Estimate Your Property Tax

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Estimate Your Property Tax 
Important Points About Property Taxes
Rollback Percentages and Levies/Tax Rates (Current and Historical)


Estimate Your Property Tax

  • The Story County Treasurer has provided this tool to help you estimate your property tax:

Property Tax Estimator Button 

  • You can also use the following formula to estimate your property taxes for residential property, but remember, this is only an estimate. 
x 0.550743
$  55,074
Assessed Value (Market Value)
x  Rollback percentage
Taxable or Taxed Value
Most Recent Rollback Percentages
55.0743% for residential real estate 
$  55,074
-(Military Credit)
$  55,074
Taxable Value
Less $ for Military Credit (if applicable)
Net Taxable Value 
See Credits & Exemptions for
Military Credit qualifications 
$  55,074
x 0.03152
$    1,736
Net Taxable Value
x  Tax Rate
Most Recent Levy/Tax Rates
• $31.52258 Ames/Ames schools
• $36.05395 Ames/Gilbert schools 

$    1,736
- (Homestead Credit)
$    1,736

Less Homestead Credit
Taxes Owed

Homestead Tax Credit
• The amount varies each year
• Depends on state funding



Important Points About Property Taxes

  • Assessed values are based on calendar years - as of January 1.
  • Taxes are calculated by the Story County Auditor for fiscal years, July 1 through June 30 using the previous year assessment.
  • Property taxes are payable to the Story County Treasurer in two installments.
    • The first half is delinquent October 1.
    • The second half payment is delinquent April 1.
    • Contact the County Treasurer for more details (515-382-7330).
  • Taxes payable in the fall of 2019 and spring of 2020 will be based on the 2018 assessed value.
  • A house built during 2019 will be first assessed for January 1, 2020.
  • The assessed values for January 2020 will be the basis for taxes due in the fall of 2021 and spring 2022.
  • For more information about property taxes in Iowa, please visit the Iowa Department of Revenue's Web site at


Rollback Percentages and Levies/Tax Rates (Current and Historical)



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