California toll roads use three payment systems, and which one you use depends on which road you're driving

California has three separate toll road operators, each with its own payment method. The FasTrak system covers most toll roads in Northern California and the Bay Area. ExpressAccount handles toll roads in San Diego County. Pay-As-You-Go lets you pay by mail or online after you drive, and works on all three systems. You do not have to set up an account in advance—you can pay after the fact—but having an account beforehand saves money because toll rates are lower for account holders than for pay-later drivers.

The toll roads themselves are operated by different agencies: the Bay Area Toll Authority runs the Golden Gate Bridge, Bay Bridge, and other Bay Area crossings; the San Diego Association of Governments (SANDAG) runs I-15 Express and State Route 125; and the Orange County Transportation Authority (OCTA) runs the 73, 133, and 241 toll roads in Orange County. Each has its own toll booth or electronic reader, but the payment methods overlap enough that you can use one account across multiple roads in the same region.

Key Takeaways

  • FasTrak is the payment system for Bay Area and Northern California toll roads; ExpressAccount is for San Diego toll roads; both offer lower rates than paying after you drive.
  • You can pay tolls after driving by mail or online without setting up an account first, but you will pay a higher per-crossing rate.
  • FasTrak accounts require a transponder (a small radio device you mount on your windshield) and a prepaid balance; you can order one online or by phone.
  • If you do not have an account and drive a toll road, the toll agency will photograph your license plate and send you an invoice by mail within two weeks.
  • Rental cars and borrowed vehicles can use Pay-As-You-Go without any setup, though the toll rate is higher than account rates.

FasTrak: The Northern California and Bay Area system

FasTrak is the prepaid account system for toll roads in the Bay Area and Northern California, including the Golden Gate Bridge, Bay Bridge, Carquinez Bridge, Benicia Bridge, Dumbarton Bridge, and Antioch Bridge. To use FasTrak, you need a transponder—a small radio device about the size of a thick credit card that you mount on your windshield. When you drive through a toll plaza, the transponder communicates with the reader and deducts the toll from your account balance automatically.

You can order a FasTrak transponder online at www.bayareafastrak.org or by calling 1-888-FASTRAK (1-888-327-8725). You will need a valid California driver's license or ID, a vehicle license plate number, and a payment method (credit card, debit card, or bank account). The transponder itself costs nothing, but you must set up a prepaid account with a minimum opening balance. The minimum varies—typically $25 to $50 depending on the toll road—and you can add money to the account online, by phone, or by mail at any time.

FasTrak rates are lower than Pay-As-You-Go rates. For example, crossing the Bay Bridge with a FasTrak account costs less than crossing without one. If your account balance drops below a certain threshold (usually $10), FasTrak will automatically charge your payment method to refill it, so you do not run out of money mid-drive. You can set up automatic replenishment or manage your balance manually.

ExpressAccount: The San Diego toll road system

ExpressAccount is the prepaid system for toll roads in San Diego County, including I-15 Express, State Route 125, and the Coronado Bridge toll lanes. Like FasTrak, ExpressAccount uses a transponder mounted on your windshield. You can open an account online at www.sdexpressaccount.com or by calling 1-888-889-ROAD (1-888-889-7623).

The setup process is similar to FasTrak: you provide a driver's license, vehicle plate number, and payment method, then set a prepaid balance. ExpressAccount also offers automatic replenishment so your account does not run empty. Rates for ExpressAccount holders are lower than rates for drivers who pay after the fact. If you drive a San Diego toll road without an account, the toll agency will photograph your plate and send you an invoice by mail.

Pay-As-You-Go: Paying tolls after you drive

If you do not have a FasTrak or ExpressAccount transponder, you can still drive toll roads and pay later. The toll agency photographs your license plate as you pass through, then mails you an invoice within 7 to 14 days. You can pay the invoice by mail, phone, or online using the payment instructions on the bill. This method is called Pay-As-You-Go and requires no advance setup.

