MLA Section Headings

Section headings are the titles you place over the parts of a longer paper — "Introduction," "Results," "Discussion," and so on. They break an essay into readable blocks and signal its structure to the reader. MLA allows them, but it leaves most of the design decisions to you. This guide explains what MLA rules you must follow, what is simply recommended practice, and how to keep headings consistent across a multi-section paper.

First, a clarification: the term "MLA heading" is often used for two different things. The first-page heading is the four-line block at the top of page one containing your name, instructor, course, and date (covered in our first-page format guide). The running header is your last name and page number in the top-right corner of every page (covered in the MLA header guide). Section headings are neither of those — they are titles you give to the parts of your essay that appear in the body text. Our heading vs. header comparison walks through the distinctions side by side.

What MLA Actually Requires

MLA's guidance on internal headings is brief and flexible. The MLA Handbook covers it in a short section, and the MLA Style Center expands on it. The core points:

• Headings are optional. Use them when they help organize a longer, more complex paper — not to paper over a weak structure or an underdeveloped section.
• There is no mandated visual style for each level. What MLA requires is consistency: every heading at the same level must look the same.
• Internal headings should be flush with the left margin. The only centered heading in a paper is the paper's own title.
• Capitalize headings in title case, the same way you capitalize titles of works.
• Keep headings short and descriptive. Never use all caps.
• Do not use numbers or letters to mark heading levels unless your discipline conventionally does so.
• No heading level should appear only once. If you use one level-1 heading, you need at least two.

Everything beyond those rules — exact font styling, whether to bold, position of subheadings — is your choice, so long as it stays consistent and signals a clear descending order of prominence.

Heading Levels

MLA treats headings as working in levels of prominence. The paper's title is the highest level and must be the most prominent element on the page (centered, plain text). The first level of section headings below the title is level 1, followed by subordinate subheadings at levels 2 and 3.

A widely used styling scheme, shared by the Purdue OWL and common in academic writing, looks like this:

The logic is a descending scale: level 1 is bold and larger, level 2 is italicized, level 3 breaks to a bolder treatment again when a third tier is necessary. What matters is that each tier is clearly less prominent than the one above it, and that every heading in a given tier matches its siblings exactly.

Some instructors and departments supply their own five-level scheme with underlines and centering at specific tiers. If your course provides one, follow it. If not, the bold-italic-centered pattern above is the safest default.

Position and Spacing

Internal headings sit flush left — never indented, never centered. MLA's reason is practical: a flush-left heading cannot be mistaken for a block quotation, which is indented half an inch. Avoid all-caps headings, and include a line space above and below each heading so the reader can see the break clearly.

Numbering Headings

MLA generally discourages numbered headings. The Handbook points out that a heading labeled "1" commits you to a heading labeled "2," and a heading labeled "a" commits you to a heading labeled "b." If your field — for example, some sciences and technical disciplines — conventionally numbers sections, then numbered headings are acceptable; otherwise skip them. When numbering is conventional, something like "1. Method" and "1.1 Participants" is the normal pattern, but recognize that this comes from disciplinary convention, not from MLA itself.

Balance and Parallel Structure

Two writing rules make section headings read well.

Balance. No internal heading level should appear exactly once. If you have one level-1 heading, you need a second level-1 heading, otherwise the structure looks lopsided. The exceptions are the paper title, the "Notes" heading, and the "Works Cited" heading.

Parallel structure. Headings at the same level should match grammatically. If one heading is a noun phrase ("The Economic Argument"), the others should be noun phrases too ("The Political Argument," "The Cultural Argument") rather than mixing in a full sentence ("Here We Discuss the Climate"). Parallel headings let readers see the sections as a coherent set.

Keep headings short. The MLA Handbook advises that shorter is better, and a heading that reads like a mini-thesis ("Little Red Riding Hood's Journey Through the Forest as a Story About Growing Up") should be cut down ("The Journey Motif").

Example: Headings in a Multi-Section Paper

Here is how the opening pages of a three-section paper might look. Notice the paper title is centered in plain text; the internal headings are flush left and styled by level; and the running header appears on every page.

In longer projects — theses, dissertations, and book-length work — the first heading level can be the chapter titles themselves, with two or three subheading levels beneath. Shorter essays, including most undergraduate papers of five to fifteen pages, rarely need more than one level of heading and often none at all.

When Not to Use Section Headings

Headings should never be used to compensate for poor structure or to explain an underdeveloped idea. The MLA Style Center is explicit about this: avoid overusing headings in short projects. If your paper is a continuous argument that flows from one paragraph to the next, adding headings can actually fragment the reading. A five-paragraph essay, a close reading, and most analytical papers under a few thousand words usually work better without them. If you are unsure whether headings would help, ask your instructor whether they expect section headings in this particular assignment.

Common Mistakes

• Centering internal headings — only the paper title is centered.
• Capitalizing headings inconsistently (Title Case in one, sentence case in the next).
• Using a different style for each heading at the "same" level — bold here, italicized one page later.
• Writing headings in all capital letters.
• Adding a single lonely heading for one of several sections.
• Using automatic numbered styling when your discipline does not expect it.
• Placing a heading at the very bottom of a page with its text starting on the next page.