Collin County Tax Assessor-Collector 2026: Search & Pay

Collin County, Texas • tax collection guide • verified August 17, 2026

Find the Tax Account, Then Take the Right Action

Use the Collin County Tax Assessor-Collector for property-tax statements, balances, payments, receipts, refunds and tax certificates. Use Collin CAD when the problem is appraised value, ownership data, exemptions or a protest.

This guide shows how to search by owner or address, understand the tax bill, pay safely, handle escrow or partial payments, use McKinney services, fix delinquency problems and separate ordinary tax payment from legal property ownership.

Search Instructions Payment Steps McKinney Office

Statements Usually October Tax bills are due upon receipt.

Search fields Owner / address / account Use the county tax lookup for bill and payment information.

Property-tax help 972-547-5020 Use for statements, balances and property-tax questions.

Office hours 8:00–4:30 Current Frisco, McKinney and Plano weekday hours.

Which Collin County Office Controls Your Problem?

Tax Assessor-Collector

Tax bills, account lookup, payments, receipts, partial payments, refunds, tax certificates, delinquency and tax-sale bidder statements.

Collin CAD

Market/appraised value, taxable owner and mailing address, exemptions, property characteristics and appraisal protests.

County Clerk

Recorded deeds, liens, releases, plats and other documents used to research legal ownership or title history.

Fast routing rule: “What do I owe?” goes to the Tax Office. “Why is my value or exemption wrong?” goes to Collin CAD. “Who legally owns it according to the deed?” requires recorded land records.

Independent guide: AssessorPropertySearch.org is not Collin County, Collin CAD or an official payment processor. Never send this site bank information, eFile PINs or identity documents.

Search Collin County Property Taxes by Owner or Address

Use the county Tax Account Lookup when your goal is a tax statement, balance, payment status or account record. Do not use the appraisal search as a substitute for the collection account.

Open the official tax lookup

Start from the county’s tax-search portal rather than a search-engine advertisement or private “property records” page.

Use the strongest identifier you have

An account or statement identifier is usually cleaner than an owner-name search. Otherwise use owner or property location.

Match the physical property

Confirm address, owner, account and tax year. Common surnames can produce several Collin County properties.

Review the balance before paying

Check whether you are viewing a current bill, already-paid account or older delinquent amount.

Save the account number

Use the same number when mailing a check, contacting the Tax Office or verifying payment later.

Official Collin County tax account lookup Open Tax Account Lookup

Owner Name, Mailing Address or Property Location?

Field	What to enter	Common mistake	Better retry
Account Number	Property-tax account number from a statement.	Entering a deed instrument number.	Owner or property location.
Owner Name	Last name followed by first name or initial.	Entering the full name in a different order.	Surname only, then verify by address.
Owner Address	The owner’s mailing address.	Using the physical property location.	Switch to Property Location.
Property Location	Street number + street name.	Adding direction and street type.	Use a simpler form such as 2300 Bloomdale.
Statement / appraisal identifier	Exact identifier from the official record.	Mixing CAD, deed and tax identifiers.	Return to owner/address lookup and confirm the parcel.

Physical-address tip: the county search guidance says not to include the street type or direction when using Property Location. Owner Address is a different field and means the mailing address.

What Should Be on a Texas Property Tax Bill?

The Texas Comptroller’s current bill guidance helps you detect when you are looking at an appraisal record instead of the actual tax statement.

Bill item	Why it matters	What to verify
Property identification	Confirms which parcel/account is being taxed.	Address, description and account number.
Appraised / assessed / taxable value	Shows how the taxable base was built.	Compare exemption-adjusted taxable values with CCAD.
Exemptions	Partial exemptions can reduce taxable value.	Expected homestead, over-65, disability or veteran treatment.
Tax rate	Each applicable taxing unit can impose its own rate.	Do not confuse the Collin County rate with the total combined levy.
Amount due	This is the collection amount rather than merely the appraised value.	Tax year and prior payments.
Due and delinquency dates	Control when penalty and interest may start.	Use the dates printed on your particular bill.
Penalty / interest information	Explains consequences of delinquent payment.	Special bills can have different delinquency rules.

No bill does not mean no tax. Texas law provides that failing to receive a bill does not invalidate the tax, penalty, interest, due date or tax lien. If your statement is missing, search the account rather than waiting indefinitely.

