Property tax protest success rate statistics: what the data actually shows

Last updated 2026-07-09

What is the overall property tax protest success rate?

If you file and show up with evidence, you have a better than coin-flip chance of getting money back. The catch is that outcomes vary hard by location, and there is no single federal database tracking them. The numbers come from state comptroller offices, county appraisal districts, and academic research. The picture is patchwork, but it points one direction.

Most of the good data lives in Texas. A Texas A&M Real Estate Center analysis of appraisal data found that owners who formally protested received a reduction in roughly 55 to 65 percent of residential cases resolved through informal agreements, and the reduction averaged about 4 to 8 percent of the original assessed value ^[1]. Texas is the largest single dataset we have because the state requires appraisal districts to publish protest counts and outcomes every year.

Outside Texas, state-level data gets thin. Cook County, Illinois publishes Board of Review outcomes. New York City's Tax Commission releases annual statistics. A Lincoln Institute of Land Policy report on property tax administration found that appeal rates and success rates vary so widely by jurisdiction that national averages are not reliable benchmarks, though the places that did report showed owner-prevailing rates between 40 and 70 percent of filed appeals ^[2].

Here is the part almost nobody acts on. The National Taxpayers Union estimates fewer than 5 percent of eligible homeowners appeal their assessment in any given year, which means the overwhelming majority of potential savings go unclaimed ^[3]. Most people do not file. The ones who do, and who bring comps, win most of the time.

What do Texas property tax protest statistics show in detail?

Texas is the best-documented state in the country for protest outcomes, and the data is granular enough to actually plan around. The Texas Comptroller requires every appraisal district to submit annual reports through the Property Tax Assistance Division's review program ^[4].

For the 2022 tax year, Texas appraisal districts received about 3.5 million protest filings. Roughly 1.8 million were resolved through informal hearings, meaning the owner met with an appraiser before any formal Appraisal Review Board (ARB) hearing. About 67 percent of those informal resolutions ended in a value reduction. At the formal ARB stage the owner-win rate drops to somewhere near 40 to 50 percent, partly because the cases that reach a formal hearing tend to be the harder ones that could not settle earlier ^[4].

Harris County (Houston) is the largest appraisal district in the state, and it processed over 460,000 protests in 2022. The Harris Central Appraisal District's annual report shows that owners who appeared, in person or virtually, cut their value at a rate roughly 20 percentage points higher than owners who filed and then skipped the hearing ^[5]. That is the most useful number in this article. Showing up beats almost everything else.

Collin County, one of the fastest-growing counties in the country, follows the same pattern. Owners filing in the Dallas-Fort Worth suburbs can review Collin County property tax data and protest procedures through the county appraisal district. Williamson County, northwest of Austin, is another high-growth area where filings have climbed sharply. The Williamson County property tax system processes tens of thousands of protests each year, and the district's own data shows informal settlements running above 60 percent success for residential filers who bring comparable sales.

How do protest success rates compare across major metro areas?

Success rates cluster in the 40 to 65 percent range across most big metros, but the word "success" means slightly different things in each place. Texas counts any reduction. Cook County counts any reduction in classification or value. NYC counts cases where the Tax Commission granted a reduction. Read the table with that in mind.

Jurisdiction	Filing window	Approx. owner success rate	Source / year
Texas (statewide)	April 1 to May 15 (or 30 days from notice)	55-67% informal; 40-50% ARB	TX Comptroller, 2022
Cook County, IL	Various by township	~65% at Board of Review	Cook County Board of Review, 2022
New York City, NY	March 1 to March 15 (Class 1)	~30-40% Tax Commission	NYC Tax Commission Annual Report, 2023
Los Angeles County, CA	July 2 to Nov 30	~45-55% at Assessment Appeals Board	LA County Assessor, 2022
Miami-Dade County, FL	April 1 to April 25	~50-60% at VAB	FL Dept. of Revenue, 2022
Hennepin County, MN	April 1 to April 30	~40-55% at Local Board	MN Dept. of Revenue, 2023

NYC's rate looks low for a reason. Its assessments cover commercial and mixed-use properties at higher rates than most metros, which drags the blended number down. LA County's Assessment Appeals Board handles a smaller share of parcels than Texas ARBs because California's Prop 13 limits reassessment triggers, so the cases that do get filed skew toward high-dollar commercial disputes ^[6]. For LA County property tax appeals, the window runs July 2 through November 30, and the success rate on residential single-family parcels runs higher than that blended commercial figure.

