Road tax calculator Singapore
Pick the fuel type and enter engine capacity or motor power to get road tax from LTA's published formulas.
Worked example
A 1,598cc petrol car (e.g. many 1.6-litre sedans): [S$250 + S$0.375 x (1,598 - 1,000)] x 0.782 = S$370.86 every 6 months, or S$741.73 a year before any surcharge.
Figures computed with the same formula as the calculator and unit-tested against official examples.
How it works
LTA works out 6-monthly road tax for petrol cars from engine capacity in five bands, each multiplied by 0.782: up to 600cc S$200; 600-1,000cc S$200 + S$0.125/cc above 600; 1,000-1,600cc S$250 + S$0.375/cc above 1,000; 1,600-3,000cc S$475 + S$0.75/cc above 1,600; above 3,000cc S$1,525 + S$1/cc above 3,000.
Electric cars pay by motor power (kW) in four bands, plus an Additional Flat Component of S$350 every 6 months in place of fuel duty. Petrol-electric hybrids are calculated both ways and pay the higher figure. Cars more than 10 years old pay a surcharge of 10% of road tax, rising by 10% each year to 50% for cars more than 14 years old.
Diesel cars also pay a special tax, which is not covered here. LTA's OneMotoring road tax enquiry gives the exact billed amount for a registered car (LTA may round it).
FAQ
How much is road tax for a 1.6-litre car?
About S$371 every 6 months (S$742 a year) for a 1,598-1,600cc petrol car under 10 years old.
How is EV road tax calculated?
By the motor's power rating in kW using LTA's EV bands, multiplied by 0.782, plus a S$350 Additional Flat Component every 6 months.
Does the surcharge apply to the EV flat component?
LTA describes the surcharge as a percentage of road tax; this calculator applies it to the road tax only, not the S$350 AFC. Check OneMotoring for your car.
Why are COE-renewed cars more expensive?
Once a car is more than 10 years old, the age surcharge of 10%-50% is added on top of the normal road tax.
Sources & rates as of 12 Nov 2026
- LTA OneMotoring - Vehicle tax structure (road tax formulas)
- LTA OneMotoring - Road tax (surcharge for vehicles over 10 years)
If an official rate changes, the official page wins. Spotted an outdated figure? This page is reviewed regularly.