How to Pay Collin County Property Taxes Safely

Locate the official account

Search by account number, owner or property location.

Confirm four items

Verify account number, property address, tax year and current balance before opening the payment option.

Check whether escrow should pay

If a mortgage servicer normally pays your taxes, verify that responsibility before paying the same bill yourself.

Choose full or partial payment

The county allows partial payments, but unpaid amounts remain subject to the applicable delinquency rules.

Use an official payment route

Pay through the county-linked service, by check using the statement instructions or at one of the three Tax Office locations.

Save proof and verify posting

Keep the payment date, amount, account number and confirmation until the official balance reflects the payment.

2026 Collin County Property-Tax Billing Calendar

January 1, 2026

A Texas property-tax lien automatically attaches to taxable property for the year’s taxes. Appraisal and exemption administration belongs to Collin CAD.

Spring and summer 2026

CCAD values property, handles exemptions and resolves appraisal issues. Taxing units then work through their budget and rate-adoption processes.

October 2026

Texas law generally calls for tax bills to be mailed by October 1 or as soon thereafter as practicable. Collin County says its statements are mailed in October and are due upon receipt.

November 1 missing-statement checkpoint

Collin County tells taxpayers who still have no statement to contact the Property Tax Office or use Tax Account Lookup.

January 31, 2027 statutory reference

This date is a Sunday. Under Texas Tax Code weekend rules, an act due that day can be performed on the next regular business day.

February 2027

Use the exact delinquency date printed on the bill. The Comptroller’s Sunday example treats Monday, February 1 as timely and Tuesday, February 2 as delinquent when January 31 falls on Sunday.

Important correction: the county Property Taxes webpage still contains “January 31, 2026.” That is not the penalty-free deadline for the later 2026 tax-year statement. Use the 2026 statement and current Texas deadline rules.

Texas Comptroller — property tax bill rules Review Bill & Delinquency Rules

What if the Tax Bill Is Mailed Late?

January 31 is not the correct deadline for every type of Texas property-tax bill.

Original bill mailed on time

The usual annual cycle applies, subject to weekend/holiday adjustments.

Original bill mailed after January 10

Texas Comptroller guidance says the delinquency date is postponed to the first day of the next month that gives the taxpayer at least 21 days to pay.

Why this matters: omitted-property bills, corrected bills, installment arrangements, deferrals and other special bill types can use different delinquency rules. Read the date on the actual bill before calculating a penalty.

Property-Tax Payment Methods and Credit-Card Fee

Method	County guidance	Before paying
Online card	County-linked payment service.	Current FAQ lists a 2.10% credit-card service charge, minimum $1.
Electronic check	Available through the county’s payment service.	Confirm account, amount and any displayed processing terms.
Mailed check	Use the envelope/instructions supplied with the statement.	Write the property account number on the check and obtain a timely USPS postmark.
In person	All three Tax Office locations accept property-tax payments.	Current hours and office closures.

Mailing on the deadline: Collin County warns that a late January 31 USPS postmark can make the payment delinquent. Do not assume dropping an envelope into a box late that day guarantees the same-day postmark.

Partial Payments: What They Do and Do Not Do

Collin County allows taxpayers to make partial payments and says county, incorporated-city or school-district taxes may be paid separately.

How to identify a mailed partial payment

Write the property account number on the check.
Write “Partial Payment” in the remarks area.
Save proof of the amount paid.
Recheck the account for the remaining balance.

Partial does not mean extended

An unpaid remaining balance can still become delinquent after the applicable deadline and begin accruing penalty and interest.

Mortgage Escrow: Bill Arrived at Your House?

The Tax Office gives a specific workflow for a statement that should have gone to the mortgage company.

Verify your loan still has tax escrow

Check the latest mortgage statement or escrow analysis.

Write your loan number on the tax statement

This is the county’s recommended first step.

Send the statement to your mortgage company

Use the servicer’s approved property-tax document channel.

Notify the Tax Office in writing

Collin County specifically recommends written notification.

Confirm the servicer actually paid

Money collected into escrow is not the same thing as money already remitted to Collin County.

State rule: Texas allows a property-tax bill for escrowed property to be sent to the mortgage holder when the mortgage company acknowledges authority to pay the taxes.

