Collin County property taxes are protested with the Collin Central Appraisal District. File by May 15 or 30 days after the appraisal district delivers your notice of appraised value, whichever is later. TaxDrop One is a self-guided evidence package at $129 per property per tax year, refunded if there is no reduction. TaxDrop Pro is full service in Collin County at 1% of the assessment reduction, paid only if we win.
✔ Free to file yourself - the district cannot charge a filing fee
✔ TaxDrop One - $129 per property per tax year, refunded if no reduction
✔ TaxDrop Pro - full service, 1% of the assessment reduction, pay only if we win
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Collin County property taxes are protested with the Collin Central Appraisal District. File by May 15 or 30 days after the appraisal district delivers your notice of appraised value, whichever is later. TaxDrop One is a self-guided evidence package at $129 per property per tax year, refunded if there is no reduction. TaxDrop Pro is full service in Collin County at 1% of the assessment reduction, paid only if we win.
✔ Free to file yourself - the district cannot charge a filing fee
✔ TaxDrop One - $129 per property per tax year, refunded if no reduction
✔ TaxDrop Pro - full service, 1% of the assessment reduction, pay only if we win
To protest your property taxes in Collin County, file a notice of protest with the Collin Central Appraisal District (Collin CAD) by the deadline: May 15 or 30 days after the appraisal district delivers your notice of appraised value, whichever is later. You can do it yourself for free, hire a protest company, or use TaxDrop. TaxDrop One is a self-guided evidence package at $129 per property per tax year, refunded if there is no reduction. TaxDrop Pro is full service in Collin County at 1% of the assessment reduction, paid only if we win.
This page covers the Collin County deadline, how the process works, what evidence counts, what each option costs and where to file. Facts about Texas protest rules come from the Texas Comptroller and the Texas Tax Code, and district details come from the Comptroller's county directory and Collin CAD's own site. We checked them on September 30, 2026.
The Comptroller says the deadline to protest is, in most cases, May 15 or 30 days after the appraisal district delivers your notice of appraised value, whichever is later (Tax Code §41.44). Read the date on your notice rather than relying on a calendar. If the last day falls on a weekend, the deadline moves to the next business day (Tax Code §1.06), which matters in 2027 because May 15 is a Saturday. Confirm the exact date with Collin CAD when your notice arrives.
Late protests are possible only for narrow reasons, such as good cause shown before the ARB approves the appraisal records, so do not plan around them. See our Texas protest deadline guide.
The Comptroller's protest page explains each stage and the forms.
Collin CAD takes protests through its Taxpayer Portal at onlineportal.collincad.org, and also by the other methods listed on its site. Parts of some cities, such as Frisco, extend into Denton County, so check the district named on your notice. The Comptroller's Collin County directory listing shows the current district contact details.
A property owner can protest the value of the property, unequal appraisal, and the denial of an exemption, among other matters (Tax Code §41.41). The ARB decides on evidence, and the Comptroller notes the board cannot take your personal economic situation into account, and a protest must be about value, not the size of the tax bill. Bring recent sales of similar homes in your subdivision, equity comparisons with similarly valued properties, and documentation of anything that lowers market value, such as condition problems or nearby road or commercial impacts.
One limit to know: if your homestead is already under the 10% appraisal cap (Tax Code §23.23), a lower market value may not change your taxable value this year. See the 10% homestead cap explained and the Comptroller's valuation page.
| Option | Fee | Who does the work |
|---|---|---|
| File it yourself | Free | You file, gather evidence and present at informal review or the ARB |
| TaxDrop One | $129 per property per tax year, refunded if there is no reduction | You file and present using TaxDrop's pre-filled forms, sales and assessment data, and negotiation and hearing scripts; a tax consultant reviews your case |
| TaxDrop Pro | 1% of the assessment reduction; no fee if there is no reduction | A licensed TaxDrop agent registers as your agent, files, negotiates and presents at the ARB. Available in Collin County |
| Other protest companies | Varies by firm; many charge a percentage of tax savings | Check each firm's own terms and county coverage; we compare them on our property tax protest companies page |
TaxDrop Pro covers Collin County. If you want to hand the whole protest to a licensed agent, it is the option to compare against the other firms.
Texas property tax consultants are licensed and regulated by the Texas Department of Licensing and Regulation (TDLR). You can look up any firm on tdlr.texas.gov before you sign an agent authorization. Full pricing is on the TaxDrop pricing page.
Here is an illustration with stated assumptions, not a prediction. Say a protest lowers your value by $30,000. At the county's median effective tax rate of 1.66% (U.S. Census Bureau data; your actual rate depends on your taxing units), that is about $498 in tax savings for the year.
Because Pro's fee is based on the value reduction, not on your tax savings, it is a bigger share of first-year savings where tax rates are lower. At this example, $300 is about 60% of the first-year tax savings. Compare it with a percentage-of-savings fee using your own numbers before you choose.
According to U.S. Census Bureau American Community Survey data, compiled in the TaxDrop data center, Collin County homeowners pay a median property tax of $7,432 on a median home value of $447,600, an effective rate of 1.66%. These are survey medians, not Collin CAD figures, and your own bill depends on your value, exemptions and taxing units.
TaxDrop serves property owners across Collin County, including Plano, McKinney, Frisco, Allen and Wylie.
Sign up and TaxDrop handles the paperwork, the evidence, and the filing. It takes less than 3 minutes to enroll.
Step 1: Read your notice.
Find the protest deadline and your market and appraised values.
Step 2: File a notice of protest.
File with Collin CAD before the deadline, online or on Form 50-132.
Step 3: Build your evidence.
Gather comparable sales, equity comparisons and condition documentation.
Step 4: Informal review.
Meet or exchange evidence with a district appraiser; many protests settle here.
Step 5: ARB hearing.
If you do not settle, present to the Appraisal Review Board. You get at least 15 days' notice.
Step 6: Decision.
The ARB issues a written order. You can appeal to district court within 60 days of receiving it.
Filing deadline:
What to bring:
Where to file:
Collin Central Appraisal District
250 Eldorado Pkwy., McKinney, TX 75069
Phone: 469-742-9200
collincad.org
Official resources:
May 15, or 30 days after Collin CAD mailed your Notice of Appraised Value, whichever is later. If the deadline falls on a weekend or holiday, it moves to the next business day. Use the date printed on your notice.
Source: collincad.org, comptroller.texas.gov
File by mail, in person, at the 24/7 drop box, or online through the appraisal district's eFile site if your notice includes a secure eFile PIN. The Collin ARB does not accept protests by fax or email.
Source: collinarb.org
The Collin ARB schedules your hearing and notifies you at least 15 days ahead. Bring evidence such as comparable sales, appraisals, photos and contracts. If you disagree with the ARB's order, you can appeal to district court within 60 days of receiving it, or use binding arbitration or SOAH if your property qualifies.
Source: collinarb.org, comptroller.texas.gov
A residence homestead gets a $140,000 school district exemption. Owners 65 or older or disabled get an additional $60,000 school exemption, and other taxing units may offer local options. Apply with Collin CAD on Form 50-114; the general deadline is before May 1. An exemption is separate from a protest, and you can have both.
Source: comptroller.texas.gov
Yes. TaxDrop Pro is full service in Collin County at 1% of the assessment reduction, and you pay only if we win. TaxDrop One is $129 per property per tax year, refunded if there's no reduction.