Complete 2026 Thailand Toll Fee & Motorway Update: M6 to M81

Whether you are traveling for a weekend getaway or commuting across provinces for business, Thailand’s expressways and motorways are essential for reaching your destination quickly and safely. However, toll fees are a significant part of your travel costs that should always be factored into your journey. Planning your expenses in advance helps you manage your budget effectively, especially for those driving their own vehicles or utilizing a car rental service for long-distance trips.

In 2026, there are several crucial updates regarding toll fees across various routes. This includes the highly anticipated new motorways, M6 and M81, as well as adjusted rates for urban expressways under new concession agreements. As your trusted travel companion, Exclusive Car Rental has compiled the most comprehensive and up-to-date 2026 Thailand toll fee guide so you can plan your trip flawlessly in one place.

This article relies on the latest verified data from official government agencies. Whether you are renting a car for a provincial road trip, driving your personal vehicle, or heading to a corporate meeting, you can use these figures to calculate your exact travel budget without any hidden surprises.

Summary of 2026 Toll Fees: Which Routes Should You Know?

Before we dive into the specifics of each route, let’s look at the big picture. The table below summarizes the latest toll fee status for major expressways and motorways in 2026 for 4-wheel vehicles.

Route	Area	4-Wheel Vehicle Rate	2026 Status	Remarks
Chalerm Maha Nakhon	Bangkok	50 THB	Verified	Normal collection
Si Rat	Bangkok	50 THB	Verified	Normal collection
Prachim Ratthaya (Si Rat – Outer Ring)	Bangkok-Vicinity	65 / 80 THB	Rate Adjustment	Increases to 80 THB starting Dec 15, 2026
Chalong Rat	Bangkok	40 THB	Verified	Normal collection
Don Mueang Tollway	Bangkok–Don Mueang	40 – 130 THB	Verified	New rates active since Dec 22, 2024
Udon Ratthaya	Bangkok–Pathum Thani	45 – 55 THB	Verified	Normal collection
Motorway M7	Bangkok–Chonburi–Pattaya	10 – 105 THB	Verified	Distance-based fee
Motorway M9	Outer Ring Road	30 THB / plaza	Verified	Pay per toll plaza
Motorway M81	Bang Yai–Kanchanaburi	10 – 150 THB	Active	Toll collection started Jan 16, 2026
Motorway M6	Bang Pa-in–Nakhon Ratchasima	Free (Trial)	Verified	Free trial continues, no fees collected yet in 2026

(Sources: Expressway Authority of Thailand (EXAT), Department of Highways (DOH), Royal Thai Government Gazette 2026)

Bangkok and Vicinity Expressways in 2026

For traveling within the Bangkok Metropolitan Region, particularly during rush hours, expressways are the ultimate time-savers. Here are the updated details for urban expressways in 2026.

Chalerm Maha Nakhon Expressway (First Stage)

This is Thailand’s first expressway, covering the Din Daeng – Port, Bang Na – Port, and Dao Khanong – Port routes. It remains the main traffic artery in central Bangkok.

Route	4-Wheel Vehicle	Remarks
Din Daeng – Port	50 THB	Cash / Easy Pass
Bang Na – Port	50 THB	Cash / Easy Pass
Dao Khanong – Port	50 THB	Cash / Easy Pass

Si Rat Expressway (Second Stage)

Connecting the inner city to the suburbs, this network includes Sectors A, B, C, and D, as well as the Prachim Ratthaya Expressway heading towards Thonburi. There is a major update for 2026 on this route.

