Polk Property Tax: Deadlines & How to Appeal (2026)

For 2026 Polk County assessments, the regular protest window was April 2 through April 30, 2026; April 30, 2026 was a Thursday, so there was no weekend extension. The next regular residential assessment protest deadline is April 30, 2027, filed with the Polk County Board of Review through the Polk County Assessor’s Office at 111 Court Ave., Room 195, Des Moines, by email, fax, mail, or in person—not through the state PAAB eFile portal. (polkcountyiowa.gov)

How assessments work in Polk County

Polk County’s assessor is responsible for valuing taxable real property in the county, including residential, multi-residential, commercial, industrial, and agricultural property. The county assessor page says real property is revalued every two years, and Iowa’s assessment date is January 1 of the assessment year; new construction or improvements are valued based on their state of completion on January 1. (polkcountyiowa.gov)

That timing matters. A 2026 protest is about the property’s value as of January 1, 2026, not what happened after you received the notice. Iowa’s statewide cycle is: assessments are completed and notices sent by April 1, informal review is April 2–25, Board of Review protests are April 2–30, and local boards consider protests May 1–31 unless the Department of Revenue extends the session to July 15. (revenue.iowa.gov)

Polk County’s 2025 revaluation is useful context for 2026 owners. The assessor’s April 2025 RealTalk reported average 2025 assessed-value changes of +9.9% residential, +11.7% commercial, +7.9% multi-residential/residential 3+, +0.7% industrial, and +26.7% agricultural. It also noted that residential property must be assessed at 100% of value, with some flexibility, and that 2024 sales were used to set 2025 assessments. (web.assess.co.polk.ia.us)

Your assessed value is not your tax bill. Iowa taxes are based on taxable value, levy rates, and credits/exemptions. The county auditor receives assessed values, applies state rollbacks, applies local levy rates, and sends the resulting taxes to the treasurer for collection. The Department of Revenue explains that consolidated levy rates are dollars per $1,000 of taxable value. (polkcountyiowa.gov)

Whether you should appeal

Appeal if you can point to a concrete reason the January 1 value is wrong. Polk’s petition form uses the Iowa statutory grounds: inequity compared with similar property in the taxing district; assessed for more than value authorized by law; exempt, not assessable, or misclassified; error; or fraud/misconduct. For most homeowners, the strongest evidence is a recent arm’s-length sale, a professional appraisal near January 1, incorrect property data, or comparable sales that support a lower value. (assess.co.polk.ia.us)

Start with the Assessor’s property search. Verify living area, finished basement, garage, condition, year built, additions, and classification. Then compare your home to recent sales—not just active listings—and to similar assessed homes in the same tax district. Polk’s 2025 FAQ specifically points owners to the Assessor’s website tools for gathering evidence. (assess.co.polk.ia.us)

Do not appeal simply because taxes are high. The Board of Review is deciding assessment value or classification, not the city, school, county, hospital, community college, or DART levies that make up the bill. Also, if you bought the house for more than the assessment or your best comps support the assessor’s value, an appeal may not help.

Published Polk County results show appeals can work, but reductions are not automatic. In the 2024 Board of Review report, 558 protests were filed; 260 were upheld and 298 denied, and Polk reported a total net assessment decrease of $73,769,660. For residential property “within incorporated cities,” 185 of 296 protests were upheld. Polk defines “upheld” as even a partial reduction, and it does not publish a median homeowner reduction in that report. In the 2023 revaluation year, Polk reported 6,731 protests, with 39.7% upheld and 60.3% denied. (web.assess.co.polk.ia.us)

Step-by-step how to file

1. Try informal review first, if the window is open. For 2026, informal review ran April 2–25. If you reach a signed written agreement with the assessor by April 25, you may avoid filing a Board of Review protest. (polkcountyiowa.gov)

2. Use the exact form. The Polk form is “PETITION TO THE BOARD OF REVIEW.” It is addressed to the Polk County Board of Review at 111 Court Avenue, Room 195, Polk County Administrative Office Building, Des Moines, Iowa 50309 and includes a checkbox to request an oral hearing. (assess.co.polk.ia.us)

