Miami SunPass Guide 2026: How to Pay Tolls, Avoid Fees & Drive Smart in South Florida

South Florida has gone fully cashless on its toll roads, and if you are driving in Miami without a plan, you will pay for it. A SunPass transponder is the single most important thing you can get before you hit the road here.

This guide covers everything you need to know for 2026, including new toll rates, the switch from MDX to GMX, EV rule changes, rental car tips, and how to avoid scams.

Quick Answer: What Is SunPass and Why Do You Need It?

SunPass is Florida’s prepaid electronic toll program. A small transponder on your windshield communicates with overhead gantries and deducts tolls automatically from your account.

Every major road in South Florida now operates without cash lanes. That means you either pay electronically through SunPass or you pay through the Toll by Plate system, which costs significantly more.

The bottom line on savings:

• SunPass users pay roughly 50% less than Toll by Plate users on most Miami roads
• The Greater Miami Expressway Agency (GMX) processes more than 1.6 million transactions per day
• About 71.5% of drivers already use SunPass transponders

If you are in the 28.5% who are not using a transponder, this guide is for you.

What Changed in 2026: The Big Updates You Need to Know

Before getting into the basics, here are the major changes that affect Miami drivers right now. These updates came into effect between mid-2025 and early 2026.

MDX Is Gone. Meet GMX.

The Miami-Dade Expressway Authority (MDX) was dissolved and replaced by the Greater Miami Expressway Agency (GMX). This transition wrapped up in August 2023.

GMX manages five key expressways in Miami-Dade:

• Airport Expressway (SR 112)
• Dolphin Expressway (SR 836)
• Don Shula Expressway (SR 874)
• Snapper Creek Expressway (SR 878)
• Gratigny Parkway (SR 924)

GMX is required to reinvest all toll revenue back into local Miami-Dade mobility projects. The agency has also committed to a moratorium on toll increases, which is good news for commuters.

EV and Hybrid Toll Exemptions Are Gone

Florida Senate Bill 1662 took effect on July 1, 2025, ending HOV lane toll exemptions for single-occupant electric and hybrid vehicles. The 95 Express LEV Toll Exemption Program no longer accepts new decal registrations.

If you drive an EV or hybrid, you now pay the same toll rates as any other vehicle. Existing decals remain valid only until their expiration date.

Causeway Tolls Increased by 200%

The Rickenbacker and Venetian Causeways implemented new rates on October 1, 2025. The standard two-axle toll jumped from $1.00 to $3.25 for SunPass users, a 200% increase.

SunPass vs. Toll by Plate: The Real Cost Difference

The difference between paying with SunPass and getting caught without one is significant. This table shows exactly what you save on GMX roads.

GMX Expressway Rates (2026)

Source: GMX FY2026 Annual Budget

Beyond the per-toll savings, Toll by Plate also charges a transaction fee on top of each invoice. Missing an invoice leads to late fees. Those fees can snowball quickly.

Choosing Your Transponder: Mini vs. PRO

SunPass offers two main transponder options in 2026. The right one depends on how and where you drive. Here is a direct comparison.

Transponder Comparison Table

Source: SunPass About Page and Florida’s Turnpike SunPass PRO FAQ

SunPass Mini: Best for Personal Vehicles

The Mini is an adhesive sticker that uses passive RFID technology. It sticks permanently to the inside of your windshield, usually near the rearview mirror.

Key facts about the Mini:

• Cannot be removed without destroying the device
• Works on all toll roads and bridges in Florida and five other states
• Lowest upfront cost at $4.99

If you own one car and stay mostly in Florida, the Mini is all you need.

SunPass PRO: Best for Flexibility

The PRO uses a suction cup mount, so you can move it between vehicles. It also connects to the full E-ZPass network across 23 states.

Key facts about the PRO:

• Works on motorcycles
• Ideal for rental car users
• Accepted on major toll roads, including the New York State Thruway, Pennsylvania Turnpike, and Massachusetts Turnpike
• Costs $14.95 upfront, but it pays for itself quickly if you rent cars often

A Note on Windshield Types

Some vehicles have metal oxide or infrared-reflecting glass in the windshield. This type of glass can cause missed reads on gantries.

If your car has a specialized windshield, contact the SunPass Customer Service Center about bumper-mounted transponder options.

How to Get and Activate SunPass

Getting set up is simple. Here are your three options.

