SunPass and Toll Roads in Florida Rental Cars: What Toll Fees Really Cost
If you fly into Miami, Tampa, or Orlando and pick up a rental car, one quiet line item can add anywhere from $30 to $300 to your bill: tolls. The tolls themselves are cheap. What costs real money is the daily service fee the rental company charges on top of them. Here is how the system works, what each major company charges, and how to pay the least.
Florida is almost entirely cashless
Florida's toll roads, including the Turnpike, the Selmon Expressway in Tampa, and State Roads 408, 417, and 429 around Orlando, run on two systems:
- SunPass, a transponder linked to a prepaid account. It gets you the lowest toll rate.
- TOLL-BY-PLATE, where a camera photographs your license plate and mails the bill to the registered owner. Higher rate, plus an administrative fee on every invoice.
Since 2021, cash lanes are gone from most Florida toll roads. So in a rental car you have three options: use the rental company's toll program, bring your own transponder, or route around the tolls.
Good news if you are visiting from another state: E-ZPass is accepted on every Florida toll road. If you have a transponder from New York, New Jersey, Pennsylvania, or another East Coast state, bring the actual device and mount it on the windshield. One thing to be clear about: Florida's interoperability works through the transponder, not the plate. Adding your rental car's plate to an out-of-state E-ZPass account will not route camera-based tolls to it.
What changes when the car is a rental
The license plate belongs to the rental company, not to you. Drive through a gantry without a working transponder and the camera reads that plate, so the bill goes to the registered owner. The rental company then passes it along to you under its own rules.
That means you can be charged for:
- the toll itself;
- an administrative fee;
- a daily fee for using the company's toll program;
- a prepaid unlimited toll package, if one was added to your contract.
The express lanes are stricter than regular toll roads
This one catches visitors off guard. On the 95 Express lanes through Miami-Dade and Broward, a transponder is mandatory. There is no cash option and TOLL-BY-PLATE is not accepted at all.
Drift into those lanes without one and you get more than a toll invoice. The registered owner receives a bill for the tolls incurred, a $2.50 administrative fee, and a $25.00 daily violation charge on top. In a rental car, that bill lands on the rental company first and comes back to you with their fees attached.
Express lane tolls are also dynamically priced, rising as traffic builds. So this is not the place to find out that the transponder in your rental was never activated.
What the major rental companies charge
Toll programs are sold as convenience: just drive, we will handle it. In practice it is a daily fee stacked on top of the toll, and that fee is where the money is made.
| Company | Program | Service fee | Cap per rental | Notes |
|---|---|---|---|---|
| Hertz, Dollar, Thrifty | PlatePass | around $9.99/day, varies by location | stated on your rental record | Two versions, standard and all-inclusive. On the standard one, tolls are billed at the road's highest undiscounted rate |
| Avis, Budget | e-Toll | $6.95/day | $34.95 per rental | Charged only on days you actually incur a toll. Cap applies to rentals up to 30 days |
| Enterprise, National, Alamo | TollPass | $4.95/day | $34.65 per rental | No fee on days you stay off toll roads |
| Sixt | Toll service | varies by location | varies | Confirm at the counter |
Read that table carefully. The fee is charged per day and it sits on top of the toll. A single $1.50 toll in a Hertz rental can cost you $11.49 that day. Touch a toll road on five days of your rental and you are looking at $25 to $50 in fees alone, before a penny of actual tolls.
For a weekend trip that is annoying but survivable. For a month it is real money: at roughly $6 a day, a 30-day rental with regular toll road use adds $150 to $210 in pure fees. For access to a transponder that costs $15 to buy outright.
A note on Hertz specifically. Their fee is set on your rental record and shifts by location, so there is no single national number. And the daily fee is not the worst part: on the standard PlatePass program, tolls are billed at the road's highest undiscounted rate, so you lose on the toll rate too.
Option 1: use the rental company's program
The simple route. You drive, they bill you.
Pros: nothing to set up, no transponder to buy, no chance of entering the wrong plate number.
Cons: the daily fee, and with some companies a worse rate on the tolls themselves.
For two or three days this is a reasonable choice, especially with Enterprise, National, or Alamo at $4.95 a day. For a month or longer, the math stops working.
Option 2: bring your own transponder
Here it matters which one you buy, because there are two and they are not interchangeable.
- SunPass Mini, $4.99. A sticker that adheres permanently to the windshield. It does not move between cars. Not an option for a rental.
- SunPass PRO, $14.95. Portable, mounts with suction cups, comes off and goes into the next car. It also works anywhere E-ZPass is accepted outside Florida. This is the one you want.
The ten dollar difference pays for itself in three days against even the cheapest rental program, so there is no reason to save on the wrong model.
The steps:
- log into your SunPass account;
- add the rental car's plate as a temporary vehicle;
- enter the rental start date;
- enter the end date, and do not skip this one;
- take the transponder with you at drop-off and remove the vehicle from your account.
That last step is not housekeeping. Leave someone else's car active on your account and you will keep paying for the next renter's trips.
The hidden risk: getting billed twice
"Just bring your own transponder" is advice you see everywhere, and it is messier than it sounds.
