Property tax appeal win rates by state: what the data actually shows

Last updated 2026-07-09

What is the average property tax appeal win rate across the country?

Roughly 40 to 60 percent of homeowners who file a formal appeal win some reduction. Nobody tracks this cleanly at the national level, though. That's the honest answer. The closest reliable source is a 2022 Lincoln Institute of Land Policy working paper, which found reduction rates in that 40 to 60 percent band depending on jurisdiction, with the median reduction running about 10 to 15 percent of assessed value ^[1]. The Urban Institute has reported similar ranges in its local finance work, but state-by-state numbers sit scattered across individual county assessor reports, not one federal database.

Here's what we do know. Most homeowners never appeal at all. The National Taxpayers Union Foundation estimated in 2020 that only about 2 to 5 percent of eligible homeowners file a property tax appeal in any given year, yet the majority of those who do file walk away with at least some reduction ^[2]. That gap between eligibility and action is where money gets left on the table.

The variation between states is real and large. Texas appellants have historically seen reduction rates above 60 percent at the informal hearing stage, partly because the protest system is built to be easy to use. Cook County, Illinois data shows contested residential appeals getting some relief in roughly 50 to 55 percent of cases at the Board of Review level ^[3]. New York's Small Claims Assessment Review (SCAR) program for residential properties reports settlements or reductions in the 40 to 50 percent range. At the other end, California under Proposition 13 sees very low appeal volumes because the base value rarely moves ^[4].

So when someone asks "what are my odds," the real answer is: better than most people assume, and shaped heavily by your state, your county, and the quality of the comparable sales you bring.

Which states have the highest property tax appeal win rates?

Texas leads. The Texas Comptroller's Property Tax Assistance Division reports that over 50 percent of all property tax protests result in a value reduction, and in urban counties like Harris and Bexar the informal hearing success rate runs higher still ^[5]. The system helps. Texas requires the appraisal district to meet with you informally before a formal Appraisal Review Board (ARB) hearing, which gives you a second bite at the apple. If you're in Bexar County and want county-specific details, see our guide on the bexar county tax assessor.

Illinois runs a layered appeal system that, oddly enough, pushes total win rates up because you get multiple chances. You appeal first to the county assessor, then the Board of Review, then the Illinois Property Tax Appeal Board (PTAB), and finally circuit court. Cook County Board of Review data shows residential appellants getting reductions in roughly half of completed cases ^[3]. For Cook County specifics, our cook county tax assessor tax bill guide walks through the local process.

Georgia's numbers look favorable too. The Georgia Department of Revenue's administrative process allows a Board of Equalization hearing, and homeowners have 45 days from the assessment notice to file ^[11]. High-growth counties see win rates above 50 percent for people who bring actual comparable sales. Gwinnett County, one of the fastest-growing counties in the country, has seen heavy protest volumes. See our breakdown at gwinnett county tax assessor.

Maricopa County in Arizona is worth flagging. Residential appeals at the County Assessor level settle in the appellant's favor more often than not when the homeowner documents a specific valuation discrepancy. Details are at maricopa property tax.

New Jersey carries among the highest effective property tax rates in the country, averaging 2.23 percent of home value in 2023 per the Tax Foundation ^[6]. Its direct appeal process to the County Tax Board works well for both represented and unrepresented homeowners, and both groups see meaningful win rates ^[12].

Which states have the lowest appeal win rates or the hardest processes?

California is the case to understand first. Under Proposition 13, your assessed value is locked at purchase price and can rise only 2 percent a year unless there's a change of ownership or new construction ^[4]. Most long-term owners are assessed well below market value, so there's almost no reason to appeal. Volumes stay low, win rates among those who do appeal stay low (you're usually arguing against a value near what you paid), and the Assessment Appeals Board can take 12 to 24 months to decide. San Diego shows how this plays out locally. See san diego property tax and los angeles county property tax for county detail.

Massachusetts gives you a short window. You have 30 days from the tax bill date to file an abatement application with the local assessors, and you have to have paid at least one installment of taxes. The Appellate Tax Board (ATB) hears cases that don't resolve locally, but it's slower and more formal than most states. Win rates at the local assessor level are hard to find publicly.

