Tax and Social Security Treatment of Company Cars During Sick Pay

Tax and Social Security Implications of Company Cars During Sick Pay in Germany

On April 28, 2026, Germany’s AOK health insurance fund clarified the tax and social security treatment of employer-provided vehicles (Dienstwagen) when employees are receiving sick pay (Krankengeld). The guidance addresses a long-standing ambiguity: whether personal use of a company car during sick leave should be classified as a taxable fringe benefit and subject to social security contributions. The ruling confirms that such use remains taxable under German law, with implications for both employers and employees.

Key Legal Framework

The AOK’s guidance, published in response to inquiries from employers and tax advisors, aligns with Germany’s Einkommensteuergesetz (Income Tax Act) and Sozialgesetzbuch (Social Code). Under these regulations, employer-provided vehicles are considered a non-cash benefit (geldwerter Vorteil) when used for personal purposes. This principle applies regardless of the employee’s employment status—whether actively working or on sick leave.

The guidance specifies that sick pay recipients must continue to report the personal use of a company car as taxable income. This includes commuting to medical appointments, running personal errands, or any other non-business driving. The value of this benefit is calculated using the same methods applied to active employees, typically based on either the 1% rule (1%-Regelung) or a detailed logbook (Fahrtenbuch).

Social Security Contributions

A critical aspect of the AOK’s clarification involves social security contributions. In Germany, sick pay is subject to social security deductions, including health insurance, long-term care insurance, pension insurance, and unemployment insurance. The guidance confirms that the taxable value of personal car use during sick leave must also be included in the calculation of these contributions.

For employers, this means adjusting payroll records to account for the fringe benefit when processing sick pay. Failure to do so could result in retroactive social security liabilities, interest charges, or penalties from tax authorities. Employees, meanwhile, must ensure they accurately report personal use to avoid discrepancies in their tax filings.

Comparison to IRS Rules in the U.S.

While the AOK’s guidance applies specifically to Germany, the issue of taxing personal use of company vehicles during periods of leave has parallels in other jurisdictions. In the United States, for example, the Internal Revenue Service (IRS) treats personal use of an employer-provided vehicle as a taxable fringe benefit, regardless of the employee’s work status. According to IRS Publication 15-B, personal use—including commuting and non-business errands—must be included in the employee’s gross income and is subject to federal income tax, Social Security, and Medicare withholding.

However, a key difference lies in the treatment of sick pay itself. In the U.S., third-party sick pay (e.g., payments from an insurance company) may or may not be taxable, depending on whether the premiums were paid with pre-tax or post-tax dollars. The IRS requires employers to report taxable sick pay on Form W-2, but the interaction between sick pay and fringe benefits like company cars is less explicitly addressed than in Germany’s guidance. Employers in the U.S. Are advised to maintain contemporaneous records of vehicle use, including during periods of disability or sick leave, to comply with IRS requirements.

Recordkeeping Requirements

The AOK’s guidance emphasizes the importance of meticulous recordkeeping for both employers and employees. German tax law requires employees to document all personal trips in a logbook, including the date, purpose, starting point, destination, and mileage. Without such records, the entire use of the vehicle may be classified as personal, leading to a higher taxable value.

Employers are responsible for ensuring these records are accurate and retained for at least six years, as required by German tax authorities. The guidance recommends using digital tools, such as mileage-tracking apps or OBD-II devices, to streamline compliance. This mirrors IRS recommendations in the U.S., where employers are encouraged to use similar technologies to distinguish between business and personal use.

Exceptions and Special Cases

The AOK’s guidance acknowledges limited exceptions where personal use of a company car may not be taxable. For example, if the vehicle qualifies as a “non-personal use vehicle” (nicht-privater Nutzungsvorteil)—such as a clearly marked emergency vehicle or a cargo truck with no passenger seating—its use may be exempt from taxation. However, these exceptions are narrowly defined and do not apply to most standard company cars.

the guidance notes that if an employee is required to use the company car for work-related purposes during sick leave (e.g., an on-call doctor responding to emergencies), the business use of the vehicle remains non-taxable. However, any personal use during these periods must still be reported.

Practical Implications for Employers and Employees

For employers, the AOK’s clarification underscores the need for clear policies regarding company car use during sick leave. Companies should update their internal guidelines to explicitly state that personal use remains taxable and that employees must continue to track their mileage. Employers may also consider providing training or resources to help employees understand their reporting obligations.

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Employees, particularly those who rely on company cars for personal use, should be aware of the potential tax and social security implications of using the vehicle while on sick leave. The guidance serves as a reminder to maintain accurate records and consult tax advisors if unsure about their obligations.

The AOK’s guidance also has broader implications for Germany’s social security system. By ensuring that fringe benefits are properly taxed and included in contribution calculations, the ruling helps maintain the financial stability of the country’s health and pension funds. This aligns with Germany’s broader efforts to close tax loopholes and ensure equitable contributions from all income sources.

International Context

The treatment of company cars during sick leave varies significantly across jurisdictions. In the European Union, for example, countries like France and the Netherlands have similar rules requiring the taxation of personal use, though the specific calculation methods differ. In contrast, some countries, such as the United Kingdom, offer more lenient treatment for certain types of fringe benefits, including company cars, during periods of leave.

For multinational companies operating in Germany, the AOK’s guidance may necessitate adjustments to global mobility policies. Employers with employees who frequently transfer between countries should ensure their policies account for the tax and social security implications of company car use in each jurisdiction. Failure to do so could result in compliance risks, including double taxation or penalties for underreporting income.

Conclusion

The AOK’s guidance on the tax and social security treatment of company cars during sick pay provides much-needed clarity for employers and employees in Germany. By confirming that personal use remains taxable and subject to social security contributions, the ruling reinforces the importance of accurate recordkeeping and compliance. While the specifics of the guidance apply to Germany, the underlying principles—such as the distinction between business and personal use—are relevant to employers and tax authorities worldwide.

As work arrangements continue to evolve, including the rise of remote work and flexible leave policies, the treatment of fringe benefits like company cars will likely remain a focus for tax authorities. Employers and employees alike should stay informed about regulatory developments to avoid unexpected tax liabilities and ensure compliance with local laws.