What is a property tax appeal?

A property tax appeal (also called a protest) is a formal process where you challenge your county appraisal district's assessed value of your home. In Texas, you file a protest with your county's Appraisal Review Board (ARB), present evidence that your home is overvalued, and the ARB issues a ruling.

How much can I save by appealing my property taxes?

Texas homeowners who appeal save an average of $774 per year. Success rates range from 80-91% when homeowners bring comparable sales evidence.

When is the property tax protest deadline in Collin County?

Collin County follows the Texas state deadline of May 15, 2026 (or 30 days after your appraisal notice is mailed, whichever is later). Protests must be filed with Collin CAD before this date.

What is the success rate for Collin County property tax appeals?

Homeowners in Collin County who file with strong comparable evidence have a 86% success rate, saving an average of $1,058 per year.

Collin County · Deadline May 15, 2026

Collin County Property Tax Appeal Guide

Q: What's the deadline to file a property tax protest in Texas?

In Texas, the deadline to file a property tax protest is May 15, 2026 (or 30 days after your appraisal notice is mailed, whichever is later). There are no extensions.

Plano / Frisco homeowners save an average of $1,058/year when they appeal with strong comparable evidence. 86% of well-prepared protests succeed.

Waitlist Open · Harris County Live Today

Early Access

Collin County packets coming soon

We're building county-specific appeal packets for Collin County. Drop your email and we'll send you the Collin County ARB filing checklist today, plus notify you the moment packets launch.

Phone optional. We'll only contact you about Collin County appeals — no spam.

$478,000

Median Home Value

2.04%

Effective Tax Rate

$9,751

Avg Annual Tax

$1,058

Avg Appeal Savings

How property tax appeals work in Collin County

Every Texas homeowner has a right to protest their assessed value under Texas Property Tax Code §41.41. In Collin County, protests are handled by the Collin Central Appraisal District (Collin CAD). The deadline is May 15, 2026 — or 30 days after your appraisal notice was mailed, whichever is later.

Collin CAD has one of the most digitized protest systems in Texas. Online filing through their portal is standard — informal hearings often resolve in 10 minutes with good evidence.

The strongest protests include 3-7 comparable sales from the last 12 months in your immediate neighborhood, adjusted for square footage, age, and condition. Plano / Frisco-area assessors typically reduce values when presented with clear, recent comp data.

File With

Collin Central Appraisal District

Address: 250 Eldorado Pkwy, McKinney, TX 75069
Phone: (469) 742-9200
Website: collincad.org
2026 Deadline: May 15, 2026

Collin County cities on the waitlist

When Collin County goes live, we'll cover homeowners across:

Plano, TXFrisco, TXMcKinney, TXAllen, TXWylie, TXProsper, TX

Early Access

Collin County packets coming soon

We're building county-specific appeal packets for Collin County. Drop your email and we'll send you the Collin County ARB filing checklist today, plus notify you the moment packets launch.

Phone optional. We'll only contact you about Collin County appeals — no spam.

Other Texas county appeal guides

Harris County →Dallas County →Tarrant County →Bexar County →Travis County →Denton County →Fort Bend County →Williamson County →Montgomery County →Hidalgo County →El Paso County →Galveston County →