Reference · Updated Continuously
Property tax appeal deadlines by county (2026)
Verified from official county sources and updated as counties post new cycles. 86 counties currently have verified open or upcoming windows. Miss the deadline and there's no do-over until next year — check any address free at grovehopper.com.
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| County | State | Appeal deadline | Time left | How to file |
|---|---|---|---|---|
| Pima County | Arizona | 2026-04-14 | — | Guide → |
| Mecklenburg County | North Carolina | 2026-05-04 | — | Guide → |
| Bexar County | Texas | 2026-05-15 | — | Guide → |
| Denton County | Texas | 2026-05-15 | — | Guide → |
| El Paso County | Texas | 2026-05-15 | — | Guide → |
| Fort Bend County | Texas | 2026-05-15 | — | Guide → |
| Hidalgo County | Texas | 2026-05-15 | — | Guide → |
| Montgomery County | Texas | 2026-05-15 | — | Guide → |
| Travis County | Texas | 2026-05-15 | — | Guide → |
| Williamson County | Texas | 2026-05-15 | — | Guide → |
| Jefferson County | Kentucky | 2026-05-18 | — | Guide → |
| Hamilton County | Tennessee | 2026-06-05 | — | Guide → |
| Denver County | Colorado | 2026-06-08 | — | Guide → |
| Davidson County | Tennessee | 2026-06-26 | — | Guide → |
| Gwinnett County | Georgia | 2026-06-29 | — | Guide → |
| Shelby County | Tennessee | 2026-06-30 | — | Guide → |
| DeKalb County | Georgia | 2026-07-13 | — | Guide → |
| Cobb County | Georgia | 2026-07-20 | — | Guide → |
| Kane County | Illinois | 2026-07-27 | — | Guide → |
| Fulton County | Georgia | 2026-07-31 | — | Guide → |
| Oakland County | Michigan | 2026-07-31 | — | Guide → |
| Wayne County | Michigan | 2026-07-31 | — | Guide → |
| Chester County | Pennsylvania | 2026-08-03 | — | Guide → |
| McHenry County | Illinois | 2026-08-06 | — | Guide → |
| Orleans Parish | Louisiana | 2026-08-20 | 4 days | Guide → |
| Lake County | Illinois | 2026-08-24 | 8 days | Guide → |
| Snohomish County | Washington | 2026-08-25 | 9 days | Guide → |
| Summit County | Ohio | 2026-08-27 | 11 days | Guide → |
| Escambia County | Florida | 2026-09-02 | 17 days | Guide → |
| Winnebago County | Illinois | 2026-09-04 | 19 days | Guide → |
| Osceola County | Florida | 2026-09-08 | 23 days | Guide → |
| Leon County | Florida | 2026-09-11 | 26 days | Guide → |
| Manatee County | Florida | 2026-09-11 | 26 days | Guide → |
| Pinellas County | Florida | 2026-09-11 | 26 days | Guide → |
| Polk County | Florida | 2026-09-11 | 26 days | Guide → |
| St. Johns County | Florida | 2026-09-11 | 26 days | Guide → |
| St. Lucie County | Florida | 2026-09-11 | 26 days | Guide → |
| Volusia County | Florida | 2026-09-11 | 26 days | Guide → |
| Marion County | Florida | 2026-09-14 | 29 days | Guide → |
| Will County | Illinois | 2026-09-14 | 29 days | Guide → |
| Alameda County | California | 2026-09-15 | 30 days | Guide → |
| Placer County | California | 2026-09-15 | 30 days | Guide → |
| San Francisco County | California | 2026-09-15 | 30 days | Guide → |
| Santa Clara County | California | 2026-09-15 | 30 days | Guide → |
| Ventura County | California | 2026-09-15 | 30 days | Guide → |
| Alachua County | Florida | 2026-09-15 | 30 days | Guide → |
| Pasco County | Florida | 2026-09-15 | 30 days | Guide → |
| Salt Lake County | Utah | 2026-09-15 | 30 days | Guide → |
| Utah County | Utah | 2026-09-15 | 30 days | Guide → |
| Broward County | Florida | 2026-09-18 | 33 days | Guide → |
| Collier County | Florida | 2026-09-18 | 33 days | Guide → |
| Contra Costa County | California | 2026-11-30 | 106 days | Guide → |
| Fresno County | California | 2026-11-30 | 106 days | Guide → |
| Kern County | California | 2026-11-30 | 106 days | Guide → |
| Los Angeles County | California | 2026-11-30 | 106 days | Guide → |
| Sacramento County | California | 2026-11-30 | 106 days | Guide → |
| San Bernardino County | California | 2026-11-30 | 106 days | Guide → |
| San Joaquin County | California | 2026-11-30 | 106 days | Guide → |
| San Mateo County | California | 2026-11-30 | 106 days | Guide → |
| Sonoma County | California | 2026-11-30 | 106 days | Guide → |
| Stanislaus County | California | 2026-11-30 | 106 days | Guide → |
| Camden County | New Jersey | 2026-12-01 | 107 days | Guide → |
| Pinal County | Arizona | 2026-12-15 | 121 days | Guide → |
| Johnson County | Kansas | 2026-12-20 | 126 days | Guide → |
| Erie County | New York | 2026-12-31 | 137 days | Guide → |
| Wake County | North Carolina | 2026-12-31 | 137 days | Guide → |
| Multnomah County | Oregon | 2026-12-31 | 137 days | Guide → |
| Washington County | Oregon | 2026-12-31 | 137 days | Guide → |
| Baltimore City | Maryland | 2027-01-04 | 141 days | Guide → |
| Baltimore County | Maryland | 2027-01-04 | 141 days | Guide → |
| Montgomery County | Maryland | 2027-01-04 | 141 days | Guide → |
| Honolulu County | Hawaii | 2027-01-15 | 152 days | Guide → |
| Monmouth County | New Jersey | 2027-01-15 | 152 days | Guide → |
| Charleston County | South Carolina | 2027-01-15 | 152 days | Guide → |
| Middlesex County | Massachusetts | 2027-02-01 | 169 days | Guide → |