States with infrequent mass reassessment cycles, like parts of the rural South, create a different problem. The assessment can be so far behind market value that appealing would mean arguing for a higher number. That's rare, but it happens where the last reassessment was a decade ago.

The hardest obstacle in any state is the deadline. Miss it by one day and you wait a full year. The table below breaks down the deadline structures.

What does the appeal success rate data look like state by state?

The table pulls from state agency reports, assessor annual reports, and the Lincoln Institute data where available. Where no state-level figure exists, the range reflects county-level data from the largest counties. Treat these as informed estimates, not audited statistics. The Lincoln Institute notes that win rate data is "rarely collected systematically at the state level" ^[1].

State	Approx. appeal win rate (residential)	Key appeal body	Typical deadline
Texas	55-65%+	Appraisal Review Board	May 15 or 30 days after notice
Illinois	45-55%	Board of Review, then PTAB	Varies by county (often 30 days after publication)
Georgia	50-60%	Board of Equalization	45 days from assessment notice
New York	40-50%	Board of Assessment Review, then SCAR	Grievance Day (varies by municipality, often 3rd Tue in May)
New Jersey	40-50%	County Tax Board	April 1 (or 45 days from assessment notice)
Arizona	45-55%	County Assessor, then State Board	60 days from notice of value
Florida	40-50%	Value Adjustment Board	25 days from TRIM notice
Pennsylvania	35-50%	County Board of Assessment Appeals	Varies widely by county
California	20-35%	Assessment Appeals Board	60 days from mailing of notice (some counties September 15)
Michigan	35-50%	Board of Review, then Michigan Tax Tribunal	March Board of Review (protests filed in person or by letter)

Sources: Texas Comptroller ^[5], Illinois PTAB annual report, Georgia DOR administrative appeals data ^[11], New York State ORPTS ^[7], Lincoln Institute ^[1], Tax Foundation ^[6].

For Lake County, Illinois, homeowners have their own procedures worth reviewing. See lake county property tax. St. Louis County, Missouri, which sits outside this table, handles personal property tax separately. See st louis county personal property tax.

One number worth remembering. A 2019 ProPublica investigation found that in Cook County, Illinois, commercial and wealthy residential properties were far more likely to be successfully appealed than lower-value homes, largely because tax attorneys filed for those properties ^[10]. Read that as encouragement, not a warning. DIY appeal success is very possible. It just takes the same quality of evidence a professional would bring.

What actually drives whether you win or lose a property tax appeal?

Evidence quality decides it. Full stop. Assessors and appeal boards want one thing: proof that the assessed value doesn't match your property's market value on the assessment date. The strongest form of that proof is three to six comparable sales (comps) of similar properties that sold near the assessment date at prices lower than what your assessment implies.

Comps have to be genuinely comparable. Same general neighborhood, similar square footage (within 20 percent is a reasonable target), similar age, lot size, and condition. Bring 3,000-square-foot new construction to defend an 1,800-square-foot house from 1985 and the board ignores it. Specificity wins.

The type of appeal system drives outcomes too. States with an informal hearing step before the formal one, and Texas is the clearest example, give you an extra chance to settle without going on the record. Plenty of Texas homeowners win at the informal stage just by showing up with printed MLS comps and a calm voice.

The uniformity argument is underused. If your property is assessed at a higher percentage of market value than similar nearby homes, that's an equal-and-uniform violation. In Texas, this is a statutory right under Tax Code Section 41.43 ^[5]. Most states treat uniformity as a legal standard even where it's less explicitly codified. Pull your neighbors' assessment records (public record in nearly every state) and show your effective assessment ratio runs higher, and that can hit as hard as comps.

Representation matters, but not the way people think. An attorney or consultant does correlate with higher win rates in some jurisdictions, but the reason is usually evidence preparation, not courtroom skill. A self-represented homeowner with three tight comps and a clean one-page summary often does as well as a hired hand. The TaxFightBack DIY appeal kit is built around that preparation so you don't walk in blind.

Condition matters practically. If your house has a structural issue, a foundation problem, or deferred maintenance that the assessment doesn't reflect, photos and repair estimates are legitimate evidence. Some states explicitly allow condition evidence. Others treat it as secondary to market data.

