Appeal deadlines by county

Search by county, city or state. We publish a county's specific filing date only once we have checked it against a statute or that county's own published schedule — where we have not, the page says so instead of estimating.

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Nebraska (NE) Supported

Pennsylvania (PA) Supported

Alaska (AK) Guide only

How to Appeal Your Property Taxes in Alaska (2026 Guide) State Alaska gives you 30 days from your borough's assessment notice — and since January 2025, the board can't raise your value unless you ask it to.

Alabama (AL) Guide only

How to Appeal Your Property Taxes in Alabama (2026 Guide) State Alabama's Board of Equalization protest window, why owner-occupied homes are assessed at 10% of value, and how to build a winning case.

Arkansas (AR) Guide only

How to Appeal Your Property Taxes in Arkansas (2026 Guide) State Arkansas's mid-August appeal deadline, how the 20%-of-market assessment ratio and Amendment 79 cap work, and how to build a county Equalization Board case.

Arizona (AZ) Guide only

How to Appeal Your Property Taxes in Arizona (2026 Guide) State Arizona's 60-day Notice of Value appeal window, how the 10% assessment ratio and Proposition 117's 5% cap work, and how to build a county case.

California (CA) Guide only

How to Appeal Your Property Taxes in California (2026 Guide) State California's September 15/November 30 appeal deadline, how Prop 13 and Prop 8 assessments work, and how to build a case with your county appeals board.

Colorado (CO) Guide only

How to Appeal Your Property Taxes in Colorado (2026 Guide) State Colorado's June 8 protest deadline, how the yearly-set residential assessment rate works, and why your appeal contests your home's actual value.

Connecticut (CT) Guide only

How to Appeal Your Property Taxes in Connecticut (2026 Guide) State Connecticut's February 20 Board of Assessment Appeals deadline, why homes are assessed at 70% of market value, and how to build a winning case.

District of Columbia (DC) Guide only

How to Appeal Your Property Taxes in Washington, DC (2026 Guide) State DC's April 1 property tax appeal deadline, how the 100%-of-market assessment and 10% homestead cap work, and why the Commission can raise your value.

Delaware (DE) Guide only

How to Appeal Your Property Taxes in Delaware (2026 Guide) State Delaware's county appeal deadlines, how the 2023–25 reassessments reset every value to market, and how to build a base-year comparable-sales case.

Florida (FL) Guide only

How to Appeal Your Property Taxes in Florida (2026 Guide) State Florida's TRIM-based appeal deadline (25 days after your notice), how just value and Save Our Homes work, and how to build a Value Adjustment Board case.

Georgia (GA) Guide only

How to Appeal Your Property Taxes in Georgia (2026 Guide) State Georgia's 45-day appeal deadline, the 40%-of-market assessment ratio, the HB 581 homestead cap, and why the board can't raise your value on appeal.

Hawaii (HI) Guide only

How to Appeal Your Property Taxes in Hawaii (2026 Guide) State Hawaii's county-by-county appeal deadlines, why homes are assessed at 100% of market value, and how to build a winning comparable-sales case.

Iowa (IA) Guide only

How to Appeal Your Property Taxes in Iowa (2026 Guide) State Iowa's April 2–30 Board of Review protest window, why the 'rollback' isn't what you appeal, and how to build a winning comparable-sales case.

Idaho (ID) Guide only

How to Appeal Your Property Taxes in Idaho (2026 Guide) State Idaho's fourth-Monday-in-June appeal deadline, why the state assesses at full market value, and how to build a county Board of Equalization case.

Illinois (IL) Guide only

How to Appeal Your Property Taxes in Illinois (2026 Guide) State Illinois's rolling Board of Review deadlines, how Cook's 10% and downstate's 33⅓% assessment levels work, and how to win on comps or uniformity.

Indiana (IN) Guide only

How to Appeal Your Property Taxes in Indiana (2026 Guide) State Indiana's June 15 assessment appeal deadline, why the 1%/2%/3% tax caps don't block your appeal, and how to build a Form 130 case that wins.

