Several Factors Affecting Vehicle Tax
The amount of tax listed on the vehicle registration document (STNK) does not appear out of nowhere. There are several vehicle tax factors that determine the figure, starting from the market price of the car, its type and function, the number of vehicles you own, to the discipline of payment. By understanding this, you can estimate your annual budget more accurately and avoid additional costs that could actually be prevented.
This article discusses these factors in order, based on the latest regulations applicable in 2026.
What is Included in Vehicle Tax?
The vehicle tax you pay every year consists of several components:
- PKB (Motor Vehicle Tax): annual tax on vehicle ownership.
- PKB Option: an additional charge of 66% of the owed PKB that becomes the revenue of the local government, effective from January 5, 2025.
- SWDKLLJ: mandatory contribution to the road traffic accident fund.
- BBNKB and its options: paid when the vehicle changes ownership or is newly purchased.
The basic formula is NJKB × weight × rate. Each factor below affects one of the elements in that formula.
1. Motor Vehicle Selling Value (NJKB)
NJKB is the largest factor affecting the tax amount. Its value refers to the general market price of the vehicle in the first week of December of the previous tax year, and is set without the cost of document processing and taxes. The government updates NJKB every year; for 2026, the adjustment is regulated in the Minister of Home Affairs Regulation Number 11 of 2026, effective from April 1, 2026.
Two things shape NJKB: the model and variant of the vehicle, as well as the year of manufacture. More expensive or newer cars generally have a higher NJKB, thus their taxes are also higher.
2. Vehicle Weight
Weight is not just the weight of the car. Weight is a coefficient that reflects how much the vehicle damages the road and pollutes the environment. One consideration is axle pressure, which is viewed from the number of axles, the number of wheels, and the weight of the vehicle.
NJKB is multiplied by this weight to produce the basis for tax imposition. Therefore, two vehicles with similar prices can have different taxes if their weights are not the same.
3. Number of Vehicles Owned
The number of vehicles registered under one owner also determines the rate. Second and subsequent ownerships may be subject to progressive tax, which is a rate that increases gradually according to the order of ownership.
There are several provisions you need to know:
- Vehicles are considered owned by the same person if the name and address or Family Card (KK) of the owner are the same, with the same type of vehicle.
- Owning one car and one motorcycle is not subject to progressive tax, as they are different types.
- Progressive rates vary in each province as they are set through Regional Regulations.
- Vehicles that have been sold should have their data blocked immediately to avoid being recorded as your property and triggering progressive rates.
4. Type and Function of the Vehicle
The type of vehicle affects its weight and tax treatment. Vehicles with different numbers of wheels and axles, or with larger payloads, have different axle pressures on the road. This is evident in commercial vehicles such as pickups, which are designed to transport goods and are generally used for business operations.
The function of the vehicle also plays a role. Private vehicles, public vehicles, and official vehicles may be subject to different provisions. Government official vehicles, for example, are not subject to progressive tax. Since the details depend on local regulations, those using vehicles for business should ensure their vehicle classification at the local Samsat.
5. Vehicle Registration Area
The PKB rate is set through the Regional Regulation of the province where the vehicle is registered. The HKPD Law only sets the maximum limit, so the rate and options can vary between regions. Two identical vehicles registered in different provinces may have different tax bills.
6. Timeliness of Payment
The last factor is entirely in your hands: when the tax is paid. Delays add charges in the form of late vehicle tax penalties, which consist of two parts:
- PKB Penalty: 25% per year of the PKB value, calculated proportionally per month of delay (1%) according to government regulation number 35 of 2023.
- SWDKLLJ Penalty: Rp100,000 per year for four-wheeled vehicles.
Here is a simulation for a car with a PKB of Rp2,000,000:
|
Delay |
PKB Penalty |
SWDKLLJ Penalty |
Total Penalty |
|---|---|---|---|
|
1 month |
Rp41,667 |
Rp100,000 |
Rp141,667 |
|
3 months |
Rp125,000 |
Rp100,000 |
Rp225,000 |
|
6 months |
