What SunPass is and how it charges you
SunPass is Florida's electronic toll collection system. When you drive through a toll plaza on Florida's turnpike, bridges, or expressways, a reader scans a small transponder mounted on your windshield and deducts the toll from a prepaid account linked to your vehicle registration. You do not stop or hand over cash — the system reads your transponder and charges you automatically.
The transponder itself is free. You load money into your SunPass account online, by phone, or at a retail location, and that balance covers tolls as you drive. When your balance drops below a certain threshold (usually $10), the system automatically replenishes it using a payment method you set up — a credit card, debit card, or bank account. This is called autoreplenishment, and it keeps your account active without you having to remember to add money manually.
If you do not set up autoreplenishment and your balance reaches zero, your account becomes inactive. You can still drive through tolls, but the toll authority will bill you later — usually with a notice in the mail and a processing fee added to what you owe.
Key Takeaways
- SunPass charges tolls automatically when your transponder passes through a toll reader, deducting from a prepaid account linked to your vehicle.
- Autoreplenishment automatically refills your account when the balance drops below a set amount, using a payment method you choose in advance.
- If your account runs out of money and autoreplenishment is not set up, you will receive a bill in the mail with late fees added.
- You can manage your SunPass account online at sunpass.com, by calling 1-888-865-7827, or at retail locations like Publix and Winn-Dixie.
- If you move out of Florida or sell your vehicle, you should close your account or transfer the transponder to avoid unexpected charges.
Setting up autoreplenishment and choosing a payment method
Autoreplenishment is the easiest way to keep your account active. When you set it up, you choose a threshold amount — the balance at which the system will automatically add money — and a replenishment amount, which is how much money gets added each time. Most people set the threshold at $10 and the replenishment at $25 or $50, depending on how often they drive tolled roads.
You can set up autoreplenishment through the SunPass website (sunpass.com), through the SunPass mobile app, or by calling 1-888-865-7827. You will need your transponder number, which is printed on the transponder itself and also appears on any SunPass statement or invoice you have received. You can pay with a credit card, debit card, or bank account. The system charges your payment method only when the threshold is reached, not on a fixed schedule.
If you prefer not to use autoreplenishment, you can add money to your account manually whenever you want. Log into your SunPass account online, choose how much to add, and select your payment method. The money is usually available in your account within minutes. Manual replenishment works fine if you drive tolled roads only occasionally, but autoreplenishment is safer because you will not accidentally let your balance drop to zero and trigger a bill.
What happens when your account runs out of money
If your balance reaches zero and autoreplenishment is not active, you can still drive through tolls. The toll reader will record your transponder number, and the toll authority will send you an invoice by mail. This invoice includes the tolls you drove plus a processing fee — the fee amount varies but is typically $2.50 to $5.00 per transaction.
You have a important date to pay the invoice, usually 30 days from the date it was mailed. If you do not pay by that date, the toll authority may send a second notice with a higher fee, and your account may be flagged for collection. Unpaid tolls can also affect your vehicle registration renewal — the state may hold your registration until the toll debt is cleared.
If you receive an invoice, the fastest way to resolve it is to pay online at sunpass.com or by calling 1-888-865-7827. You can pay the invoice amount directly without setting up a full SunPass account if you prefer, though setting up an account and autoreplenishment will prevent this from happening again.
Checking your balance and transaction history
You can check your SunPass balance and see a list of every toll you have driven at any time through the SunPass website or mobile app. Log in with your account number and password, and you will see your current balance, your autoreplenishment settings, and a detailed history of every transaction — the date, time, location, and amount of each toll.
This transaction history is useful if you notice a charge you do not recognize or if you want to track your toll spending over time. If you see a toll you believe was charged in error — for example, a toll charged twice for a single passage — you can dispute it through your online account or by calling customer service. SunPass will review the transaction and refund you if the charge was indeed a mistake.
You can also set up email or text notifications through your account so that you receive an alert whenever your balance drops below a certain amount or whenever autoreplenishment occurs. These notifications help you catch problems early and avoid overdraft situations.
