What SunPass is and how it charges you

SunPass is Florida's electronic toll collection system. Instead of stopping at a toll booth to pay cash, you mount a small transponder on your windshield. When you drive through a toll plaza, the transponder communicates with a reader, and the toll is deducted automatically from your prepaid account. You never have to stop or hand over money.

The system works on Florida's Turnpike, most bridges and causeways, and some county toll roads. If you drive these routes regularly, SunPass saves time and often costs less than paying cash at the booth — cash tolls are typically 25 to 50 percent higher than the electronic rate, depending on the road.

You can also use SunPass on toll roads in other states through a reciprocal agreement, though rates and rules vary by state. Some states recognize your Florida transponder; others require you to set up a separate account.

Key Takeaways

  • SunPass requires a prepaid account and a windshield transponder; you load money into the account and tolls are deducted automatically as you drive.
  • Electronic tolls through SunPass cost 25 to 50 percent less than paying cash at a toll booth, depending on the road and time of day.
  • You can open a SunPass account online, by phone, or in person at a service center, and the transponder arrives by mail within 7 to 10 business days.
  • Your account balance can drop below zero, creating a negative balance that you must pay before the transponder will work again.
  • If you sell your car or remove the transponder, you must notify SunPass to avoid tolls being charged to an account you no longer use.

Opening a SunPass account and getting your transponder

To start using SunPass, you open an account and request a transponder. You can do this online at the SunPass website, by calling 1-888-SUNPASS (1-888-786-7277), or at a SunPass service center in person. You will need a valid driver's license, a vehicle registration, and a payment method (credit card, debit card, or bank account).

When you open the account, you choose how much money to deposit upfront. Most people start with $25 to $100, depending on how often they use tolls. You also choose whether you want the account to automatically refill when the balance drops below a certain amount — this is called autoreplenishment. If you turn on autoreplenishment, you will not have to monitor your balance as closely, but you will be charged a small fee each time the account refills (usually $1 to $2).

After you open the account, SunPass mails you a transponder. It typically arrives within 7 to 10 business days. You mount it on the inside of your windshield, usually near the top center or in the upper corner. The transponder has a unique ID that links to your account.

How tolls are charged and what happens when your balance runs low

Every time you drive through a toll plaza with your transponder active, the toll amount is deducted from your account balance when ready. The amount you pay depends on the road, the time of day, and the number of axles on your vehicle. Some Florida toll roads use dynamic pricing, which means the toll goes up during rush hours and down during off-peak times.

If your balance drops to zero or below, your transponder will stop working at the next toll plaza. You will be unable to pass through until you add money to your account. SunPass does not allow you to drive through with a negative balance — the system straightforward will not read your transponder.

If you do not have autoreplenishment turned on, you are responsible for checking your balance and adding money before it runs out. You can check your balance anytime online, by phone, or through the SunPass mobile app. Adding money takes a few minutes online or by phone, and the funds are available when ready.

Tolls you may owe if your account goes negative

If your balance goes negative before you add money, SunPass will send you a bill for the amount owed. This can happen if tolls are charged faster than you expected, or if you forget to check your balance. The bill will show the tolls that were charged and the total amount due.

You must pay this bill to restore your account. Until you do, your transponder will not work. Payment can be made online, by phone, or by mail. If you do not pay within a certain period, SunPass may refer the debt to a collection agency, which can affect your credit report.

To avoid this situation, many people use autoreplenishment so the account refills automatically before the balance reaches zero. Even with autoreplenishment, it is a good idea to check your account occasionally to make sure the system is working as expected.

What to do if you sell your car or stop using SunPass

If you sell your vehicle or no longer plan to use the transponder, you should notify SunPass right away. You can do this online, by phone, or at a service center. Tell them you are removing the transponder and ask them to close the account or transfer it to a new vehicle if you have one.

If you do not notify SunPass and someone else drives the car with the transponder still mounted, tolls will continue to be charged to your account. This can happen if you trade in the car at a dealership or sell it privately and forget to remove the transponder. The new owner may not know the transponder is there, and you will be responsible for the tolls.

When you close your account, SunPass will refund any remaining balance to the payment method you used to open the account. The refund typically takes 7 to 10 business days. If your account has a negative balance, you must pay that before closing.

Using SunPass in other states

Your Florida SunPass transponder may work on toll roads in other states, but this depends on whether that state has a reciprocal agreement with Florida. States like Georgia, North Carolina, and South Carolina recognize SunPass, but the toll rates and account rules may differ. Some states charge a surcharge if you use an out-of-state transponder.

Before traveling to another state, check the SunPass website or call customer service to confirm whether your transponder will work and what the rates will be. If the state does not recognize SunPass, you will need to pay cash at the toll booth or use that state's own electronic toll system.

If you use SunPass in another state, the tolls are still deducted from your Florida SunPass account. You do not need to open a separate account unless you plan to use tolls in that state very frequently.

Frequently Asked Questions

Can I use SunPass if I rent a car in Florida?

Some rental car companies offer SunPass transponders in their vehicles, but you must request one when you book or pick up the car. If the rental does not have a transponder, you can pay tolls at a cash booth. Do not use your personal SunPass transponder in a rental car, because the tolls will be charged to your account, not the rental company's.

What happens if I drive through a toll plaza without a working transponder?

If your transponder is not working or your balance is negative, the toll plaza camera will photograph your license plate. SunPass will send you a bill for the toll plus a processing fee, which is higher than the electronic rate. You must pay this bill within a certain timeframe or face additional penalties.

Can I get a refund if I prepay too much?

Yes. If your account has a balance remaining when you close it, SunPass will refund the unused amount to your original payment method within 7 to 10 business days. You can close your account online, by phone, or at a service center.

How do I know if my transponder is working?

You can check your account online or through the SunPass app to see your recent toll transactions. If tolls are being deducted, your transponder is working. If you pass through a toll plaza and no toll is deducted, your transponder may be damaged or your account balance may be negative.

What if I move out of Florida?

You can keep your SunPass account open even if you move away, as long as you have a valid payment method on file. If you no longer use Florida toll roads, you can close your account and request a refund of any remaining balance. If you plan to return to Florida occasionally, you can leave the account open and add money as needed.