\[ \text{Deduction} = \frac{\text{Vehicle Cost}}{\text{Years}} \times \text{Deduction Rate} \]
Deduction rates vary by vehicle type and year as follows:
\[ \text{Depreciation} = \frac{\text{Vehicle Cost}}{\text{Years}} \]
\[ \text{Taxable Income} = \text{Turnover} - \text{Deduction} - \text{Depreciation} \]
\[ \text{Tax Savings} = (\text{Turnover} \times \text{Tax Rate}) - (\text{Taxable Income} \times \text{Tax Rate}) \]
\[ \text{ATN} = \max\left(1600,\ \frac{6}{7} \times \text{Vehicle Cost} \times \text{Age Percentage} \times \frac{\text{CO2 Percentage}}{100}\right) \]
Where CO2 percentage is calculated as:
\[ \text{CO2 Percentage} = \begin{cases} 4\% & \text{for electric vehicles} \\ 5.5 + 0.1 \times (\text{CO2 Emissions} - 78) & \text{for other vehicles} \end{cases} \]
\[ \text{Net Tax Savings} = \text{Tax Savings} - (\text{ATN} \times \text{Tax Rate}) \]
\[ \text{Total Cost} = \text{Vehicle Cost} - \text{Net Tax Savings} + \text{ATN} + \text{Solidarity Tax} \]