Road Tax Calculator

Category: Auto
- May 22, 2025
| |

Calculate your annual and pro-rated road tax for vehicles in Singapore. This calculator helps vehicle owners determine their road tax liability based on engine capacity, fuel type, and payment period preferences.

Vehicle Information

cc
Engine displacement in cubic centimeters
Date when vehicle was first registered

Payment Period

When road tax payment period begins

Additional Options

Advanced Calculations

days
Days overdue for penalty calculation
months
Months vehicle was off-road (rebate eligible)

Understanding Singapore Road Tax

Road tax is an annual fee levied on all motor vehicles in Singapore. The amount depends primarily on the engine capacity of the vehicle, with higher capacity engines attracting higher road tax rates. The tax helps fund road infrastructure and maintenance.

Road Tax Rate Structure (2025)
  • Up to 600cc: S$372 per year
  • 601cc - 1000cc: S$744 per year
  • 1001cc - 1600cc: S$1,488 per year
  • 1601cc - 3000cc: S$2,976 per year
  • Above 3000cc: S$3,720 per year
Special Vehicle Categories
  • Electric Vehicles: Reduced rates based on power output equivalency
  • Hybrid Vehicles: Standard rates based on engine capacity
  • Motorcycles: Separate rate structure based on engine capacity
  • Commercial Vehicles: Different rates for goods vehicles and buses
  • Classic Cars (25+ years): Reduced rates for eligible vehicles
Payment Options
  • 6-Month Payment: Pay half the annual rate twice yearly
  • 12-Month Payment: Pay full annual rate once per year
  • Pro-rated Payment: For new registrations or mid-year changes
  • Online Payment: Available through OneMotoring portal
Late Payment Penalties
  • First 30 days: 10% penalty on outstanding amount
  • 31-60 days: Additional 10% penalty (total 20%)
  • After 60 days: Vehicle may be impounded or deregistered
  • Interest charges: Apply monthly on unpaid amounts
Exemptions and Rebates
  • Off-road Rebate: Available if vehicle is off-road for extended periods
  • Disabled Driver Concession: Reduced rates for eligible disabled drivers
  • Wheelchair Accessible Vehicles: Special rates for modified vehicles
  • Electric Vehicle Incentive: Reduced rates to encourage adoption

Disclaimer: This calculator provides estimates based on current road tax rates and standard regulations. Actual road tax amounts may vary based on specific vehicle classifications, official engine capacity ratings, and regulatory changes. Road tax rates are subject to annual review by the Singapore government. Always verify current rates and payment due dates through official LTA channels.

What Is the Road Tax Calculator?

The Road Tax Calculator is a helpful online tool for vehicle owners in Singapore. It estimates the road tax you need to pay based on your vehicle’s engine capacity, fuel type, usage, and registration details. Whether you're driving a petrol car, electric vehicle, motorcycle, or goods vehicle, this tool simplifies the process of understanding your tax obligations.

Why Use the Road Tax Calculator?

Calculating road tax manually can be time-consuming and error-prone. This calculator helps ensure accuracy and clarity by giving you:

  • Annual and pro-rated tax estimates for various payment periods
  • Breakdowns by engine capacity tier to see how your vehicle compares
  • Late penalty projections if your payment is overdue
  • Rebate calculations for off-road months or special vehicle features
  • Payment comparison charts to help choose the best option

How to Use the Calculator

  1. Select your vehicle type (e.g., car, motorcycle, bus).
  2. Enter your vehicle’s engine capacity in cc (cubic centimeters).
  3. Choose the fuel type (e.g., petrol, electric).
  4. Provide the registration date of your vehicle.
  5. Select your payment duration (6, 12 months, or custom).
  6. Set the start date for the tax period.
  7. Indicate your vehicle’s age category and usage type.
  8. Optionally, add details for late payment days or off-road months.
  9. Click "Calculate Road Tax" to view your results.

Road Tax Calculation Formula

Pro-rated Road Tax:
\( \text{Pro-rated Tax} = \left( \frac{\text{Annual Rate}}{12} \right) \times \text{Payment Months} \)

Late Payment Penalty:
If ≤ 30 days: \( \text{Penalty} = 10\% \times \text{Base Amount} \)
If 31–60 days: \( \text{Penalty} = 20\% \times \text{Base Amount} \)
Interest: \( \text{Penalty} += 1\% \times \text{Months Late Beyond 60 Days} \times \text{Base Amount} \)

Off-Road Rebate:
\( \text{Rebate} = \left( \frac{\text{Annual Rate}}{12} \right) \times \text{Off-Road Months} \)

How the Calculator Helps

This calculator supports vehicle budgeting, road tax compliance, and future planning by giving drivers a clear idea of:

  • How much road tax they owe today
  • When their next payment is due
  • What rebates or penalties might apply
  • How different engine capacities impact cost
  • The annual Financial impact of driving specific vehicle types

It is especially useful for owners of electric vehicles, hybrid cars, and classic cars, where special rates may apply.

Frequently Asked Questions (FAQ)

  • Is this calculator official?
    No, it's a simulation tool. Please verify final amounts with the LTA (Land Transport Authority).
  • Does it include discounts or rebates?
    Yes. It includes rebates for off-road periods and discounts for classic or accessible vehicles.
  • Can it calculate late penalties?
    Yes. Enter how many days late the payment is, and the calculator will estimate the additional cost.
  • What if I change my vehicle’s usage?
    Update the “Vehicle Usage” section to reflect changes and recalculate to see the updated tax.
  • Can it show comparisons?
    Yes. It can display how different engine capacities affect road tax and compare payment periods.

Key Terms Explained

  • Engine Capacity: The size of your engine, measured in cubic centimeters (cc).
  • Pro-rated Payment: Paying only for the number of months you're using the vehicle.
  • Late Penalty: Extra charges for missing your road tax due date.
  • Off-road Rebate: A refund for months when your vehicle wasn’t used on public roads.
  • Classic Car: Vehicles over 25 years old, eligible for discounted tax rates.

Conclusion

The Road Tax Calculator is a practical tool for staying informed about your financial responsibilities as a vehicle owner. With its ability to estimate costs, show comparisons, and include relevant discounts or penalties, it saves time and avoids surprises. Whether you're renewing tax for your family car or exploring the cost of an electric upgrade, this calculator provides reliable insights in just a few clicks.