# Fordonsskatt — Sweden car tax

Source page: https://valem.run/calculators/sweden/car-tax

Sweden's vehicle tax charges new petrol and diesel cars a CO2 malus in years 1-3, then a lower standard rate.

**Tax year:** 2026

## How it is calculated

Sweden's fordonsskatt applies a higher malus to new petrol and diesel cars in their first three years, based on CO2 per km, then drops to a lower standard rate.

Diesels carry an environmental factor and fuel supplement. The calculator uses an illustrative malus-era CO2 table. Estimate, not tax advice.

## Worked example

With CO₂ of 100, this model computes Fordonsskatt / år of 3,035 SEK.

## Inputs

| Name | Label | Type |
| --- | --- | --- |
| `co2` | CO₂ (g/km) | number |
| `ageYears` | Bilens ålder | number |

## Sources

- [Transportstyrelsen](https://www.transportstyrelsen.se) (checked 2026-08-05)

## What this page claims

The Valem engine reproduces this model's formula through 3 self-test cases. That shows internal consistency, not that the formula matches current law; the cited sources are the evidence for that. Estimate, not tax advice.

## For agents

- Model manifest (formula, constants, test vectors): https://valem.run/calculators/sweden/car-tax.json
- Compute by URL: https://valem.run/calculators/sweden/car-tax.json?co2=100
- MCP: https://valem.run/mcp/calculators (call `calculate` with calculator `sweden/car-tax`)