Deadline for protesting property taxes: state-by-state guide

Last updated 2026-07-09

Why does the protest deadline matter so much?

Property tax deadlines are jurisdictional cutoffs, not suggestions. Once the window closes, the assessed value locks in for the entire tax year. You pay taxes on that number whether it's accurate or not.

Most county appraisal districts and boards of review have zero discretion to accept a late filing. The Texas Tax Code, for example, says a property owner "is entitled to protest" only if the protest is filed "before the deadline." ^[1] Miss it, and the door is legally shut until next year's notice.

The money is real. A $50,000 overassessment on a home in a jurisdiction with a 2% effective tax rate costs $1,000 a year. Miss two deadlines before you catch it, and that's $2,000 gone with no recourse. Getting the date right is the single most important step in any appeal. Everything else is optional. This is not.

If you want the wider playbook once you've locked in the date, our how to appeal property taxes guide walks through the evidence that actually wins hearings.

When is the property tax protest deadline in each state?

There is no single national deadline. Every state sets its own window, and some hand it down to counties. The trigger is almost always the mailing date of the assessment notice, not a fixed calendar date. That trips up a lot of homeowners.

Below is a state-by-state reference for the most commonly asked jurisdictions. Verify with your local assessor before filing, because counties in some states (New York and Illinois especially) run their own calendars on top of the state rules. ^[2]

State	Protest / Appeal Deadline	Trigger / Notes
Texas	May 15 OR 30 days after notice, whichever is later	Texas Tax Code §41.44 [1]
California	Nov 30 (most counties) or 60 days after notice	Assessment Appeals Board; some counties use Sept 15 [3]
Florida	25 days after TRIM notice mailing (typically Sept)	Value Adjustment Board; TRIM sent ~Aug 15 [4]
New York (NYC)	March 1 (Tax Commission); varies by borough	Tax Commission; outside NYC varies by county [5]
Illinois (Cook County)	Varies by township, 30 days after publication	Cook County Assessor publishes triennial schedule [6]
Georgia	45 days after assessment notice	O.C.G.A. §48-5-311
Pennsylvania	Varies by county; typically Aug 1 or 30 days after notice	Local county board of assessment [7]
Ohio	March 31 of the tax year	Ohio Rev. Code §5715.19 [9]
Michigan	July 31 (Michigan Tax Tribunal small claims)	Or 35 days after assessment notice, whichever is later
Colorado	June 8 (odd years, reassessment); 30 days after notice	Colorado Div. of Property Taxation [8]
North Carolina	End of appeals period set by county (usually 30 days)	County Board of Equalization
Virginia	Varies by locality; often April 1 to June 1	Local assessor sets the window
Washington	30 days after assessment notice or July 1, whichever is later	County Board of Equalization
Arizona	60 days after assessment notice (Form DOR 82130)	A.R.S. §42-16105
Minnesota	April 30 (Local Board of Appeal) OR petition to Tax Court by April 30 following abstract	Minn. Stat. §278.01 [11]

Watch for the pattern in states that reassess on a fixed cycle. Colorado runs every two years. Cook County, Illinois runs every three. Those states tie their windows to publication dates, not individual mailings, so the clock can start even if nothing hits your mailbox. Check the county assessor's website in reassessment years. ^[6]

Texas homeowners: the May 15 anchor is firm, but the 30-day-after-notice rule often pushes it later. If your appraisal district mailed the notice on April 20, your deadline is May 20, not May 15. Take the later date every time. ^[1]

What happens if you miss the property tax protest deadline?

Miss the deadline in most jurisdictions and you forfeit the right to challenge that year's assessment. The value stands. You owe taxes on it. No appeal, no exception for a busy month, no retroactive fix.

A few states carve out narrow escape hatches. Texas Tax Code §41.411 lets you file a late protest if you were never sent a required notice, but you carry the burden of proving you didn't receive it. ^[1] Florida's Value Adjustment Board can accept a late petition when the petitioner shows "good cause," and it rarely grants that for a simple oversight. ^[4]

Ohio runs one of the more flexible systems. Under Ohio Rev. Code §5715.19, you can file a complaint during a three-year complaint period based on a change in the property's value or condition, not only in the initial notice year. ^[9] That is not a universal workaround, but it does hand Ohio owners a second shot if a neighbor's comparable sale surfaces after the deadline.