Miami-Dade's Value Adjustment Board (VAB) process is worth a look. Florida law requires the county to refund overpaid taxes within 90 days of a VAB decision, which makes it unusually clean from the homeowner's side ^[10]. See the Miami-Dade property taxes guide for how that filing works.

Does hiring a tax agent or attorney improve your odds?

Probably yes for commercial properties. Probably not enough to matter for most residential ones. That is the honest split.

For a homeowner, the bump from hiring a contingency agent is real but small. Texas A&M Real Estate Center data suggests represented owners land slightly larger reductions, about 1 to 2 percentage points more often than self-represented owners who show up with evidence ^[1]. That is a thin margin. Evidence quality drives the outcome, not who is holding the folder.

Contingency fees for residential appeals usually run 25 to 40 percent of first-year tax savings. Say your bill is $6,000 and you win a 6 percent reduction, saving $360. The agent takes $90 to $144 of it. That is not crazy. It is also not necessary. You can pull five comparable sales from your county assessor's public portal, put them in a simple table, and show up to the informal hearing yourself.

Commercial is a different math problem. The savings are larger, the hearing is more adversarial, and income-capitalization arguments need a licensed appraiser's report. Properties assessed above $1 million are where paying a pro clearly earns its fee.

If you want to run a residential appeal yourself, the TaxFightBack appeal kit walks you through building a comps-based evidence packet, the same approach that produces reductions for the majority of DIY filers.

What evidence actually increases your chances of winning?

Comparable sales are the single strongest predictor of a win. That is not opinion. It is what appraisal review boards are legally required to weigh. Most state statutes set assessed value at fair market value, meaning what a willing buyer would pay a willing seller, and recent arm's-length sales of similar homes are direct proof of that market.

Good comp evidence has a shape. You want sales from the 12 months before the January 1 assessment date (most states use January 1 as the lien date), within about a half-mile in urban areas or two miles in rural ones, similar square footage (within 15 to 20 percent), similar age and condition, and similar lot size. Three to five comps showing a consistent gap between your assessed value and market value is a solid case. One comp is weak. Ten comps are not automatically stronger than five.

Unequal appraisal is a second strong track. Here you show that comparable properties in your neighborhood are assessed lower per square foot than yours. Texas allows this expressly under Tax Code Section 41.43, which states that "a property is appraised unequally if... the appraised value of the property exceeds the median appraised value of a reasonable number of comparable properties appropriately adjusted" ^[7]. Several other states have similar provisions, though few spell it out that plainly.

Some things almost never move a board. Your emotional attachment to the house. What you paid for it more than a year ago. Your neighbor's opinion. A Zillow estimate with nothing printed behind it. Boards want formal printed comparables from the MLS or public record, ideally in a side-by-side adjustment table.

How much do winning protestors actually save?

The median residential win is modest but real, and it repeats every year until the next reassessment. In Texas, PTAD data shows the average reduction in assessed value for informally resolved residential protests ran roughly $28,000 to $35,000 in recent years, worth about $560 to $700 a year at a 2 percent effective tax rate ^[4]. That is real money for a few hours of work.

In Cook County, the Civic Federation's analysis of Board of Review data found average assessed value reductions of roughly $19,000 to $25,000 for single-family homes in recent cycles. Because Illinois applies assessments against a percentage of market value before the multiplier and rate hit, the actual bill savings swing a lot by municipality ^[8].

In New York City, Class 1 residential properties (one-to-three family homes) that win at the Tax Commission see reductions averaging around $800 to $1,200 per year, per the NYC Tax Commission's annual statistical reports ^[9].

The ceiling depends entirely on how far off your assessment is. A $50,000 overassessment in a county with a 1.5 percent effective rate saves you $750 a year, every year until the next reassessment cycle. In high-tax states like New Jersey or Illinois, the same overassessment produces proportionally larger savings. And it compounds: most jurisdictions reset assessed values on a three-to-five year cycle, so one win locks in savings for multiple years.

High-value markets raise the stakes further. Santa Clara property tax and San Mateo County property tax assessments can generate five-figure annual savings from a single successful appeal on a modestly overassessed home.

What factors predict whether a protest will succeed?

Three variables come up again and again. Evidence quality is first. Showing up is second. The size of the overassessment relative to market value is third, because boards grant reductions more readily when the gap is large and obvious, and tend to split the difference when you are fighting over a smaller margin.