3. File by the deadline. The form says it must be filed, faxed, mailed, or emailed from April 2 through and including April 30 and must be postmarked no later than April 30. For 2026, that means the deadline was April 30, 2026. If April 30 falls on a weekend in a future year, Polk says the deadline extends to the following business day. (polkcountyiowa.gov)

4. Send it the right way. Polk lists these local filing methods: email protest@assess.co.polk.ia.us; fax 515-286-3386; U.S. mail or in-person delivery to Polk County Assessor, 111 Court Ave., Room 195, Des Moines, IA 50309. PAAB’s eFile portal cannot be used to file the original local Board of Review protest. (polkcountyiowa.gov)

5. Attach evidence. Put your requested value on the form and attach a short explanation, comps, closing statement, appraisal, photos, repair estimates, or screenshots of incorrect assessor data. Keep a complete copy and proof of timely filing. Polk’s protest form and appeal instructions do not list a county filing fee.

What happens after

The appeal authority is the Polk County Board of Review. Polk’s annual report describes it as an independent board of 10 private citizens appointed by the Conference Board. The Board considers evidence from the property owner and the Assessor’s Office at a hearing, then issues a decision on the property’s value. (web.assess.co.polk.ia.us)

If you requested an oral hearing on the petition, expect a scheduled hearing notice. If you did not, the Board can consider the written protest and evidence without you speaking. In practice, your presentation should be short: what the assessor says, what you say the January 1 value should be, and the evidence that bridges the gap.

The Board normally meets in May. Iowa’s cycle says local boards consider protests May 1–31, with possible extension to July 15 by the Department of Revenue Director. After the Board adjourns, if you disagree, you may appeal either to the Iowa Property Assessment Appeal Board (PAAB) or directly to district court. For regular-session PAAB appeals, if the Board adjourns on or before May 31, the PAAB deadline is June 20; if it adjourns later, the deadline is 20 calendar days after adjournment. PAAB says there is no cost to file a PAAB appeal and that PAAB does not accept appeals by email or fax. (revenue.iowa.gov)

Local tips

Check exemptions before you fight value. Polk highlights the homestead credit/exemption, the 65+ homestead exemption, military exemption, disabled veteran credit, and senior/disabled property tax credit programs. The homestead and 65+ filing deadline is July 1; Polk accepts those applications in person, by mail, email to credits@assess.co.polk.ia.us, or fax. For assessment years beginning on or after January 1, 2024, the 65+ exemption is $6,500 of taxable value. In 2026, Iowa also replaced the homestead tax credit with a homestead exemption equal to 10% of taxable value, with a minimum $5,500 and maximum $20,000 taxable-value exemption, effective for assessment year 2026 taxes payable in September 2027 and March 2028. (polkcountyiowa.gov)

For savings math, use your own tax district rate from the Polk Auditor’s consolidated-rate table. As a countywide reality check, the Iowa Legislative Services Agency’s FY2026 map lists Polk’s average consolidated rate at $37.81 per $1,000 of taxable value. If a homeowner wins a $20,000 assessed-value reduction, and we use the currently published residential rollback example of 44.5345% for FY2026 bills, taxable value falls about $8,907. At $37.81 per $1,000, that is about $337 per year in gross tax savings before any district-specific differences or exemption changes. Future bills from a 2026 assessment will use the levy rates and Iowa rules in effect for taxes payable September 2027 and March 2028, so treat this as an estimate, not a guarantee. (legis.iowa.gov)

Polk County Property Tax Rate

Polk County does not have one countywide homeowner millage; Iowa uses consolidated levy rates that vary by tax district, and the Polk County Auditor publishes current FY2026/2027 Polk County consolidated rates by district. Iowa property tax rates are expressed as dollars per $1,000 of taxable value.

Source: https://www.polkcountyiowa.gov/county-auditor/property-tax/tax-rate-and-valuation-information/

When Are Property Taxes Due in Polk County?

Real estate property taxes are payable in two installments: the 1st installment is due September 1 and becomes delinquent October 1; the 2nd installment is due March 1 and becomes delinquent April 1. Polk County also states the 1st installment is due by September 30 and the 2nd installment is due by March 31 to avoid 1.5% interest beginning October 1 and April 1, respectively. Property tax payments can be paid in one full installment or two half installments. Partial payments are accepted for current or delinquent real estate and mobile home property tax if the partial payment is greater than the late interest and costs due; partial payments are not accepted for special assessments or tax-sale redemption payments.