How do property tax appeal deadlines vary by state?

Deadlines are where most DIY appeals die before they start. Every state sets a hard cutoff, and almost none offer extensions to a homeowner who simply missed the date.

Texas gives one of the more generous windows. You have until May 15 or 30 days after the appraisal district mails your Notice of Appraised Value, whichever is later ^[5]. That flexibility matters, because not everyone checks the mail promptly.

New York runs a system where the deadline is called "Grievance Day," set at the municipal level rather than the state level. Most towns set it as the third Tuesday of May, but yours might differ. The New York State Office of Real Property Tax Services (ORPTS) publishes a directory of assessment offices where you can confirm your local date ^[7].

Florida's deadline is 25 days from the mailing of the TRIM (Truth in Millage) notice, which typically goes out in August ^[8]. Miss that window and you're done for the year.

New Jersey's April 1 deadline is one of the earliest in the country, and it catches people off guard because assessment notices often land in February or March ^[12].

California allows 60 days from the mailing of a Notice of Proposed Escape Assessment, but for standard annual assessments the filing period runs generally July 2 through November 30 (or September 15 in some counties) with the county Assessment Appeals Board ^[4].

Here's the practical move. Set a calendar alert for January 1 every year to look up your state's deadline. Then look up your county's deadline, because in states like Illinois and New York, counties and municipalities set their own windows inside the state framework.

Does hiring a property tax consultant actually improve your chances vs. doing it yourself?

Sometimes, but far less than the industry claims. That's the honest answer.

Contingency-fee consultants typically charge 25 to 50 percent of first-year tax savings. On a $3,000 annual tax bill with a 15 percent reduction, that's $112 to $225 going to the consultant out of a $450 total savings. You keep $225 to $337. Win the same reduction yourself and you keep the full $450.

The evidence that consultants dramatically outperform prepared DIY filers is thin. The ProPublica Cook County investigation found that professional firms did win at higher rates, but most of that edge came from volume (they file thousands of cases and know the local process cold) and from cherry-picking properties with the most obvious overassessments ^[10]. A homeowner with a clear overassessment and a properly built comp set isn't at a structural disadvantage in a residential appeal.

Where consultants earn their fee: commercial property appeals, where income capitalization analysis is required and the dollar amounts justify the cost; states with complex multi-step processes where a procedural misstep can close off future options; and cases where you genuinely don't have time to build the evidence yourself.

For a standard residential appeal, DIY is the better financial move if you'll spend three to five hours on preparation. That preparation, done right, decides success more than who sits in the chair at the hearing.

How do effective property tax rates by state compare, and does that affect appeal incentives?

The higher your effective property tax rate, the more you save per dollar of assessed value reduction. That makes appeals more worthwhile in high-tax states even when the win rate is the same.

The Tax Foundation's 2023 state-local tax data and the Census Bureau's American Community Survey put effective residential property tax rates (taxes as a percentage of home value) in this rough range ^[6]:

State	Approx. effective rate (2022-2023)
New Jersey	2.23%
Illinois	1.97%
Connecticut	1.79%
New Hampshire	1.77%
Vermont	1.71%
Texas	1.60%
Nebraska	1.54%
Wisconsin	1.51%
Ohio	1.41%
Pennsylvania	1.39%
California	0.75%
Hawaii	0.32%

Texas sits at 1.60 percent, which is why a 10 percent reduction on a $400,000 home there saves about $640 a year. In California at 0.75 percent, that same reduction saves about $300. The math favors appealing in high-rate states, even when the win rate is similar.

For context, the Tax Foundation's earlier data showed national average effective rates near 1.1 percent, and the spread between the highest and lowest states hasn't narrowed much since ^[6].

In Georgia counties that have seen rapid appreciation, like Cherokee and Coweta, assessed values have sometimes jumped 20 to 30 percent in a single reassessment cycle. That creates both high appeal volumes and strong evidence for appeals. See cherokee county tax assessor and coweta county tax assessor for county context. Alabama jurisdictions like Madison County have their own procedures that reward early preparation. See madison county tax assessor.

What evidence should you bring to maximize your appeal win rate?