Presentation carries more weight than people expect. An assessor working through 80 informal hearings in a day responds to organized, printed evidence with a clear bottom line. Hand over five printed comps and a one-page summary that says "my assessed value is $485,000, but the average adjusted sale price of comparable homes in my neighborhood is $432,000," and you get taken seriously. Walk in with a Redfin printout and a feeling, and you do not.

Timing matters too. Most jurisdictions let you negotiate informally before the formal hearing date. These informal conferences win more often than formal hearings for two reasons: the assessor has more room to settle, and you are talking to a person instead of a three-member panel. Ask for the informal option first. Many districts offer it automatically but bury it.

The local fiscal climate has a small effect. Counties under budget pressure to hold values high are marginally more resistant, but the legal standard does not bend. An assessor who denies a well-documented comp-based protest is building a case they might lose at the formal hearing or in court, and most would rather not.

What happens if your protest is denied?

A denial at the informal stage is not the end. Every state has at least one more appeal level, and most have two or three.

The usual path runs informal hearing, then formal administrative board hearing (ARB in Texas, Board of Review in Illinois, Value Adjustment Board in Florida, Assessment Appeals Board in California), then binding arbitration or district court. Each step costs more time, and the court step costs money. For most residential owners the formal administrative hearing is the right place to stop. If you lose there on a home worth under $500,000, going to court rarely pencils out.

Texas offers a streamlined binding arbitration option under Tax Code Chapter 41A for properties at or below $5 million in appraised value (or $1 million for non-homestead residential), where a single arbitrator decides the case for a filing fee of $500 to $1,500 ^[7]. The state returns the fee if the owner wins, which makes it realistic for mid-value disputes. Arbitration owner-win rates in Texas have historically run around 60 percent per the Comptroller's data, though the sample is much smaller than ARB hearings ^[4].

California adds a wrinkle. If the Assessment Appeals Board denies your claim, you can file in Superior Court, but you have to pay the disputed taxes first and then seek a refund. That is a real cash flow hit. For Contra Costa County property tax and other California county appeals, check the specific county board's published rules before you decide to escalate.

How do success rates differ for residential vs. commercial properties?

Raw success rates run close, roughly 45 to 65 percent in most markets, but commercial appeals are a different game entirely. The process is longer, the evidence bar is higher, and the savings potential is orders of magnitude larger ^[2].

Commercial income-producing property gets valued through the income approach: the assessor estimates net operating income and capitalizes it at a market rate. Challenging that takes a certified MAI appraisal, NOI documentation, and knowledge of current cap rates. A self-represented commercial owner walking into an ARB hearing against an experienced district appraiser is outgunned.

The Lincoln Institute of Land Policy's research found that commercial owners appeal at a much higher rate than residential owners, likely because the stakes justify the cost ^[2]. Large commercial landlords often appeal every cycle as standing policy.

In high-value markets like Manhattan or San Francisco, law firms and appraisal firms dominate the process. The NYC Tax Commission reports that professionally represented properties account for the majority of value reductions granted, partly because those owners bring better documentation and partly because those properties tend to carry larger absolute overassessments worth fighting ^[9].

For NYC property tax appeals, the process splits by class. Class 1 (small residential) runs differently from Class 2 and Class 4 (larger residential and commercial), and the deadlines and evidence requirements shift by class.

Why do most homeowners not protest even when they could win?

The gap between who could win and who actually files is huge. In most jurisdictions, between 2 and 7 percent of property owners file any kind of appeal in a given year, even though research suggests a far higher share of assessments carry a correctable overvaluation.

The reasons fall into three buckets. People do not know they can. Many receive their notice, feel vaguely annoyed, and assume the process is too complicated or that fighting the government is pointless. The deadline is short and easy to blow. Texas gives 30 days from the notice date, or May 15, whichever is later ^[7]. Most states give 30 to 90 days, and life gets in the way. And people overestimate the difficulty. The informal hearing at most county appraisal offices is genuinely informal: you sit across from an appraiser, show your comps, and have a conversation that runs 15 to 30 minutes.

The National Taxpayers Union's estimate that fewer than 5 percent of eligible homeowners appeal in any given year lines up with state data from Texas, Illinois, and New York ^[3]. If even 20 percent of homeowners with overassessments filed protests with basic comps, the boards would drown and the aggregate savings to homeowners would run into the billions a year.

Before protesting, it helps to know what you are actually challenging. Reviewing property tax taxation fundamentals frames the target: the assessed value, not the tax rate.

