Verified July 2026 · By Oleg Kachko · Reviewed for accuracy against primary state and county sources
Polk County property tax costs the typical homeowner about $4,396 a year, on a median home value of $262,100 – an effective rate of about 1.57%. That is above the national average annual bill of $4,271. This page shows you where that number comes from, who actually sets it, the deadline to challenge it, and the exemptions you may be leaving on the table.
Polk County property tax at a Glance
- Effective property tax rate: 1.57%
- Median annual bill: $4,396
- Median home value: $262,100
- Who assesses your home: Polk County Assessor
- Appeal deadline: April 2 – April 30
On this page
Polk County property tax: the real numbers
Property tax is the most local tax there is. Two homes of the same value in different counties – sometimes in different towns of the same county – can carry very different bills, because the rate is the sum of every overlapping district that taxes you: the county, the town or city, the school district, and often fire, library or water districts on top. So the polk county property tax figure below is an average across the whole county – your own bill depends on which districts you sit inside.
| Figure | Polk County | National |
|---|---|---|
| Median annual property tax bill | $4,396 | $4,271 |
| Effective property tax rate | 1.57% | about 0.90% |
| Median home value | $262,100 | – |
Source: U.S. Census Bureau American Community Survey (5-year), the same dataset the Tax Foundation uses. The effective rate is total real-estate taxes paid divided by total owner-occupied home value – so it reflects what people actually pay, not the headline millage rate.
Who actually sets your polk county property tax value
Your assessed value is set by Polk County Assessor. That office does not set your tax rate – the county board, your city, and your school district each set their own, and your bill is the sum. So the assessor can only be argued with about one thing: what your home is worth. That is exactly what an appeal is.
How often your polk county property tax value is reassessed:
City/county assessors value property as of January 1 and reassess in odd-numbered years; a statewide ‘rollback’ (assessment limitation) then makes only part of a home’s assessed value taxable.
How to appeal your polk county property tax assessment
⚠ The deadline — miss it and you usually wait a full year
April 2 – April 30
Protest your assessment to the county Board of Review between April 2 and April 30 (an informal review with the assessor is available April 2-25). If denied, appeal to the state Property Assessment Appeal Board (PAAB) or district court. Confirm your county’s window.
Almost every polk county property tax appeal comes down to one claim: the assessor thinks my home is worth more than it really is. Everything below is about proving that.
Do this first, before you file anything: ask for your property record card and read it. A surprising share of assessments are simply wrong on the facts – the wrong square footage, a bathroom you do not have, a finished basement that is bare concrete, a garage that was torn down. Factual errors are the easiest appeals to win, because there is nothing to argue about.
Then build the one thing that actually wins appeals: comparable sales. Find three to five homes near you, as similar as you can get on size, age, and condition, that sold recently for less than your assessed value. Not listings – sales. Not Zillow estimates – recorded sales. Boards ignore opinions and respond to comps.
A successful polk county property tax appeal does not change your tax rate – it lowers the value the rate is applied to, which lowers the bill for as long as the new value stands.
Appeals are heard by the County Board of Review (then the Property Assessment Appeal Board or district court). In most places there is a free, informal step first – a conversation or a paper review with the assessor – and it resolves a large share of cases without a hearing. Take it. It costs you nothing and it is the fastest way to win.
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One honest warning: an appeal reviews your value, and a review can go up as well as down. That is uncommon when you bring real comparable sales, and it is exactly why you check your comps before you file.
Where to go: find your office through Iowa Dept of Revenue, which lists the assessing office for every county in Iowa.
Polk County property tax exemptions you may qualify for
This is where most homeowners quietly overpay their polk county property tax. Exemptions are almost never applied automatically – you have to claim them, and many people simply never do. It is worth ten minutes of your time to check.
HOMESTEAD: The new homestead exemption is a set amount of taxable value (minimum $5,500, maximum $20,000, indexed from 2027) starting with the 2026 assessment year; the older credit applied to the first $4,850 of taxable value. Confirm the current figure with your county assessor. | SENIOR: The 65+ exemption is $6,500 of taxable value (assessment year 2024 and later). The Elderly/Disabled credit is income-based. Apply by July 1; confirm current figures with your county assessor/treasurer. | VETERAN: Disabled-veteran credit = 100% of homestead property tax.
Military Service exemption = $4,000 of taxable value. Confirm current figures with your county assessor. | DISABILITY: Income-based credit; confirm the current income limit with your county treasurer.
Homestead: Iowa is shifting from a Homestead Tax Credit to a Homestead Exemption that reduces the taxable value of an owner-occupied primary residence (a recent law change). Apply once with the city/county assessor by July 1; it renews automatically.
Senior / over-65: Additional Homestead Exemption for claimants 65+ (on top of the regular homestead), plus an income-based Elderly and Disabled Property Tax Credit for lower-income owners 65+ or disabled.
Veteran: Disabled Veteran Homestead Tax Credit – covers 100% of the homestead property tax for a veteran with a 100% service-connected permanent-and-total disability (or 100%-rated individual unemployability) and eligible surviving spouses. A separate Military Service Tax Exemption reduces taxable value for veterans generally. Apply with the assessor by July 1.
Disability: The income-based Elderly and Disabled Property Tax Credit is available to totally disabled homeowners (any age) who meet the income limit; filed with the county treasurer.
Common questions about polk county property tax
Why did my polk county property tax bill go up when I did nothing to the house?
Two different things can raise a bill: your assessed value went up, or a taxing district raised its rate. They are separate, and only the first one can be appealed. Your notice will show which changed.
Is it worth appealing my polk county property tax?
Ask one question: would a similar home near mine sell for less than the value the assessor has put on mine? If yes, you have a case, it is usually free to file, and in many places the informal review settles it without a hearing.
Do I need to hire someone to appeal?
No. The informal review and the local board are built for ordinary homeowners to use themselves, and there is normally no fee. Appeal services exist and can be worth it for some people, but you are not required to use one and you should never be told you are.
How is my polk county property tax bill actually calculated?
Your assessed value is multiplied by the combined rate of every district that taxes you, then any exemptions you have claimed are subtracted. That is why two neighbours can pay different amounts on identical homes – one of them claimed an exemption the other never did.
More on Iowa property tax
- Iowa property tax rates — how Polk County compares with every other county in the state.
- How to win your Iowa property tax appeal — the evidence that works and what to say at the hearing.
- Iowa property tax exemptions — who qualifies, how much each one saves, and how to apply.
- Iowa property tax due dates — when the bill is due and what happens if you are late.
- Property tax by state — every state, side by side.
The bottom line on polk county property tax
Do two things this week. First, pull your property record card and check the facts – square footage, rooms, condition. Second, check whether you are claiming every exemption you are entitled to, because most people are not. If your polk county property tax value looks higher than what a similar home nearby would actually sell for, you have grounds to appeal – and the only thing that can stop you is the deadline above.
Where our polk county property tax figures come from
- U.S. Census Bureau, American Community Survey — the rate, median bill and median value on this page.
- Tax Foundation, Property Taxes by State and County — the same dataset and method.
- Iowa Dept of Revenue — the office that can confirm your value, your exemptions and your deadline.
- Iowa Dept of Revenue (revenue.iowa.gov); Iowa Code chs. 425, 426A, 441
Informational only. Know Property Tax is not a government agency, not a county assessor, and not a tax-appeal service, and this is not legal, tax, or financial advice. Property tax rates, median bills, exemption amounts, and deadlines change every year, and every property is different. Any figure shown here is illustrative. Confirm your rate, your exemptions, and above all your appeal deadline with the office named on this page before you act.
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