The study concerns the principles of juvenile criminal liability. The model of dealing with minors is a rational one. The rules, manner and procedure of dealing with such persons differ signifi cantly from the principles of adult responsibility. Solutions applied to minors are aimed at ensuring their proper development. They are to counteract their stigmatisation and social exclusion. The criminal liability of young perpetrators has given rise to a number of practical and theoretical controversies for many years. First of all, it should be emphasised that one legal act will hold an adult liable, and another, a minor.