What are realistic expectations going into a property tax protest?

Here is what the data says to expect, without the sugar. File and show up with comparable sales that genuinely support a lower value, and your odds of some reduction run roughly 55 to 65 percent at the informal stage in most well-documented jurisdictions. File but skip the hearing, or show up with no printed evidence, and those odds fall hard, probably into the 20 to 35 percent range based on Harris County no-show outcomes ^[5].

The average residential reduction, when granted, runs 3 to 8 percent of assessed value in active protest markets. Outlier cases in badly overassessed markets hit 15 to 25 percent, but those are not typical. Budget for the middle.

The process takes time. Filing to informal hearing is usually 60 to 120 days. Formal hearings can add another 3 to 6 months. Texas requires ARB results within 45 days of the hearing under Tax Code Section 41.47 ^[7].

The TaxFightBack appeal kit is built around the comps-based approach that drives most successful informal settlements, so you get printable evidence packets without hiring anyone.

The data says filing is worth it. The group of homeowners who file with solid evidence and still lose is smaller than the group who never file and wonder what they left on the table. A few hours pulling public sales records, printing a clean packet, and sitting through a short hearing produces real savings for most people who try it.

Frequently asked questions

What percentage of property tax protests are successful?

In the best-documented states, roughly 55 to 67 percent of informal residential protests get some reduction. Texas Comptroller data for 2022 shows 67 percent of informally resolved cases received a value decrease. Formal hearing success rates run closer to 40 to 50 percent because the easier cases settle before reaching that stage. Rates in other states generally fall between 40 and 65 percent.

Is it worth filing a property tax protest on my own?

For most residential homeowners, yes. Filing is free in every state. The main cost is a few hours pulling comparable sales from public records. Texas A&M Real Estate Center data shows self-represented owners who show up with comps win at rates within about 1 to 2 percentage points of professionally represented owners. For homes under $1 million in assessed value, doing it yourself is the sound choice.

What is the average property tax reduction from a successful appeal?

In Texas, the average assessed value reduction from a successful informal hearing ran roughly $28,000 to $35,000 in recent years, worth about $560 to $700 annually at a 2 percent effective rate. In Cook County, Illinois, successful Board of Review appeals for single-family homes averaged $19,000 to $25,000 in value reduction. NYC Tax Commission reductions for Class 1 properties average around $800 to $1,200 in annual tax savings.

How many people actually appeal their property tax assessment?

Fewer than 5 percent of eligible homeowners appeal in most jurisdictions in a given year, per the National Taxpayers Union. Texas, with the most active protest culture, saw roughly 3.5 million protests in 2022 against about 16 million taxable parcels, a rate near 22 percent. That is unusually high. Most states run well below 10 percent participation.

Does hiring a property tax agent improve your chances of winning?

Modestly for residential, significantly for commercial. Texas data shows represented residential owners win at rates roughly 1 to 2 percentage points higher than prepared self-represented owners. Contingency fees of 25 to 40 percent of first-year savings eat most of that margin on smaller residential bills. Commercial properties over $1 million, where income-approach valuation is contested, are where professional help clearly earns its cost.

What evidence gives me the best chance of winning a property tax appeal?

Comparable sales are the strongest evidence. You want three to five arm's-length sales within 12 months of the January 1 assessment date, similar square footage and condition, and proximity within half a mile in urban areas. Print them in a clean side-by-side table with adjustments noted. Unequal appraisal evidence, showing neighboring similar homes assessed lower per square foot, is a strong second track, available in most states including Texas under Tax Code Section 41.43.

What happens if I lose my property tax appeal?

You can escalate. Most states offer a formal administrative board hearing after an informal denial. After that, you generally have binding arbitration (Texas allows this for properties up to $5 million under Tax Code Chapter 41A, with a refundable $500 to $1,500 filing fee if you win) or district court. Most residential owners stop at the formal administrative hearing; the economics of court only work for large overassessments.

How long does the property tax appeal process take?

Filing to informal hearing resolution is typically 60 to 120 days in most jurisdictions. A formal administrative hearing adds another 3 to 6 months. Texas law requires ARB decisions within 45 days of the hearing under Tax Code Section 41.47. You generally owe the undisputed portion of your tax bill on the normal due date while the appeal is pending; confirm your county's rules before assuming a protest suspends payment.

Do commercial properties have higher or lower protest success rates than residential?

