Everything You Need to Know About Road Tax in Bihar

Road tax in Bihar is a state-imposed tax collected by the Regional Transport Office (RTO) from vehicle owners. The tax contributes towards road maintenance, transport infrastructure development, and traffic management across the state.

Every registered vehicle in Bihar, including private cars, bikes, taxis, buses, and goods carriers, must pay the applicable road tax. In most cases, the payment is completed during vehicle registration itself.

The tax amount may vary depending on:

• Vehicle category
• Ex-showroom price
• Engine capacity
• Commercial or private usage
• Seating or carrying capacity
• Vehicle age 

As road tax rules and rates may change from time to time, vehicle owners should check the latest information on the official Bihar Transport Department portal before making any payment.

The Bihar government calculates road tax based on several factors related to the vehicle and its usage. Different tax slabs may apply depending on the type, value, and specifications of the vehicle.

Some of the key factors considered during road tax calculation include:

• Seating capacity of the vehicle, such as five-seater or seven-seater vehicles. 

• Vehicle category, including two-wheelers and four-wheelers.

• Vehicle age, as the Insured Declared Value (IDV) generally reduces over time.

• Engine capacity measured in cubic capacity (CC).

• Purpose of usage, whether personal or commercial.

Road tax in Bihar is calculated according to the provisions of the Bihar Motor Vehicles Taxation Act, 1951. For many private two-wheelers and four-wheelers, the tax is generally based on the vehicle’s original cost and may range between 8% and 12%, depending on the applicable vehicle category and tax slab.

Road tax rates in Bihar differ according to vehicle type and value. The following table provides a general overview of commonly applicable rates.

Private Cars

Two-Wheelers

Commercial Vehicles

Note: The above rates are indicative and subject to change as per Bihar Transport Department notifications.

Road tax rates, exemptions, and applicable rules may change over time. Vehicle owners are advised to check the latest details on the official Parivahan Portal or the respective state transport department website before making any payment.

The Bihar government offers digital tax payment facilities that simplify the registration and renewal process for vehicle owners. Bihar road tax online payment can usually be completed in a few simple steps.

Online Method

Follow these steps for road tax payment online in Bihar:

• Visit the official Bihar Transport Department or Parivahan portal.

• Select the vehicle tax payment option.

• Enter the vehicle registration number.

• Verify owner and vehicle details.

• Check the applicable tax amount.

• Complete payment using UPI, debit card, credit card, or net banking.

• Download and save the payment receipt.

Note: Vehicle owners should carefully verify all details before payment submission to avoid correction requests later.

Offline Method

• Visit the nearest DTO or RTO office with the required documents.
• Submit the documents for verification.
• The concerned officer will verify the vehicle details and calculate the applicable road tax.
• A payment challan will then be issued.
• Pay the applicable tax amount at the designated payment counter.
• Collect the payment receipt and keep it safely for future reference.

Vehicle owners may need the following documents while paying road tax or completing vehicle registration formalities:

• Registration Certificate (RC) 

• Valid insurance policy 

• Address proof 

• Identity proof 

• Pollution Under Control (PUC) certificate 

• Invoice or purchase receipt 

• Previous tax receipt, if applicable 

Commercial vehicle owners may also require permits and fitness certificates depending on the vehicle category.

Maintaining updated documentation can help ensure faster approval during online vehicle tax payment in Bihar.

Failure to pay Bihar road tax within the specified timeline may result in penalties under applicable motor vehicle regulations.

Possible consequences may include:

• Additional fines
• Interest on delayed payments
• Suspension of vehicle-related services
• Legal notices in severe cases.

Authorities may also restrict certain RTO services until pending dues are cleared. Vehicle owners should therefore maintain timely tax compliance and preserve payment receipts safely.

While road tax in Bihar ensures better road infrastructure, motor insurance provides complementary financial protection for vehicle owners. Motor insurance covers liabilities from accidents, theft, and vehicle damage. These are situations where road tax may not offer protection. 

Together, timely road tax compliance and active motor insurance create a robust safety net for Bihar vehicle owners navigating daily traffic and unforeseen circumstances.

Understanding road tax in Bihar can help vehicle owners avoid delays and stay compliant with transport regulations. With online payment options now available, paying road tax has become quicker and more convenient. Keeping road tax payments, vehicle documents, and motor insurance updated can also support a smoother ownership experience.

Vehicle owners can also explore motor insurance solutions from SBI General Insurance for added protection on the road.

Note: The given information has been compiled from digitally available resources and is indicative in nature. It is subject to change due to several factors. Individuals are advised to verify information with their nearest RTO before proceeding. 

1. What is the RTO tax rate in Bihar?

The Bihar RTO tax rate depends on factors such as vehicle type, invoice value, and usage category. Private vehicles generally attract tax ranging between 6% and 10%.

2. How much tax is charged on a ₹20 lakh car?

A car priced around ₹20 lakh may attract approximately 9% to 10% road tax, depending on the applicable Bihar transport regulations.

3. Which state has the highest RTO tax?

Road tax structures differ across states and may change periodically. States with higher vehicle taxation often include Karnataka, Maharashtra, and Tamil Nadu for premium vehicles.