Three to six recent comparable sales is the foundation. "Recent" means within 12 months of the assessment date, and closer is better. Pull them from Zillow, Redfin, Realtor.com, or your county's public sales database. You want arm's-length sales (not foreclosures, estate sales, or family transfers) of properties that look like yours.

For each comp, document sale price, sale date, address, square footage, year built, lot size, and any notable condition differences. Then work out what each comp implies your property is worth per square foot or per unit. If the implied values sit consistently below your assessed value, you have a case.

Your own recent appraisal is powerful but not always needed. If you bought the home within 12 to 18 months of the assessment date at a price below the assessment, the purchase price itself is strong evidence. Statute and case law in most states treat arm's-length purchase prices as presumptive evidence of value.

Photos of condition problems (roof damage, foundation issues, outdated systems) work as supplemental evidence, not a standalone case. Pair them with a repair contractor's estimate on letterhead.

The assessment record often contains errors. Request your property record card from the assessor's office. Check square footage, bedroom count, bathroom count, lot size, and any feature listings (finished basement, pool, fireplace). Assessment offices run mass appraisal models, and errors are more common than people expect. A 100-square-foot discrepancy on a 1,500-square-foot home is a 6.7 percent error that can justify a proportional reduction.

Organize everything into a one- or two-page summary before the hearing. Boards see dozens of cases in a day. A clean summary with your three best comps, your property characteristics, and a clear requested value beats a folder of disorganized printouts every time.

What happens after you file a property tax appeal?

The first step in most states is an informal review or conference with the assessor's office. This is where a lot of cases settle. The assessor reviews your evidence and either agrees to a reduction or doesn't. Reach an agreement here, sign a stipulation, and the new value applies. Done.

If the informal review produces no agreement, or if your state skips straight to formal hearings, you get a hearing date before the appeals board (Board of Review, Appraisal Review Board, Assessment Appeals Board, Value Adjustment Board, and so on, depending on your state). These hearings are administrative, not courtroom proceedings. Most states don't require an attorney. You present your evidence, the assessor may present a counter, and the board decides.

Decisions usually land within 30 to 90 days of the hearing, though some jurisdictions run longer. Win, and the reduction applies to the current tax year (or the year in dispute), and you may get a refund of overpaid taxes if you already paid.

Lose at the administrative level and you generally can appeal to a state-level board (like Illinois PTAB) or to circuit court. State court appeals take a lot more effort and usually benefit from legal representation. For most homeowners, losing at the board level and accepting the result is the practical outcome. A few states, like New York with SCAR, offer a residential-specific track that's cheaper and faster than full court.

One thing to know. In some states, filing an appeal lets the assessor argue for a value higher than your current assessment. This is rare in residential cases but worth asking about before you file. Texas specifically bars the ARB from raising a value above the district's original value in a homeowner-initiated protest ^[5].

Are there any exemptions that could lower your bill without filing an appeal?

Yes, and homeowners skip these constantly. An appeal challenges the market value estimate. Exemptions cut the taxable value directly, regardless of market value, and many of them are not applied automatically.

The homestead exemption is the most common. Most states with property taxes offer some version, but you usually have to file a one-time application with the assessor to turn it on. Texas offers a $100,000 homestead exemption from assessed value for school district taxes as of 2023, raised by Senate Bill 2 from the prior $40,000 level ^[5]. Florida's homestead exemption removes the first $25,000 of assessed value from all taxes and another $25,000 from non-school taxes ^[8].

Senior exemptions, veteran exemptions, disability exemptions, and agricultural exemptions are widely available and often under-claimed. Each has its own income thresholds, age requirements, and application deadlines. They're separate from the appeal process and don't require you to argue about value.

The practical move is to check your current assessment notice against your assessor's website and confirm every exemption you qualify for is already applied. Missing one? Apply immediately. Some states let you get a retroactive adjustment.

Bibb County, Georgia, for example, has specific homestead and senior exemptions that apply automatically after the initial filing. See bibb county tax assessor for local exemption details.

How should you track your appeal and know if the outcome was correct?

After any hearing, get the written decision in hand and compare the final assessed value against what you requested and what was originally assessed. Calculate your actual annual savings using your local millage rate (total mills divided by 1,000, multiplied by the value reduction).

