Quick answers: New accounts and current billing go through HCTRA at 281-875-3279, Monday to Friday 7 AM to 7 PM and Saturday 8 AM to 4:30 PM. Legacy TxTag balances from before November 9, 2024 still use 1-888-468-9824. The main Austin walk-in center is at 12719 Burnet Road, Austin, TX 78727.
Something big shifted with TxTag in late 2024. The Harris County Toll Road Authority (HCTRA) took over account management from TxDOT, and that change affects how every Texas driver handles their toll account in 2026. Whether you have an old TxTag, a new EZ TAG, or a billing question about Austin toll roads, this guide has every number, address, and hour you need.
- The 2024 Transition: What Changed and Why It Matters
- Phone, Web, and App: All Your Contact Options
- Austin Walk-In Service Centers
- Houston EZ TAG Stores
- Dallas-Fort Worth: NTTA Service Centers
- CTRMA Billing: A Separate System Entirely
- What TxTag Support Can Actually Help You With
- How to Dispute a Charge: Step by Step
- Transponder Installation: Get It Right the First Time
- Where Your Tag Works Outside Texas
- Watch Out for Toll Scams
- Your Texas Toll Checklist for 2026
The 2024 Transition: What Changed and Why It Matters
Before you call the wrong number or mail a check to the wrong address, you need to understand one key change that took effect on November 9, 2024.
TxDOT transferred TxTag account management to HCTRA. The reason was straightforward: about 60 percent of all TxTag transactions were already happening on HCTRA-managed roads. Centralizing everything under HCTRA just made sense. The technology behind the move came from Quarterhill’s RiteHorizon system, which migrated millions of accounts without interrupting service.
Here is what that means for you:
- Accounts and transactions after November 9, 2024 are managed by HCTRA at hctra.org
- Outstanding balances before November 9, 2024 are still handled through the legacy TxDOT line at 1-888-468-9824
- TxTag branding still exists, but HCTRA is now the financial administrator behind it
Phone, Web, and App: All Your Contact Options
Most issues get resolved without leaving your house. Here are all the ways to reach support in 2026.
Primary Support (HCTRA)
For any account created after November 9, 2024, or any trip taken after that date, HCTRA is your contact point.
| Contact Method | Details | Availability |
|---|---|---|
| Phone | 281-875-3279 | Mon to Fri: 7 AM to 7 PM / Sat: 8 AM to 4:30 PM |
| Website | hctra.org | 24 hours, 7 days a week |
| Mobile App | EZ TAG (iOS and Android) | 24 hours, 7 days a week |
| Roadside Assistance | 281-584-7500 | 5 AM to Midnight, 7 days a week |
Legacy TxTag Support (TxDOT)
If your issue involves a toll taken before November 9, 2024, do not contact HCTRA. These accounts are managed separately through TxDOT.
| Contact Method | Details |
|---|---|
| Phone | 1-888-468-9824 |
| Pay By Mail Inquiries | 512-874-9000 |
| Mailing Address | TxTag, P.O. Box 650749, Dallas, TX 75265-0749 |
Pro tip: When mailing a legacy payment, always write your TxTag account number on the memo line of your check or money order. This prevents your payment from being applied to the wrong account.
Austin Walk-In Service Centers
Austin has two physical service locations in 2026. Each one handles slightly different issues, so knowing which to visit saves you a wasted trip.
Burnet Road Service Center (Main Location)
This is the primary walk-in hub for Austin-area drivers. Following the HCTRA transition, this location now houses both TxTag and CTRMA service counters under one roof.
| Detail | Information |
|---|---|
| Address | 12719 Burnet Road, Austin, TX 78727 |
| Monday to Friday | 7:00 AM to 7:00 PM |
| Saturday | 8:00 AM to 4:30 PM |
| Sunday | Closed |
| Payment Methods | Cash, Check, Money Order, Credit Card |
| Services | Tag Issuance, Account Reload, Violation Resolution |
The Saturday hours are genuinely useful for working Texans who cannot make it during the week. That said, CTRMA-specific counters within this building often close earlier on Saturdays, around 2:00 PM. Call ahead if your visit is specifically for a CTRMA billing matter.
Rutherford Lane Walk-Up Center (CTRMA)
This second Austin location is managed by the Central Texas Regional Mobility Authority. It primarily handles billing for CTRMA roads like MoPac Express Lanes and 183A Toll.
| Detail | Information |
|---|---|
| Address | 1321 Rutherford Lane, Suite 120, Austin, TX 78753 |
| Monday to Friday | 7:00 AM to 7:00 PM |
| Saturday | 9:00 AM to 2:00 PM |
| Sunday | Closed |
| Core Services | Billing Inquiries, Payment Processing, Account Maintenance |
Important: The Mobility Authority’s administrative headquarters on IH-35 does NOT accept bill payments. Only visit the Rutherford Lane location if you need to pay in person.
Houston EZ TAG Stores
Since HCTRA now runs TxTag, Houston plays a bigger role in the statewide support network. EZ TAG stores are spread across the metro area along major toll corridors.
A key location is the East EZ TAG Store at 3343 East Sam Houston Parkway South, Pasadena, TX 77505, which opened specifically to serve the eastern corridors of Harris County.
Standard hours across Houston EZ TAG stores:
- Monday through Friday: 7:00 AM to 7:00 PM
- Saturday: 8:00 AM to 4:30 PM
- Sunday: Closed
These stores handle new EZ TAG setups, vehicle replacements, and account transitions for former TxTag users. Visit hctra.org for the full list of Houston-area locations.
