The official journal of the International Society for Third-Sector Research (ISTR), Voluntas is an interdisciplinary journal that provides a central forum for worldwide research in the area between the state, market, and household sectors. The journal combines full-length articles with shorter research notes (reflecting the latest developments in the field) and book reviews.

Voluntas is essential reading for all those engaged in research on the Third Sector (voluntary and nonprofit organizations) including economists, lawyers, political scientists, psychologists, sociologists, and social and public policy analysts. It presents leading-edge academic argument around civil society issues in a style that is accessible to practitioners and policymakers.