Utah County's 2026 appeal window is open until September 15
Utah County mails its Notice of Property Valuation and Tax Changes by July 22, and the Board of Equalization accepts appeals through September 15, 2026.
That makes this one of the rare moments when reading a guide can still change this year's tax bill. You have until mid September to act on the notice sitting in your mailbox, and the county's online system means filing does not require a trip to Provo.
Provo and Orem homeowners saw the highest sale prices on the Wasatch Front in 2025, with the median single-family sale around $590,000, up 4.4 percent year over year. When values move that fast, the assessor's mass appraisal can overshoot on individual homes.
This guide covers the deadline, the evidence the county wants attached to your appeal, and the late appeal option that makes Utah County unusual.
When is the deadline to appeal in Utah County?
Utah law sets the deadline as the later of September 15 or 45 days after the county auditor mails your valuation notice. Since notices go out by July 22, September 15, 2026 is the deadline for nearly everyone. If your notice is mailed late, count 45 days from the mailing date, and whichever date is later controls.
Online and email appeals are accepted until 11:59:59 PM on September 15. Mailed appeals count by postmark, and in person filings are due by 5 PM at 111 S University Ave in Provo.
Do not cut it close if you plan to mail. The postmark controls, but a lost or delayed envelope is a headache you can avoid by filing online.
Utah County also has the most generous fallback of the four big Wasatch Front counties: a late appeal window that runs until March 31. More on that below.
How does the Utah County appeal process work?
Appeals go to the Utah County Board of Equalization and are administered by the Auditor's Tax Administration office. Questions go to 801-851-8110, option 3, or BOE@utahcounty.gov.
- Check the market value on your valuation notice when it arrives in late July.
- File through the online appeal system at boe.utahcounty.gov, by email, by mail, or in person by September 15, 2026.
- Include your parcel number, the assessed value, your contact information, and documentation supporting the value you are requesting.
- The county reviews your evidence. Adjustments are made for credible documentation specific to your property.
- The Board of Equalization must decide within 60 days of your application.
- If you disagree with the decision, you have 30 days to appeal to the Utah State Tax Commission on form TC-194, filed with the county auditor.
What evidence do you need?
Utah County expects documentation with your application, not after. The standard the county applies is credible documentation specific to the property, so generic complaints about taxes being high will not move the number.
Comparable sales carry the most weight because they show what buyers were actually paying around January 1, 2026. Aim for homes of similar size, age, style, and location, and pay attention to sale dates, since the board is valuing your home as of January 1.
The evidence that works:
- Comparable sales of similar nearby homes, as close to the January 1, 2026 valuation date as possible.
- A recent appraisal of your property.
- Your closing documents, if you bought the home near the valuation date.
What if you miss September 15? The late appeal window
Utah County stands out here: it accepts late appeals until March 31 of the following year if you meet the county's criteria and the Board of Equalization accepts your petition.
A late appeal is not guaranteed. You will need to explain why you missed the regular window, and acceptance is up to the board.
If you do end up filing late, include the same evidence you would have filed in September. The board still needs credible documentation specific to your property before it will change a value.
Treat March 31 as a safety net, not a plan. Filing by September 15 keeps you in the standard process with no petition to argue. One more note: if someone files on your behalf, Utah County requires a signed Owner Authorization form.
Why can your tax rise even when rates fall?
Primary residences in Utah are taxed on 55 percent of market value thanks to a 45 percent exemption. A home valued at $473,200, the county median, is taxed on about $260,260, and a 10 percent cut in market value trims the bill by about 10 percent. Make sure the exemption appears on your notice, because a primary residence taxed on full value is its own fixable problem.
Utah's Truth-in-Taxation law adds a twist. The certified tax rate floats down as total values rise so each taxing entity collects the same revenue, and any increase above that rate requires an August public hearing. In the 2025 to 2026 cycle, 59 entities proposed increases with a median proposed hike of 8.31 percent.
The system balances the total, not your share. If your home is over-assessed relative to your neighbors, the burden shifts onto you even when rates drop. An appeal is how you push your share back in line.
How much money is at stake, and is it worth it?
The median Utah County home is valued around $473,200 with a median bill of $2,356, an effective rate of about 0.50 percent, the lowest of the four big Wasatch Front counties. A 10 percent reduction saves roughly $236 per year on the median home.
Sale prices run higher than that median. On a $590,000 home with a bill near $2,938, a 10 percent reduction is worth about $294 per year.
The lower effective rate means the dollar stakes are smaller here than in neighboring counties, but the effort is also the lightest: filing is free, the online system takes minutes, and the board must answer within 60 days.
The real work is assembling comparable sales that hold up. If you would rather hand that off, Homespring prepares the evidence and manages the whole appeal with no upfront fee.