Transferring your transponder or closing your account
If you sell your vehicle or move out of Florida, you should close your SunPass account or transfer your transponder to a new vehicle. If you leave an active account open after selling your car, tolls may still be charged to that account if someone else drives the vehicle and the transponder is still mounted on the windshield.
To transfer your transponder to a new vehicle, log into your SunPass account online and update your vehicle information — the new license plate number and vehicle identification number (VIN). The transponder itself does not need to be moved or replaced; you straightforward update the account to reflect the new vehicle. This takes a few minutes and costs nothing.
To close your account, contact SunPass customer service at 1-888-865-7827 or submit a request through your online account. If your account has a positive balance (money left over), SunPass will refund that balance to the payment method you used to fund the account. The refund usually takes 7 to 10 business days. Once your account is closed, remove the transponder from your windshield so it is not accidentally scanned.
Resolving common SunPass problems
If your transponder stops working — for example, if it is damaged, cracked, or no longer reads tolls — you can request a replacement through your online account or by calling 1-888-865-7827. Replacement transponders are free. The new transponder will be mailed to you, and once you receive it, you can mount it on your windshield and it will work with your existing account when ready. Your old transponder can be discarded.
If you are charged a toll but your transponder did not register — meaning the toll reader did not detect your transponder and you were charged as an unregistered vehicle — you can dispute the charge. Contact SunPass with the date, time, and location of the toll, and they will investigate. If the transponder should have been read, they will refund the extra fees and adjust the charge to the correct SunPass rate.
If you move and your mailing address changes, update it in your SunPass account so that invoices and statements reach you. If you do not update your address and an invoice is sent to your old address, you may miss the payment important date and incur additional fees. You can update your address online or by calling customer service.
Understanding tolls and rates
SunPass toll rates vary depending on the road and the time of day. Florida's turnpike tolls are generally lower for SunPass users than for drivers who pay cash at a toll booth. Some expressways and bridges use dynamic pricing, which means the toll amount changes based on traffic conditions — tolls are higher during peak hours and lower during off-peak hours. Your SunPass account will show you the exact toll charged for each passage, so you can see what rate applied at the time you drove.
If you drive the same tolled road regularly, you can estimate your monthly toll costs by checking your transaction history and calculating an average. This helps you decide whether to set your autoreplenishment threshold and amount appropriately. If you drive tolled roads only occasionally, a lower threshold (like $5) and a smaller replenishment amount (like $15) may be more practical.
Frequently Asked Questions
Can I use my SunPass transponder in other states?
SunPass works only on Florida toll roads. If you travel to other states with toll roads, you will need to use that state's toll system — for example, E-ZPass in the Northeast or I-PASS in Illinois. Some states have reciprocal agreements with Florida, but you cannot use a single transponder across multiple states.
What if I never received my SunPass transponder in the mail?
Contact SunPass customer service at 1-888-865-7827 with your account number and mailing address. They can verify whether the transponder was mailed and, if it was lost in transit, send you a replacement. Replacement transponders are free and usually arrive within 5 to 7 business days.
Can I have more than one transponder for the same vehicle?
You can request multiple transponders for the same account, which is useful if you have multiple vehicles or want a backup. Each transponder will be linked to the same account and will draw from the same balance. Contact SunPass to request additional transponders.
Will unpaid tolls affect my vehicle registration?
Yes. If you have unpaid toll invoices, the Florida Department of Highway Safety and Motor Vehicles may place a hold on your vehicle registration renewal. You must pay the toll debt before you can renew your registration. This is why it is important to pay invoices promptly or set up autoreplenishment to avoid falling behind.
How do I know if my transponder is working correctly?
The easiest way is to check your transaction history online after driving through a toll. If the toll appears in your account within a few hours, your transponder is working. If you drive through a toll and it does not appear in your account by the next day, contact SunPass to report the issue and request a replacement transponder.