Kansas (KS) Guide only

How to Appeal Your Property Taxes in Kansas (2026 Guide) State Kansas's 30-day value-notice appeal window, why homes are assessed at 11.5% of market value, and how to build a winning comparable-sales case.

Kentucky (KY) Guide only

How to Appeal Your Property Taxes in Kentucky (2026 Guide) State Kentucky's May open inspection period, the required PVA conference, and how the fair cash value standard shapes a county board of assessment appeals case.

Louisiana (LA) Guide only

How to Appeal Your Property Taxes in Louisiana (2026 Guide) State Louisiana's parish public-inspection appeal window, why homes are assessed at 10% of fair market value, and how to build a winning case.

Massachusetts (MA) Guide only

How to Appeal Your Property Taxes in Massachusetts (2026 Guide) State Massachusetts's February 1 abatement deadline, why your home is assessed at full and fair cash value, and how to build an abatement that wins.

Maryland (MD) Guide only

How to Appeal Your Property Taxes in Maryland (2026 Guide) State Maryland's assessment appeal deadlines, how the 3-year phase-in and Homestead cap work, and how to build a full-cash-value case that wins.

Maine (ME) Guide only

How to Appeal Your Property Taxes in Maine (2026 Guide) State Maine's 185-day abatement deadline, how your town's certified ratio changes what over-assessed means, and how to build a case your assessor can't wave off.

Michigan (MI) Guide only

How to Appeal Your Property Taxes in Michigan (2026 Guide) State Michigan's March Board of Review and July 31 Tax Tribunal deadline, how the 50%-of-value assessment and Proposal A taxable-value cap work, and how to win.

Minnesota (MN) Guide only

How to Appeal Your Property Taxes in Minnesota (2026 Guide) State Minnesota's April 30 Tax Court deadline, why your home is valued at estimated market value, and how to build a winning comparable-sales case.

Missouri (MO) Guide only

How to Appeal Your Property Taxes in Missouri (2026 Guide) State Missouri's Board of Equalization deadline, why homes are assessed at 19% of true value, and how to build a winning comparable-sales case.

Mississippi (MS) Guide only

How to Appeal Your Property Taxes in Mississippi (2026 Guide) State Mississippi's first-Monday-of-August appeal deadline, how the 10%/15% class assessment ratios work, and how to build a Board of Supervisors case.

Montana (MT) Guide only

How to Appeal Your Property Taxes in Montana (2026 Guide) State Montana's 30-day appeal window after your appraisal notice, why the class-four tax rate isn't an assessment ratio, and how the appeal board can raise you.

North Carolina (NC) Guide only

How to Appeal Your Property Taxes in North Carolina (2026 Guide) State North Carolina's Board of Equalization and Review deadline, how frozen reappraisal-year values work, and how to build a comparable-sales case that wins.

North Dakota (ND) Guide only

How to Appeal Your Property Taxes in North Dakota (2026 Guide) State North Dakota's appeal window runs April to June, and your deadline is a board meeting date, not a fixed one. How to read the three values on your notice.

New Hampshire (NH) Guide only

How to Appeal Your Property Taxes in New Hampshire (2026 Guide) State New Hampshire's March 1 abatement deadline, the September 1 BTLA appeal, and how your town's equalization ratio converts assessed value to market value.

New Jersey (NJ) Guide only

How to Appeal Your Property Taxes in New Jersey (2026 Guide) State New Jersey's April 1 appeal deadline, how the Chapter 123 Director's Ratio decides if you're over-assessed, and why the county board can raise your value.

New Mexico (NM) Guide only

How to Appeal Your Property Taxes in New Mexico (2026 Guide) State New Mexico's Notice of Value protest deadline, why you appeal your full market value, and how the 3% residential valuation cap works.

Nevada (NV) Guide only

How to Appeal Your Property Taxes in Nevada (2026 Guide) State Nevada's January 15 appeal deadline, why 35% of taxable value isn't market value, and how comparable sales win a Board of Equalization case.