Sector / Plaza	Route	4-Wheel Vehicle	Remarks
Sector A & B	Ratchadaphisek-Rama 9 / Phaya Thai-Bang Khlo	50 THB	Standard rate
Sector C	Ratchadaphisek-Chaeng Watthana	15 – 50 THB	Varies by exit
Sector D	Rama 9 – Srinagarindra	25 THB	Asok 3, 4 / Srinagarindra Plazas
Prachim Ratthaya	Si Rat – Outer Ring Road	65 THB -> 80 THB	Important: Increases to 80 THB effective Dec 15, 2026

Chalong Rat Expressway (Ramindra – At Narong)

This route connects eastern Bangkok to the city center, passing through Ramindra, Lat Phrao, Phatthanakan, Sukhumvit, and Bang Na.

Route	4-Wheel Vehicle	Remarks
Ramindra – At Narong	40 THB	Chatuchot, Ramindra 1-2, Pradit Manutham
Ramindra 1 Plaza	20 THB	Specific entry/exit

Udon Ratthaya Expressway (Bang Pa-in – Pak Kret)

An extension of the Si Rat Expressway (Sector C), this route heads north through Muang Thong Thani and Pathum Thani, ending in Bang Pa-in, Ayutthaya.

Route	4-Wheel Vehicle	Remarks
Chaeng Watthana – Chiang Rak	45 THB	Muang Thong, Si Saman, Bang Phun, Chiang Rak
Chiang Rak – Bang Pa-in	10 THB	Additional fee at Bang Pa-in
Full Route	55 THB	Maximum fee for the entire route

Don Mueang Tollway (Uttraphimuk Elevated Tollway)

Located above Vibhavadi Rangsit Road, this elevated tollway runs from Din Daeng past Don Mueang Airport to the National Memorial. The new rates, which took effect in late 2024, remain active throughout 2026 with a maximum fee of 130 THB.

Entry	Exit	4-Wheel Vehicle	Remarks
Din Daeng	Don Mueang	90 THB	Pay at Din Daeng
Don Mueang	National Memorial	40 THB	Pay at Lak Si
Din Daeng	National Memorial	130 THB	Maximum combined fee
National Memorial	Din Daeng	130 THB	Pay at Don Mueang

Sources: Expressway Authority of Thailand (EXAT) / Don Muang Tollway Public Company Limited

Thailand Motorway Toll Fees in 2026

It is important to note the difference between an “Expressway,” managed by the Expressway Authority of Thailand (EXAT), and a “Motorway” (Intercity Motorway), managed by the Department of Highways (DOH). Motorways generally use a distance-based toll fee system.

Motorway M7: Bangkok – Chonburi – Pattaya – Map Ta Phut

The most popular route for traveling to the eastern seaboard, including Chonburi, Si Racha, Pattaya, and Rayong.

• Start: Bangkok (Srinagarindra Interchange)

• End: Map Ta Phut, Rayong

• Toll System: Closed system (take a ticket/M-Flow at entry, pay by distance at exit).

• Best for: Beach trips, Pattaya cafe hopping, and business trips to Eastern industrial estates.

Example M7 Toll Fees for 4-Wheel Vehicles (Min 10 THB – Max 105 THB)

Entry	Exit	4-Wheel Vehicle	Remarks
Bangkok (Lat Krabang)	Bang Bo	25 THB	Short suburban trip
Bangkok (Lat Krabang)	Phan Thong (Chonburi)	50 THB	Perfect for Bang Saen trips
Bangkok (Lat Krabang)	Pong	80 THB	Heading towards Pattaya
Bangkok (Lat Krabang)	Pattaya	105 THB	Entering Pattaya City
Bangkok (Lat Krabang)	Map Ta Phut	105 THB	Full route to Rayong

Motorway M9: Outer Ring Road (East and South)

Highway No. 9 helps motorists bypass downtown Bangkok traffic. The toll collection is split into two main sections.

