You open a document from Utah County about your Saratoga Springs home and something looks off. A number that seems way lower than what you paid, what you think the home is worth, or what you've seen listed nearby.
It's not an error. It's not a sign your home has lost value. Here's what's actually happening — and why Utah sends you two different documents with two different numbers.
Utah Sends You Two Documents — and They Show Different Numbers
This is where most of the confusion starts. Utah County mails homeowners two separate documents at different times of year, and they show different values for a reason.
The Valuation Notice — mailed approximately the second week of July each year — shows the county assessor's estimate of your home's full market value. Per the Utah County Auditor's Valuation Notice FAQ: "The 'Market Value' listed on the Valuation Notice is about what my house would sell for." This is the assessor's best estimate of what your home would fetch in an open market sale.
The Tax Notice — mailed in the fall — shows your taxable assessed value, which is a lower number. As the Utah County Auditor confirms: "Residential property is taxed on 55% of the market value. This amount, known as the taxable value or assessed value, does not appear on the Valuation Notice but will be on the actual Tax Notice."
So if you're looking at your Valuation Notice and the number seems lower than market — that's the assessor's full market value estimate, which should be closer to reality. If you're looking at your Tax Notice and confused by an even lower number — that's the post-exemption taxable value, which is intentionally lower.
The 45% Exemption: Why Your Taxable Value Is Lower Than Market Value
Per Utah law, as confirmed by the Utah County Auditor: "For primary residences, Taxable Value is only 55% of the Assessed Market Value."
Utah gives every primary homeowner a 45% reduction before your tax rate is applied. This is called the primary residential exemption.
Here's the math on a typical Saratoga Springs home, using the example from Utah's Legislative Interim report on property tax (Ulibarri & Parkinson, 2023):
| Amount | |
|---|---|
| Assessor's market value estimate | $400,000 |
| Primary residential exemption (45%) | − $180,000 |
| Taxable assessed value | $220,000 |
| Tax rate applied | × 0.011 |
| Annual property tax bill | $2,420 |
Your home has not been assessed at $220,000. It's been assessed at $400,000 — you're simply only taxed on 55% of that. The exemption saves you real money every year.
On r/Utah and Saratoga Springs Facebook community groups, this confusion comes up constantly. The most common post: "Just got my tax notice and it says my home is worth $280,000 — I paid $450,000 two years ago. Is something wrong?" Nothing is wrong. They're reading the taxable value on the Tax Notice — not the full market value estimate.
Why Even the Full Market Value Estimate May Look Low
If your Valuation Notice market value still seems lower than what you think your home is worth, two things explain it:
Assessed values lag the market. The assessor updates values annually — but in a fast-appreciating market like Saratoga Springs, your home may have grown in value faster than the latest assessment reflects. This typically works in your favor on your tax bill.
The assessor uses MLS data — but it has limits. Utah is a non-disclosure state, meaning the transfer deed of a sold property does not record the sale price in public records. Per Utah county assessors John Ulibarri and Jake Parkinson's legislative report: "This forces county assessors to rely on alternative information sources such as the local multiple listing service (MLS) and transfer surveys. Most counties enjoy a positive relationship with their local MLS and receive the majority of the residential transactions through that source."
So the assessor does use MLS data — but because Utah is non-disclosure, the MLS doesn't capture every transaction. During periods of rapid appreciation like Saratoga Springs experienced in 2020–2023, values can rise faster than the assessment cycle catches up.
Something Most Saratoga Springs Homeowners Don't Know: The Tax Shift
Here's a broader picture worth understanding. Per the same Utah Legislative report (Ulibarri & Parkinson, 2023), residential property owners now carry 91% of Utah's total property tax burden — up from 79% in 2000.
The reason: residential home values have appreciated dramatically faster than commercial properties, personal property, and centrally assessed property (utilities, railroads). Because Utah taxes each property type in proportion to its market value, the faster residential values rise, the larger the share of the total tax burden residential owners carry.
The report's conclusion is direct: "The bad news is the rapid appreciation of residential property, and the resulting tax shift, has started to outstrip the ability to pay for many of our owners."
