An outline is a plan for a paper written before the full draft. In an MLA course, instructors often ask students to submit an outline along with — or instead of — a rough draft, and many students worry that MLA has a rigid outline template they must match. It does not. MLA never prescribes a single outline format, and this guide will show you what is actually required, what is common practice, and how to choose a structure that fits your writing process.
Does MLA Require a Specific Outline Format?
No. Neither the MLA Handbook nor the MLA Style Center defines a mandatory outline format, because the outline is a planning tool rather than a feature of the finished paper itself. If your instructor assigns an outline, their handout or syllabus defines the required format — not MLA. Before you build anything, check the assignment: many instructors specifically ask for a topic outline, a sentence outline, or a minimum number of levels.
That said, two sets of rules do apply. First, the general outlining conventions described below are so widely used that they function as an unofficial standard. Second, if your outline is submitted as a written document in MLA format, the same global formatting rules apply to it as to any MLA page: one-inch margins, a readable 12-point font, double spacing, and the running header with your last name and page number.
The Alphanumeric Outline
The most common outline structure uses alternating numbers and letters to show levels of importance. Each deeper level indents further to the right:
- Level 1: Roman numerals (I, II, III)
- Level 2: capitalized letters (A, B, C)
- Level 3: Arabic numerals (1, 2, 3)
- Level 4: lowercase letters (a, b, c)
Few college papers need all four levels; two or three is typical. The rule of division is that a heading must be split into at least two parts — you cannot write "A." without a "B." under the same "I."
Topic outline example
A topic outline uses short words and phrases rather than full sentences. It is fast to produce and shows the skeleton of the essay at a glance.
The Rhetoric of the Opening Scene
I. Establishing expectations
A. The first minutes as preview
B. Setting versus plot
II. Parasite: the crowded apartment
A. Vertical space and class
1. The half-basement window
2. The street-level view
B. Noise as constant pressure
III. The Silence of the Lambs: the lake house
A. Isolation and surveillance
B. The morning run as control
IV. Conclusion: space as character
Full-sentence outline example
A sentence outline writes every point as a complete sentence. It takes longer, but it forces you to articulate your claims fully, which makes it the better choice before writing a demanding paper. Many instructors require sentence outlines for research papers.
I. The opening scene establishes what kind of story a film will tell.
A. The first minutes teach the audience how to watch the film.
B. Setting often does more work than dialogue in these moments.
II. Parasite opens with a family fighting for vertical space.
A. The half-basement apartment positions the family below street level.
B. The sound design keeps the crowded city present in every shot.
III. The Silence of the Lambs opens with isolation and discipline.
A. The lake house is removed from any urban center.
B. The morning run establishes control that the plot will break.
The Decimal Outline
A decimal outline uses numbers only, with each new level added as a decimal. It is compact and common in fields where numbered sections are already expected. The same paper would look like this:
1. Establishing expectations
1.1 The first minutes as preview
1.2 Setting versus plot
2. Parasite: the crowded apartment
2.1 Vertical space and class
2.2 Noise as constant pressure
3. Conclusion: space as character
The decimal format has no letters and keeps indentation minimal. Use it if your instructor asks for it or if your discipline numbers sections as a matter of course. Otherwise the alphanumeric format is the safer, more familiar default.
Three Principles That Make an Outline Work
Regardless of format, strong outlines follow a few structural rules.
Parallelism. Points at the same level should match grammatically. In a topic outline, use phrases throughout, not phrases in one section and sentences in the next. In a sentence outline, every point is a full sentence.
Coordination. Points at the same level carry roughly equal weight. If a "B." under a heading is a minor detail while the "A." is a major claim, the outline is unbalanced.
Subordination. Each deeper level supports the level above it. Your sub-points should be evidence, examples, or elaboration of the point they sit under — not unrelated tangents. When content runs out, trim the level rather than forcing a fourth tier.
Formatting a Submitted Outline in MLA Style
When your outline is its own page or document, treat it like a short MLA paper:
- Include the standard four-line heading (your name, instructor, course, date) unless the assignment says otherwise — covered in the first-page format guide.
- Center the title of the outline ("The Rhetoric of the Opening Scene") on the line below the heading, in plain text.
- One-inch margins, double spacing, 12-point font, left alignment.
- Running header with your last name and page number in the top-right corner.
- Indent each level consistently so the structure is obvious at a glance.
A Complete Argumentative Essay Skeleton
To see how a full-sentence outline handles a complete paper, here is a five-paragraph argumentative essay mapped out with the alphanumeric structure. Note how the thesis at the top governs every level beneath it, and how each body point carries at least two supporting details.
The Purpose of the College Writing Course
Thesis: First-year writing courses should teach transferable writing skills, not only academic essays.
I. The academic essay is not the end goal.
A. Most graduates will not write literary analyses after college.
B. Employers report a demand for clear professional communication.
II. The core skills transfer across contexts.
A. Claims and evidence transfer to reports and proposals.
1. Structuring an argument under deadline.
2. Reading sources skeptically.
B. Revision skills transfer to editing for an audience.
III. Courses can teach both without sacrificing rigor.
A. Assignments that vary by genre and audience.
B. A final portfolio that demonstrates both modes.
IV. Conclusion: writing courses should serve the writer's whole future.
Every Roman numeral becomes a paragraph or a block of paragraphs in the draft. The thesis sits at the top because it is the claim the outline exists to support; if a point cannot trace back to it, the point either belongs elsewhere or does not belong in the paper.
From Outline to the Paper Itself
An outline is only useful if the essay follows it. As you draft, remember that the outline's headings become the shape of your paragraphs: the introduction sets up the thesis (see our MLA introduction guide), each Roman numeral becomes a developed section or group of paragraphs, and the essay closes with a conclusion. An outline that lists "Introduction," "Three body points," and "Conclusion" without saying what each contains has not yet done its job — the whole point of the planning phase is to decide what each section will argue.
For a view of what the finished product should look like once your outline becomes prose, see our annotated MLA paper example.
Common Mistakes
- Assuming MLA mandates an outline format — check your instructor's assignment instead.
- Having an "A." without a "B." or a "1." without a "2."
- Mixing phrases and full sentences in a single outline.
- Burying the thesis: an outline that never states the governing claim leaves the essay with no center.
- Going four levels deep for every point, whether it needs it or not.
- Writing the outline after the draft and pretending the draft planned itself.
Format Your Paper — or Your Outline
Once your outline is solid, build the MLA-formatted draft with the free MLA Formatter, then verify the result with the Format Checker.