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Updated 2025 Tax Year

Allamakee County
Property Tax Guide

Everything you need to know about property taxes in Allamakee 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% base rate, varies by taxing districts (county, school, city, special districts)
Exemptions
5+ Available
Section 1

How Property Tax Works

Property taxes in Allamakee County, Iowa, fund essential local services including schools, roads, emergency services, and county government operations. The Allamakee County Assessor's Office is responsible for assessing all taxable property at 100% of its actual market value as of January 1st each year, per Iowa Code Chapter 441.21. Property tax rates in Iowa average around 1% statewide, though actual rates vary significantly based on your specific location within the county.

Your actual property tax rate depends on the combination of taxing districts where your property is located, including the county, school district, city (if applicable), and any special districts for services like fire protection, library, or emergency services. The 2025 property tax rates for Allamakee County are expected to increase by approximately 10% compared to the previous year, with final rates determined by the county board of supervisors during the annual budget process.

Section 2

What Makes Up Your Tax Bill

ComponentEstimated Rate (per $1,000)Description
County General Basic$3.50-4.50Core county services, administration
County General Supplemental$0.50-1.50Additional county operations
County Rural Basic$3.00-4.00Rural services (applies to unincorporated areas)
School District$12.00-16.00Local school district operations and facilities
City/Municipality$8.00-15.00City services (varies by city, if applicable)
Special Districts$0.50-3.00Fire, ambulance, library, drainage districts

Rates shown are estimates for levy year 2025 and vary significantly by location within Allamakee County. Contact the County Auditor's Office for exact rates applicable to your property's specific taxing districts.

Section 3

When Are Property Taxes Due?

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

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 Allamakee County are additional assessments that may occur during the tax year when property changes ownership, new construction is completed, or property improvements are added after the January 1st assessment date. These taxes are calculated based on the difference between the new assessed value and the previous assessment, prorated for the portion of the tax year remaining.

For example, if you complete a $50,000 home addition in June and your total tax rate is $35 per $1,000 of assessed value, you would owe a supplemental tax of approximately $875 ($50,000 ÷ 1,000 × $35 = $1,750 annual increase ÷ 2 for half-year = $875). Supplemental tax bills are typically issued within 30-60 days of the assessment change and become part of your ongoing property tax obligation.

Example Calculation

Example 1: $300,000 Home with Homestead Credit

  • Assessed Value: $300,000
  • Homestead Credit Applied: Caps assessment increase at 3% annually
  • Net Taxable Value: $300,000
  • Tax Rate: $32.00 per $1,000 (example combined rate)
  • Annual Tax: $9,600
  • Monthly Escrow: $800

Example 2: $600,000 Home with Homestead Credit

  • Assessed Value: $600,000
  • Homestead Credit Applied: Assessment increase limitation
  • Net Taxable Value: $600,000
  • Tax Rate: $34.00 per $1,000
  • Annual Tax: $20,400
  • Monthly Escrow: $1,700

Example 3: $1,000,000 Commercial Property

  • Assessed Value: $1,000,000
  • Credits Applied: None (commercial property)
  • Net Taxable Value: $1,000,000
  • Tax Rate: $38.00 per $1,000
  • Annual Tax: $38,000
  • Monthly Escrow: $3,167

Note: All tax credits require separate application and are not automatic. Rates vary by specific taxing districts.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Allamakee County require borrowers to maintain an escrow account for property taxes. Your lender collects approximately 1/12th of your annual property tax bill with each monthly mortgage payment and pays your taxes directly when due. Property taxes are paid in two installments: the first half is due September 1st and the second half is due March 1st of the following year.

Your lender will receive a copy of your tax statement and should pay on time to avoid penalties. However, property owners remain ultimately responsible for ensuring taxes are paid even when using escrow. Review your annual escrow analysis statement to verify adequate funds are being collected, and contact your lender immediately if you receive any delinquency notices. You can verify payments were made by checking with the Allamakee County Treasurer's Office or through their online payment portal.

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 Allamakee County? A: 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 Credit and how do I apply? A: The Homestead Credit limits annual assessment increases on your primary residence and provides tax relief. You must be an Iowa resident and the property must be your principal residence. Applications are typically due July 1st. Contact the County Assessor's Office for current application forms - this credit is NOT automatic.

Q: Are there property tax credits for seniors or disabled veterans? A: Yes, Iowa offers additional credits for qualifying seniors (65+) and disabled veterans. These require separate applications with specific eligibility requirements and documentation. Contact the Assessor's Office at least 60 days before the application deadline.

Q: How often are properties reassessed in Allamakee County? A: All properties are assessed annually as of January 1st. However, the Assessor may conduct physical inspections on a rotating cycle or when triggered by sales, permits, or other property changes.

Q: Can I appeal my property assessment? A: Yes, you can protest your assessment to the Board of Review. Protests must typically be filed by September 1st following the assessment. Contact the Assessor's Office for specific procedures and deadlines.

Q: What happens if I pay my property taxes late? A: Delinquent taxes accrue interest and penalties. First half taxes become delinquent October 1st, and second half become delinquent April 1st. Extended delinquency can result in tax lien sales.

Q: Can I pay my property taxes online? A: Check with the Allamakee County Treasurer's Office for current online payment options. Many Iowa counties offer online payment systems, though convenience fees may apply.

Q: How do special taxing districts affect my tax bill? A: Your property may be located in multiple taxing districts (school, fire, library, drainage, etc.), each with separate levy rates. Your total tax rate is the sum of all applicable district rates, which is why rates vary significantly by location within the county.

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