The Vote on September 8 Will Move Your Ankeny Property Tax Bill More Than Your Assessment Did

Did your property taxes go up 12.64 percent this year, or 2.4 percent? If you own a home in Ankeny and opened your March mailer from the Polk County Auditor, you got the first number. If you waited for your actual bill, you got the second. Both are technically true, and the gap between them is the whole story of how property taxes work here right now. It is also why a ballot question most homeowners have never heard of, set for September 8, will do more to your next tax bill than anything the assessor writes down.

If you are buying or selling in Ankeny this fall, or you are already under contract, this is the math that actually applies to you.

The Number on Your Statement Was Never the Real Number

Ankeny's own property tax page says it plainly: the mailed taxpayer statement showed a 12.64 percent increase for residential property and 13.98 percent for commercial, but the actual increase homeowners paid came out to 2.4 percent and 0.79 percent. That is not a typo and it is not the city softening bad news. It is Iowa's rollback provision doing what it was built to do.

The rollback caps how fast statewide taxable value can grow to 3 percent a year, no matter how much assessed values jump. Your home's assessed value can climb double digits in a reassessment year, but the taxable value that your bill is actually calculated from moves much slower. Assessment notices go out every March, and every March, a fresh batch of homeowners assumes their bill is about to jump by whatever percentage is printed at the top. It usually does not, and that confusion shows up constantly at the closing table when a buyer pulls last year's statement and tries to project this year's payment from it.

Why Ankeny's Tax Bill Looks Different Than Its Neighbors

Here is the part that actually explains why Ankeny behaves differently than Urbandale or Des Moines on this. Ankeny levies its city property tax at $9.90 per $1,000 of taxable valuation for fiscal year 2026, the lowest rate of any city with 5,000 or more residents in the Des Moines metro. That sounds like good news, and it is, but it comes with a trade.

Ankeny is one of only five cities in Iowa that has never adopted a local option sales tax, according to a recent report from WHO 13. City Manager Mike Schrock put the tradeoff directly: residents spend money all over the metro, and every time they do, they are paying sales tax into someone else's property tax relief fund instead of their own. As Schrock said, that spending "is helping fund their property tax relief, it's helping fund their special projects that they might be identifying to use with this revenue source."

That is the mechanism behind Ankeny's low property tax rate. It has not been a lack of spending, it has been a missing revenue tool, and the city has now put a fix on the ballot.

What September 8 Actually Changes

Ankeny voters will decide a special election on September 8, 2026 on whether to add a 1 percent local option sales tax, moving the city's rate from 6 percent to 7 percent, effective January 1, 2027 if approved. The Polk County Auditor's office confirms half the new revenue is earmarked for capital projects such as street, park, and trail improvements, public infrastructure, and public safety equipment, or for debt retirement.

The property tax consequence is not theoretical. City leaders have said publicly what each outcome does to the average bill.

Absentee ballots can be requested through August 24, early voting runs August 19 through September 4 at the Polk County Elections Office on Euclid Avenue (closed Labor Day), and the vote itself happens September 8. If you are listing a home in Ankeny between now and then, or writing an offer, this is a date worth knowing before you finalize a monthly payment estimate for a client.

The Bigger Reform Already Signed Into Law

The ballot question is not the only thing rewriting Ankeny tax math this year. On May 18, 2026, Governor Reynolds signed Senate File 2472, described by Ahlers & Cooney as one of the most significant overhauls of Iowa's property tax system in decades. Two pieces matter directly to anyone buying or selling here.

First, the homestead credit is gone. In its place, the Iowa Department of Revenue confirms every eligible homestead now gets an exemption equal to 10 percent of taxable value, with a floor of $5,500 and a ceiling of $20,000. It is retroactive to assessment year 2026, which means it will show up on taxes paid in September 2027 and March 2028. Anyone who already had the credit before July 1, 2026 rolls into the new exemption automatically, no new filing required.

Second, cities and counties now face a 2 percent annual growth cap on most levies, applying to fiscal years that begin on or after July 1, 2027. That cap is separate from the rollback and limits how much local governments can raise in total collections year over year, which puts a ceiling on how much a future Ankeny council could lean on property taxes even if the September sales tax vote fails.

There is also a new FirstHome Iowa savings program for first-time buyers, letting Iowans set aside up to $5,500 a year per beneficiary in a tax-advantaged account earmarked for a down payment or closing costs, with contributions deductible from state income tax. If you are early in saving for a first home in Ankeny, that account is worth setting up before your next lease renewal, not after.

What This Means If You're Closing on a Home Right Now

1. Pull the seller's actual prior-year tax bill, not the March statement. The mailed number reflects a proposed budget before the rollback is applied, and it is almost always higher than what gets paid.
2. Check which ZIP code the home sits in. Ownwell's Polk County data shows Ankeny's median annual tax bill runs from $4,689 in 50021 to $5,232 in 50023, a spread driven by overlapping school district and special assessment boundaries, not by home price alone.
3. If you are budgeting a mortgage payment that closes after January 1, 2027, factor in the possibility of the new local option sales tax and a lower property tax line, or the alternative if the vote fails.
4. Ask whether the seller has the new homestead exemption applied. It transfers automatically for continuing eligible homeowners, but a new buyer will need to file for it under the current homestead rules once they move in.
5. Use the state's own Citizen Property Tax Estimation Tool rather than a generic online calculator. It is the same tool the city points residents to for a real current and proposed estimate.

None of this changes what a home is worth. It changes what owning it costs month to month, and that is exactly the number buyers ask about at the kitchen table.

A Few Questions Worth Answering Directly

Does the September 8 vote affect the tax bill I already received this year? No. This year's bill is already set under the current rate structure. The vote determines the city's revenue mix and property tax trajectory going forward, not the bill you already received.

If I'm closing on a house before September 8, should I wait? There is no reason to delay a purchase over this. The vote affects future budgets, not the taxes already assessed on the home you are buying today.

Where can I see how a specific address is taxed right now? The Polk County Assessor's office and the state's Citizen Property Tax Estimation Tool, linked above, both let you enter an address and see the current assessed value, taxable value, and levy breakdown for that parcel.

Property tax math in Ankeny has never been simple, and this year it involves a state law that just took effect, a rollback most people misread every March, and a vote next month that the city itself says will move the average bill up or down. If you are trying to figure out what a specific address will actually cost you to own, that is exactly the kind of question worth asking someone who tracks this locally rather than guessing from a mailer. Laura Major works with buyers and sellers across Ankeny and Central Iowa every day, and walking through the real numbers on a specific home is part of the job. Let's Connect.