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Updated 2025 Tax Year

Poweshiek County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
2.5% to 4% of assessed value, varies by taxing district location
1st Due
Sep 1
2nd Due
Mar 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Property taxes in Poweshiek County, Iowa, fund essential local services including schools, county operations, and various special districts. The county follows Iowa's property tax system where your tax bill is calculated by multiplying your property's assessed value by the applicable tax rate, which varies significantly by location within the county due to different combinations of taxing districts.

Poweshiek County property taxes are collected semi-annually with due dates of September 1st for the first half and March 31st for the second half. Tax rates in the county typically range from approximately 2.5% to 4% of assessed value depending on your specific location and the taxing districts that serve your property. These rates can vary considerably between rural and urban areas, as rural properties may be subject to additional rural services levies while urban properties fall under different municipal tax structures.

The county is divided into rural and urban tax districts, with rural Poweshiek County having a taxable valuation base of over $1.1 billion and urban areas contributing an additional $416 million in taxable value. Your exact tax rate depends on which school district, city (if any), and other special taxing districts serve your property location.

Section 2

What Makes Up Your Tax Bill

Note: 2025 property tax rates are not yet finalized. The following represents the typical structure for Poweshiek County tax bills:

ComponentEstimated Rate RangeDescription
County General0.8% - 1.2%Basic county services, roads, administration
School District1.5% - 2.5%Local school district operations and debt service
City/Municipal0.3% - 0.8%City services (urban properties only)
Rural Services0.2% - 0.5%Rural fire protection, services (rural properties only)
Special Assessments0.1% - 0.3%Drainage districts, other special purposes

Total Effective Rate: 2.5% - 4.0% of assessed value

Tax rates apply to the levy year running from July 1 to June 30, with bills typically reflecting the fiscal year rates. Your specific rate depends on your exact location within Poweshiek County and which combination of taxing districts serve your property. Contact the Poweshiek County Assessor's office for your specific district tax rate information.

Section 3

When Are Property Taxes Due?

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

First Installment
Sep 1
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 taxes in Poweshiek County are additional tax bills issued when there are changes in property ownership, improvements, or corrections to assessments during the tax year. These most commonly occur when new construction is completed, property changes hands, or when assessment errors are discovered and corrected.

The supplemental tax is calculated by applying the current year's tax rate to the difference between the old and new assessed values. For example, if you complete a home addition that increases your assessed value by $50,000, and your total tax rate is 3.2%, you would receive a supplemental tax bill for approximately $1,600 ($50,000 × 0.032). This supplemental amount is prorated based on the portion of the tax year remaining when the change took effect.

Supplemental tax bills are issued separately from your regular September and March tax bills and have their own due dates, typically 30 days from the issue date. These taxes become part of your ongoing tax obligation and will be reflected in subsequent regular tax bills for future years.

Example Calculation

Example 1: $300,000 Home

  • Assessed Value: $300,000
  • Less: Homestead Credit (if applied): -$6,500
  • Net Taxable Value: $293,500
  • Tax Rate (example): 3.2%
  • Annual Tax: $2,988
  • Monthly (if escrowed): $249

Example 2: $600,000 Home

  • Assessed Value: $600,000
  • Less: Homestead Credit (if applied): -$6,500
  • Net Taxable Value: $593,500
  • Tax Rate (example): 3.2%
  • Annual Tax: $5,992
  • Monthly (if escrowed): $499

Example 3: $1,000,000 Home

  • Assessed Value: $1,000,000
  • Less: Homestead Credit (if applied): -$6,500
  • Net Taxable Value: $993,500
  • Tax Rate (example): 3.2%
  • Annual Tax: $10,792
  • Monthly (if escrowed): $899

Note: The Homestead Credit shown ($6,500 taxable value reduction for assessment year 2024) requires a separate application and is not automatically applied. Additional credits may be available for seniors, veterans, or disabled persons but require individual applications. Tax rates vary by specific location within the county.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Poweshiek County require borrowers to maintain an escrow account for property taxes, especially when the down payment is less than 20%. Your lender collects 1/12th of your estimated annual property tax bill with each monthly mortgage payment, then pays your tax bills directly to the county when they become due.

Lenders typically pay your property taxes before the September 1st and March 31st due dates to avoid any late penalties. They receive tax bills directly from Poweshiek County and should provide you with copies. Your lender will conduct an annual escrow analysis to ensure adequate funds are being collected, which may result in escrow payment adjustments if your tax bill increases or decreases significantly.

If you pay your own property taxes without escrow, you're responsible for making payments by the due dates: September 1st for the first half and March 31st for the second half. Both halves become delinquent in October and April respectively if not paid on time, incurring penalty fees and potential interest charges.

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 Poweshiek County property taxes due? A: Property taxes are due September 1st for the first half and March 31st for the second half. The first half becomes delinquent in October, and the second half becomes delinquent in April.

Q: What tax credits are available and do they require applications? A: The primary credit is the Homestead Credit, which reduces taxable value by $6,500 for assessment year 2024. This credit REQUIRES APPLICATION and is not automatic. Additional credits may be available for seniors (65+), veterans, and disabled persons, all requiring separate applications through the County Assessor's office.

Q: How does the Homestead Credit work? A: The Homestead Credit limits assessment increases rather than reducing market value. It caps the annual increase in your homestead's taxable value and requires filing an application. You must be an Iowa resident and the property must be your primary residence. This is a tax credit that reduces your tax bill, not an exemption.

Q: How often are properties assessed in Poweshiek County? A: Iowa requires property assessments to be conducted annually, with the goal of maintaining assessments at fair market value. Assessment notices are typically mailed in the spring, and you have the right to appeal your assessment through a formal process.

Q: What are the penalties for late property tax payments? A: Late payments incur penalty fees and interest charges. Each half of your tax bill that isn't paid by its due date becomes delinquent, with penalties accruing monthly until paid in full.

Q: Can I pay my property taxes online? A: Check with the Poweshiek County Treasurer's office for current online payment options, as many Iowa counties now offer online payment systems for property taxes.

Q: Why do tax rates vary within Poweshiek County? A: Your tax rate depends on which combination of taxing districts serve your property, including school district, city (if applicable), rural services, and special assessment districts. Rural properties have different taxing districts than urban properties.

Q: What should I do if I disagree with my property assessment? A: You can appeal your assessment by contacting the Poweshiek County Assessor's office. There are formal appeal processes and deadlines, typically in the spring following assessment notices.

Q: Are there special considerations for agricultural property? A: Agricultural property may qualify for special agricultural valuations and credits. Contact the County Assessor's office to discuss agricultural property tax benefits, which typically require separate applications and documentation.

Q: How do I apply for available tax credits? A: Contact the Poweshiek County Assessor's office for application forms and deadlines. Most credits require annual or periodic reapplication and have specific eligibility requirements and documentation needs.

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