Section	Entry – Exit	4-Wheel Vehicle	Remarks
Eastern Ring	Bang Pa-in – Bang Phli	30 THB per plaza	Thap Chang 1 & 2, Thanyaburi 1 & 2
Southern Ring	Phra Pradaeng – Bang Khun Thian	15 – 45 THB	Distance-based (Closed system)
Southern Ring	Bang Phli – Suksawat	15 – 45 THB	Connects to Burapha Withi Expressway

Sources: Department of Highways (DOH) / Motorway Thailand

M81 Bang Yai – Kanchanaburi Toll Fees 2026

For nature lovers, the M81 Motorway is the highlight of the year. The Department of Highways has officially announced that M81 began official toll collection on January 16, 2026, at 00:01 AM, ending its long free-trial period.

This route drastically cuts travel time from Bangkok to Kanchanaburi from 2-3 hours down to just 50 minutes. The system features 8 toll plazas: Bang Yai, Nakhon Chai Si, Sisa Thong, Nakhon Pathom East, Nakhon Pathom West, Tha Maka, Tha Muang, and Kanchanaburi.

M81 Toll Rates for 4-Wheel Vehicles (2026)

The system is closed (Ticket/M-Flow) and distance-based. The maximum toll fee is 150 THB.

Entry	Exit	4-Wheel Vehicle (Based on DOH)
Bang Yai	Nakhon Chai Si	45 THB
Bang Yai	Nakhon Pathom (East/West)	65 – 75 THB
Bang Yai	Tha Maka	110 THB
Bang Yai	Tha Muang	130 THB
Bang Yai	Kanchanaburi (End)	150 THB

Note: The maximum rate for the entire route is 150 THB for 4-wheel vehicles. The speed limit is 120 km/h.

Source: Department of Highways (Official Collection Announcement, January 2026)

M6 Bang Pa-in – Nakhon Ratchasima Toll Fees 2026

The M6 Motorway (Bang Pa-in – Nakhon Ratchasima) is an incredibly popular route for heading to the Northeast (Isan). However, as of 2026, the Department of Highways has not yet officially implemented toll collection. The route remains open to the public as a FREE trial.

2026 M6 Status Update:

• Open Sections (Free Trial): The entire 196-kilometer stretch from Bang Pa-in to Nakhon Ratchasima is open for a free trial.

• Holiday Traffic Management: To manage heavy traffic during festivals (e.g., Songkran in April 2026), the Bang Pa-in to Pak Chong section operates as a one-way route on specific peak days. The Pak Chong to Nakhon Ratchasima section operates normally (2-way, 24/7).

• Toll Rates: No fees are collected yet. The DOH aims to implement full toll collection in 2027.

M6 2026 Timeline

• Jan – Present 2026: Fully open for a free trial. Zero toll fees.

• April 2026 (Songkran): Full 196 km capacity open (free). One-way systems implemented on certain days to ease congestion.

• Aug – Dec 2026: Final toll plaza constructions expected to wrap up, but the free trial will continue until early 2027.

Warning: Because the route is still in its free trial phase, travelers should not use older, estimated toll projections as an actual budget for 2026 road trips.

Source: Department of Highways PR Updates 2026

M6 vs M81 Comparison: What’s the Difference?

To clear up any confusion between Thailand’s two newest motorways, here is a strictly factual comparison table.

Feature	Motorway M6	Motorway M81
Route	Bang Pa-in – Nakhon Ratchasima	Bang Yai – Kanchanaburi
Distance	Approx. 196 km	Approx. 96 km
Connecting Provinces	Ayutthaya, Saraburi, Nakhon Ratchasima	Nonthaburi, Nakhon Pathom, Kanchanaburi
2026 Status	Free trial across the entire route	Toll collection started Jan 16, 2026
Toll System	System not yet active (Will support M-Flow)	Closed system / M-Flow / Cash
4-Wheel Fee	FREE (As of 2026)	Max 150 THB
Main Benefit	Bypasses Mittraphap Road traffic	Bypasses Phetkasem/Borommaratchachonnani traffic
Best For	Trips to Khao Yai, Korat, Upper Isan	Trips to waterfalls, rafting, Western Thailand

Easy Pass, M-Flow, and Cash: What’s the Difference?