Confirm the new value shows up on the next tax bill. Clerical errors that keep an approved reduction out of the billing system are not unusual. If your bill comes in at the old value, contact the assessor's office with your written decision and request a correction or refund.

Won a reduction? Note the new value in a personal file. In states with annual reassessment (like Texas), you may run this process every year or every few years. In states with longer reassessment cycles, you might not see a notice again for four to six years.

Keep your comparable sales evidence organized. If the assessor raises your value again next cycle, your prior comps plus any updated sales form the basis of your next appeal. Building that file now makes future appeals faster.

Frequently asked questions

What percentage of property tax appeals are successful nationally?

Roughly 40 to 60 percent of homeowners who formally file a property tax appeal receive some reduction, based on Lincoln Institute of Land Policy research and county-level assessor data. There's no single national database tracking this. That success rate runs higher than most people assume, which is why filing is almost always worth attempting when you have reasonable evidence of overassessment.

Which state has the highest property tax appeal success rate?

Texas consistently shows some of the highest residential appeal success rates, with the state Comptroller reporting over 50 percent of protests resulting in value reductions. The informal hearing stage before the Appraisal Review Board gives Texas homeowners two chances to settle, which lifts the overall success percentage above states with single-stage processes.

How long does a property tax appeal take?

It varies widely. Informal resolutions in Texas can happen within 30 to 60 days of filing. New York SCAR proceedings run 3 to 6 months on average. A full Illinois PTAB hearing can take 12 to 24 months. California Assessment Appeals Board hearings sometimes exceed 18 months due to caseload backlog. Appeals that settle early move far faster than those going to formal hearings.

Can filing a property tax appeal cause my taxes to go up?

In most states, no. Many states bar the assessor from raising your value above the original assessment in a homeowner-initiated appeal. Texas Tax Code Section 41.43 explicitly prohibits it. A handful of states technically allow it in theory. Before filing, check your state's statutes or ask the assessor's office directly whether an appeal could trigger an upward adjustment. In residential cases this almost never happens.

What is the best evidence to use in a property tax appeal?

Comparable sales of similar nearby properties that sold close to the assessment date at prices implying a lower value than your current assessment. Aim for three to six comps within a mile and within 12 months of the assessment date. Your own recent purchase price (if within 12 to 18 months) is also strong evidence. Property record card errors, like wrong square footage, help but rarely win on their own.

Is it worth hiring a property tax consultant or attorney?

For standard residential appeals, usually not. Contingency-fee firms take 25 to 50 percent of first-year savings, so you keep less than half of what you'd keep doing it yourself. Their edge comes from knowing local procedures and preparing quality evidence, both of which a prepared homeowner can match. Consultants earn their fee on commercial properties, complex cases, or multi-step appeals where procedural mistakes close options permanently.

What is the property tax appeal deadline in my state?

Deadlines vary by state and often by county. Common examples: Texas is May 15 or 30 days after your notice. Florida is 25 days from the TRIM notice in August. New Jersey is April 1. California is generally July 2 through November 30. New York's Grievance Day is municipality-specific, often the third Tuesday in May. Always verify with your county assessor's website, since missing by even one day kills your appeal for that year.

Can I appeal my property taxes every year?

Yes, in most states. If your jurisdiction reassesses annually, you can file a new appeal each year based on the new notice. In states with less frequent reassessment cycles, you can still appeal whenever you get a new notice of value. Some states allow appeals even in non-reassessment years if you believe there's an error. Winning once doesn't protect you from future increases, so monitoring your annual notice pays off.

What is the difference between a property tax appeal and an exemption?

An appeal challenges the estimated market value of your property, arguing the assessor got the number wrong. An exemption cuts your taxable value by a fixed amount regardless of market value, and requires you to qualify by status (homestead, senior, veteran, disability). Both lower your bill. They're independent processes, and you can pursue both at once. Exemptions are often free money that homeowners leave unclaimed because they never applied.

How do property tax appeal win rates differ for residential vs. commercial properties?

Commercial properties get appealed at higher rates and often with professional representation, which generally produces higher nominal win rates. But commercial appeals also involve more complex income-approach valuation and larger legal fees. Residential win rates for well-prepared homeowners are comparable to professionally represented commercial cases in many jurisdictions. The ProPublica Cook County investigation found wealthier and commercial properties won more often, but the driver was evidence quality and preparation, not an inherent residential disadvantage.