New York (NY) Guide only

How to Appeal Your Property Taxes in New York (2026 Guide) State New York's Grievance Day deadline, how local assessment ratios (not one statewide number) work, and how to build an RP-524 grievance that wins.

Ohio (OH) Guide only

How to Appeal Your Property Taxes in Ohio (2026 Guide) State Ohio's March 31 Board of Revision deadline, how the 35%-of-true-value assessment actually works, and how to build a DTE Form 1 appeal that wins.

Oklahoma (OK) Guide only

How to Appeal Your Property Taxes in Oklahoma (2026 Guide) State Oklahoma's 30-day protest window, how the county assessment percentage and 3%/5% valuation cap work, and how to build a winning case.

Oregon (OR) Guide only

How to Appeal Your Property Taxes in Oregon (2026 Guide) State Oregon's December 31 appeals deadline, how Measure 50's Real Market Value and Maximum Assessed Value work, and when appealing actually cuts your bill.

Other guides Guide only

Is My Home Over-Assessed? How to Tell in 5 Minutes Guide A 5-minute check on whether your property tax assessment is too high: read your notice, convert assessed value to market value, compare to real sales.

Rhode Island (RI) Guide only

How to Appeal Your Property Taxes in Rhode Island (2026 Guide) State Rhode Island's appeal clock runs off your tax bill, not a fixed spring date. The November 15 rule, the January 31 myth, and how to build a case.

South Carolina (SC) Guide only

How to Appeal Your Property Taxes in South Carolina (2026 Guide) State South Carolina's 4% owner-occupied assessment ratio, the 15%-per-5-years reassessment cap, and the 90-day window to appeal to your Board of Assessment Appeals.

South Dakota (SD) Guide only

How to Appeal Your Property Taxes in South Dakota (2026 Guide) State South Dakota's appeal deadline is March 11, 2027 — the Thursday before the third Monday in March. Deadlines, evidence, and the new 3% county limit.

Tennessee (TN) Guide only

How to Appeal Your Property Taxes in Tennessee (2026 Guide) State Tennessee's Board of Equalization deadline, why you appeal your full appraised value (not the 25% figure), and how to build a winning case.

Texas (TX) Guide only

How to Appeal Your Property Taxes in Texas (2026 Guide) State Texas's May 15 protest deadline, how the 100% market-value assessment and 10% homestead cap work, and how to win an equal-and-uniform ARB case.

Utah (UT) Guide only

How to Appeal Your Property Taxes in Utah (2026 Guide) State Utah's September 15 appeal deadline, how the 100%-market assessment and 45% residential exemption work, and how to build a County BOE case.

Virginia (VA) Guide only

How to Appeal Your Property Taxes in Virginia (2026 Guide) State Virginia's locality-set appeal deadlines, why your home is assessed at 100% of fair market value, and how to build a comparable-sales case that wins.

Vermont (VT) Guide only

How to Appeal Your Property Taxes in Vermont (2026 Guide) State Vermont's grievance window closes June 19 or July 9 depending on your town's size — and the Board of Civil Authority can raise your value, not just lower it.

Washington (WA) Guide only

How to Appeal Your Property Taxes in Washington (2026 Guide) State Washington's rolling Board of Equalization deadline, why your home is assessed at 100% of true and fair value, and how to build a winning appeal.

Wisconsin (WI) Guide only

How to Appeal Your Property Taxes in Wisconsin (2026 Guide) State Wisconsin's Board of Review window, how your municipality's level of assessment works, and how to build a winning comparable-sales case.

West Virginia (WV) Guide only

How to Appeal Your Property Taxes in West Virginia (2026 Guide) State West Virginia's short Board of Equalization & Review window, why you appeal your full appraised value (not the 60% figure), and how to win.

Wyoming (WY) Guide only

How to Appeal Your Property Taxes in Wyoming (2026 Guide) State Wyoming property tax appeal: the 30-day deadline, how the 9.5% ratio and 4% cap work, and the sales data your county has to show you.

Updated September 11, 2026