Collin County property taxEstimate your bill and protest your appraisal.
Your bill starts from the value Collin County’s appraisal district puts on your home. Below are the 2025 rates for every unit that taxes Collin County homes, a worked example, and the 2027 protest dates. Then put in your own numbers.
Opens the calculator set to Collin County.
- Rates
- 2025
- School districts
- 21
- Cities
- 30
- Special districts
- 29
- Protest deadline
- May 17, 2027
2025 tax rates, Collin County
Per $100 of taxable valuePart 1 Units that tax every home in the county
- 01Collin County$0.149343
- 02Collin County Junior College District$0.08122
Part 2 The largest school district
- 03Plano ISD$1.03955
The district that covers the most taxable value in Collin County. 20 other districts tax part of the county; they're listed below.
Part 3 Example: a $300,000 homestead in Plano ISD, outside city limits
| Unit | Taxable | Tax |
|---|---|---|
| Collin County | $300,000 | $448 |
| Collin County Junior College District | $300,000 | $244 |
| Plano ISD | $160,000 | $1,663 |
Estimated yearly tax
$2,355
Each $10,000 cut from this appraisal saves about $127 a year.
An example value, not a typical Collin County home. The school line subtracts the $140,000 state homestead exemption. It leaves out city and special district taxes and any local-option exemptions the county or school district offers, so your bill can differ.
Estimate My TaxSource Texas Comptroller of Public Accounts, Tax Rates and Levies (https://comptroller.texas.gov/taxes/property-tax/rates/). Adopted 2025 rates.
Checking Collin County…
Tax Code 41.44
Protesting in Collin County.
State law sets the protest rules, so they’re the same in Collin County as in every Texas county. You file with the appraisal district, not the county.
- 01Apr 2027
Your notice arrives
It lists a market value and an appraised value. You’re taxed on the appraised value, less your exemptions.
- 02May 17, 2027
Protest deadline
File Form 50-132, the Notice of Protest, by May 15 or within 30 days after your notice was delivered, whichever is later. May 15 is a Saturday in 2027, so the deadline moves to Monday, May 17. Many districts take protests online.
- 03May to Jul
Informal meeting
Most districts offer a meeting with a staff appraiser before the hearing, and many protests settle there. Take an offer only if it matches your evidence.
- 04Summer
Review board hearing
If the meeting doesn’t settle it, the appraisal review board, a panel of local citizens, hears both sides and rules.
Tax Code 41.43(b)(3)
Equal appraisal
You can protest that your home is appraised unequally. The board has to rule for you unless the district shows your appraised value is at or below the median of a reasonable number of comparable homes, adjusted for their differences. Every home’s appraised value is public, so you can build this case without sale prices.
Tax Code 23.23
The 10% homestead cap
Once your home has a homestead exemption, its appraised value can’t rise more than 10% a year, plus the value of new improvements. The market value on your notice can rise faster. Check that the appraised value respects the cap.
Where you file
Collin County appraisal district.
Every Texas county is served by an appraisal district, which sets values. The taxing units set the rates. Your notice, the protest form, and the hearing all go through the district.
- Website
- collincad.org
- Phone
- 469-742-9200
- Office
- 250 Eldorado Pkwy., McKinney, TX 75069-8023
Source Texas Comptroller, county directory, listing updated July 15, 2026. Confirm the details with the district before you file.
Every school district and city.
Which ones tax your home depends on where it sits. Your notice lists them. Rates are 2025, per $100 of taxable value. Collin County also has 29 special districts in the rates file, including 22 municipal utility districts, 3 municipal management districts and 1 road district. The calculator lists them.
| District | Rate |
|---|---|
| Allen ISD | $1.1258 |
| Anna ISD | $1.2399 |
| Bland ISD | $0.85693 |
| Blue Ridge ISD | $1.2452 |
| Celina ISD | $1.2089 |
| Community ISD | $1.2077 |
| Farmersville ISD | $1.2150 |
| Frisco ISD | $1.0194 |
| Leonard ISD | $1.2252 |
| Lovejoy ISD | $1.2552 |
| McKinney ISD | $1.1043 |
| Melissa ISD | $1.2245 |
| Plano ISD | $1.03955 |
| Princeton ISD | $1.2072 |
| Prosper ISD | $1.2141 |
| Rockwall ISD | $1.0669 |
| Royse City ISD | $1.2552 |
| Trenton ISD | $1.2072 |
| Van Alstyne ISD | $1.1748 |
| Whitewright ISD | $0.9781 |
| Wylie ISD | $1.1752 |
| City | Rate |
|---|---|
| Allen | $0.4154 |
| Anna | $0.525073 |
| Blue Ridge | $0.429606 |
| Carrollton | $0.5375 |
| Celina | $0.576401 |
| Dallas | $0.6988 |
| Fairview | $0.316658 |
| Farmersville | $0.7250 |
| Frisco | $0.425517 |
| Garland | $0.689746 |
| Josephine | $0.468097 |
| Lavon | $0.4200 |
| Lowry Crossing | $0.2000 |
| Lucas | $0.255463 |
| McKinney | $0.412284 |
| Melissa | $0.454116 |
| Murphy | $0.357514 |
| Nevada | $0.22146 |
| New Hope | $0.200635 |
| Parker | $0.310439 |
| Plano | $0.4376 |
| Princeton | $0.440226 |
| Prosper | $0.5050 |
| Richardson | $0.54218 |
| Royse City | $0.5780 |
| Sachse | $0.650416 |
| Saint Paul | $0.208008 |
| Van Alstyne | $0.553713 |
| Weston | $0.3600 |
| Wylie | $0.543438 |