Property tax in Collin County, Texas

Who sends the property tax bill in Collin County, and how do you pay it?

The bill comes from the Collin County Tax Assessor-Collector. The value it is based on is set by a separate office, the Collin Central Appraisal District, which is who to ask if the value looks wrong. For how to look up and pay the bill, go to the county's own payment information.

The Collin County tax statement also carries the taxes of the cities, school districts, Collin College and special districts the county tax office collects for, and you may pay the county, city and school district shares separately. Mortgage companies usually request the statement, so escrowed owners may never see one; if one arrives, send it to the lender. Card and electronic check payments are handled by Certified Payments. If no statement has arrived by November 1, call the tax office. Homeowners 65 or older or disabled may defer homestead taxes; deferred taxes still build up interest at 5% a year.

When are property taxes due in Collin County?

For the 2026 bill, Collin County has one due date: January 31, 2027. Taxes are due when the statement arrives and can be paid without penalty or interest through January 31. January 31, 2027 is a Sunday. Under Texas law, when a deadline falls on a weekend or holiday, acting on the next regular business day is on time, so a payment on Monday, February 1, 2027 counts. The tax office says a mailed payment must carry a U.S. Postal Service postmark on or before January 31 and warns that mail sent late on the 31st may be postmarked February 1; since that is a Sunday, mailing by Saturday, January 30 avoids any question. Partial payments are accepted. Homeowners with an over-65 or disabled person exemption may instead pay the homestead tax in four equal installments due January 31, March 31, May 31 and July 31 with no penalty or interest; a missed installment brings the full penalty. May 31, 2027 is Memorial Day and July 31, 2027 is a Saturday, and state law makes a payment on the next business day timely. Taxes are delinquent on February 1 (for this bill, a payment made on Monday, February 1, 2027 still counts as on time because January 31 is a Sunday). Penalty and interest start at 7% (6% penalty plus 1% interest) in February and rise each month to 18% in July (12% penalty plus 6% interest); accounts not paid in full by June 30 go to the delinquent tax attorney with an additional penalty of up to 20% of the taxes, penalty and interest due. The tax office has no authority to waive penalty or interest.

From Collin County's published schedule, checked September 23, 2026. If a date falls on a weekend or holiday, the county's own rules on the next business day apply.

Estimate the property tax on a home in Collin County

Enter a home's market value for a ballpark at Collin County's average effective rate of 1.58% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.

Property tax in Collin County at a glance

Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.

How does Collin County compare in Texas?

Among Texas's 250 counties, Collin County has the 31st highest effective property-tax rate: 30 rank higher and 219 rank lower. That places it among the most heavily taxed counties in the state. Nationally, it ranks 278th of 3135 US counties by effective rate. See every Texas county ranked.

How much do homeowners in Collin County actually pay?

The median is only the middle bill. Across Collin County's 268,813 owner-occupied homes, 87.8% pay $3,000 or more a year in property tax, 91.7% pay at least $2,000, and 2.2% pay under $800. Another 2.4% report paying no property tax at all, which usually means an exemption covers the whole bill.

Owners with a mortgage pay a median of $7,994 and owners without one pay $6,547. Owners who have paid off a home have usually held it longer, and in states that cap how fast an existing owner's assessment can rise, long-held homes carry lower assessed values. Census table B25103.

How does the Collin County property tax bill compare with local incomes?

The median property tax bill of $7,521 is about 4.8% of the median income of Collin County homeowner households, $156,194 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 64.5% of Collin County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.

Have property taxes gone up in Collin County?

Yes. The median bill went from $6,047 in 2015-2019 to $7,521 in 2020-2024, a 24.4% rise. Over the same span the median home value moved 50.8%, from $315,300 to $475,600. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.

Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.

Property tax in counties next to Collin County

Collin County borders 6 counties.

How is a home assessed in Collin County?

Texas assesses homes at 100% of market value in every county, Collin County included. How Texas assesses and reappraises homes.

Is there a homestead exemption in Collin County?

Yes. Texas exempts $140,000 of a home's value from school-district taxes, and local taxing units may add an exemption of up to 20% of value. That is the Texas rule, and it applies in Collin County. Texas's exemptions and relief programs in full.

On top of the Texas programs, Collin County runs its own:

• Collin County homestead exemption: For tax year 2025, the latest amounts the county has published, Collin County exempted 5% of a homestead's value (at least $5,000) from county tax. Apply through the appraisal district. Apply by April 30.
• Collin County over-65 and disability exemptions and tax ceiling: For tax year 2025, Collin County gave homeowners 65 or older an extra $30,000 exemption from county tax and disabled homeowners an extra $20,000, and since 2004 the county has frozen the county tax on a qualifying homestead with a tax ceiling. Apply through the appraisal district; owners who turn 65 or become disabled during the year can apply for that year, with up to two years to do so.

How to appeal your Collin County property assessment

In Collin County you appeal to the Collin Central Appraisal District Appraisal Review Board (ARB). The deadline: File a protest by May 15, or within 30 days after your notice of appraised value was delivered, whichever is later; if the deadline falls on a weekend or holiday it moves to the next business day. The 2026 deadline for real property was May 15, 2026, so that window has closed for most owners. How to file. Checked September 23, 2026 against the official appeal rules.

How Texas's appeal process works, including the next level if the first one turns you down.

Texas rules from primary state sources, reviewed September 7, 2026; sources on the Texas page.

Work out your own numbers

• How much house can I afford?

  Your income, debts and down payment against the 28/36 rule lenders actually use, with Collin County's tax rate to hand.

• Mortgage calculator

  Monthly payment with principal, interest, tax and insurance, plus what an extra payment saves you.

• Texas income tax

  Brackets, standard deduction and what Texas actually taxes.

• Sales tax in Collin County

  The other local tax: combined state and local rate for this county.