SunPass is Florida's electronic toll collection system that charges your account when you drive through tolled roads
SunPass is a prepaid account system run by the Florida Department of Transportation. When you have an active SunPass account, a transponder mounted on your windshield communicates with toll plaza readers as you pass through. The toll amount is deducted from your account balance automatically. You do not stop at a booth or handle cash — the transaction happens in seconds at highway speed.
The system covers Florida's toll roads, including the Florida Turnpike, Suncoast Parkway, Sawgrass Expressway, and dozens of other state and regional toll facilities. If you drive a tolled road without an active SunPass account, the toll authority photographs your license plate and sends an invoice to the vehicle's registered owner, usually with a processing fee added.
SunPass accounts are free to open. You pay only for the tolls you use, plus any optional service fees if you choose them. The transponder itself is also free when you first open an account.
Key Takeaways
- SunPass accounts are opened online or by phone and require a valid driver's license, vehicle registration, and a payment method to fund your account balance.
- Your transponder must be mounted on your windshield in the correct position for readers to detect it; improper placement is the most common reason tolls are not deducted.
- You can add funds to your account online, by phone, or through automatic replenishment, which charges your card when your balance drops below a set amount.
- If you receive a toll invoice for a trip you made with an active SunPass account, you can dispute it through the toll authority's customer service line.
- SunPass works on most Florida toll roads, but some private toll roads and bridges may use different systems or require separate accounts.
Opening a SunPass Account and Getting Your Transponder
You can open an account on the official SunPass website (sunpass.com) or by calling 1-888-SUNPASS (1-888-786-7277). Online registration takes about 10 minutes. You will need your driver's license number, vehicle registration information, and a valid credit or debit card to fund your account.
When you open an account online, you can choose to have a transponder mailed to you at no charge, or you can pick one up at a SunPass customer service center. The mailing address you provide must be in Florida. If you are out of state, you can still open an account, but you will need to arrange pickup or have the transponder shipped to a Florida address.
Your initial account balance can be any amount from $25 to $500. This is not a deposit — it is the balance from which tolls are deducted. Once your account is active and your transponder arrives, you mount it on the inside of your windshield, centered and in the upper portion of the glass, away from tinting or reflective coatings.
How to Fund Your Account and Set Up Automatic Replenishment
You can add money to your SunPass account online, by phone, or through the SunPass mobile app. Online and app payments process when ready. Phone payments (1-888-786-7277) also process the same day. The minimum replenishment amount is $25.
Automatic replenishment is optional but common. You set a threshold balance — for example, $10 — and when your account drops below that amount, SunPass automatically charges your card for a preset amount, usually $25 to $100. This prevents your account from running empty and incurring a low-balance fee. You can turn automatic replenishment on or off at any time through your online account dashboard.
If your card is declined during an automatic replenishment attempt, SunPass will try again. If it continues to fail, your account may be suspended, and you will receive toll invoices by mail instead. Updating your payment method in your account settings prevents this interruption.
Transponder Placement and Why It Matters
The transponder must be mounted on the inside of your windshield, centered horizontally and positioned in the upper third of the glass. It should not be placed on the dashboard, rear window, or exterior of the windshield. Tinted windows, reflective coatings, or metal-tinted films can block the signal and prevent the reader from detecting your transponder.
If your transponder is not detected, the toll plaza camera will photograph your license plate, and you will receive an invoice by mail. This invoice includes the toll amount plus a $2.50 processing fee. If this happens repeatedly, contact SunPass customer service to verify your transponder is working and properly positioned.
SunPass offers a free transponder replacement if yours is damaged or lost. You can request a replacement online or by phone, and a new one will be mailed to you within 7 to 10 business days.
What Happens When You Drive Through a Toll Plaza
As you approach a toll plaza, your transponder communicates with the overhead reader. The toll amount is deducted from your account in real time. You do not need to slow down or take any action — the transaction is complete before you pass through the plaza. Your receipt is available in your online account history, which you can view anytime.
SunPass accounts show a detailed transaction history. Each entry lists the date, time, toll plaza location, toll amount, and your remaining balance. This record is useful if you need to dispute a charge or verify a trip for business purposes.
If you have multiple vehicles, you can add up to three transponders to a single SunPass account. Each transponder is linked to a specific vehicle registration, so tolls are always charged to the correct account.
Disputing a Toll Charge or Plate-Based Invoice
If you receive a toll invoice by mail and you believe it was charged in error — for example, you had an active SunPass account at the time — you can dispute it. Contact the toll authority listed on the invoice. For Florida Turnpike invoices, call 1-888-TURNPIKE (1-888-887-6745). For other toll roads, the invoice will list the correct customer service number.
When you dispute a charge, have your SunPass account number and transaction history ready. If your transponder was not detected due to a technical issue, the toll authority may waive the processing fee or the entire charge. If the dispute is denied, you can request a formal review or pay the invoice to avoid collection action.
Plate-based invoices (those sent to your vehicle's registered owner) typically include a 30-day payment window. If you do not pay within that time, late fees and collection notices may follow. Paying promptly or disputing within the stated timeframe prevents escalation.
SunPass on Private Toll Roads and Out-of-State Use
SunPass works on most Florida toll roads operated by the state and regional toll authorities. However, some private toll roads, bridges, and facilities use different systems. The Alligator Farm Toll Road and some private bridge crossings may require separate accounts or payment methods.
SunPass does not work on toll roads outside Florida. If you travel to Georgia, South Carolina, or other states with toll systems, you will need to use that state's system or pay cash at toll booths. Some states offer reciprocal agreements with Florida, but you must check each state's toll authority website for details.
If you frequently travel between states, consider opening accounts in each state's system or using a universal toll payment service if available. Paying by plate (receiving invoices by mail) is an option on most toll roads, though it typically includes processing fees.
Frequently Asked Questions
What if my transponder stops working?
Contact SunPass customer service at 1-888-786-7277 or through your online account. Describe the issue — tolls not being deducted, warning lights on the transponder, or physical damage. SunPass will troubleshoot or send you a free replacement. In the meantime, you may receive plate-based invoices, which you can dispute once your new transponder is active.
Can I use someone else's SunPass transponder in my car?
No. Each transponder is registered to a specific vehicle. If you use another person's transponder, tolls will be charged to their account, and the toll authority may flag the mismatch. Use only the transponder registered to your vehicle, or open your own account.
What if I sell my car or buy a used one?
If you sell your vehicle, contact SunPass to remove that transponder from your account or transfer it to a new vehicle. If you buy a used car with a transponder already mounted, remove it and contact the previous owner's SunPass account holder to have it deactivated. Then mount your own transponder or open a new account for the new vehicle.
How long does it take to receive my transponder in the mail?
SunPass typically mails transponders within 3 to 5 business days of account opening. Delivery takes an additional 5 to 7 business days depending on your location. You can use your account with plate-based payment (invoices by mail) while you wait for your transponder to arrive.
Can I get a refund if I close my SunPass account?
Yes. If you close your account, any remaining balance is refunded to the payment method you used to fund it. Refunds typically process within 5 to 7 business days. Contact SunPass customer service to close your account and confirm your refund status.