Apps
Road tax calculator
Enter your vehicle details and see the tax right away. No tables to read and no ID number needed.
Result
Enter your vehicle details and press Calculate. The tax, fines and other costs will show here.
This figure is for reference before you renew. The final amount can differ depending on your registration book and the latest Department of Land Transport rates. Compulsory insurance and service fees are estimates, so please check with our staff before you pay.
Frequently asked questions
How is tax worked out for a car?
Cars with up to 7 seats pay by engine size in steps: the first 600 cc at 0.50 THB per cc, 601 to 1,800 cc at 1.50 THB per cc, and anything above 1,800 cc at 4 THB per cc.
How about pickups and vans?
They pay by the vehicle weight shown in the registration book, and each type has its own table. Enter the weight and the calculator picks the rate. Some 4-door pickups are registered as passenger cars. If your book says passenger car with up to 7 seats, choose Car.
How much is motorcycle tax?
100 THB a year for any engine size. Compulsory insurance varies with cc.
Do older cars get a discount?
Yes, for cars: 10% in year 6, 20% in year 7, 30% in year 8, 40% in year 9, and 50% from year 10.
What is the fine for late tax?
1% of the tax per month, and part of a month counts as a full month. The calculator adds back tax and fines for every overdue year.
What if tax is over 3 years late?
The registration is suspended. You return the plates and book, pay the back tax and fines, then register again at the Land Transport Office. The calculator warns you when this applies. Call us on 02-759-9400 to ask about the steps.
How early can I renew?
Up to 90 days before the expiry date.
Do I need an inspection first?
Cars from 7 years old and motorcycles from 5 years old must pass an inspection first. Younger vehicles do not. Gas vehicles also need a gas inspection certificate.
Do gas vehicles pay less?
The NGV switch takes off 25%, for vehicles that run on NGV together with petrol or diesel. LPG gets no discount in this calculator. For NGV-only vehicles, please ask our staff.
Does it cover electric cars?
Not yet. Message LINE @mong and our staff can check it for you.
Do I need to enter an ID number?
No. It only uses vehicle details, runs on your own device and sends nothing anywhere.
Can Mongkol Auto Services renew for me?
Yes. With complete documents before noon on a working day, you can collect the sticker that evening, or have it posted. Message LINE @mong or call 02-759-9400.
When you are ready
Not sure where to begin?
Tell us your car model and what is on your mind, and we will tell you what to prepare.
LINE
Opening hours
Mon–Sat 08:00–18:00
299/11 Moo 5, Srinakarin Road, Bang Mueang, Mueang Samut Prakan, Samut Prakan 10270, Thailand
