Before you file a single form, one rule has already shaped your property tax appeal — and almost no one tells homeowners about it. It is called the presumption of correctness, and in nearly every state it means the assessor’s number is treated as right until you prove otherwise. Walk into a hearing, say “my taxes feel too high,” and offer nothing else, and you lose — not because the value was fair, but because the burden was on you and you did not carry it.
That is the quiet machinery behind most denied appeals. But the rule is not the same everywhere, and the exceptions are exactly the kind of thing a contingency-fee company would rather you not know. A short list of states — California, Texas, and Indiana among them — flip the burden onto the assessor in ordinary homeowner cases, or make the assessor earn the presumption before it applies at all. Knowing which side of that line your state sits on tells you the single most useful thing before you appeal: how much evidence you actually need to bring.
| State | Who must prove the value? | Standard of proof | The detail that matters |
|---|---|---|---|
| California | The assessor, for owner-occupied homes | Preponderance | §167 flips the presumption to your side on an owner-occupied single-family home — if you gave the assessor the information the law requires |
| Texas | The appraisal district | Preponderance — or clear and convincing | The district always bears the burden (§41.43); file a certified appraisal (home ≤ $1M), or if your value was cut last year, it rises to clear and convincing — and if the district can’t meet it, you win |
| Indiana | The assessor, if the value jumped | Preponderance | Any assessment increase over 5% year-over-year shifts the burden to the assessor to justify it (Ind. Code §6-1.1-15-20) |
| Florida | You — but the appraiser must earn it | Preponderance | The appraiser must first prove it followed proper appraisal method (§194.301); fail, and the presumption of correctness disappears |
| New York | You (two-step) | Substantial evidence, then preponderance | A “presumption of validity” attaches; you overcome it with substantial evidence, then the whole record is weighed by preponderance (RPTL Art. 7) |
| New Jersey | You | “Cogent evidence” to overcome | The presumption is strong: it takes evidence “definite, positive and certain” to rebut (Pantasote, 1985) — and the burden stays with you the whole way |
| Illinois | You | Preponderance (value); clear and convincing (inequity) | Proving overvaluation is preponderance; proving unequal assessment against comparable properties requires the higher clear-and-convincing bar |
| Ohio | You | Preponderance | The assessment is presumed valid before the Board of Revision; competent evidence of a different value shifts the picture |
| Pennsylvania | You | Preponderance | The county’s assessment is prima facie valid; you must produce credible market-value evidence to rebut it |
| Massachusetts | You | Preponderance | As the abatement applicant you carry the burden before the Appellate Tax Board, which presumes the assessment valid |
| Georgia | You | Preponderance | You must show the value exceeds fair market value; the assessment is presumed correct at the Board of Equalization |
| North Carolina | You | Competent, substantial evidence | A strong presumption of correctness applies; you must produce competent evidence that the value substantially exceeds true value |
| Michigan | You | Preponderance | The petitioner bears the burden before the Board of Review and Tax Tribunal to prove true cash value |
| Minnesota | You | Preponderance | The assessment is prima facie valid; you carry the burden to show the estimated market value is too high |
Read the second column first. In most states the honest answer is “you do” — which is not a reason to skip the appeal, but a reason to bring evidence. In California, Texas, and Indiana, the law does part of the work for you.
The presumption of correctness is a procedural default, not a judgment that your assessment is accurate. It just decides who has to move first.
Courts and boards start from the idea that a government office did its job correctly — that the assessor followed the law and reached a defensible value. New Jersey’s Supreme Court put the principle plainly in Pantasote Co. v. City of Passaic (1985): in tax matters it is presumed that governmental authority has been exercised correctly. Practically, that means the assessor does not have to defend the number first. You do. The presumption is why the most common way to lose an appeal has nothing to do with being wrong on the merits — it is showing up with a complaint instead of evidence.
The word that matters, though, is rebuttable. “Presumed correct” is not “probably correct,” and it is certainly not “correct.” It is a starting position that ordinary evidence knocks over. In most states the presumption falls the moment you put credible market evidence on the table: a recent arm’s-length purchase price, a set of three to five well-documented comparable sales, or proof of a factual error in the property record — wrong square footage, a demolished outbuilding still on the card, a finished basement that isn’t. None of that requires an attorney or an appraiser. It requires bringing the file the assessor didn’t.
Once you decide to bring evidence, the next question is how persuasive it must be. In most places the bar is lower than people fear.
The default standard for a value appeal is a preponderance of the evidence — more likely than not, a 51% tilt. You are not proving your value beyond a reasonable doubt; you are simply being more persuasive than the assessor’s file. For an overvaluation case backed by real comps or a purchase price, that is a bar an organized homeowner clears routinely.
Two wrinkles are worth knowing. First, Illinois splits the standard: proving your home is worth less than its assessed value is judged by preponderance, but arguing you were assessed unequally relative to comparable properties — a different and powerful theory — requires the tougher clear and convincing standard, with at least three comparable assessments to back it. Second, some states dress the same idea in stricter-sounding language: New Jersey requires “cogent evidence” that is “definite, positive and certain” to overcome the presumption, and New York makes you clear an initial “substantial evidence” threshold before the record is weighed on the merits. The labels differ; the practical instruction is the same everywhere — bring specific, documented value evidence, not adjectives.