For Saratoga Springs homeowners — one of the fastest-appreciating markets in Utah County — this shift is especially relevant. Your home's rapid appreciation is good for your equity, but it also means you're carrying more of the regional tax burden than you were five years ago.
What the Assessed Value Is NOT
To be clear about what neither document tells you:
- ❌ Not your home's current market value
- ❌ Not what your home would sell for today
- ❌ Not what a buyer would use to make an offer
- ❌ Not what a lender uses for a refinance appraisal
If you want to know what your Saratoga Springs home is actually worth in today's market, the assessed value — whether from the Valuation Notice or the Tax Notice — is the wrong place to look.
What Your Home Is Actually Worth
The only reliable answer is a Comparative Market Analysis (CMA) based on what comparable homes have actually sold for recently, pulled from MLS records by a licensed agent. As I covered in my Zestimate accuracy guide for Saratoga Springs and CMA vs. appraisal guide, a real MLS-based valuation is the standard used by appraisers, lenders, and buyers.
I offer free, MLS-based home valuations for Saratoga Springs homeowners — delivered within 48 hours.
Request Your Free Home Valuation →
Related reading:
- Why Your Zestimate Is Wrong in Utah — Saratoga Springs
- Home Appraisal vs. CMA in Saratoga Springs
- How Much Equity Do I Have in My Saratoga Springs Home?
- Utah Homeowner Property Tax Exemptions 2026
- Saratoga Springs Property Tax Increase 2026
Sources: Utah County Auditor — Valuation Notices FAQ — confirms market value on Valuation Notice, taxable value on Tax Notice, 55% rule; Utah County Auditor — Property Taxes — 55% of assessed market value for primary residences; Utah County Assessor — Frequently Asked Questions — three valuation approaches, July mailing timeline; Ulibarri, John (Weber County Assessor) and Parkinson, Jake (Tooele County) — Property Tax in Utah: Burden Shift to Residential Properties, Utah Legislature Interim Report 2023 — MLS use by county assessors, 91% residential tax burden, 79% in 2000, worked dollar example, rapid appreciation outstripping ability to pay.
Frequently Asked Questions
Why does my Tax Notice show a value much lower than what I paid for my home? Because Utah only taxes primary residences on 55% of their market value. The number on your Tax Notice is the taxable assessed value — your home's estimated market value after a 45% primary residential exemption is applied. If the assessor estimates your home is worth $400,000, your taxable value is $220,000 and your annual tax bill at a typical rate would be approximately $2,420. Your home hasn't been assessed at $220,000 — that's just the taxable portion.
What is the difference between the Valuation Notice and the Tax Notice? Utah County sends two documents. The Valuation Notice (mailed around July) shows the assessor's full market value estimate. The Tax Notice (mailed in the fall) shows the taxable assessed value after the 55% calculation — the lower number your tax rate is applied to. The exemption does not appear on the Valuation Notice; it is applied when calculating the Tax Notice.
Does the Utah County Assessor use MLS data to value homes? Yes. Per a Utah Legislative Interim report by county assessors John Ulibarri (Weber County) and Jake Parkinson (Tooele County), assessors rely on the local MLS as their primary source of residential sales data. However, because Utah is a non-disclosure state — meaning sold prices are not part of the public deed record — not every transaction is captured, and values can lag the market during periods of rapid appreciation.
Why are residential homeowners paying a larger share of Utah property taxes over time? Residential home values have appreciated faster than commercial properties and other taxable property types. Because Utah taxes each property type in proportion to its market value, faster residential appreciation means homeowners carry a larger share of the total tax burden. Per a 2023 Utah Legislative report, residential owners now carry 91% of Utah's property tax burden, up from 79% in 2000.
How do I find out what my home is actually worth today? A Comparative Market Analysis (CMA) from a licensed Utah agent with MLS access is the most reliable source. The assessed value and Zestimate are both imprecise for different reasons. An MLS-based CMA reflects what comparable homes have actually sold for in your specific neighborhood recently.
Can I appeal my assessed value if I think it's too high? Yes. If you believe the market value on your Valuation Notice is too high, you can appeal. Contact the Utah County Assessor's Office at 801-851-8227 or visit the Utah County Auditor's Valuation Appeal page for procedures and deadlines.