Here's the honest version: do not plan around late exceptions. Build a calendar reminder the moment your notice arrives.

How do you find your exact deadline from your assessment notice?

Your assessment notice should print the deadline right on it. Look for "last day to appeal," "deadline to file a protest," or "petition must be filed by." In Texas, the county appraisal district notice puts the protest deadline in a box near the top of page one.

No date on the notice? Not sure when it mailed? Call the county assessor or appraisal district directly. Ask two things: what date the notice was mailed, and what the official protest deadline is for that notice. Get the name of the person you talked to. Write it down.

Some counties post assessment mailing dates on their websites. The Travis County (Austin) Appraisal District publishes mass mailing dates in the spring. The Bexar County Appraisal District in San Antonio posts its protest deadline on its homepage during protest season. ^[12] If you own in Bexar County, our full guide to the bexar county property tax protest lays out the exact steps.

One more thing. The mailing date usually triggers the clock, not the day you opened the envelope. Travel for two weeks and pick up mail late, and your deadline was already running while you were gone.

What is the process for filing a property tax protest before the deadline?

The mechanics shift by state, but the core steps hold almost everywhere.

Start with the official form. In Texas it's Form 50-132 (Notice of Protest) from your county appraisal district. In Florida it's Form DR-486 filed with the county Value Adjustment Board. In California you file a written application with the county Assessment Appeals Board. Most forms sit on the assessor's website as PDFs.

Next, submit before the deadline. You can usually file by mail (postmark counts in most states), in person, or online. Texas appraisal districts have to accept online protests through their portal or the state e-file system. ^[1] Keep proof: a certified mail receipt, a portal confirmation number, or a date-stamped copy from the clerk's counter.

Then gather evidence. Filing the form preserves your rights before your evidence package is done. The hearing usually lands weeks or months after the filing deadline, which gives you time to pull comparable sales, photograph condition problems, and order an independent appraisal if you want one. For a step-by-step breakdown of what evidence actually moves the needle, the TaxFightBack DIY appeal kit helps you organize comps and condition arguments before the hearing.

Last, know your hearing options. Many counties offer an informal review before the formal hearing. In Texas you can meet with an appraiser and often settle before ever facing the Appraisal Review Board. Take the informal meeting. It costs nothing, and most disputes end there.

Can you get an extension on the property tax protest deadline?

Rarely, and never on demand. Extensions are not built into property tax systems the way they are for income tax returns.

Texas is one of the few states with a defined mechanism. A property owner or their agent can request a one-time 15-day extension from the Appraisal Review Board, but the request has to be in writing before the original deadline expires. ^[1] That extends the time to file the protest form, not the hearing itself.

Some states toll deadlines in declared disaster areas. After Hurricane Harvey in 2017, the Texas Comptroller issued guidance letting affected counties extend protest periods. California has a similar provision under Revenue and Taxation Code §170 for counties under a disaster declaration. ^[3] These are formal and rare, not something you invoke for personal reasons.

If you genuinely missed the deadline because of a documented problem, like a hospitalization or a mailing error by the assessor, file a late protest anyway and attach a written explanation with supporting documents. Some boards will hear you informally. They may have no legal duty to, but a sympathetic member has discretion in some jurisdictions. It's a long shot. A letter costs nothing.

How early should you start preparing your protest?

Start the day your notice arrives. Texas notices typically mail in April. California appeal season for most counties runs through November, with notices arriving over the summer. Florida TRIM notices hit mailboxes around mid-August, and the 25-day window closes fast. ^[4]

The minimum you need to file is the form itself. You can file a timely protest with nothing more than "I disagree with the assessed value" as your reason. That locks in your rights while you build the case. Do not wait for evidence to file.

