Although he is classified as an Expressionist artist, he rejected both the term and the movement. In the 1920s, he was associated with the New Objectivity (Neue Sachlichkeit), an outgrowth of Expressionism that opposed its introverted emotionalism.

Unlike several of his avant-garde contemporaries, Beckmann rejected non-representational painting; instead, he took up and advanced the tradition of figurative painting. He greatly admired not only Cézanne and Van Gogh, but also Blake, Rembrandt, and Rubens, as well as Northern European artists of the late Middle Ages and early Renaissance, such as Bosch, Bruegel, and Matthias Grünewald. His style and method of composition are partially rooted in the imagery of medieval stained glass.

Engaging with the genres of portraiture, landscape, still life, and history painting, his diverse body of work created a very personal but authentic version of modernism, one with a healthy deference to traditional forms.