21. Is there a limit on in-kind donations to political parties?

"A contribution - in money or in-kind, directly or indirectly, in cash or in written commitment... except a  volunteering act that is not the volunteer's only occupation."

Source: State Comptroller Guidlines according to Party Financing Law Concerning Managing the Financial Affairs of a Party Parliamentary Group, article 1. 

In-kind donations for parties are treated the same as donations in money, except  a volunteering act that are not part of the volunteer's occupation.