Option 1: Buy Online

Visit SunPass.com to order your transponder. They will ship it to you. Activation happens online after it arrives.

Option 2: Buy In-Store

You can pick up a SunPass Mini at major Florida retailers, including Walgreens, CVS, Publix, and Walmart. This is the fastest option if you need one before a trip.

Option 3: Visit a Service Center

SunPass has physical service centers where staff can help with setup, account issues, and questions about rental vehicles.

Important: Allow at least 48 hours after purchase for activation. Do not wait until you are at the toll plaza to find out it is not ready.

Managing Your SunPass Account

Once your transponder is active, keeping your account in good shape is straightforward.

Funding Your Account

• Minimum opening balance is typically $10
• Pay by credit card, debit card, or e-check
• Set up AutoReplenish so your balance refills automatically when it drops below a set threshold

AutoReplenish is the most important setting in your account. If your balance hits zero, your transactions still process, but at the Toll by Plate rate. That removes the entire benefit of having a transponder.

Ways to Manage Your Account

• SunPass App (iOS and Android): Check balance, review toll history, add funds, manage vehicles
• Online portal at SunPass.com: Full account access and transaction history
• Phone: Call 1-888-TOLL-FLA (1-888-865-5352) for customer support

Keep Your Account Details Current

Two common mistakes that create billing headaches:

1. Expired credit card on file: If your card expires, AutoReplenish fails silently and your balance drains
2. Wrong license plate registered: Make sure the current plate on your vehicle is linked to your account

Express Lanes and Dynamic Pricing

Miami’s managed lanes are a great way to escape traffic, but the pricing can surprise you if you do not understand how it works.

How Dynamic Pricing Works

Express lane tolls on I-95, I-75, and the Palmetto Expressway (SR 826) are not fixed. They change every 6 to 15 minutes based on real-time traffic volume and average speeds.

The goal is to keep express lanes moving at a minimum of 55 MPH. When traffic builds up, prices go up to discourage new entries. When roads are clear, prices drop.

You are locked into the price shown on the sign when you pass the entry gantry. Even if the price changes mid-trip, you pay whatever rate was displayed when you entered.

Also important: Toll by Plate is not accepted in express lanes. You must have an active transponder to use them.

Dynamic Pricing Reference Table

Source: FDOT Managed Lanes Program

On the I-95 Express, which runs about seven miles from the Golden Glades Interchange to Downtown Miami, tolls can range from $0.50 at quiet times to over $10.50 during peak congestion.

The 3+ Carpool Exception

Vehicles with three or more occupants can use the 95 Express lanes for free. You need to register with South Florida Commuter Services (SFCS).

How the carpool program works:

• Registration must be renewed every 12 months
• You receive a 3+ Carpool decal after approval
• When using the express lanes toll-free, place your transponder in an RF shield bag to avoid accidental charges
• This exemption applies only to the 95 Express network, not to the Turnpike or Palmetto Express

Palmetto Express Updates

The southbound express lane entrance on SR 826 was relocated from NW 154th Street to SR 932 near NW 103rd Street. This change was made to separate long-distance commuters from local traffic entering from Miami Lakes and Hialeah.

If you used to enter from NW 154th Street, note that the ramp now feeds general-use lanes first. You will merge into tolled lanes further south.

Causeways: Rickenbacker and Venetian

The Rickenbacker and Venetian Causeways are the only land routes to Key Biscayne and the Venetian Islands. Both went fully cashless and raised their rates significantly in October 2025.

2026 Causeway Toll Rates

Source: Miami-Dade County Causeways

Toll by Plate also adds a $2.50 monthly administrative fee. Even occasional visitors to the beaches will save money with a SunPass account.

Annual Plans for Residents and Commuters

If you live or work on the islands, annual plans bring costs down significantly. These plans run from October 1 to September 30 and are not prorated.

Renewal window: Opens in July each year. You must complete the renewal by September 30 to avoid service interruptions.

EV and Hybrid Drivers: What You Need to Know Now

Florida ended its HOV lane exemptions for low-emission vehicles on July 1, 2025. This is one of the biggest toll policy changes in years, and it affects a lot of South Florida drivers.

What Changed

Before SB 1662, hybrid and electric vehicle owners could register for the 95 Express LEV Toll Exemption Program. That program let them use express lanes toll-free regardless of how many people were in the car.

