Collin County, TX property tax appeal results & deadline
Protest deadline
May 15, or 30 days after the appraisal district mails your notice of appraised value, whichever is later
That rule applies in Collin County and every Texas county. Check the date on your notice today. If you got it recently, your clock is already running.
Source (primary): Texas Comptroller: Property Tax Protests and Appeals. Checked Oct 27, 2026.Late protests: the ARB can grant a late hearing only for good cause. Your appraisal district sets the exact mailing date on your notice.
Deadlines can change. Always confirm your deadline with your county appraisal district or assessor before filing.
Appeal results
| Measure (tax year 2025) | Result |
|---|---|
| Commercial: rise vs. appeal cut | +14.8% raised, 8.7% cut |
These are total value reductions won through protests, not the share of protests that won. Per-protest win rate: Not published in the sources we checked.
From the appraisal district (primary)
| Measure | Value | Year | Source |
|---|---|---|---|
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, all property | 48.5% (47,346 of 97,553) | 2022 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, other property | 48.6% (11,001 of 22,651) | 2022 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, residential (state categories A/B) | 48.5% (36,345 of 74,902) | 2022 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, all property | 52.4% (59,249 of 113,032) | 2023 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, other property | 51.0% (14,899 of 29,200) | 2023 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, residential (state categories A/B) | 52.9% (44,350 of 83,832) | 2023 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, all property | 58.2% (67,939 of 116,795) | 2024 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, other property | 50.0% (15,043 of 30,070) | 2024 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, residential (state categories A/B) | 61.0% (52,896 of 86,725) | 2024 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, all property | 61.8% (84,003 of 135,948) | 2025 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, other property | 53.3% (16,103 of 30,195) | 2025 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, residential (state categories A/B) | 64.2% (67,900 of 105,753) | 2025 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, all property (partial; 10541 still open) | 69.2% (107,681 of 155,715) | 2026 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, other property (partial; 99 still open) | 61.2% (25,582 of 41,787) | 2026 | analysis source, checked 2026-10-27 |
| AppealOdds analysis of Collin CAD Protest Data: closed protests ending with lower market value, residential (state categories A/B) (partial; 10442 still open) | 72.1% (82,099 of 113,928) | 2026 | analysis source, checked 2026-10-27 |
Method (AppealOdds analysis of Collin CAD Protest Data, data.texas.gov): we downloaded every protest row Collin CAD publishes, kept closed protests with both a noticed and a final ARB market value, and counted a protest as "lower value" when the final market value was below the noticed market value. Residential = state property categories A (single-family) and B (multifamily). Includes informal settlements, ARB orders, withdrawals and no-shows. Not an official CAD statistic. Script: analysis/collin_protests.py.
Source check date: Oct 27, 2026. Past results don't guarantee future outcomes.
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