The trade-off is cost: Pay-As-You-Go rates are significantly higher than account rates. For example, a Bay Bridge crossing might cost $6.15 with FasTrak but $7.15 without an account. This difference applies to every crossing, so frequent drivers save money by opening an account. Pay-As-You-Go is most practical for occasional drivers or people using rental cars and borrowed vehicles.

If you receive a Pay-As-You-Go invoice and do not pay it within the due date (usually 21 days), the toll agency will send a reminder notice. Unpaid tolls can result in late fees, vehicle registration holds, and collection action. If you believe an invoice is incorrect—for example, if you were not driving that vehicle on that date—you can dispute it by contacting the toll agency directly with evidence (such as a receipt showing you were elsewhere, or proof the vehicle was not in your possession).

Transponders, plates, and what happens if you lose your transponder

A FasTrak or ExpressAccount transponder is tied to your account and your vehicle. If you sell the vehicle, you should remove the transponder and either transfer it to a new vehicle or close the account. If you keep the transponder on a sold vehicle, tolls will still be charged to your account because the transponder, not the plate, is what the toll reader recognizes.

If your transponder is lost, stolen, or damaged, contact the toll agency to report it. FasTrak can issue a replacement transponder, usually within 5 to 10 business days. You can request expedited shipping for an additional fee. Until the replacement arrives, tolls on that vehicle will be charged as Pay-As-You-Go (the higher rate) unless you remove the transponder from the vehicle entirely.

If you drive a vehicle without a transponder and want to avoid Pay-As-You-Go invoices, you must use a different route that does not have tolls, or you must open an account and install a transponder before driving the toll road again.

Multiple vehicles and household accounts

You can add multiple vehicles to a single FasTrak or ExpressAccount account. Each vehicle gets its own transponder, and all tolls are charged to the same account balance. This is useful for households with multiple drivers or for businesses with fleets. When you add a vehicle, provide the new license plate number and the toll agency will issue a transponder for that vehicle.

If you have multiple vehicles but only one transponder, you can move the transponder from vehicle to vehicle, but this is impractical for daily driving. The toll reader recognizes the transponder, not the plate, so the toll will be charged correctly regardless of which vehicle is carrying it—but you would have to physically move the device each time you switch vehicles.

Tolls for commercial vehicles and oversized loads

Commercial vehicles and oversized loads may have different toll rates or restrictions on certain toll roads. For example, some toll roads charge higher rates for trucks or vehicles towing trailers. Check the specific toll road's website or call the toll agency before driving to confirm whether your vehicle qualifies for a commercial rate and whether you need special authorization.

If you operate a commercial fleet, both FasTrak and ExpressAccount offer commercial accounts with features like detailed reporting and higher account limits. Contact the toll agency's commercial department for details.

Frequently Asked Questions

Do I have to pay tolls on every California highway?

No. Most California highways are free. Tolls are charged only on specific toll roads and bridges operated by regional agencies. The main toll roads are in the Bay Area, Orange County, and San Diego County. You can check whether a specific route has tolls by looking at the toll agency's website or using a GPS app that shows toll roads.

What happens if I drive a toll road without a transponder and do not pay?

The toll agency will photograph your license plate and mail you an invoice within two weeks. If you do not pay by the due date, late fees are added and the toll agency can place a hold on your vehicle registration renewal. The debt can also be sent to a collection agency.

Can I use a FasTrak transponder from the Bay Area on a San Diego toll road?

No. FasTrak and ExpressAccount are separate systems. A FasTrak transponder will not work on San Diego toll roads. If you drive both regions regularly, you would need to open both accounts and carry two transponders, or use Pay-As-You-Go on whichever system you do not have an account with.

How do I know what toll rate I will pay?

Toll rates vary by road, time of day, and account type. Check the toll agency's website for current rates. FasTrak and ExpressAccount rates are lower than Pay-As-You-Go rates. Some toll roads also have variable pricing, meaning the rate changes based on traffic conditions. The toll agency's website will show the current rate before you drive.

Can I get a refund if I overpay my toll account?

Yes. If your account has a balance remaining when you close it or transfer the transponder to a new vehicle, you can request a refund. Contact the toll agency with your account number and they will process the refund to your original payment method, usually within 4 to 6 weeks.