Raw success rates run close, typically 45 to 65 percent in well-documented markets. The differences are process complexity and stakes. Commercial appeals need income-approach analysis and often a licensed MAI appraisal. The Lincoln Institute of Land Policy found that commercial owners appeal at much higher rates than residential owners because the dollar savings justify professional fees. Self-representing on a large commercial property is genuinely risky.

Can I protest my property taxes if I just bought the house?

Yes, and your purchase price can be your best evidence. A recent arm's-length sale is direct market value proof. If you paid $380,000 and the assessment came in at $430,000 the same tax year, that gap is documentable and persuasive. Make sure the sale qualifies as arm's-length, meaning not a foreclosure, estate sale, or related-party transaction. Banks and assessors treat those as unreliable market signals.

What is the property tax protest deadline in most states?

Deadlines vary a lot. Texas gives 30 days from the notice date or May 15, whichever is later. California's general window runs July 2 through November 30. Cook County, Illinois deadlines vary by township, typically late October to late November. Florida's VAB petitions are generally due by September 18. Missing the deadline waives your right for the entire year, so check your county's assessor or appraisal district website the moment your notice arrives.

Does winning a property tax appeal affect my taxes in future years?

In most states, yes. The reduction applies to the current year and carries forward until the next reassessment. In states with cyclical reassessments every three to five years, you lock in the lower base value for the whole cycle. In California under Prop 13, your base year value stays fixed until a change of ownership or new construction, so annual appeal activity is lower but each win has lasting impact.

Are informal hearings really informal, or should I expect a formal proceeding?

Genuinely informal in most counties. At a Texas informal hearing you sit with one appraiser, show your evidence, and negotiate. Most last 15 to 30 minutes. Formal ARB hearings are more structured: a panel of three board members, sworn testimony, a formal record. The informal stage settles more often and stresses less. Pursue the informal option first; most districts offer it but do not always make it obvious in their notices.

How do I find comparable sales to use as evidence in my appeal?

Start with your county assessor's public portal, which shows recent sales in most jurisdictions. Zillow, Redfin, and Realtor.com also show sold prices, though boards weight county public records more heavily. Look for sales within 12 months of January 1, similar square footage (within 15 to 20 percent), similar age, condition, and lot size, within half a mile in urban areas. Print the results with addresses, sale dates, prices, and key specs in a table.

Sources

1. Texas A&M Real Estate Center, 'Texas Property Tax Protests: Who Files and What Happens': Texas property owners who formally protested received a reduction in roughly 55 to 65 percent of residential cases resolved through informal agreements, with reductions averaging 4 to 8 percent of original assessed value
2. Lincoln Institute of Land Policy, property tax administration research: Jurisdictions that reported appeal outcomes showed owner-prevailing rates between 40 and 70 percent; commercial owners appeal at significantly higher rates than residential owners
3. National Taxpayers Union Foundation, property tax appeal research: Fewer than 5 percent of eligible homeowners appeal their assessment in any given year
4. Texas Comptroller of Public Accounts, Property Tax Assistance Division, Annual Reports: Texas received approximately 3.5 million protest filings for 2022; 67 percent of informally resolved cases received a value decrease; arbitration owner-win rates run approximately 60 percent
5. Harris Central Appraisal District, Annual Report: Owners who appeared at hearings reduced their value at a rate roughly 20 percentage points higher than owners who filed but did not appear
6. Los Angeles County Office of the Assessor, Assessment Appeals information: LA County Assessment Appeals Board success rates for residential single-family parcels run approximately 45 to 55 percent; Prop 13 limits reassessment triggers, concentrating appeals in commercial disputes
7. Texas Tax Code, Chapter 41 and Chapter 41A (Vernon's Texas Statutes): Section 41.43 allows unequal appraisal protests; Chapter 41A provides binding arbitration for properties at or below $5 million; Section 41.47 requires ARB decisions within 45 days; protest deadline is 30 days from notice or May 15
8. Civic Federation, Cook County Property Tax reports: Average assessed value reduction for Cook County single-family homes at Board of Review was roughly $19,000 to $25,000 in recent cycles
9. NYC Tax Commission, Annual Report: NYC Class 1 residential properties that win at the Tax Commission see annual tax reductions averaging around $800 to $1,200; professionally represented properties account for the majority of value reductions granted
10. Florida Department of Revenue, Value Adjustment Board procedures: Florida law requires counties to refund overpaid taxes within 90 days of a VAB decision; Miami-Dade VAB residential success rates run approximately 50 to 60 percent