How to Appeal Your Property Taxes in Utah County in 2026

The deadline to appeal your Utah County property tax valuation is September 15, 2026, and if that assessment notice made you raise an eyebrow, here is exactly how to challenge it.

When Can You File in Utah County

Utah County's Board of Equalization accepts appeals for any reason through September 15, 2026. If you miss that date, a late appeal window exists through March 31 of the following year, but a late appeal requires meeting additional criteria and must be formally accepted by the board before it will even be reviewed, so September 15 is the date to circle.

How Do You Submit an Appeal

Utah County accepts appeals electronically through its online appeal system, by email, by U.S. mail, or in person. Online or email submissions must be received by 11:59:59pm on the deadline date. Mailed appeals must be postmarked by the deadline. In-person submissions must reach the Tax Administration office before 5pm.

What Counts as Strong Evidence

Utah County wants credible, documented comparable sales, generally three to five properties similar to yours that sold within about a year of the January 1 valuation date. A recent purchase or refinance closing statement on your own home is also strong evidence, since it reflects an actual arm's length transaction. Photos of deferred maintenance or condition issues, and repair estimates, can support an appeal based on your home's actual condition versus how the county assessed it.

Utah County vs Salt Lake County Appeals

Both counties follow the same statewide statutory deadline of September 15, 2026. Utah County's filing window opens in late July, while Salt Lake County's opens August 1, 2026. Both accept appeals online, by email, by mail, or in person, and both offer a similar late appeal window through March 31 under specific criteria.

What Happens After You File

The Board of Equalization schedules an informal hearing, typically in September or October, where you present your evidence in 10 to 20 minutes and the county assessor's representative presents theirs. The board weighs both sides and issues a decision. If you disagree with the outcome, you can appeal further to the Utah State Tax Commission.

Is It Worth the Effort for a Modest Home

Even a modest reduction matters over time. Utah's average effective property tax rate after the primary residential exemption sits around 0.55 percent, so a $40,000 reduction in assessed value saves roughly $110 to $130 a year, which adds up over the years you own the home, especially in a fast-appreciating area like Lehi or Eagle Mountain where assessments have climbed quickly.

As someone who pulls comparable sales data for Utah County listings every week, I know exactly what documentation actually moves the needle with the Board of Equalization. If your notice landed and something felt off, I am glad to help you build your case before September 15.

Frequently Asked Questions

When is the Utah County property tax appeal deadline for 2026?

September 15, 2026. A late appeal window exists through March 31 of the following year, but requires meeting additional acceptance criteria.

How do I file a Utah County property tax appeal?

Online through the county's appeal system, by email, by mail postmarked by the deadline, or in person before 5pm at the Tax Administration office.

What evidence does Utah County want for an appeal?

Three to five comparable sales within about a year of January 1, a recent purchase or refinance closing statement, or documented evidence of condition issues affecting value.

Is Utah County's deadline different from Salt Lake County's?

No, both counties follow the same statewide statutory deadline of September 15, though filing windows open slightly differently.

How much can a successful appeal actually save me?

At Utah's roughly 0.55 percent effective rate, a $40,000 reduction in assessed value saves approximately $110 to $130 a year, which compounds over your ownership period.

If you want help pulling the right comparable sales for your Utah County property tax appeal before September 15, I would be glad to help. Call or text me at 801-636-3609.

If you want to find out or read more, click here./blog/what-does-it-cost-to-sell-a-house-in-utah-2026