Over-65 or Disabled Homeowner: Four Installments vs. Deferral

Four-installment option

This is limited to taxpayers with an Over-65 or Disabled Person exemption on the qualifying homestead residence.

¼ by January 31
¼ by March 31
¼ by May 31
¼ by July 31

If an installment is missed, the county warns that the full applicable penalty can accrue.

Tax deferral

Qualifying older or disabled homeowners can defer collection on their homestead with interest at 5% annually while the deferral remains valid.

The county says the lower-rate deferral cannot be applied retroactively to taxes already delinquent before the deferral period began.

These are not the same program. Installments divide the current tax into four scheduled payments; a qualifying deferral postpones collection while interest continues and the tax lien remains.

Collin County Property-Tax Refunds

Situation	Who initiates it?	County timing	Best preparation
Payment overage / overpayment	The remitter requests the refund.	About 6–8 weeks after the request is received.	Account, tax year, payer/remitter, amount and payment date.
Recalculated tax after CCAD change	Tax Office generates it after receiving the qualifying appraisal change.	Automatically mailed no later than 60 days after the county receives the change.	Make sure mailing information is current and monitor the corrected account.

Refund Department: 972-547-5067. Have the account number and original payment information ready before calling.

Official county property-tax/refund information Review Refund Guidance

Receipt, Written Statement or Tax Certificate?

These documents solve different problems.

Document	Use it for	What it proves	Key detail
Payment receipt	Routine proof that a specific payment was made.	Payment transaction/account posting.	Keep it for escrow, closing and tax records.
Written Statement	Formal tax-payment history or qualifying tax-sale bidder documentation.	Information requested on the county form.	Tax-sale bidder statement has separate notarization/validity rules.
Tax Certificate	Current status of taxes on a property.	Whether taxes shown in county records are current/delinquent and related P&I.	$10 per certificate under the current FAQ.

McKinney routing: all three Tax Offices accept ordinary property-tax payments, but Collin County says special requests such as Tax Certificates and SIT must be handled at McKinney.

Services Offered by the Collin County Tax Assessor-Collector

The property-tax operation collects ad valorem taxes for 43 taxing jurisdictions. Its work extends well beyond taking a check at the counter.

Service	Use it when	Where to start
Tax account lookup	Balance, statement or payment-status research.	Online Tax Account Lookup.
Property-tax collection	Current or delinquent payment.	Online, mail or Tax Office.
Partial payment	You want to pay less than the full amount now.	Follow the county’s partial-payment labeling instructions.
Refund	Duplicate/overpayment or a later appraisal recalculation.	Refund process / Refund Department.
Tax certificate	Formal current tax-status documentation.	McKinney office.
Address correction memorandum	Tax-bill mailing information needs correction.	Tax Office form plus underlying CCAD correction.
Tax-payment written statement	Formal history or another supported written tax record.	Services & Forms page.
Tax-sale bidder statement	You intend to bid at an official county tax foreclosure sale.	Property Tax Office before the sale.
Tax-roll data	Bulk current or delinquent tax research.	Property Taxes download section.
Special Inventory Tax	Dealer special-inventory reporting/payment.	SIT Department, McKinney.

Official Tax Assessor services and forms Open Services & Forms

Collin County Tax Assessor-Collector in McKinney, TX

McKinney Tax Office

Facility: Collin County Administration Building

Address: 2300 Bloomdale Road, McKinney, TX 75071

Property-tax phone: 972-547-5020

Current Tax Office hours: Monday–Friday, 8:00 a.m.–4:30 p.m.

Use McKinney for regular property-tax payments and special property-tax requests such as tax certificates and SIT matters.

Looking for office photos?

Search-engine and third-party directory photos can help you recognize the Administration Building, but photos may show a vehicle-services entrance, an old layout or outdated operating information.

Use the official county address and location directory for navigation. Use the Tax Assessor page—not a photo caption—to confirm hours and services.

Official county location directory Open Official Location

Frisco, McKinney and Plano

Office	Location	Current hours	Property-tax role
Frisco	6101 Frisco Square Blvd., Frisco, TX 75034	Mon–Fri, 8:00 a.m.–4:30 p.m.	Accepts ordinary property-tax payments.
McKinney	2300 Bloomdale Road, McKinney, TX 75071	Mon–Fri, 8:00 a.m.–4:30 p.m.	Payments plus special property-tax requests.
Plano	900 E. Park Blvd., Plano, TX 75074	Mon–Fri, 8:00 a.m.–4:30 p.m.	Accepts ordinary property-tax payments.