Give yourself two to three weeks to pull comparable sales from county public records, check the property record card for errors (square footage, bedroom count, condition class), and document physical problems. An independent fee appraisal takes four to six weeks and runs $300 to $600 in most markets, so if you want one, order it the day you see the notice.

Ramsey County, Minnesota homeowners: the local board of appeal and equalization meets in the spring, and the April 30 petition deadline to the Tax Court follows shortly after. ^[11] Our ramsey county property tax guide covers the local calendar. Fort Bend County, Texas follows the standard appraisal district schedule with May 15 as the anchor. Our fort bend county property tax page covers the FBCAD portal and informal hearing process in detail.

What if your property is in a state that reassesses infrequently?

In states like Illinois (triennial reassessment in Cook County) and California (where Prop 13 limits reassessment to purchase or new construction), your chance to protest comes around less often and often ties to a published schedule instead of an individual mailing. ^[3][6]

In California, a change of ownership triggers a reassessment and a fresh notice, which resets the 60-day appeal clock. Buy a home, think the post-purchase value is too high, and that notice date is your window. The California State Board of Equalization notes that regular-roll appeal applications must generally be filed between July 2 and November 30, or within 60 days of a supplemental or escape assessment notice. ^[3]

In Cook County, each township is reassessed on a three-year rotating cycle. The Cook County Assessor publishes the schedule, and owners have 30 days after their township's notice of assessment is published to file an appeal. ^[6] Miss that 30-day window and you can still file with the Cook County Board of Review after the Assessor's final ruling, typically within 30 days of that publication. That's a second bite at the apple worth knowing about.

The move in any infrequent-reassessment state is simple: watch the assessor's publication calendar, more than your mailbox.

Do property tax protest deadlines differ for commercial property?

The statutory deadlines are usually identical for residential and commercial property in a given jurisdiction. The complexity of the process is where they split.

Commercial owners often need income-approach or cost-approach appraisals rather than a handful of comparable sales. That evidence takes longer to build. If your commercial protest deadline is May 15 in Texas and a proper income-approach analysis needs six weeks, you start in late March.

Some jurisdictions give commercial owners a longer informal settlement window because the valuations are harder to resolve fast. In Harris County (Houston), large commercial accounts often move through a multi-step informal process before the formal ARB hearing. The filing deadline stays the same as any other property: May 15 or 30 days after notice. ^[1]

Own commercial property across multiple counties or states? Deadline tracking gets messy quickly. A spreadsheet with each property's county, notice-mail date, and computed deadline, reviewed weekly from March through July, is the floor for a working system.

What is the difference between a protest, an appeal, and a hearing?

These words get swapped around, but they mark different steps.

A protest (common in Texas and a few other states) is the initial filing that opens your case. Filing it by the deadline is the gate. No timely protest, nothing else happens.

An appeal is the broader term most other states use for that same initial filing. You file an appeal application with the county board of review, assessment appeals board, or a similar body.

A hearing is what comes after your protest or appeal gets accepted. The board sets a date for you to present evidence. The hearing is not the deadline-sensitive step. The initial filing is. In Texas, informal hearings with appraisal district staff usually happen before any formal ARB hearing.

Some states use "equalization." The Board of Equalization (California, Washington) or Board of Equalization and Review (North Carolina) hears the appeals. Filing an application with that board by the statutory deadline preserves your rights. The board then sets the hearing date. ^[13]

How does hiring a tax agent affect your deadline obligations?

Hiring an agent, consultant, or attorney does not extend your deadline. They have to file on your behalf before the same cutoff.

In Texas, an agent needs a signed Form 50-162 (Appointment of Agent) on file with the appraisal district before or at the time the protest is filed, or the protest may not count as validly filed by that agent. ^[1] Many contingency firms file in bulk near the May 15 deadline. If the authorization paperwork is not in place, those protests can get rejected.

Representing yourself is genuinely manageable. The forms are public, filing is free in most jurisdictions, and the informal hearing is a meeting, not a court proceeding. The TaxFightBack DIY appeal kit walks through the full filing and hearing process so you keep 100% of any savings instead of splitting them with a firm.

