Key Takeaways:
- Two Different Numbers: Appraised value is the tax figure set by your appraisal authority; market value is what a buyer would actually pay.
- Only One Drives Your Tax: Your property tax is based on the appraised value, not what your rental could sell for.
- Cost Segregation Connection: Watching the appraised-versus-market gap helps your local bill, while cost segregation cuts the larger federal one.
When your rental’s tax notice arrives, the number on it is the appraised value, not what your property would sell for today. Many landlords assume the two are the same, but they are calculated differently and serve different purposes. Knowing why they diverge, and which one matters when, helps you spot an inflated tax bill and make sharper decisions about your investment.
At MVO Cost Segregation, we work with real estate investors across all 50 states to reduce their federal tax burden through engineering-based cost segregation studies. Our founder Andrew spent over a decade at KPMG and personally reviews every report we deliver. Our studies carry a 100% IRS acceptance rate.
In this piece, we will cover what each value means, why they often do not match, what the gap means for a landlord, and where the larger savings live.
What Each Value Actually Means
Appraised value and market value answer different questions. Keeping them straight is the foundation for everything else.
Appraised Value Is The Tax Number
Your appraisal authority assigns an appraised value each year using standardized criteria like size, condition, location, and comparable sales. This is the figure your property tax is calculated on, and in some states it is called the assessed value.
Market Value Is What A Buyer Would Pay
Market value reflects current buyer demand, what someone would actually pay for your rental in today’s market. It moves with trends, competition, and local economic conditions, and it is the number that matters when you buy, sell, or refinance.
Why The Distinction Matters
Only the appraised value drives your tax bill. Your rental could be worth far more or less on the open market without that changing what you owe, which is exactly why the two numbers need to be understood separately.
Why The Two Values Often Diverge
The gap between appraised and market value is normal, because the two are built from different inputs on different timelines. Understanding the causes helps you judge whether your number is fair.
Standardized Formula Versus Real-Time Demand
Appraised value follows a fixed, data-driven method applied across many properties at once. Market value reflects live buyer behavior. A formula simply cannot move as fast as a real estate market.
Timing Lag
Appraised values are set on a periodic schedule, so in a fast-moving market the tax figure can lag behind what buyers are paying, or jump unexpectedly when the authority catches up.
Property-Specific Details
Recent improvements, deferred maintenance, or condition issues may show up in one value before the other. An authority’s data may miss a problem that a buyer would immediately price in.
What The Gap Means For A Landlord
For an investor, the relationship between these two numbers is not academic. It points directly to where you may be overpaying or where to pay attention.
When Appraised Runs Above Market
If your appraised value sits above what your rental would realistically sell for, you are likely overpaying on taxes. That gap is your evidence for an appeal, supported by recent comparable sales and condition documentation.
When Appraised Lags Market
A low appraised value feels like a win on taxes, but it can complicate a refinance or sale, where lenders rely on a market-based appraisal. Knowing the gap exists helps you plan those moves.
Keep Records To Defend Your Position
Maintain documentation of improvements, repairs, and condition. A clear paper trail supports an accurate appraised value and strengthens any protest you decide to file.
Where Investors Find The Larger Savings
Managing the appraised-versus-market gap keeps your local bill fair, but that bill is only one part of your tax picture. The federal side is larger and more controllable, and it is unaffected by either local number.
Appeal The Local Value When It Overshoots
If your appraised value exceeds market value, protest it with adjusted comps and documentation. A successful appeal lowers the local bill, though it is capped by how much you were over-assessed.
The Bigger Federal Lever
A cost segregation study reduces your federal taxable income by accelerating depreciation on components that qualify for shorter recovery periods of 5, 7, or 15 years. Because it works on the full cost of your building rather than a capped assessment, the savings often dwarf an appeal. Paired with bonus depreciation, a significant share can be deducted in the first year the property is placed in service, and our clients typically see first-year returns of 10x or more on the cost of their study.
Final Thoughts
Appraised value and market value are two different numbers built for two different purposes: one sets your tax bill, the other reflects what your rental would sell for. They diverge because a standardized formula cannot track a live market in real time. For a landlord, the gap is a signal, an appraised value above market means you may be overpaying and have grounds to appeal, while one that lags can complicate a sale or refinance.
Watching that gap keeps your local bill fair, but the larger opportunity is federal. Cost segregation reduces your federal taxable income on a far bigger base than any appeal can reach. With over 3,000 studies completed across all 50 states and a 100% IRS acceptance rate, we are ready to help you lower the part of your tax bill that matters most.
Frequently Asked Questions About Appraised Value Vs. Market Value
What is the difference between appraised value and market value?
Appraised value is the figure your appraisal authority uses to calculate property tax. Market value is what a buyer would pay for your rental today. The two often differ because they use different methods and timelines.
Which value determines my property tax?
The appraised value. What your rental could sell for on the open market does not directly change your tax bill, only the appraised value the authority assigns does.
Why is my appraised value different from what my rental would sell for?
Appraised value follows a standardized formula updated periodically, while market value moves with live buyer demand. A formula cannot keep pace with a fast-moving market, so the two diverge.
What does it mean if my appraised value is higher than market value?
You may be overpaying on property tax. That gap is strong grounds for an appeal, supported by recent comparable sales and documentation of your rental’s condition.
Is a low appraised value always good?
Not entirely. It lowers your tax bill, but it can complicate a refinance or sale, where lenders use a separate market-based appraisal. It helps to know the gap exists.
Does cost segregation depend on either value?
No. Cost segregation is a federal income tax strategy based on an engineering study of your building’s components. It is separate from both your appraised and market value and reduces your federal taxable income.