Wait-time warning: live wait-time cards on the Tax Assessor homepage are labeled for vehicle Registration and Vehicle Title. Do not treat them as verified property-tax counter wait times.

2026 closure planning: the Tax Assessor currently lists Labor Day (September 7), Veterans Day (November 11), Thanksgiving (November 26–27) and Christmas (December 24–25) among its remaining 2026 office closures.

How to Use the Collin County Tax Estimator Without Overstating the Bill

A Collin County parcel can be taxed by several entities. Selecting the wrong city, school district, water district or MUD can make an estimate meaningless.

Confirm the parcel’s actual taxing units

Use the tax/appraisal record rather than guessing which school, city or special district serves the property.

Select only applicable entities

The estimator includes county, city, school, water district, junior college and other special-district options.

Add the correct exemption category

The tool includes Homestead, Over 65, Disabled Person, Surviving Spouse and disabled-veteran categories.

Enter property value and calculate

Review each taxing unit individually rather than looking only at the total.

Use the final bill for the real amount due

Estimator output is planning information, especially while current-year rates are still moving through adoption.

Do not select every district. The estimator contains many MUD/MMD and other special districts. Only select entities that actually tax the parcel.

Official Collin County Tax Estimator Open Tax Estimator

What Happens When Collin County Property Taxes Become Delinquent?

For the ordinary annual bill, Texas imposes statutory penalty and interest after the applicable delinquency date. Special bill types can follow different schedules.

First delinquent month

The ordinary statutory schedule begins with a 6% penalty plus 1% interest, or 7% added to the unpaid base tax.

Amount increases monthly

Penalty and interest increase over time under the statutory schedule. Do not use a generic calculator when the account has a special delinquency date.

Collection attorney

Collin County warns that delinquent accounts can be referred for enforced collection and incur additional collection penalties.

P&I chart limitation: Texas Comptroller charts specifically say their standard percentages do not apply to every situation, including some late-mailed bills, installment arrangements and homestead deferrals.

Texas Comptroller delinquency guidance Check Current P&I Rules

Can You Claim Property by Paying the Property Taxes?

No. Paying someone else’s Collin County property-tax bill by itself does not transfer title to you.

Texas adverse-possession law contains several different limitation statutes. Under the five-year provision, paying applicable taxes is only one requirement: the person must also cultivate, use or enjoy the property and claim it under a duly registered deed.

Ordinary voluntary payment

The county can accept money toward a tax account without making the payer the legal owner. Ownership is determined through title/deed law, not the name on a payment receipt.

Tax foreclosure purchase

A successful purchase through the official judicial/constable tax-sale process is different because it involves a statutory sale and deed, with separate risks and redemption rights.

Do not DIY an adverse-possession claim from a tax receipt. Texas has multiple adverse-possession statutes and fact-specific requirements. Seek qualified legal advice when ownership is actually disputed.

Official Texas Civil Practice & Remedies Code Review Texas Adverse-Possession Law

Tax Foreclosure Sale: What Paying at the Auction Actually Buys

This is the legitimate property-purchase process that is often confused with simply paying another owner’s overdue bill.

Issue	Collin County rule / warning
Sale date	Sales are generally held on the first Tuesday of the month between 10 a.m. and 4 p.m.
Bidder eligibility	Bidder must obtain an unexpired Written Statement showing no delinquent Collin County, city or school taxes.
Written Statement	$10; request must be completed and notarized. County says the Tax Office can provide the notary.
Validity	The bidder Written Statement is valid for 90 days.
Sale payment	Cashier’s check, money order or cash under county sale procedures.
Condition	Property is sold “as is and where is” without county warranty.
Deed	Purchaser receives a Constable/Sheriff deed without warranty.
Tax-lien certificate	This is not a tax-lien-certificate sale; the real property is sold.
Redemption	County guidance identifies two years for qualifying homestead/agricultural property and 180 days for other property, beginning when the deed is filed.