In a handful of states the legislature has decided the homeowner should not have to carry the whole load. These are the exceptions the mailers never mention.
California is the clearest example. Revenue & Taxation Code §167 creates a rebuttable presumption in favor of the taxpayer for an owner-occupied single-family home — provided you supplied the assessor with the information the law requires. When it applies, the assessor carries the duty of rebutting that presumption with evidence supporting the assessment. The burden the rest of the country puts on you, California puts on the county.
Texas goes even further and does it for everyone. Under Tax Code §41.43, the appraisal district — not the owner — bears the burden of establishing value by a preponderance of the evidence at the Appraisal Review Board. And the statute has teeth: if your home is valued at $1 million or less and you file a certified independent appraisal at least 14 days before the hearing, or if your value was lowered the prior year, the district’s burden rises to clear and convincing evidence — and if it fails to meet that bar, the protest is decided in your favor by law.
Indiana ties the shift to how much your bill moved. Under Ind. Code §6-1.1-15-20, when an assessment increases by more than 5% over the prior year’s value, the assessor bears the burden of proving the increase is correct. A big jump you can’t explain is exactly the case the statute makes the county defend.
Florida sits in between. The property appraiser’s assessment is presumed correct — but only if the appraiser first proves, by a preponderance, that the value was reached by following Florida’s statutory methodology and professionally accepted appraisal practices (§194.301). Show that the appraiser cut a corner on method, and the presumption evaporates before you ever have to argue your own number. After that, the challenger carries a preponderance burden on value — but the appraiser had to earn the home-field advantage first.
Editor’s Note
The presumption of correctness is a procedural coin-flip about who speaks first. But to a homeowner reading an intimidating assessment notice, it sounds like the county has already decided and the deck is stacked. That misreading is worth money to someone — it is exactly what makes a “we’ll handle the whole thing” pitch, at 30–50% of your savings, feel safe.
Two facts cut against the fear. The evidence that overcomes the presumption — a purchase price, a few comps, a record correction — is evidence an ordinary owner can assemble in an afternoon. And in California, Texas, and Indiana, the law has already shifted the burden off your shoulders; paying a contingency fee there means renting leverage the statute gave you for free.
Do not let “presumed correct” read as “probably correct.” It is a starting line, not a finish line — and in a few states you begin the race ahead.
The burden question isn’t academic. It tells you what to pack for the hearing.
If you are in a presumption state — which is most of them — assume nothing is handed to you and come heavy: your strongest single exhibit (a recent purchase price if you have one), three to five genuinely comparable sales, and photos or documents for any condition or record problem. That package is what turns “presumed correct” into “overcome.” If you are in a burden-shift state (California, Texas, Indiana) or a burden-earning state (Florida), you have a second lane: you can win by exposing what the assessor can’t support — a value with no methodology behind it, an unexplained double-digit jump — though bringing your own evidence anyway only makes the case stronger.
Either way, the mechanics are less daunting than the presumption makes them sound. The hearing itself is short and informal, the first level of appeal is free or nearly free in most states, and the math on doing it yourself is far more favorable than a contingency contract implies — especially in the states where the burden was never yours to begin with. Knowing who has to prove what doesn’t just settle a legal technicality. It tells you, before you spend an hour on the paperwork, exactly how strong your case already is.
No. It is a procedural rule about who has to present evidence first, not a finding that your assessment is accurate. The presumption is rebuttable — it decides the starting position, and ordinary evidence (a purchase price, comparable sales, a record error) overturns it. Treat “presumed correct” as “you go first,” not “you lose.”
Yes, if you have evidence. The standard in most states is a preponderance — more likely than not, a 51% tilt — not proof beyond doubt. An overvaluation case backed by three to five solid comps or a recent purchase price clears that bar routinely. Overassessment is common, and the homeowners who lose usually lose for bringing a complaint instead of a file, not because the burden was on them.
A few states do, under specific conditions. California (§167) shifts it for owner-occupied single-family homes when you’ve supplied the required information. Texas (§41.43) puts it on the appraisal district in every protest, and raises the standard to clear and convincing if you file a certified appraisal on a home valued at $1 million or less. Indiana (§6-1.1-15-20) shifts it whenever an assessment rises more than 5% in a year. Florida (§194.301) makes the appraiser prove it followed proper method before its assessment is presumed correct at all.
The same evidence in every state: a recent arm’s-length purchase price for the home, three to five recent comparable sales of similar nearby properties, and documentation of any factual errors in the assessor’s record (wrong square footage, features that no longer exist, mis-stated condition). You do not need an attorney or a professional appraisal to meet a preponderance standard — you need specific, documented value evidence rather than opinion.
Three national comparisons pair naturally with this one: what your appeal actually costs (usually the filing fee, not a percentage of your win), when your state’s window opens and closes, and whether you keep paying the bill while the case runs. Who carries the burden of proof is the fourth piece — the one that tells you, before you start, how much evidence you need to win.