Complete guide to protesting your Collin County property taxes in 2026. Beat CCAD with comparable sales evidence. Covers Plano, Frisco, McKinney, Allen, Celina, and all Collin County cities.
The Collin Central Appraisal District is responsible for valuing all real property in Collin County as of January 1st each year. CCAD uses computer-assisted mass appraisal (CAMA) — the same statistical modeling approach used by all Texas appraisal districts. In Collin County's high-value, fast-moving market, CAMA models are particularly prone to error because they rely on broad neighborhood averages that mask significant property-to-property variation. A home on a busy collector road in Frisco may be grouped with interior-lot homes and overvalued accordingly. New construction in rapid-growth areas like Celina and Prosper creates comp scarcity that leads to inflated model estimates. CCAD is legally required to value every property at 100% of its January 1st fair market value — if their estimate exceeds what your home would actually sell for, you have grounds to protest.
CCAD mails Notices of Appraised Value in April each year. Your protest deadline is the later of May 15, 2026, or 30 days from the date printed on your notice. Collin County is one of the highest-protest-volume counties in Texas — CCAD informal hearings fill quickly. Filing early is strongly recommended.
Collin County experienced some of the most explosive appreciation in Texas from 2020 to 2022 — Frisco and McKinney regularly appeared on national lists of fastest-appreciating markets. Median home prices in many Collin County submarkets rose 40-55% during this period. The correction that followed was equally sharp in some areas, with prices declining 10-20% from peak in certain zip codes as interest rates rose and inventory built up. CCAD's 2026 assessments, based on January 1, 2026 market conditions, may still reflect inflated 2022-2023 values in many areas. If your neighbors' homes have sold recently for less than your assessed value, you have a strong protest.
The Collin Central Appraisal District covers all municipalities within Collin County, including Plano (Collin County portions), Frisco (Collin County portions), McKinney, Allen, Celina, Prosper, Wylie, Murphy, Sachse, Fairview, Lucas, Anna, Blue Ridge, Farmersville, Lavon, Lowry Crossing, Melissa, Nevada, New Hope, Parker, Princeton, Royse City (Collin County portions), St. Paul, Van Alstyne, and Weston. Note that Plano and Frisco extend into both Collin and Denton counties — check your notice to confirm your appraisal district.
The strongest CCAD protests are built on comparable sales evidence — recent sales of similar homes in your specific neighborhood that closed for less than your assessed value. Collin County's variety of price points and submarkets means hyper-local comps are more persuasive than broad county averages.
Given Collin County's high property values, contingency fees are especially costly. At 25% of savings, a $2,200 annual reduction costs $550 in fees — every year you re-file with a contingency firm. At 50%, it's $1,100. TaxAppeal charges $89 flat. On the same $2,200 reduction, you keep $2,121 instead of $1,100–$1,650. The higher your Collin County assessment, the more a flat fee saves you.
$89 flat fee. You sign it, we file it. You keep 100% of your savings.
TaxAppeal USA is a self-service document-preparation and mail filing service. In every state we serve, including Florida, we are not property tax consultants, agents, or representatives, we do not provide tax or legal advice, and we do not represent customers before any appraisal district, board of equalization, value adjustment board, or review board. Every protest and petition is prepared for the property owner, signed by the owner, and filed in the owner’s name. In Florida we also pay your county’s Value Adjustment Board filing fee on your behalf and mail your petition to the Clerk of the Value Adjustment Board. Your petition is signed by you as the property owner under section 194.011(3), Florida Statutes. TaxAppeal USA does not sign as your representative, does not appear before the Board, and does not present evidence or argument at a hearing.