South Florida Commuter Services stopped issuing new decals and renewals for this program in late 2025.

What It Means for You Right Now

• Existing decals: Still valid until their printed expiration date
• New or expired decals: No longer available
• After your decal expires: You pay the full dynamic toll rate like any other vehicle
• In 2026: An EV is treated as a standard passenger vehicle for all tolling purposes

If you drive an EV and your decal has expired, you need an active and funded SunPass account to avoid violations on express lanes.

For more details on how this change happened, see the WLRN report on SB 1662 and the Miami-Dade legislative record.

Using SunPass in a Rental Car

Rental car tolling is one of the most common sources of billing surprises after a Miami trip. Here is what you are dealing with.

What Rental Agencies Charge

Most major agencies automate toll collection through license plate recognition. The fees add up fast.

Source: Hola Car Rentals Rental Billing Guide

The daily fee applies every day you have the car, not just days when you use a toll road. That is an important distinction that catches many travelers off guard.

How to Use Your Own Transponder in a Rental

You can avoid rental agency toll fees entirely by using a SunPass PRO in the rental vehicle. Here is how to do it correctly:

1. Place the SunPass PRO on the rental car’s windshield using the suction cup
2. Log in to your SunPass account at SunPass.com or on the app
3. Add the rental car’s license plate number and state to your account
4. Set specific start and end dates and times that match your rental period
5. At the rental counter, decline the agency’s toll plan

This process tells the SunPass system to bill your personal account for any tolls recorded to that plate. It also prevents the rental agency’s Toll by Plate system from triggering its own billing cycle for the same transactions.

SunPass Plus: Paying for Parking Too

SunPass is not just for toll roads. The SunPass Plus program lets you pay for parking at airports and major event venues using the same account.

Airports That Accept SunPass Plus

• Miami International Airport (MIA)
• Fort Lauderdale-Hollywood International Airport (FLL)
• Orlando International Airport (MCO)
• Tampa International Airport (TPA)

How it works: The system reads your transponder when you enter a parking garage, records the time, and deducts the fee when you exit. No ticket to keep. No kiosk to deal with.

Important: SunPass Plus requires enrollment in Easy Pay, which links a credit or debit card for automatic account replenishment.

The Brightline Orlando Station parking lots also accept SunPass and E-PASS exclusively for their $20 daily rate.

Hard Rock Stadium Parking

SunPass Plus works at Hard Rock Stadium for Miami Dolphins games, University of Miami football, and the Miami Open.

Source: Miami Open Parking and Transportation

Using SunPass at the stadium saves about $10 compared to paying at the gate with a credit card. However, buying a digital pass in advance is still the cheapest option for most events.

SunPass and E-ZPass: Driving Beyond Florida

One underappreciated feature of SunPass is how far it works beyond Florida state lines. This matters a lot if you travel up the East Coast.

What the SunPass PRO Covers

The SunPass PRO connects to the E-ZPass network, giving you electronic toll access across 23 states. That includes:

• New York State Thruway
• Pennsylvania Turnpike
• Massachusetts Turnpike
• Toll roads in Illinois, Minnesota, Kansas, Oklahoma, and Texas

Source: Florida’s Turnpike Interoperability Page

Visitors From Outside Florida

If you are visiting from a state that uses E-ZPass, I-PASS, or RiverLink, your existing transponder already works on Florida’s Turnpike and GMX roads. You will receive the same discounted electronic rates as SunPass customers.

Avoid Double Billing

If you have both a SunPass and an E-ZPass in the same vehicle, you risk being charged twice. Gantries in 2026 are sensitive and may trigger both devices simultaneously.

The fix is simple: keep the secondary device in an RF shield bag whenever the primary transponder is active.

Commuter Discounts and Rewards Programs

Paying tolls every day adds up. Fortunately, several programs exist to bring those costs down for regular drivers.

GMX South Florida Saves Program

GMX offers a 20% discount to SunPass users who record 40 or more transactions per month on GMX roads. The program is automatic. You do not need to register. Credits are applied directly to your SunPass account the following month.

Additional GMX discounts include:

• 15% discount for active military personnel using a registered SunPass Mini for personal use
• Multi-axle commercial vehicles are capped at the three-axle rate if the account stays in good standing

Source: GMX Toll Discount Programs

Regional Discount Programs Across Florida

Source: SunPass Tolls Page

All of these programs are exclusive to SunPass users. Toll by Plate accounts are not eligible for any of them.