One practical note. File yourself, then decide you want an agent for the hearing, and you can usually add one. The protest is already filed; you designate an agent later for the hearing stage. Check your county's rules on the handoff.

What should you do right now if you are unsure of your deadline?

Take four steps today.

One. Find your most recent assessment notice. The mailing date and deadline should be on it. No notice? Request a copy from the county assessor or pull your account on the online portal.

Two. Check your state's statutory deadline against the notice date. Use the table above as a starting point, then confirm against your state's official assessor or comptroller website.

Three. If you're within 30 days of what you think the deadline might be, file the protest or appeal form now, even with no evidence yet. You can withdraw a protest if you change your mind. You cannot unwind a missed deadline.

Four. Set a recurring calendar reminder for next year. Most notices arrive within the same two-to-four week window each year. If yours comes in April, drop a reminder on March 25 to watch for it.

Missing the deadline costs a full year of overpayment. Filing a timely protest, even a thin one, costs about 20 minutes and a postage stamp.

Frequently asked questions

What is the property tax protest deadline in Texas?

In Texas, the deadline to file a Notice of Protest (Form 50-132) with your county appraisal district is May 15 or 30 days after the appraisal district mailed your notice of appraised value, whichever date is later. This is set by Texas Tax Code §41.44. If your notice was mailed April 20, your deadline is May 20, not May 15.

Can you appeal property taxes after the deadline?

In most states, no. Once the deadline passes, the assessed value is final for that tax year. Texas allows a late protest under §41.411 if you were not sent a required notice, and Ohio allows complaints based on changed conditions during a three-year window. Florida permits late petitions for "good cause" but rarely grants them. Filing late is a long shot; do not plan around it.

What happens if I miss the property tax appeal deadline?

You lose the right to challenge that year's assessment. The value stands and your tax bill is calculated on it with no adjustment. You will need to wait until next year's assessment notice to file a new protest. In most jurisdictions there is no administrative remedy, no exception for oversight, and no ability to get a retroactive reduction.

How do I know when my property tax notice was mailed?

Check the notice itself; most include a "date mailed" or "notice date" field. If you do not have the notice, log into your county assessor's online portal or call the office directly and ask for the mailing date for your account. Get the name of the representative you spoke with. The postmark date starts your deadline clock, not the date you opened the mail.

Is there a property tax appeal deadline in California?

Yes. For most California counties, the regular assessment appeal period runs July 2 through November 30. For supplemental or escape assessments triggered by a change of ownership or new construction, you have 60 days from the mailing date of the supplemental notice. The California State Board of Equalization publishes these rules. Some counties have slightly different windows, so verify with your county assessment appeals board.

What is the property tax appeal deadline in Florida?

Florida's deadline is 25 days after the mailing of the TRIM (Truth in Millage) notice, which county property appraisers typically send in mid-August. That usually puts the deadline in mid-September. You file Form DR-486 with the county Value Adjustment Board. Missing this 25-day window means you cannot challenge that year's assessment through the VAB process.

Can I get an extension on my property tax protest deadline?

Rarely. Texas allows a written request for a one-time 15-day extension before the original deadline, under Texas Tax Code §41.44(b). California's Revenue and Taxation Code §170 allows extensions in declared disaster areas. Most other states have no routine extension mechanism. If a documented hardship or assessor error caused the delay, file late anyway with an explanation; some boards have informal discretion, though not a legal obligation to hear you.

How long do I have to protest property taxes in a typical state?

Most states give between 25 and 90 days from the mailing of the assessment notice. Florida's 25-day TRIM window is among the shortest. Arizona gives 60 days. Texas defaults to 30 days after notice (with a May 15 anchor). California gives up to 60 days on supplemental assessments and a five-month regular window. Always measure from the notice mailing date, not the date you received it.

Do I need evidence before I file a property tax protest?

No. You can file a protest or appeal form with nothing more than a statement that you disagree with the value. Filing preserves your right to a hearing; you build your evidence package afterward. The hearing is typically scheduled weeks to months after the filing deadline, giving you time to gather comparable sales, document condition issues, and obtain an independent appraisal if needed. File first, build the case second.

