Collin County property tax protest 2027: deadline, forms and how to file
To protest your 2027 Collin County assessment, file with the Collin Central Appraisal District by 17 May 2027 (May 15, or 30 days after the date on your appraisal notice, whichever is later, Tex. Tax Code §41.44), online at onlineportal.collincad.org, by mail or in person.
Protest deadline17 May 2027· 209 days leftReal property notices of appraised value were mailed starting April 15 in 2026; business personal property notices began mid-May 2026 (2026 schedule).
Data as of 20 Oct 2026 · Collin Central Appraisal DistrictCheck your own assessment
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How to file in Collin County
- Step 1 · by 17 May 2027
File the protest
Online at onlineportal.collincad.org with the account number on your notice, or by mailing Form 50-132. State the grounds the county recognises: incorrect appraised value and unequal appraisal.
- Step 2 · before the hearing
Prepare and submit your evidence
Ask the appraisal district for the evidence it will use at the hearing; it must make it available at least 14 days before (Tex. Tax Code §41.461). Bring your own: comparable appraised values (for an unequal-appraisal protest), photos of condition issues, repair estimates and any recent sales you have. Saying the value is wrong is not enough; the panel decides on evidence.
- Step 3
Meet, then hear
An informal review with Collin Central Appraisal District appraiser comes first; if you decline the offer, the Collin Central Appraisal District Appraisal Review Board hears the case. Most reductions happen at the first step.
Before you file: how to read your notice · evidence that works · informal vs formal hearing · when not to appeal
Forms
| Form | Number | Use | Format |
|---|---|---|---|
| Property Owner’s Notice of Protest | 50-132 | The protest itself. Filing through the district’s online system, where it has one, replaces this form. | Fillable PDF |
| Property Owner’s Affidavit of Evidence | 50-283 | Submit evidence in writing if you cannot attend the hearing. | Fillable PDF |
| Appointment of Agent | 50-162 | Only if someone else represents you. Appealmetrics does not. | Fillable PDF |
Appeal levels
| Level | Who hears it | Deadline | Cost |
|---|---|---|---|
| Informal review | Collin Central Appraisal District appraiser | After you file; the district schedules it | Free |
| Formal hearing | Collin Central Appraisal District Appraisal Review Board | Scheduled by the ARB with at least 15 days’ notice | Free |
| Binding arbitration | Texas Comptroller-appointed arbitrator | 60 days after you receive the ARB order | Deposit per the Comptroller’s fee schedule; refunded less $50 if the arbitrator’s value is closer to yours |
| District court | Collin County district court | 60 days after you receive the ARB order | Filing fees and counsel |
What evidence the board accepts
Ask the appraisal district for the evidence it will use at the hearing; it must make it available at least 14 days before (Tex. Tax Code §41.461). Bring your own: comparable appraised values (for an unequal-appraisal protest), photos of condition issues, repair estimates and any recent sales you have. Saying the value is wrong is not enough; the panel decides on evidence.
Collin County questions
When is the Collin County protest deadline for 2027?
May 17, 2027 (May 15 is a Saturday), or 30 days after the date printed on your appraisal notice, whichever is later. Confirm the date on your notice.
How do I file a protest in Collin County?
File online at onlineportal.collincad.org, or mail or hand-deliver Comptroller Form 50-132 to the Collin Central Appraisal District, 250 Eldorado Pkwy., McKinney, TX 75069-8023.
Who hears my protest in Collin County?
The Collin Central Appraisal District Appraisal Review Board, a panel of county residents separate from the district’s appraisers. You can usually meet informally with a district appraiser first and settle without a hearing.
Can I protest if sale prices are not public in Texas?
Yes. Texas law lets you protest on unequal appraisal: your home’s appraised value compared with the median appraised value of comparable homes, adjusted (Tex. Tax Code §41.43(b)(3)). That test uses the district’s own records.
How do I contact the Collin Central Appraisal District?
Mail: 250 Eldorado Pkwy., McKinney, TX 75069-8023. Phone: (469) 742-9200. Hours and walk-in details: collincad.org.
Can I protest after the deadline?
Only in limited cases: a late protest with good cause before the ARB approves the records (§41.44(b)), or a motion to correct a substantial error (§25.25). Otherwise, wait for next year and set a reminder.
Check whether yours is over-assessed
Nearby counties
Rockwall County · Hunt County · Grayson County · Denton County · Dallas County · Fannin County · Kaufman County
- Texas Comptroller appraisal district directory
- Collin Central Appraisal District website
- Collin CAD Taxpayer Portal
- Collin CAD 2026 Appraisal Notices
- Collin Appraisal Review Board
- Tex. Tax Code ch. 41 — Local Review
- Texas Comptroller — Appraisal Protests and Appeals
- Texas Comptroller — Regular Binding Arbitration
- Texas Comptroller — Valuing Property (notice dates)
- Texas Comptroller — Property Tax Forms
- U.S. Census Bureau, county population estimates (2024) and county gazetteer (2024).