APA 7th edition uses five heading levels: Level 1 is bold, centred, Title Case; Level 2 is bold, left-aligned, Title Case; Level 3 adds italics; Levels 4 and 5 are indented, bold, end with a period, with Level 5 also italicised.
Level 1 headings mark main sections such as Method or Discussion, while Level 2 headings introduce subsections beneath them. Most undergraduate essays only need one or two heading levels, whereas longer dissertations and reports often use three or more.
Levels 4 and 5 are the ones writers most often misapply: the heading is indented like a paragraph, ends with a period, and the body text begins on the very same line rather than dropping to a new one.
Title Case means capitalising all major words while keeping short conjunctions, articles and prepositions such as ‘the’, ‘of’ and ‘and’ lowercase, unless they start the heading. Consistent capitalisation across every heading level keeps your paper looking professional.
For worked examples of each level applied to a full paper, see our APA style guide hub; if you would rather have a formatting check done for you, our referencing and citation support service reviews heading structure too.