Does my protest deadline change if I just bought the property?

A purchase can trigger a supplemental assessment notice in states like California, which restarts a new 60-day appeal clock for that supplemental notice. In Texas, if you bought a home after the existing owner already received the notice, the protest deadline from that notice still applies to the current year's value. Check with your appraisal district on whether a new owner can file a protest based on a notice sent to the prior owner.

Are property tax appeal deadlines the same for commercial and residential property?

In most jurisdictions, yes, the same statutory deadline applies to all property types. The complexity of commercial appeals is higher because income-approach or cost-approach evidence takes longer to prepare, but the filing cutoff is identical. Commercial owners with multiple properties in different counties need a tracking system because each county's deadline may differ by weeks.

What is the property tax protest deadline in Cook County, Illinois?

Cook County reassesses each township on a three-year cycle. When your township is reassessed, you have 30 days after the Cook County Assessor publishes your township's assessment to file an appeal with the Assessor's office. You then get a second opportunity to appeal to the Cook County Board of Review within 30 days of the Assessor's final ruling. Check the Cook County Assessor's published township schedule each year.

Can a tax agent file a protest after the deadline?

No. Hiring an agent does not extend the deadline. In Texas, the agent must also have a signed Form 50-162 authorization on file at the time of filing. Contingency firms that miss the deadline on your behalf have no remedy to offer you for that year. If you filed yourself and want to add an agent for the hearing stage, you can typically do so after the filing deadline has passed; the key is that the protest itself was filed on time.

Sources

1. Texas Comptroller of Public Accounts, Texas Property Tax Code Chapter 41: Texas Tax Code §41.44 sets the protest deadline as May 15 or 30 days after the notice of appraised value is delivered, whichever is later; §41.411 covers late protests when notice was not delivered; §41.44(b) allows a one-time 15-day extension on written request.
2. Lincoln Institute of Land Policy, Significant Features of the Property Tax database: State-by-state property tax rules including appeal windows vary widely; some states delegate deadlines to counties.
3. California State Board of Equalization: Regular-roll assessment appeal applications must generally be filed between July 2 and November 30, or within 60 days of a supplemental or escape assessment notice; Revenue and Taxation Code §170 allows deadline relief in declared disaster areas.
4. Florida Department of Revenue, Property Tax Oversight: Florida property owners must file a petition (Form DR-486) with the county Value Adjustment Board within 25 days of the mailing of the TRIM notice, which is typically sent in mid-August.
5. New York City Tax Commission: NYC property owners must file with the Tax Commission by March 1 to challenge assessed values.
6. Cook County Assessor's Office, Appeal Deadlines: Cook County reassesses each township on a triennial cycle; property owners have 30 days after the township's assessment publication to file with the Assessor, and a further window with the Board of Review after the Assessor's final ruling.
7. Pennsylvania Department of Community and Economic Development: Pennsylvania property tax assessment appeals are handled at the county level, with deadlines commonly set at August 1 or within 30 days of the notice, depending on the county board of assessment.
8. Colorado Division of Property Taxation: Colorado conducts reassessments on an odd-year cycle; the protest deadline in reassessment years is typically June 8 or 30 days from the notice of valuation mailing.
9. Ohio Revised Code §5715.19, Ohio General Assembly: Ohio allows a property tax complaint to be filed by March 31 and also permits complaints based on a change in the property's value during a three-year complaint period, giving owners a potential second filing opportunity.
10. Minnesota Legislature, Minn. Stat. §278.01: Minnesota property owners can appeal assessed values by filing a petition with the Tax Court by April 30 of the year following the abstract of assessment, after exhausting local board of appeal remedies.
11. Bexar County Appraisal District: The Bexar County Appraisal District publishes its property tax protest deadline (May 15 or 30 days after notice) and online protest filing options on its homepage during protest season.
12. International Association of Assessing Officers (IAAO): IAAO standards recommend that property owners be given adequate notice and opportunity to appeal assessed values; most jurisdictions provide 30 to 90 days from notice mailing as best practice.