You could lose actual money if you mix up the two separate prices of your house. Your property tax bill is determined by the assessed value. Your mortgage or refinance is supported by appraised value. Here are eight reasons the two numbers differ, along with sources you may check, so you can decide which to believe.
You're not alone if you've ever opened a property tax bill and thought the figures didn't quite match what you paid for the house. Your home's value is described by two separate figures, and they hardly ever coincide. Your yearly property tax bill is determined by one. The other informs your lender of the maximum amount they can lend you in exchange for the property. It can cost you actual money to mix them up when you're attempting to budget, buy, or refinance.
The most common abbreviation, "home value," obscures the fact that appraised value and assessed value are derived from entirely separate methods. They are produced by several individuals. They are governed by different schedules. They are driven by several techniques. And when either is incorrect, various outcomes occur.
Here are eight ways that evaluated and appraised value differ, along with sources you may check. When you're budgeting for a house you already own or are considering purchasing, you'll know which figure to trust for which decision, how to question either one when the math looks incorrect, and how to account for the difference between both.
Assessed value comes from your local tax assessor's office, sometimes called a county appraiser or property appraiser depending on where you live. The assessor is usually a public official whose job is to value every taxable property in the jurisdiction. The office often handles thousands or tens of thousands of parcels each cycle, so most of the work happens through mass appraisal techniques and computer-assisted valuation models, not property-by-property inspections.
Appraised value comes from a state-licensed appraiser hired to value one specific property at one specific moment. Residential appraisers in the United States are licensed at the state level under guidelines coordinated through The Appraisal Foundation, and they must follow the Uniform Standards of Professional Appraisal Practice, known as USPAP. When you buy a home or refinance, your lender orders the appraisal through an appraisal management company or directly from a qualified appraiser. The appraiser inspects the property, pulls comparable sales, and produces a written report.
The credentialing gap matters. A tax assessor isn't necessarily a state-licensed appraiser, though some hold dual credentials. The appraiser working on your mortgage absolutely must be licensed, follow USPAP, and certify the report under federal and state rules. If you're working with AmeriSave on a purchase or refinance, the appraisal comes from a qualified, independent appraiser ordered through the standard lender channels.
Assessed value has one purpose: calculating your property tax bill. Your local government multiplies the assessed value, after any exemptions, by the local mill rate or tax rate to figure out what you owe each year. Property taxes are the single largest source of tax revenue for local governments in the country. National property tax collections totaled roughly $827 billion across all four quarters of the most recent year, and the Tax Foundation reports that property taxes account for about 70% of all local tax collections.
Appraised value serves a completely different audience. Lenders use it to underwrite mortgages. The appraisal answers two questions for the lender: is the property worth at least what the buyer is paying, and does the loan amount fall within an acceptable loan-to-value ratio? An appraisal that comes in below the contract price can force a buyer to bring more cash to closing, renegotiate the deal, or walk away. An appraisal that comes in high can support a cash-out refinance or a home
Buyers, sellers, and existing homeowners use appraised value for their own decisions too, including pricing a home for sale, estimating equity, or weighing a second mortgage. The number means something concrete to a lender and to anyone making a transaction-level decision. The assessed value doesn't carry that weight outside the tax bill itself.
Assessment cycles vary widely by jurisdiction. Some counties reassess every year. Others operate on two-, three-, four-, or even 10-year cycles. Between full reassessments, many assessors apply broad percentage adjustments to reflect general market trends rather than reinspecting individual properties. The result is that your assessed value can lag actual market conditions by months or, in some places, by years.
Appraised value is a snapshot. The appraisal report carries an effective date, the date the value applies to, and after a short window the report goes stale. For conventional loans, Fannie Mae and Freddie Mac treat an appraisal as valid for 12 months but typically require an appraisal update after 120 days. Federal Housing Administration appraisals are valid for 180 days, and Department of Veterans Affairs appraisals are valid for six months. After the window closes, you typically need a new appraisal or an appraisal update before closing.
This timing gap is one reason a rising market can leave assessed value well below market value for several years until the assessor catches up. It also explains why a falling market can produce the opposite problem: a tax bill based on a higher assessed value than the home would actually sell for today.
Tax assessors rely heavily on mass appraisal techniques. Computer-assisted mass appraisal systems analyze sales data, property characteristics, neighborhood trends, and recent permits to value thousands of parcels at once. Individual inspections are uncommon outside of major changes like new construction, a meaningful addition, or a property tax appeal that requires a fresh look.
Licensed appraisers follow a single-property approach. The Uniform Residential Appraisal Report, known as Form 1004, is the standard form used for most conventional residential loans sold to Fannie Mae and Freddie Mac. The appraiser typically applies three valuation approaches. The sales comparison approach uses recent sales of similar homes. The cost approach estimates what it would cost to rebuild the home minus depreciation. The income approach is most often used for rental properties. For most owner-occupied homes, the sales comparison approach drives the final number.
That methodology gap is part of why assessed value tends to come in below appraised value. Mass appraisal smooths out the high and low ends of a market. An individual appraisal captures the specific home, lot, condition, and recent comparable sales, often with a more current view of what buyers are actually paying.