Every gantry can record a toll two ways, by transponder and by plate photo. In a rental car both channels are usually live at the same time:
- your SunPass gets read and the toll hits your account;
- but the plate is already tied to the rental company's toll program, and opting out is not always possible;
- if the gantry misses your transponder, or the company bills through the plate anyway, you get a second charge plus their administrative fee for the same trip.
There is a second trap: the car often already has the company's transponder in it. Two active devices in one windshield produce double reads. That is why people keep the rental company's unit switched off or removed, and store their own in a shielded pouch when it is not in use.
To use your own device without double billing, you will need to:
- explicitly decline the toll program at the counter;
- confirm the company's transponder is removed or turned off;
- add the plate to your account with both a start and an end date;
- watch your statement for two to six weeks and dispute anything billed twice.
Four steps, a conversation at the counter, and a month of monitoring for what was supposed to be the easy option.
The surprise bill weeks later
Tolls do not post immediately. A toll plus an administrative fee can hit your card weeks or even months after you return the car. If you used your own account, make sure the rental plate has been removed, or the bill you get will be for someone else's driving.
Can you just avoid toll roads
You can. Google Maps and most navigation apps have an "avoid tolls" setting. In Florida it is not always a win: the free route is usually longer, slower, full of traffic lights, and hit harder by congestion.
The goal is not to never pay a toll. It is to avoid paying unnecessary fees on top of the toll.
Four questions to ask before you take the keys
- Is there a transponder in this car, and which one?
- Is there a daily or administrative fee, and how much is it?
- Is the fee charged for every rental day or only on days I use a toll road?
- Can I decline your program and use my own SunPass?
Get the answers before your first toll, not after. If you are renting for the first time, our breakdown of how renting a car in Miami actually works covers documents, deposits, and the pickup inspection.
If you are renting for a month or longer
On a long rental, toll terms become a line item of their own. A few dollars a day disappears on one trip and turns into two hundred dollars over a month of driving around Miami.
So when you compare long-term rentals, look past the monthly rate at the terms for SunPass, insurance, the security deposit, the mileage limit, additional drivers, and other service fees. Those are what set the real cost.
How it works at CarForLong
We are not a daily rental company. We do long-term car rental in Miami, and the offer is built to strip out exactly the fees described above.
A SunPass transponder is already installed in every car and included in the monthly rate, along with taxes, insurance, and child seats. No $5 or $10 daily fee, no activation charge, no administrative markup. You pay the standard SunPass rate on the tolls you actually drive, and nothing else.
Because there is one transponder tied to the car, the double billing problem disappears. Nothing to decline at the counter, no second billing channel, no month of checking your statement. There is also no reason to bring your own device, since you would be paying roughly the same tolls with extra steps.
You can browse the cars available in our fleet. Tolls accumulate during the rental and are settled when you return the car. A typical month runs $20 to $40, or $50 to $70 if you use toll roads heavily. More detail on our toll roads and SunPass FAQ.
So which option should you take
- Renting for a few days: compare the rental company's program against how many toll days you expect. Enterprise, National, and Alamo are usually the cheapest of the big three.
- In Florida often: buy your own SunPass PRO for $14.95 and keep it in your bag.
- Renting for a month or longer: find a company that includes the transponder in the rate. Daily fees are exactly the kind of cost that compounds over a long rental.
We deliver to cities across Florida, not just Miami. Whichever route you take, sort out the toll terms before your first toll road. A few minutes at the counter saves an unpleasant bill a month after you hand back the keys.
CarForLong monthly rates already include SunPass, insurance, taxes, and child seats.
Frequently asked questions
Can I add a rental car's plate to my own SunPass account?
Yes. A rental vehicle can be added temporarily for the length of the rental. Check the rental company's rules first: if their toll program also bills by plate, the same trip gets processed twice and so does the charge.
Does E-ZPass work in Florida?
Yes, on every toll road in the state. But you need to bring the physical transponder. The interoperability runs through the device, not through your plate.
Is it worth buying a SunPass just for a rental?
For a few days, usually not. For a month or longer, yes, provided your rental agreement allows it. Buy the SunPass PRO at $14.95. The $4.99 Mini is a sticker that will not come off the windshield, so it is useless for a rental.
What is TOLL-BY-PLATE, and can I just pay the toll myself afterward?
It bills the registered owner based on a photo of the license plate. In a rental that owner is the rental company, so the invoice goes to them and comes back to you with their fees added. And on the express lanes, TOLL-BY-PLATE is not accepted at all.
Can I decline the rental company's toll program?
With some companies yes, with others no, and it needs to be settled at the counter before you drive off. Even if you decline, check whether their transponder is still in the car.
When will the toll charges show up?
Anywhere from a few days to a few months after you return the car. That lag is normal, which is exactly why closing out the rental period on your own account matters.
Sources: published toll program terms from the rental companies (Hertz PlatePass, Avis and Budget e-Toll, Enterprise, National and Alamo TollPass), SunPass documentation, Florida's Turnpike Enterprise, and 95 Express. Verified August 2026. Fees vary by location and change regularly, so confirm current terms when you pick up the car.