Dallas-Fort Worth: NTTA Service Centers
In North Texas, the North Texas Tollway Authority (NTTA) manages toll roads and supports TxTag and EZ TAG users traveling through the region. NTTA maintains reciprocal agreements with HCTRA and operates several full-service centers across DFW.
| Location | Address | Mon to Fri | Saturday |
|---|---|---|---|
| Plano | 5900 W. Plano Pkwy, Plano, TX 75093 | 8 AM to 6 PM | 9 AM to 5:30 PM |
| Irving | 5555 President George Bush Turnpike, Irving, TX 75038 | 8 AM to 6 PM | 9 AM to 5:30 PM |
| Fort Worth | 4825 Overton Ridge Blvd, Suite 304, Fort Worth, TX 76132 | 8 AM to 6 PM | 9 AM to 5:30 PM |
| Mesquite | 2110 N Galloway Ave #120, Mesquite, TX 75150 | 8 AM to 6 PM | 9 AM to 5:30 PM |
| Dallas | 39025 LBJ Service Road, Dallas, TX 75232 | 8 AM to 5 PM | Closed |
NTTA also offers an Ombudsman service for impartial reviews of unresolved complaints. Reach them at 469-801-3662 or [email protected]. For roadside safety on DFW toll roads, dial #999 from your mobile phone.
CTRMA Billing: A Separate System Entirely
If your invoice comes from the Mobility Authority rather than HCTRA, you need to contact CTRMA directly. These are two separate billing systems with two separate portals.
Check your invoice header before doing anything. It will say either “EZ Invoice” (that is HCTRA) or “Mobility Authority” near the top. Paying through the wrong portal will not clear your balance.
CTRMA contact options:
- Phone: (833) 762-8655 or (512) 410-0562 (local)
- Online Portal: PayMobilityBill.com
- In Person: Rutherford Lane Walk-Up Center (see Austin section above)
What TxTag Support Can Actually Help You With
Knowing what to expect before you call saves time for everyone. Here are the most common issues TxTag and HCTRA support handle daily:
- Incorrect or disputed toll charges
- Missed toll payments on an active account
- Auto-pay failures or expired payment methods
- Transponder malfunction or replacement
- New account setup and vehicle registration
- Adding or removing vehicles from an account
- Closing an account and requesting a deposit refund
- Migrating a legacy TxTag account to the HCTRA system
Online account management at hctra.org handles most of these without any hold time. Phone and in-person visits work best when document verification or a physical tag swap is required.
How to Dispute a Charge: Step by Step
Got a charge that does not look right? Here is exactly what to do.
- Log into your account at hctra.org
- Find the transaction under your billing history
- Select the dispute option and fill out the form
- Alternatively, call HCTRA at 281-875-3279 and request a dispute review
- For legacy accounts (before November 9, 2024), call 1-888-468-9824 instead
- If supporting documents are needed, mail them to the legacy TxTag P.O. Box
HCTRA typically resolves disputes within 10 to 15 business days. Keep screenshots of the transaction and any confirmation numbers you receive.
Transponder Installation: Get It Right the First Time
A poorly placed tag causes missed reads at toll points. That triggers “Pay By Mail” invoices, which cost more than using your account balance. Correct installation takes about two minutes.
Follow these placement guidelines from TxDOT and HCTRA:
- Place the tag on the inside of the windshield
- Position it about four inches from the top edge, centered behind the rearview mirror
- Keep it away from metallic window tints and dashcams, which can block the signal
- Apply the tag when temperatures are above 50 degrees Fahrenheit for proper adhesive bonding
Do not move or peel off your tag. Tags are designed for a single vehicle. Removing one damages the embedded microchip and makes it non-functional. Order a replacement through hctra.org or pick one up at any walk-in center.
Where Your Tag Works Outside Texas
A properly managed TxTag or EZ TAG account gives you interstate coverage in several states. Here is the current picture for 2026:
| Region | Partner System | Coverage |
|---|---|---|
| Texas | TxTag, EZ TAG, TollTag | Full |
| Oklahoma | Pikepass | Full |
| Kansas | K-Tag | Full |
| Colorado | ExpressToll | Partial (select roads only) |
| Florida | SunPass | Partial (select roads only) |
Always keep your vehicle and license plate information current in your account. Plate-match errors are one of the top causes of incorrect billing when traveling across state lines.
Watch Out for Toll Scams
The move to a digital toll system has brought a surge in phishing and SMS scams targeting Texas drivers. Knowing what legitimate communication looks like keeps your account safe.
TxTag, HCTRA, and the Mobility Authority will never ask for personal or financial information through a text message about a past due balance. Any unsolicited link in a text claiming to be a toll payment portal is almost certainly a scam.
Legitimate Mobility Authority texts only come from these verified numbers:
- 38047
- 27974
- 87038
- 833-501-1743
- 512-575-3160
If you receive a suspicious text, call HCTRA directly at 281-875-3279 to check your account before clicking anything. Fraudulent activity can also be reported to the FBI’s Internet Crime Complaint Center at ic3.gov.
Your Texas Toll Checklist for 2026
The HCTRA transition made the Texas toll system more organized than it has ever been. Before your next call or visit, run through this quick list:
- Confirm your migration: Log into hctra.org to make sure your old TxTag account transferred successfully
- Check your tag position: It should sit at least four inches from the top of the windshield and should never have been moved
- Pre-November 2024 bills: Always use the legacy line at 1-888-468-9824, not HCTRA
- Austin billing: Check your invoice header to determine whether to call HCTRA or CTRMA
- Suspicious texts: Never click payment links in unsolicited messages. Always go directly to hctra.org or PayMobilityBill.com
Texas roads are long enough on their own. At least now you know exactly who to call when things go sideways
Pavithra Vinoth is the founder of nytollsinfo.com, where she simplifies U.S. toll systems through expert insights and custom-built calculators. Her research-driven tools help drivers avoid costly mistakes and make smarter car decisions.