - none are automatic.

Q: How does the Homestead Tax Credit work? A: The Homestead Credit limits the annual increase in your property's taxable value for residential property to a maximum percentage (typically around 3-4% in Iowa), protecting homeowners from dramatic tax increases due to rising property values. You must apply annually with the Des Moines County Assessor's office by July 1st to maintain eligibility.

Q: How often are properties reassessed in Des Moines County? A: Iowa requires properties to be assessed annually as of January 1st, but physical inspections typically occur on a rotating cycle. You have until May 31st to informally appeal your assessment with the assessor, and until May 1st to file a formal protest with the Board of Review.

Q: What are the penalties for late property tax payments? A: Interest begins accruing on unpaid taxes at a rate of 1.5% per month (18% annually) starting the day after the due date. Additional penalties may apply for significantly delinquent accounts.

Q: Can I pay my property taxes online? A: Yes, Des Moines County offers online payment options through their official website. You can pay by electronic check or credit card, though credit card payments may include processing fees.

Q: Why do my taxes vary from my neighbor's even with similar home values? A: Tax amounts can vary due to different taxing districts (city limits, school districts, fire districts), different assessment values, and varying applications of available tax credits. Properties just outside city limits may have different municipal rates.

Q: How do special district taxes work in Des Moines County? A: Special districts for services like libraries, fire protection, emergency services, and drainage add additional levies to your tax bill. These vary by location within the county, so rural properties may have different special district taxes than city properties.

Q: What happens if I disagree with my property assessment? A: You can first contact the assessor informally by May 31st to discuss your assessment. For formal appeals, you must file a protest with the Des Moines County Board of Review by May 1st, providing evidence of your property's correct value.

Q: Do I need to reapply for tax credits every year? A: Most tax credits, including the Homestead Credit, require annual renewal applications filed with the county assessor by July 1st. Missing this deadline means losing the credit for that tax year, with no retroactive applications allowed.

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