Collin County Property Tax Calculator (2026)
The Collin County median effective property tax rate is 1.48% for 2026 (U.S. Census Bureau ACS 2024), 0.01% below the Texas median of 1.49%. On a $400,000 home that is about $5,920 a year (~$493 a month). Collin County property is assessed by the Collin Central Appraisal District (CollinCAD). Enter your home value below for an instant estimate.
What is the Collin County property tax rate in 2026?
Collin County's median effective property tax rate is 1.48% (U.S. Census Bureau ACS 2024). The county median home is $475,600 with a median tax of about $7,521.
How much is property tax on a $400,000 home in Collin County?
About $5,920 a year, or roughly $493 a month, at the 1.48% median effective rate before exemptions.
Who handles property tax in Collin County?
The Collin Central Appraisal District (CollinCAD) sets your assessed value. The Collin County Tax Assessor-Collector collects the bill. Appeal by May 15.
When are Collin County property taxes due?
January 31 (bills issued around October 1; delinquent February 1).
Collin County Property Tax Calculator (2026)
Rates updated 2026 (U.S. Census Bureau ACS 2024). Live estimate — county median effective rate.
Collin County's median effective property tax rate is 0.01% below the Texas median and the US average is 0.94%. Your assessed value, local millage, and exemptions (homestead, senior, veteran) will change the actual bill.
Who assesses and collects property tax in Collin County?
In Collin County, the Collin Central Appraisal District (CollinCAD) sets the assessed value of your home each year. The Collin County Tax Assessor-Collector issues the bill and collects payment.
For your exact rate, exemptions, and account details, go to collincad.org — the official source for Collin County. This page is an independent estimate, not a tax bill.
How much is property tax on a home in Collin County?
At the Collin County median effective rate of 1.48%, here is the estimated annual and monthly bill by home value. The county median home value is $475,600, with a median tax of about $7,521 a year.
| Home value | Rate (1.48%) | Annual tax | Monthly |
|---|---|---|---|
| $200,000 | 1.48% | $2,960 | $247 |
| $400,000 | 1.48% | $5,920 | $493 |
| $475,600 (county median) | 1.48% | $7,521 | $627 |
| $750,000 | 1.48% | $11,100 | $925 |
When are Collin County property taxes due, and when can you appeal?
Assessment (lien) date: January 1 (Notices of Appraised Value mailed mid-April). Annual — CollinCAD reappraises every year.
Payment: January 31 (bills issued around October 1; delinquent February 1).
Appeal window: May 15, or 30 days after CollinCAD mails your Notice of Appraised Value, whichever is later. Missing it usually means accepting the assessed value for the year.
Collin County homesteads are protected by a 10% per year on a homestead's appraised value, which caps how fast your taxable value can climb even when the market jumps.
What exemptions can lower your Collin County property tax?
| Exemption | Amount or rule |
|---|---|
| School district residence homestead | $140,000 off school-taxable value (2026) |
| Age 65+ or disabled (school) | additional $60,000 plus a school-tax ceiling |
| Disabled veteran | partial to total by VA disability rating; 100% rating = full homestead exemption |
| Local-option homestead | up to 20% of appraised value (set by each taxing unit) |
Amounts and eligibility change over time and are administered locally, so confirm what you qualify for with the Collin Central Appraisal District (CollinCAD) before relying on a figure.
How do you estimate your Collin County property tax by hand?
- Find your home's assessed value on your latest notice from the Collin Central Appraisal District (CollinCAD).
- Subtract any exemptions you qualify for, such as homestead, senior, or veteran relief.
- Multiply the remaining taxable value by your local combined tax rate.
- For a quick estimate, multiply your home value by 1.48% — the Collin County median effective rate used above.
Which cities are in Collin County, and what makes it different?
Collin County includes Plano, McKinney, Frisco, Allen, Wylie, Prosper, Celina, among others. Rates differ between these cities and their school and special districts, so two homes of equal value can owe different amounts.
Collin County is one of the fastest-growing counties in Texas, anchored by Plano, McKinney, and Frisco. County tax rates run lower than neighbouring Dallas County, but quickly rising values make the May 15 CollinCAD protest deadline and the 10% homestead cap important for owners.