EZ Tag Pay by Plate lets you use toll roads in Texas without a transponder
Pay by Plate is a system that reads your vehicle's license plate as you drive through a toll plaza and bills you later. You do not need to buy or install a physical EZ Tag transponder. Instead, the toll authority photographs your plate, matches it to your vehicle registration, and sends an invoice to the address on file with the Texas Department of Motor Vehicles.
This system is run by the Harris County Toll Road Authority (HCTRA) and covers toll roads in the Houston area, including the Sam Houston Tollway, Hardy Toll Road, and Westpark Tollway. If you drive these roads regularly without a transponder, you will be billed through Pay by Plate whether you sign up in advance or not.
The main difference between Pay by Plate and a traditional EZ Tag transponder is convenience versus cost. A transponder gives you a small discount on each toll (usually 10 to 15 percent), but Pay by Plate charges the full posted rate. However, Pay by Plate requires no equipment, no account setup, and no monthly fees.
Key Takeaways
- Pay by Plate automatically bills your vehicle's registered owner through the mail; you do not need to open an account beforehand.
- You will pay the full toll rate, which is higher than the transponder discount rate, but there are no monthly fees or equipment costs.
- Invoices arrive by mail at the address registered with the Texas DMV, typically within two to three weeks of driving the toll road.
- You can set up an online account to view your toll history, update your mailing address, and pay invoices before they arrive.
- If your vehicle registration changes or you move, update your information with the DMV so invoices reach you at the correct address.
How the system identifies your vehicle and sends the bill
When you drive through a toll plaza without a transponder, a camera captures your license plate. The HCTRA runs that plate number against the Texas DMV database to find the registered owner's name and mailing address. That information is used to create an invoice, which is printed and mailed to you.
This process takes time. Most invoices arrive two to three weeks after you use the toll road. If you use the toll road multiple times in a month, you may receive one combined invoice or separate invoices depending on the toll authority's billing cycle.
The invoice shows the date you used the toll road, which plaza you passed through, and the toll amount. It includes payment instructions and a due date, usually 30 days from the invoice date. If you do not pay by the due date, late fees and penalties begin to accumulate.
Setting up an online account to track and pay tolls
You are not required to set up an account to use Pay by Plate, but doing so gives you control over your billing. Visit the HCTRA website (hctra.org) and select the option to create a Pay by Plate account. You will need your vehicle's license plate number and the ZIP code associated with your vehicle registration.
Once your account is active, you can log in to see a history of every toll you have used, view invoices before they arrive in the mail, and pay online when ready. This is useful if you want to avoid late fees or if you are unsure whether a toll was charged correctly.
You can also update your mailing address in your online account. This is important if you have moved recently, because invoices sent to an old address may not reach you, and unpaid tolls can result in registration holds or collection action.
What happens if you do not pay a Pay by Plate invoice
If an invoice goes unpaid past the due date, the HCTRA adds a late fee (typically $5 to $10 per invoice, depending on how late it is). If the account remains unpaid for several months, the debt can be referred to a collection agency, and the Texas DMV may place a hold on your vehicle registration renewal.
A registration hold means you cannot renew your license plates until the toll debt is paid. This can happen even if you did not receive the original invoice, so it is important to update your address with the DMV if you move.
If you believe an invoice is incorrect—for example, if you did not actually use that toll road or if you were charged twice for one passage—contact the HCTRA customer service line. They can review the photograph and toll records to investigate. Disputes must usually be filed within a set window (often 30 to 60 days), so do not wait if you think there is an error.
Switching from Pay by Plate to an EZ Tag transponder
If you use toll roads frequently, a transponder may save you money despite the upfront cost. A transponder costs around $15 to $25 and gives you a 10 to 15 percent discount on every toll. At that discount rate, a transponder pays for itself after roughly 10 to 20 toll passages, depending on the toll amount.
To get a transponder, visit an EZ Tag customer service center, order online through hctra.org, or pick one up at certain retail locations in the Houston area. Once you have a transponder, mount it on your windshield and link it to a prepaid account. You can load money onto the account online or set it to auto-replenish when the balance drops below a certain amount.
If you already have a Pay by Plate account and switch to a transponder, your transponder will take priority at toll plazas. You will stop receiving Pay by Plate invoices for tolls you pass through with the transponder active, though you may still receive invoices for any tolls you drove before the transponder was activated.
Differences between Pay by Plate and a transponder account
| Feature | Pay by Plate | EZ Tag Transponder |
|---|---|---|
| Equipment cost | None | $15–$25 |
| Monthly account fee | None | None (prepaid account only) |
| Toll rate | Full posted rate | 10–15% discount |
| Billing method | Invoice by mail | Prepaid account; auto-replenish available |
| Setup required | Optional (automatic if you drive) | Required |
| Time to receive bill | 2–3 weeks | Real-time (account balance updates when ready) |
What to do if your registration information is outdated
Pay by Plate relies on the Texas DMV to have your current mailing address. If you moved and did not update your address with the DMV, toll invoices will go to your old address and you may not know you owe money until a registration hold appears.
Update your address with the Texas DMV through their website (dmv.texas.gov) or by visiting a local DMV office. You can also update your address in your HCTRA Pay by Plate account if you have one set up, though this does not change your DMV registration—both must be updated.
If you have already missed invoices because of an address change, contact the HCTRA customer service line with your new address and ask them to reissue invoices or confirm your current contact information. Providing proof of your new address (such as a utility bill or lease) can speed up the process.
Frequently Asked Questions
Do I have to set up a Pay by Plate account before I use a toll road?
No. If you drive a toll road without a transponder, you will be billed automatically through Pay by Plate. Setting up an account online is optional but recommended so you can see your toll history and pay before late fees explore.
Can I dispute a toll charge if I think I was billed incorrectly?
Yes. Contact the HCTRA customer service line and explain the issue. They can review the photograph and toll records. Most disputes must be filed within 30 to 60 days of the invoice date, so contact them as soon as you notice the error.
What happens if I move and do not update my address with the DMV?
Invoices will be sent to your old address and you may not receive them. If tolls go unpaid, the Texas DMV can place a hold on your vehicle registration renewal. Update your address with the DMV and the HCTRA as soon as you move to avoid this.
Is Pay by Plate cheaper than getting a transponder?
Not if you use toll roads regularly. A transponder costs $15–$25 upfront but gives you a 10–15% discount on every toll. If you drive tolls more than 10–20 times per month, a transponder usually saves money. For occasional use, Pay by Plate is cheaper.
Can I use Pay by Plate in other states?
Pay by Plate is specific to the Harris County Toll Road Authority in Texas. Other states and toll authorities have their own systems. If you travel to other toll roads, check that state's toll authority website for their payment options.