Before bidding: research the deed, liens, court case, physical property, current taxes and title-insurance risk. The county expressly warns that title insurance may be difficult to obtain.

Official Collin County tax-sale information Review Properties for Sale

Do You Include Collin County Property Taxes on Your Federal Tax Return?

Possibly, if the payment qualifies and you itemize deductions. This section refers to the 2025 federal return being filed in 2026, because those are the current published Schedule A instructions.

Schedule A, line 5b

IRS instructions permit qualifying state and local real-estate taxes paid on nonbusiness real estate you own when the taxes meet the federal requirements.

The 2025 instructions set the general combined state-and-local-tax deduction limit at $40,000, or $20,000 for married filing separately, with reduction rules at higher income levels.

Escrow does not equal deduction

If your mortgage payment includes tax escrow, the IRS says you can include only the amount the mortgage company actually paid to the taxing authority in 2025, not simply the amount you deposited into escrow.

Do not automatically deduct every item on a bill

Itemized service charges to a specific property or person can be nondeductible.
Certain assessments for improvements that increase property value are not deductible as real-estate taxes.
Refunds or rebates can affect the deduction.
Prepaying a future year’s unassessed tax does not automatically create a current-year deduction.
Use the IRS instructions for the specific federal tax year you are actually filing.

Useful record: compare the Collin County payment history with your mortgage servicer’s escrow records before entering an amount on a federal return.

Official IRS Schedule A guidance Open Schedule A Instructions

Downloadable Tax Roll and Delinquent Tax Data

Advanced users can obtain bulk county tax data instead of opening individual accounts one by one.

Tax Roll

The county describes the Tax Roll as a programmable file containing current taxpayers for the most recent tax year plus delinquent taxpayers for current and prior years.

Delinquent account history can extend as far back as 20 years.

Delinquent Tax Roll

The delinquent file focuses on property accounts with delinquent taxes as of the date the roll was processed.

The county publishes these for data use rather than as a polished consumer-search interface.

Typical fields include

Property account number.
Taxpayer name and address.
Taxable value.
Exemption data.
Tax levy information.
Real, business personal and other supported property types.

Developer/data-user warning: the county describes these as fixed-width ASCII programmable files and does not provide technical support or interpretation for the data.

Sold the Property but Still Received the Tax Bill?

The county FAQ says the person who owned the property on January 1 is personally liable for that tax year’s tax, while the tax lien follows the property.

Seller

Keep the closing statement.
Check how taxes were prorated between buyer and seller.
Confirm whether the Tax Office account has been paid.
Contact CCAD if appraisal ownership information is stale.

Buyer

Confirm the deed recorded.
Check current/prior tax balances.
Verify escrow responsibility with the lender.
Do not assume a closing proration itself paid the county bill.

Fix Common Collin County Property-Tax Problems

Problem	Likely cause	Best next step
No statement by November 1	Mailing, escrow or address issue.	Use Tax Account Lookup or call 972-547-5020.
Address search finds nothing	Property Location is over-formatted.	Remove street type and direction.
Owner search is too broad	Common surname or multiple holdings.	Verify by physical property location/account number.
Wrong mailing address on bill	Underlying appraisal mailing record is wrong.	Contact CCAD and use the Tax Office Address Correction Memorandum.
Wrong property value	Appraisal issue, not collection issue.	Use Collin CAD.
Mortgage company should have paid	Servicer did not request or receive the bill in time.	Send statement to servicer, notify Tax Office and verify posting.
Payment not posted	Processing delay, wrong account or returned payment.	Use confirmation number, amount and payment date when contacting the Tax Office.
Overpayment	Duplicate payment or excess remittance.	Remitter requests refund; county says typical processing is 6–8 weeks.
CCAD lowered taxable value after payment	Recalculation reached Tax Office after original payment.	Monitor automatic recalculated refund; county says within 60 days after receiving CAD change.
Trying to own land by paying taxes	Confusion with adverse possession/tax sale.	Do not treat payment receipt as title; research the legal ownership route.

Have This Information Ready Before Calling

Balance / payment

Account number.
Property address.
Tax year.
Amount and payment date.
Payment confirmation.

“I need to verify the balance or payment on account [number] for tax year [year]. My payment was [amount] on [date].”

Escrow

Account number.
Loan number.
Mortgage servicer.
Statement date.
Expected payment date.