Thailand’s toll payment systems have evolved significantly, particularly with the introduction of AI technology, allowing both private and rental car drivers to skip the long queues. Here are the three main systems:

1. Easy Pass / M-Pass

• What it is: An RFID-based automatic payment system requiring a physical Tag attached to the windshield and a smart card.

• Where to use: Almost all EXAT expressways and DOH motorways.

• Best for: Regular commuters with private cars who are comfortable topping up prepaid balances.

2. M-Flow

• What it is: A barrier-free, Free Flow toll collection system using AI Video Tolling to read license plates. No need to slow down or install physical tags.

• How it works: Drive through at up to 120 km/h. The AI records the plate, and the owner pays via the M-Flow app, credit card, or QR code within the specified time frame.

• Warning for Rental Cars: Always ask your rental company if the vehicle is registered for M-Flow. Failing to pay within the deadline (currently 7 days) results in a fine 10 times the toll amount!

3. Cash

• When to use: If you have no tags or registrations, use the manual booths with staff or coin/banknote machines.

• Limitations: Highly time-consuming, especially during holiday traffic jams.

Payment System Comparison Table

System	Technology	Registration	Best For	Caution
M-Flow	AI Camera	Recommended for auto-pay	Drivers wanting maximum speed	Renters must verify policy with rental companies
Easy Pass	RFID Tag	Required (prepaid)	Frequent private car users	Must monitor balance
Cash	Manual	None	Infrequent travelers	Long queues and traffic

Using M-Flow with a Rental Car: A Practical Guide

Taking a rental car through an M-Flow lane is a common concern for travelers, as mishandling it can lead to hefty fines. As an experienced car rental provider, we highly recommend following these practical steps.

When renting a car, you must ask the company these questions before you drive off:

1. Is the car registered for M-Flow? Most major companies register their fleet with M-Flow to link billing directly to their corporate accounts.

2. How is billing handled? Some allow you to drive through freely; the system bills the company, and they tally your total at the end of the trip.

3. Do I need to notify the company? Some providers ask you to notify them immediately via LINE or email right after you pass a toll to speed up their verification.

4. How will I be charged? Usually, the accumulated fees are deducted from your security deposit, or the company will send a QR code for you to transfer the exact amount.

5. Are there administrative fees? This varies entirely by company. Some charge the exact toll amount (100% pass-through), while others add a small admin processing fee. Read your contract carefully.

Crucial Note: Never assume all car rental agencies handle M-Flow the same way. The terms depend entirely on the individual provider. Clarifying this on day one will guarantee a stress-free road trip.

How to Plan Your Travel Budget Before a Road Trip

Knowing the exact 2026 motorway and expressway rates allows you to calculate your budget precisely. Here are sample budget estimates for 4-wheel vehicles on popular routes.

Example 1: Bangkok → Kanchanaburi (via M81)

• Car Rental: ~1,000 – 1,500 THB / day

• Gas (Round trip): ~800 THB (Assumption: 35 THB/L, 15 km/L, 300 km total)

• Toll Fees (Round trip): M81 Outbound 150 THB + Inbound 150 THB = 300 THB

• Base Budget (Excluding food/lodging): Approx. 2,100 – 2,600 THB

Example 2: Bangkok → Pattaya (via M7)

• Car Rental: ~1,000 – 1,500 THB / day

• Gas (Round trip): ~1,000 THB (350 km total)

• Toll Fees (Round trip): Bangkok Expressway (50) + M7 (105) = 155 THB / way. Round trip = 310 THB

• Base Budget: Approx. 2,300 – 2,800 THB

Example 3: Bangkok → Nakhon Ratchasima (via M6)

• Car Rental: ~1,000 – 1,500 THB / day

• Gas (Round trip): ~1,500 THB (500 km total)

• Toll Fees (Round trip): Don Mueang Tollway (130) or M9 (30) + M6 (Free in 2026) = 60 – 260 THB

• Base Budget: Approx. 2,500 – 3,200 THB

(Note: Fuel costs are hypothetical for planning purposes only and should not be treated as fixed prices.)