The Golden Glades Interchange Construction

If you drive anywhere near the northern edge of Miami-Dade County, you will encounter construction at the Golden Glades Interchange (GGI). Knowing what is happening there will save you time and frustration.

What Is the GGI Project?

The Golden Glades Interchange connects five major roadways:

• I-95
• Palmetto Expressway (SR 826)
• Florida’s Turnpike
• SR 9
• US 441

It is the busiest transit hub in South Florida. A $1.04 billion reconstruction project began in early 2024 and is projected for completion in late 2031.

What Is Being Built

• 34 new bridges and flyover ramps
• Widening of southbound I-95 and Florida’s Turnpike for dedicated express lane access
• Installation of wrong-way vehicle detection systems
• 72 new traffic monitoring cameras

The primary goal is to create a direct system-to-system connection for eastbound Palmetto traffic heading to northbound I-95. Right now, that movement requires weaving through local traffic, and it is one of the worst bottlenecks in the region.

How to Drive Through It Right Now

• Expect frequent overnight and weekend ramp closures
• The exit from eastbound SR 826 to northbound I-95 currently operates as one lane (it will expand to three lanes in future phases)
• FDOT recommends using Google Maps, Waze, or Apple Maps for real-time lane closure updates
• One alternate route: exit the Turnpike at NW 7th Avenue, head south to NW 151st Street, then re-access I-95 to bypass the central interchange core

Stay current with closures at the GGI Project official site and FDOT Miami-Dade.

How to Avoid Scams and Billing Errors

As Miami’s toll system has gone fully electronic, phishing scams targeting drivers have increased. Here is how to protect yourself.

Spotting a Toll Scam Text

Scammers send text messages claiming you have an unpaid toll that must be paid immediately to avoid penalties. These messages look convincing, but there are clear warning signs.

Red flags to watch for:

• Unsolicited texts claiming you owe a toll (SunPass and GMX primarily communicate by mail or through the official app)
• Urgent language such as “pay within 12 hours” or “your registration will be suspended”
• URLs that are not sunpass.com, such as sunpassalert-payment.info or florida-tolls-paynow.com
• Messages from a standard 10-digit phone number instead of the official SunPass short code 786727

For official guidance, see the FCC toll scam advisory and the FTC consumer alert on toll scams.

What to Do If You Have a Real Billing Error

Legitimate billing errors do happen. Here is the process to resolve them.

1. Log in to SunPass.com and review your transaction history. High-resolution images of toll transactions are sometimes available.
2. Go to Online Support and start a live chat or submit an inquiry.
3. Gather your documentation. You will need the Enforcement Invoice Number and any proof supporting your claim, such as a bill of sale for a vehicle you no longer own, or a transponder activity log showing your account was active at the time of the toll.

You can also file a dispute directly at the SunPass Dispute Page.

Act quickly. If a toll remains unpaid for more than 60 days, it gets removed from the SunPass system and sent to a collections agency. That can result in a DMV Registration Stop, which blocks your vehicle registration renewal.

Common Mistakes to Avoid

Here is a quick list of the errors that cost Miami drivers money every year.

• Letting your SunPass balance drop to zero
• Not registering a rental car’s plate before using toll roads
• Ignoring Toll by Plate invoices (they escalate to late fees and collections)
• Carrying both a SunPass and an E-ZPass active at the same time in one vehicle
• Assuming your EV or hybrid still qualifies for an HOV exemption after July 2025
• Not renewing your 3+ Carpool registration annually
• Clicking links in unsolicited toll-related text messages

Your Miami Road Trip Starts Here

South Florida’s road network is one of the most sophisticated in the country, and it runs almost entirely on electronic tolling. The good news is that once your SunPass account is set up and funded, driving here is genuinely smooth.

Get your transponder before you arrive. Set up AutoReplenish. Register any rental plates before you drive. And if you commute regularly, check whether you qualify for the GMX South Florida Saves discount.

Miami traffic is a lot more manageable when you are not also worrying about toll bills arriving weeks after the fact. Get your SunPass sorted, and go enjoy the drive.

Pavithra Vinoth

Pavithra Vinoth is the founder of nytollsinfo.com, where she simplifies U.S. toll systems through expert insights and custom-built calculators. Her research-driven tools help drivers avoid costly mistakes and make smarter car decisions.