These reflections on contemporary Polish regulations on active legal capacity flowing from CRPD Article 12 standards, as analysed in this chapter, have been divided into four parts. The first of these generally presents the most important substantive and procedural aspects of active legal capacity and its limitations, while the three remaining parts offer in-depth analyses of three institutions designed to support persons with disabilities participating in civil law transactions: curatorship for partially incapacitated persons, curatorship for persons with disabilities and plenary guardianship for fully incapacitated persons.