Assessed value drives your annual property tax bill. The effective property tax rate varies dramatically across the country. New Jersey has the highest effective rate at 2.23%, followed by Illinois at 2.07% and Connecticut at 1.92%. Hawaii sits at the other end at 0.27%, with Alabama, Nevada, and Colorado all under 0.5%. Most states fall somewhere between 0.5% and 1.5%.
Here's a quick worked example using the recent national average. The national effective property tax rate sits at roughly 0.9% based on aggregate U.S. Census Bureau American Community Survey data analyzed by the National Association of Home Builders. On a home with $400,000 in taxable assessed value at 0.9%, the annual property tax bill works out to $3,600, or roughly $300 a month folded into a typical mortgage escrow.
Appraised value affects how much you can borrow against the home. Loan-to-value ratios divide the loan amount by the appraised value. Say you're buying a $400,000 home with $80,000 down. Your $320,000 loan represents an 80% loan-to-value ratio, the threshold at which conventional loans can typically avoid private mortgage insurance. If the appraisal comes in low at $380,000, that same $320,000 loan is now an 84% loan-to-value, which can trigger mortgage insurance requirements or limit the loan options available to you.
At AmeriSave, our team works with you on the loan-to-value math whether the appraisal supports the contract price or comes in below. The conversation often involves restructuring the loan, adjusting the down payment, or requesting a reconsideration of value with additional comparable sales the original appraiser may not have considered.
Most states apply some combination of assessment ratios, exemptions, and assessment caps that drive a wedge between assessed and market value. The result is a tax base that intentionally lags the actual market in many places, especially for long-tenured owners.
An assessment ratio is the percentage of fair market value used to set assessed value. South Carolina, for example, assesses owner-occupied homes at 4% of fair market value while assessing commercial property at 6%. Other states assess at or near 100% of market value but rely on caps to control year-over-year increases.
California's Proposition 13 limits annual assessed value increases to 2% for as long as the same owner holds the property. Florida's Save Our Homes amendment caps homestead property assessment increases at the lesser of 3% or the change in the consumer price index. Texas caps homestead property at 10% annual increases.
Homestead exemptions further reduce taxable assessed value, often by a flat dollar amount or a percentage of value, with the details set by state and local law. The combined effect is that long-term homeowners in many states pay property tax on a number well below current market value. Appraised value doesn't get these statutory adjustments. The appraisal reflects current market conditions, comparable sales, and the property's actual condition, full stop.
You can challenge both values, but the processes are completely separate, and each one has its own evidence rules, deadlines, and decision-makers.
Property tax appeals run through your county assessor's office or a local board of review. Most jurisdictions give you 30 to 90 days from the assessment notice to file an appeal, though the exact window varies by state and county. The appeal typically requires evidence that comparable properties in your area are assessed lower than yours, or that your home's actual market value is lower than what the assessor recorded. A recent appraisal report, a recent purchase contract, or a list of comparable sales can all serve as supporting evidence. Successful appeals can lower the tax bill for the current year and, depending on jurisdiction, sometimes for prior years.
Appraisal disputes go through your lender. If your appraisal comes in low, you can submit additional comparable sales for the appraiser to consider in what's called a reconsideration of value. Your real estate agent or loan officer can help compile sales the original appraiser may have missed. The Consumer Financial Protection Bureau, alongside the FDIC, Federal Reserve, NCUA, and OCC, has issued interagency guidance on reconsideration of value for residential real estate, and lenders are expected to provide clear, plain-language information about how to request one.
In rare cases, lenders will order a second appraisal entirely, though that comes with another appraisal fee. Industry surveys including Bankrate and Angi put the average single-family home appraisal at about $358, with a typical range of roughly $300 to $600 for standard properties and more for complex, rural, or high-value homes.
It is highly likely that the two numbers will be different. That's typical, and on the tax side, it usually works out well for you. In order to act on the appropriate information, it is important to know which number corresponds to which decision.
Consider filing a property tax appeal if your assessed valuation appears to be significantly more than what comparable homes are selling for. Property tax overpayments don't reimburse themselves, so you can be paying more in taxes than the law truly mandates. You must inquire.
You have options if the contract price during a transaction is much higher than your appraised value. If your contract has an appraisal contingency, you can walk away, bargain with the seller, request a reconsideration of value with additional comparable sales, or bring more money to the closing.
It's fantastic news if your appraised value during a refinance turns out to be higher than anticipated. A home equity loan, a home equity line of credit, or a cash-out refinance may be supported if you have more usable equity than you anticipated. Every day, we at AmeriSave work through similar situations with homeowners. Typically, the discussion begins with verifying whether your loan-to-value objective is supported by the current appraised value.
Additionally, it is normal for the two values to change in opposing directions, such as when market values are rising while your county is undergoing a multi-year reassessment cycle. The system incorporates the lag. Instead of working against it, plan around it.