“My servicer is supposed to pay this account through escrow. Has a payment posted, and what balance remains?”

Refund

Account number.
Tax year.
Remitter name.
Payment date/amount.
Reason refund is expected.

“I am checking a [payment overage / appraisal recalculation] refund for account [number].”

Official Collin County Property-Tax Actions

The article explains each process first. Use these official links for the live lookup, payment, form, estimate or final government action.

Search tax account

Find tax records by owner, location or account information.

Tax Account Lookup

Property taxes

County payment, refund and tax-data information.

Property Taxes

Services & forms

Address correction, written statement, refund and other Tax Office forms.

Services & Forms

Property-tax FAQ

County answers for partial payment, escrow, P&I, deferrals and certificates.

Property-Tax FAQ

Tax estimator

Select applicable taxing units, exemptions and property value.

Tax Estimator

Tax foreclosure sales

Bidder statement, sale rules, deed and redemption warnings.

Properties for Sale

Collin CAD

Values, ownership appraisal records, exemptions and protests.

Collin CAD

Texas bill rules

State bill contents, delinquency dates and special bill rules.

Texas Comptroller

McKinney directions

Verify the Administration Building address before traveling.

Official Locations

Collin County Tax Assessor-Collector FAQs

How do I search Collin County property taxes by owner name?

Use the official Tax Account Lookup and search the Owner Name field. Start with the owner’s last name followed by the first name or initial. If several accounts appear, verify the correct property using its physical location and account number.

How do I search Collin County property taxes by address?

Use Property Location for the physical address. Enter the street number and street name without the street type or direction on the first attempt. Owner Address is a separate field for the owner’s mailing address.

Where can I pay Collin County property taxes?

You can use the county-linked online payment service, mail payment according to the statement instructions or pay at the Frisco, McKinney or Plano Tax Office. Special requests such as tax certificates and SIT are handled through McKinney.

When are 2026 Collin County property taxes due?

Statements are normally mailed in October and taxes are due upon receipt. January 31 is the normal statutory last-day reference, but January 31, 2027 is Sunday. Texas’s weekend rule generally makes an act due that day timely on the next business day. Follow the exact delinquency date printed on your bill because late-mailed and special bills can differ.

Can I make partial Collin County property-tax payments?

Yes. The county permits partial payments and says county, incorporated-city or school-district taxes can also be paid separately. Any unpaid amount remains subject to the applicable delinquency, penalty and interest rules.

What if my mortgage company is supposed to pay the property taxes?

If you receive the statement, Collin County says to write your loan number on it, immediately forward it to the mortgage company and notify the Tax Office in writing. Then verify that the servicer actually paid the county account.

Can I claim a Collin County property just by paying its taxes?

No. Paying another person’s property-tax bill alone does not transfer title. Texas adverse-possession laws require additional legal elements, and an official tax foreclosure purchase is a separate statutory sale process.

Do I include Collin County property taxes when filing federal income taxes?

Qualifying real-estate taxes may be included as a Schedule A itemized deduction under IRS rules. For the 2025 return filed in 2026, an escrow taxpayer may include only the amount the mortgage company actually paid to the taxing authority during 2025. Use the IRS instructions for the specific federal tax year you are filing.

Where is the Collin County Tax Assessor-Collector office in McKinney?

The McKinney Tax Office is in the Collin County Administration Building at 2300 Bloomdale Road, McKinney, TX 75071. The current Tax Assessor page lists Monday through Friday hours of 8:00 a.m. to 4:30 p.m.

What property-tax services does the Collin County Tax Assessor-Collector provide?

The office handles tax account lookup and collection, payments, partial-payment processing, refunds, tax certificates, written tax statements, address-correction forms, delinquency information, bulk tax-roll data, tax-sale bidder statements and Special Inventory Tax administration. Appraisal values, exemptions and protests are handled by Collin CAD.

Search the Account Before You Pay

The safest Collin County workflow is simple: locate the official tax account, verify the physical property and tax year, decide whether you or a mortgage servicer should pay, use an official payment method, save the receipt and confirm posting.

If the tax amount is wrong because the appraised value or exemption is wrong, switch to Collin CAD. If legal ownership is the issue, use recorded land records. A tax payment, an appraisal record and legal title are different things.