What states have the highest effective property tax rates in 2023?

New Jersey led at roughly 2.23 percent of home value, followed by Illinois at about 1.97 percent and Connecticut at 1.79 percent, based on Tax Foundation data. Texas, despite its reputation, comes in around 1.60 percent. California sits near 0.75 percent because of Proposition 13's assessment caps. Hawaii is the lowest at around 0.32 percent. Higher rates mean the dollar savings from a successful appeal run larger.

Does a recent home appraisal help in a property tax appeal?

Yes. A professional appraisal completed close to the assessment date is strong evidence when it shows a value below the assessment. Boards generally treat licensed appraisals as credible third-party evidence. The downside is cost: a residential appraisal runs $300 to $600 in most markets. It's worth the expense when the potential tax savings over two to three years exceed that cost, which is often the case in high-value or high-rate markets.

What if I disagree with the appeal board's decision?

In most states, you can escalate to a state-level appeals board (like Illinois PTAB) or file in circuit or tax court. New York offers the SCAR process specifically for residential homeowners as a lower-cost court option. Further appeals generally require more legal formality and sometimes an attorney. The cost-benefit shifts here: if the annual savings from winning justify the legal fees, escalation makes sense.

Do property tax appeal win rates differ by property value?

Some evidence suggests higher-value properties win at slightly higher rates, partly because owners are more motivated to hire professionals or prepare carefully, and partly because high-value homes are harder to appraise accurately with mass appraisal methods. The gap isn't enormous, though. A prepared middle-income homeowner in a clearly overassessed property has strong odds. The ProPublica Cook County data showed the disparity was sharpest at the extremes of the value distribution.

Sources

1. Lincoln Institute of Land Policy, Working Paper on Property Tax Appeals: Homeowners who appeal assessments receive a reduction roughly 40 to 60 percent of the time; median reduction runs about 10 to 15 percent of assessed value
2. National Taxpayers Union Foundation, Property Tax Report: Only about 2 to 5 percent of eligible homeowners file a property tax appeal in any given year, yet the majority of those who do file receive at least some reduction
3. Cook County Board of Review, Annual Report: Residential appellants at the Cook County Board of Review receive reductions in roughly 50 to 55 percent of completed cases
4. California State Board of Equalization, Proposition 13 Overview: Under Proposition 13, assessed value is locked at purchase price and can only increase by 2 percent annually unless there is a change of ownership or new construction; standard annual appeal filing period is July 2 through November 30
5. Texas Comptroller of Public Accounts, Property Tax Assistance Division: Over 50 percent of all property tax protests filed in Texas result in a value reduction; Tax Code Section 41.43 prohibits the ARB from raising a value above the district's original assessed value in a homeowner-initiated protest; 2023 Senate Bill 2 increased the homestead exemption to $100,000
6. Tax Foundation, Property Taxes by State: New Jersey effective residential property tax rate is approximately 2.23 percent; Illinois approximately 1.97 percent; national average near 1.1 percent as of 2020-2023 data; California approximately 0.75 percent; Hawaii approximately 0.32 percent
7. New York State Office of Real Property Tax Services (ORPTS), Assessment Administration: Grievance Day is set at the municipal level; most towns set it as the third Tuesday of May; ORPTS publishes a directory of assessment offices
8. Florida Department of Revenue, Property Tax Exemptions: Florida homestead exemption removes the first $25,000 of assessed value from all taxes and another $25,000 from non-school taxes; TRIM notice deadline for appeals is 25 days from mailing
9. ProPublica, The Tax Divide (Cook County investigation): In Cook County, commercial and higher-value residential properties were more likely to receive successful appeals; primary driver was evidence quality and professional preparation
10. Georgia Department of Revenue, Property Tax Division: Georgia administrative appeal process allows a Board of Equalization hearing; homeowners have 45 days from assessment notice to file an appeal
11. New Jersey Division of Taxation, Property Tax Appeals: New Jersey property tax appeal deadline to County Tax Board is April 1; state has one of the highest effective property tax rates at approximately 2.23 percent