Two distinct questions are addressed by assessed value and appraised value. Your yearly property tax bill is determined by one. The other backs your refinance or mortgage application. The figures are derived from several sources, using various techniques, on various timetables, and with varying repercussions when one of them is inaccurate. Checking which number is which while making a decision is the most beneficial habit you can develop as a homeowner. The assessed value is the most important factor to consider when creating a property tax budget. The evaluated value is crucial whether considering a refinance, a home equity product, or purchasing a new residence.
The AmeriSave team can explain whether your current appraised value supports a refinance, a home equity option, or a clearer view of the equity you've built if you'd want to discuss where your numbers truly lie. Visit our website whenever you're prepared to begin the discussion.
Because most states use assessment ratios, homestead exemptions, or annual growth caps that keep the taxable figure below current market value, assessed value is usually less than appraised value. Additionally, actual market changes are sometimes years behind the evaluation cycle.
No matter how much market value has increased, California's Proposition 13 restricts annual assessment increases to 2%. Homestead assessment increases are limited by Florida's Save Our Homes restriction to 3% or the consumer price index. The disparity is incorporated into the formula in jurisdictions using assessment ratios, like South Carolina, where owner-occupied properties are assessed at 4% of fair market value. There are no such restrictions on the appraised value utilized for a mortgage; instead, it represents the state of the market at the time of the appraisal.
Situation: The lender's appraisal of the house you purchased was $380,000, but a property tax assessment notice with an assessed value of $425,000 shows up. The tax bill seemed excessively hefty.
A recent appraisal may be used as supporting documentation in a property tax appeal in the majority of jurisdictions. Include the appraisal report and comparable sales for comparable properties in your appeal, which must be filed within your county's deadline, which is often 30 to 90 days after the assessment notification. The appeal board has the option to accept the lower figure, ask for more proof, or make its own modification. A current evaluation well below the assessed value is one of the best pieces of evidence you can present, but success isn't assured because the assessor employs a different technique. Property taxes provide for the majority of local government tax revenue, thus governments take appeals seriously and have formal procedures in place to address them.
Single-family house evaluations typically range from $300 to $600, with an average of roughly $358. High-value, rural, or complex properties might cost anywhere from $700 to $1,500 or more.
In a purchase transaction, the appraisal is typically paid for by the buyer; however, the cost may be negotiated and occasionally reimbursed by closing-cost credits.
Worked example: You might spend roughly $500 for the appraisal as part of your closing costs for a typical $400,000 property purchase with a conventional financing. The assessment may be closer to $1,200 if the property is unique, such as a 40-acre rural parcel with a custom-built home, because it takes longer for the appraiser to find truly comparable sales. Most of the time, the charge is paid upfront, usually through the lender, and it is not reimbursed in the event that the loan does not close.
If an appraisal is lower than the contract price, you typically have four options: walk away if your contract contains an appraisal contingency, renegotiate a lower price with the seller, bring more cash to closing to make up the difference, or request a reconsideration of value with new comparable sales.
Loan-to-value calculations are impacted by a low assessment. An assessment at $380,000 would restrict your maximum 80% loan-to-value conventional loan to about $304,000 on a $400,000 contract with a $80,000 down payment, requiring you to either renegotiate or bring in an extra $16,000 in cash. By presenting comparable transactions that the initial appraiser might have overlooked, many purchasers attempt a rethink of value first. The borrower's right to obtain the assessment and ask for a reconsideration is confirmed by the Consumer Financial Protection Bureau. The next course of action is typically a price renegotiation, a different loan arrangement, or the use of the appraisal contingency if the value remains unchanged.
Each jurisdiction has a very different assessment cycle. While some counties reevaluate annually, others do so every two, three, four, or even ten years. Assessors usually apply broad market modifications to reflect general changes in between complete reassessments.
To maintain assessed values near to present conditions, the majority of big counties use annual or biannual cycles. In order to control expenses, smaller and more rural counties frequently run on longer cycles. Property values in Florida are assessed every year. Every year, assessors in Massachusetts must appraise every real estate at full and fair cash worth. The state Department of Revenue certifies assessment procedures every five years. There have been more than 20 years between complete reassessments in a number of Pennsylvania counties, which can result in significant changes when one does occur. Check the website of your assessor's office or your most recent property tax assessment notice to determine your county's cycle.
No, a current appraisal is usually necessary, and lenders underwrite refinances using appraised value rather than assessed value.
Fannie Mae's appraisal waiver and Freddie Mac's automated collateral evaluation are two examples of refinance programs that grant appraisal waivers when automated underwriting accepts an existing valuation from a database. However, these systems still rely on independent valuation models rather than your county tax assessment.
Worked example: Let's say your last complete appraisal was $450,000, but your assessed value is $300,000. When refinancing a $250,000 mortgage, the lender determines your loan-to-value ratio using $450,000 or a fresh appraisal. This puts you at about 56% loan-to-value, which is significantly less than the 80% threshold where private mortgage insurance normally applies. Depending on the loan type, occupancy, and equity position, AmeriSave's refinance experts can help you determine whether your refinance is eligible for an appraisal waiver or if a new complete appraisal is required.
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