How is car road tax calculated in Singapore?

Road tax for a petrol car is based on its engine capacity (cc) using LTA’s tiered formula, then multiplied by an age surcharge of up to 50% for cars older than 10 years.

Why does road tax increase after 10 years?

Cars older than 10 years pay an age surcharge on top of the base road tax: +10% at 10 years, rising by 10% each year to a maximum of +50% after 14 years.

Road Tax Calculator

Estimate your annual car road tax in Singapore from engine capacity, including the age surcharge for cars over 10 years old.

Engine Capacity (cc)

Registration Date (optional, for age surcharge)

Enter your engine capacity to estimate road tax.

Estimates use LTA’s petrol-car road tax formula and current rates. Diesel, electric, and hybrid vehicles are calculated differently. Confirm the exact amount on OneMotoring / with the LTA.

How Road Tax Is Calculated

For a petrol car, road tax is based on engine capacity (cc) using a tiered formula, then adjusted by an age surcharge once the car passes 10 years:

Car age	Surcharge
Up to 10 years	None
10–11 years	+10%
11–12 years	+20%
12–13 years	+30%
13–14 years	+40%
Over 14 years	+50%

Track Your Car’s Costs

Save your car in the free COE Price Tracker app to get reminders before road tax, insurance, and COE expiry — plus live COE prices and renewal costs.

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Also try the rebate calculator and My Car expiry tool.

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