| Suffolk County | Massachusetts | 2027-02-01 | 169 days | Guide → |
| Nassau County | New York | 2027-03-01 | 197 days | Guide → |
| New York County | New York | 2027-03-01 | 197 days | Guide → |
| Bronx County | New York | 2027-03-15 | 211 days | Guide → |
| Richmond County | New York | 2027-03-15 | 211 days | Guide → |
| Monroe County | New York | 2027-03-16 | 212 days | Guide → |
| Cuyahoga County | Ohio | 2027-03-31 | 227 days | Guide → |
| Franklin County | Ohio | 2027-03-31 | 227 days | Guide → |
| Montgomery County | Ohio | 2027-03-31 | 227 days | Guide → |
| Bergen County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Essex County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Hudson County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Middlesex County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Morris County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Ocean County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Passaic County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Union County | New Jersey | 2027-04-01 | 228 days | Guide → |
| Fairfax County | Virginia | 2027-04-01 | 228 days | Guide → |
| Oklahoma County | Oklahoma | 2027-04-05 | 232 days | Guide → |
| Dakota County | Minnesota | 2027-04-30 | 257 days | Guide → |
| Hennepin County | Minnesota | 2027-04-30 | 257 days | Guide → |
| Ramsey County | Minnesota | 2027-04-30 | 257 days | Guide → |
| Collin County | Texas | 2027-05-17 | 274 days | Guide → |
| Milwaukee County | Wisconsin | 2027-05-17 | 274 days | Guide → |
| Suffolk County | New York | 2027-05-18 | 275 days | Guide → |
| Livingston County | New York | 2027-05-25 | 282 days | Guide → |
| Onondaga County | New York | 2027-05-25 | 282 days | Guide → |
| Lake County | Indiana | 2027-06-15 | 303 days | Guide → |
| Marion County | Indiana | 2027-06-15 | 303 days | Guide → |
| Westchester County | New York | 2027-06-15 | 303 days | Guide → |
| Pierce County | Washington | 2027-07-01 | 319 days | Guide → |
| St. Charles County | Missouri | 2027-07-12 | 330 days | Guide → |
| St. Louis County | Missouri | 2027-07-12 | 330 days | Guide → |
| York County | Pennsylvania | 2027-08-01 | 350 days | Guide → |
| Lancaster County | Pennsylvania | 2027-08-02 | 351 days | Guide → |
| Jefferson County | Alabama | see guide | — | Guide → |
| Maricopa County | Arizona | see guide | — | Guide → |
| Orange County | California | see guide | — | Guide → |
| Riverside County | California | see guide | — | Guide → |
| San Diego County | California | see guide | — | Guide → |
| Arapahoe County | Colorado | see guide | — | Guide → |
| El Paso County | Colorado | see guide | — | Guide → |
| Brevard County | Florida | see guide | — | Guide → |
| Duval County | Florida | see guide | — | Guide → |
| Hillsborough County | Florida | see guide | — | Guide → |
| Lee County | Florida | see guide | — | Guide → |
| Miami-Dade County | Florida | see guide | — | Guide → |
| Orange County | Florida | see guide | — | Guide → |
| Palm Beach County | Florida | see guide | — | Guide → |
| Sarasota County | Florida | see guide | — | Guide → |
| Seminole County | Florida | see guide | — | Guide → |
| Cherokee County | Georgia | see guide | — | Guide → |
| Clayton County | Georgia | see guide | — | Guide → |
| Forsyth County | Georgia | see guide | — | Guide → |
| Cook County | Illinois | see guide | — | Guide → |
| DuPage County | Illinois | see guide | — | Guide → |
| Worcester County | Massachusetts | see guide | — | Guide → |
| Kent County | Michigan | see guide | — | Guide → |
| Macomb County | Michigan | see guide | — | Guide → |
| Jackson County | Missouri | see guide | — | Guide → |
| Clark County | Nevada | see guide | — | Guide → |
| Kings County | New York | see guide | — | Guide → |
| Queens County | New York | see guide | — | Guide → |
| Durham County | North Carolina | see guide | — | Guide → |
| Forsyth County | North Carolina | see guide | — | Guide → |
| Guilford County | North Carolina | see guide | — | Guide → |
| Hamilton County | Ohio | see guide | — | Guide → |
| Allegheny County | Pennsylvania | see guide | — | Guide → |
| Bucks County | Pennsylvania | see guide | — | Guide → |
| Delaware County | Pennsylvania | see guide | — | Guide → |
| Montgomery County | Pennsylvania | see guide | — | Guide → |
| Philadelphia County | Pennsylvania | see guide | — | Guide → |
| Greenville County | South Carolina | see guide | — | Guide → |
| Knox County | Tennessee | see guide | — | Guide → |
| Dallas County | Texas | see guide | — | Guide → |
| Harris County | Texas | see guide | — | Guide → |
| Tarrant County | Texas | see guide | — | Guide → |
| Prince William County | Virginia | see guide | — | Guide → |
| King County | Washington | see guide | — | Guide → |
| Dane County | Wisconsin | see guide | — | Guide → |
Sourced from official county assessor and appeal-board publications; each county guide links its sources. Deadlines can change — always confirm with the county before relying on a date. Journalists and bloggers: you're welcome to cite this table with a link. New counties are added daily.