The subject of this article is the character and meaning of the head of state’s liability. The author notices that this institution is an important factor that determines the systemic and legal position of the supreme body in the country, and adopting different solutions in this matter may make the position of heads of state significantly different, even if they seem to have a similar character. This relation has been shown on the example of regulations of liability of the heads of state in Monaco and Liechtenstein. In both countries, there is an almost identical manner of appointing to the office of a head of state and the scope of their authorities. However, the matter of liability has been regulated in a completely different way in these two countries.