How Toll Fees Impact Your Overall Travel Budget

Toll fees are just one piece of the travel cost puzzle. To ensure your trip is financially smooth, break down your expenses into these categories:

1. Car Rental: A fixed cost known at booking. Choose a vehicle size suitable for your passenger count.

2. Fuel: A variable cost depending on distance, traffic, and driving habits. (If you drive an EV, this cost will drop significantly!)

3. Tolls / Motorways: A controllable, 100% predictable cost using the tables provided above.

4. Parking Fees: At hotels, attractions, or malls.

5. Food, Lodging, and Attractions: Personal, flexible expenses.

Simple Budget Formula:

Total Budget = Car Rental + Fuel + Toll Fees + Parking + En-route Expenses

Paying for the expressway might seem like an extra cost, but the hours saved, the fuel conserved by avoiding traffic jams, and the reduced driver fatigue are almost always worth the investment.

Best Road Trip Routes Using Motorways

Using motorways isn’t just about speed; it’s about seamlessly connecting to Thailand’s best landmarks. Here are 4 recommended routes:

1. Bangkok → Kanchanaburi (M81)

Instead of battling traffic on the Pinklao-Nakhon Chai Si route, hopping onto the M81 at Bang Yai takes you to Kanchanaburi’s lush nature in under an hour. It is the perfect route if you plan to visit the 10 best places to visit in Kanchanaburi 2026, such as the River Kwai Bridge, Krasae Cave, or riverside cafes.

2. Bangkok → Chonburi / Pattaya (M7)

If you are craving the sea, the M7 is your best bet. Costing a maximum of 105 THB, this wide, safe road features massive rest areas packed with food options. It is ideal for a weekend getaway in a rental car.

3. Bangkok → Nakhon Ratchasima / Khao Yai (M6)

Breathe the fresh air of Khao Yai National Park or head to Upper Isan without the usual Mittraphap Road bottlenecks. Because the M6 is completely free in 2026, it saves you money while offering arguably the most beautiful highway views in Thailand alongside the Lam Takhong reservoir.

4. Bangkok → Provinces During the Rainy Season

Motorways usually feature superior drainage systems and safer road curves compared to standard highways. However, driver skill remains paramount. If you must travel during a storm, we highly recommend reading our guide on safe driving in the rain to prepare yourself before turning the ignition.

Long-Distance Safe Driving Tips

Beyond budgets, safety is the absolute priority. Exclusive Car Rental summarizes these practical safety tips for long drives:

• Vehicle Inspection: Check tire pressure, brakes, battery, and lights. (If renting, the company handles this for you!)

• Fuel/EV Planning: Map out gas stations or EV charging stations in advance.

• Rest Frequently: Do not drive more than 2-3 hours without taking a 15-minute break to stretch.

• Maintain Distance: On high-speed motorways, leave a larger gap between you and the car ahead.

• Reduce Speed in Rain: Wet roads increase braking distance. Turn on your headlights and slow down.

• Have a Backup Route: Always check Google Maps for unexpected closures or accidents, and keep some cash handy just in case the ETC systems fail.

Frequently Asked Questions (FAQ) About 2026 Toll Fees

To make this guide as comprehensive as possible, we have answered the most common questions briefly and directly.

1. Are toll fees increasing in 2026?

Yes, there is an increase on the Prachim Ratthaya Expressway (Si Rat – Outer Ring Road). The 4-wheel rate jumps from 65 THB to 80 THB, effective December 15, 2026.

2. Is the M6 motorway collecting tolls yet?

No. In 2026, the entire 196 km M6 (Bang Pa-in – Nakhon Ratchasima) remains in a free trial phase. Official toll collection is targeted for 2027.