This is not the same as the assessment appeal deadline above. The appeal deadline is your window to contest your assessed value; the payment due date is when the resulting tax bill must be paid. Missing one does not affect the other, but missing either has real consequences — one forfeits your right to appeal for the year, the other can trigger penalties and interest.

Source: https://www.polkcountyiowa.gov/treasurer/property-tax/property-tax-faqs/

Property Tax Exemptions in Polk County

• Iowa Homestead Tax Exemption — Owners who own and occupy the property as a homestead, declare Iowa residency for income tax purposes, and occupy the property for at least six months each year; military and nursing-home exceptions may apply.. For assessment year 2026, the former homestead tax credit is replaced by an exemption equal to 10% of the taxable value of the homestead, with a minimum taxable-value exemption of $5,500 and a maximum of $20,000; this applies to taxes paid September 2027 and March 2028. Yes for new claimants; claimants who received the homestead credit or exemption before July 1, 2026 are automatically awarded the 10% exemption if they continue to qualify. Apply by July 1. (Source: https://revenue.iowa.gov/taxes/tax-guidance/property-tax/homestead-tax-credit-and-exemption)
• Additional Homestead Exemption for Claimants Age 65+ — Eligible homestead claimants who are 65 or older on or before January 1 of the assessment year.. Additional exemption of $6,500 of taxable value. Yes, one-time application if granted and the claimant continues to qualify. Apply by July 1. (Source: https://www.polkcountyiowa.gov/county-assessor/assessor-news/homestead-credit-and-exemption-65plus/)
• Senior and Disabled Property Tax Credit — For 2026 Polk County claims: Iowa residents with total household income less than $26,895 who are age 65 to 69 by December 31, 2025, or totally disabled and age 18 or older by December 31, 2025, and who were the recorded property owner or contract buyer by June 30, 2025. Polk County also lists an age-70+ version for claimants meeting the 70+ household income guidelines.. Maximum credit or reimbursement is $1,000. Yes, file annually to receive the maximum benefit. Apply by June 1; file with the Polk County Treasurer between January 1 and June 1.. (Source: https://www.polkcountyiowa.gov/treasurer/property-tax/property-tax-relief/)
• Disabled Veteran Homestead Property Tax Credit — Applicants who qualify for the Iowa homestead exemption and are a qualifying disabled veteran, surviving spouse, or child as described by Iowa law; qualifying veterans include those with permanent 100% service-connected disability or permanent and total individual-unemployability ratings paid at the 100% rate, as certified by the U.S. Department of Veterans Affairs.. Credit equal to the entire amount of tax levied on the qualifying homestead, subject to applicable homestead limitations. Yes, one-time application; annual reapplication is not required, but the assessor must be notified if the claimant no longer qualifies. Apply by July 1. (Source: https://revenue.iowa.gov/taxes/tax-guidance/tax-credits-deductions-exemption/disabled-veteran-homestead-property-tax-credit)
• Iowa Military Service Property Tax Exemption — Qualified military veterans who own the property on July 1 of the claim year.. Reduces the taxable value of property; the amount of exemption varies. Yes, initial claim with the local assessor; subsequent claims need not be filed on the same property if eligibility continues. Apply by July 1. (Source: https://revenue.iowa.gov/taxes/tax-guidance/tax-credits-deductions-exemption/tax-credits-and-exemptions)
• Mobile/Manufactured/Modular Home Reduced Tax Rate — For the 2026 Polk County program: Iowa resident, titled owner of the mobile home, age 23 or older as of December 31, 2025, with 2024 household income less than $26,895.. Reduced tax rate for qualifying mobile/manufactured/modular home owners; the Polk County source does not state a fixed dollar benefit. Yes, annually to receive the maximum benefit. Apply by June 1; file with the Polk County Treasurer between January 1 and June 1.. (Source: https://www.polkcountyiowa.gov/treasurer/property-tax/property-tax-relief/)

How to Look Up Your Property Record in Polk County

You can look up your property's official record at https://co.polk.ia.us/. The official Polk County Assessor property search allows searches by property address, owner name, legal/plat information, and district/parcel or geoparcel number; parcel records can be used to verify assessment and exemption information.