How to Read Your Vehicle Registration Document Correctly: Focus on Tax Power

The gray card, or registration certificate, is an essential document for any vehicle owner. It contains a multitude of information, sometimes complex, that can be confusing. Among these data, the fiscal power is a fundamental element that is often misunderstood.

The fiscal power, indicated under section P. 6, is not simply an indication of the actual engine power. It represents a value calculated from several parameters of the vehicle, such as engine displacement and CO2 emissions. Understanding this value can help you anticipate the costs related to registration and regional tax, as well as better assess the performance of your vehicle.

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What is the fiscal power on the gray card?

The fiscal power, also called fiscal horsepower, appears on the gray card in section P. 6. This data is fundamental for determining several administrative and financial aspects related to your vehicle. It is calculated based on the engine displacement and CO2 emissions, but does not indicate the actual engine power, measured in DIN horsepower.

Tax administration and SIV regulation

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  • The tax administration establishes the fiscal power in gray card horsepower. This measure directly impacts the amount of taxes to be paid.
  • The SIV regulation (Vehicle Registration System) imposes a specific rate based on this fiscal power.

Financial implications

  • The fiscal power determines the regional tax, the professional training tax, the polluting vehicles tax, and the fixed tax included in the price of the gray card.
  • This data also impacts the cost of car insurance.

Relevant documents

  • Beyond the gray card, the fiscal power appears on the transfer certificate, the purchase invoice, and the certificate of conformity.
  • The prefectures and sub-prefectures provide these documents during registration.

Consider these elements to understand the impact of fiscal power on your administrative and financial obligations. The accuracy of section P. 6 should not be overlooked.

gray card and fiscal power

How to calculate the fiscal power of a vehicle?

To determine the fiscal power of a vehicle, follow a precise formula. This takes into account the engine displacement and CO2 emissions. These two elements play a key role in the calculation.

The calculation formula

  • For vehicles registered before January 1, 2020: Fiscal power = (0.00018 × Displacement) + (0.0387 × CO2 emissions)
  • For vehicles registered after January 1, 2020: Fiscal power = (0.00018 × Displacement) + (0.0242 × CO2 emissions)

These formulas yield a result in fiscal horsepower. Note that DIN horsepower, which measures the actual engine power, is different from fiscal horsepower.

Example of calculation

Let’s take a vehicle with an engine displacement of 1,998 cm³ and CO2 emissions of 120 g/km. For a vehicle registered after January 1, 2020, the calculation would be as follows:

Fiscal power = (0.00018 × 1998) + (0.0242 × 120) = 0.35964 + 2.904 = 3.26364

Rounded up to the nearest whole number, the fiscal power will be 4 fiscal horsepower.

Why is this calculation fundamental?

The fiscal power directly determines several taxes, such as the regional tax and the polluting vehicles tax. It also influences the cost of car insurance. Therefore, consider these elements for optimal management of your vehicle.

How to Read Your Vehicle Registration Document Correctly: Focus on Tax Power