3. When does M81 start collecting tolls?

The Department of Highways officially began collecting tolls on the M81 (Bang Yai – Kanchanaburi) on Friday, January 16, 2026, at 00:01 AM.

4. How much is the M81 Bang Yai-Kanchanaburi toll fee?

The rate is distance-based. The maximum fee for the entire route (Bang Yai to Kanchanaburi) for 4-wheel vehicles is 150 THB.

5. How much is the M7 Bangkok-Pattaya toll fee?

For a 4-wheel vehicle starting at Lat Krabang and exiting at Pattaya (or Map Ta Phut), the maximum fee is 105 THB.

6. How is the M9 toll calculated?

The M9 (Eastern Ring Road) is a flat-rate system paid per plaza. It costs 30 THB at the Thap Chang plaza and 30 THB at the Thanyaburi plaza.

7. How much is the Don Mueang Tollway in 2026?

Following the December 2024 hike, the 2026 rates are: Din Daeng-Don Mueang (90 THB) and Don Mueang-National Memorial (40 THB), maxing out at 130 THB.

8. Can rental cars use M-Flow?

Yes, but it depends strictly on the rental company’s policy and whether they have registered the vehicle. You must verify this with the staff before using the lane.

9. What should I do if I drive a rental car through M-Flow?

Note the date and time, and inform the rental agency immediately as per your rental agreement. They will check their system and bill you for the actual cost.

10. What is the difference between Easy Pass and M-Flow?

Easy Pass requires a physical Tag on your windshield and slowing down for a barrier. M-Flow uses AI cameras to read your license plate, allowing you to drive through at high speeds without stopping.

11. Are there toll exemptions during holidays?

Usually, during long holidays like Songkran and New Year, the government waives fees for M7, M9, and Burapha Withi. Always check official DOH announcements near the holiday dates.

12. Where can I check the latest toll fees?

Check directly via the Expressway Authority of Thailand (EXAT) website, Department of Highways (DOH), the M-Flow app, or Motorway Thailand.

Sources and How to Check Latest Toll Rates

The information presented in this article references the latest verified 2026 data. However, government policies and holiday promotions can change. Always verify the latest announcements before you travel using these official channels:

• Expressway Authority of Thailand (EXAT): Manages urban expressways (Call 1543).

• Department of Highways (DOH): Manages national highways and intercity motorways (Call 1586).

• Motorway Thailand: For traffic status and M7/M9 rates.

• M-Flow: For unpaid balances and registration (Call 1586, press 1).

Conclusion

Toll fees in 2026 are a crucial expense you must factor into your travel planning. Each route operates under different systems and authorities, from flat-rate urban expressways to distance-based provincial motorways.

The biggest highlights of the year are the official start of toll collection on the M81 (Bang Yai-Kanchanaburi) on January 16, 2026, and the continuation of the free trial on the M6 (Bang Pa-in-Nakhon Ratchasima) pending its full completion. Knowing these updates ensures you won’t mistake old estimated prices for current reality.

Before any road trip, double-check the latest announcements, inspect your vehicle, and if you are using a rental car, always clarify M-Flow policies before receiving the keys.

For those planning a holiday or business trip, you can rely on the premium car rental Bangkok services from Exclusive Car Rental. By calculating your route and expenses in advance, you guarantee a seamless journey. We offer a wide range of meticulously maintained vehicles ready to be your perfect travel companion on any road!

References

• Department of Highways (DOH) PR: Progress of M6 Motorway Free Trial 2026

• DOH Announcement: Official Toll Collection on M81 Starting Jan 16, 2026

• Royal Thai Government Gazette (Sept 2026): Ministry of Transport Announcement on Prachim Ratthaya Toll Adjustments

• Don Muang Tollway Public Company Limited: Updated Toll Fee Rates

• Expressway Authority of Thailand (EXAT): 2026 Toll Rates for Chalong Rat, Chalerm Maha Nakhon, and Udon Ratthaya