The Academy is organised in two classes, one historical-antiquarian and one philosophical-philological, each with thirty members under 70 years of age. Although a maximum age is set for eligibility, membership is for life, and the Academy has now about 130 Working Members, plus a small number of Honorary Members and a larger number of Foreign Members, Swedish Corresponding Members and Foreign Corresponding Members. The Academy’s patron is His Majesty the King of Sweden.

The Academy meets for plenary sessions once a month from September to June. The anniversary of the foundation is solemnly celebrated on the 20th of March each year.