Your thesis statement is the most important sentence in your paper. It tells your reader what you're arguing or explaining, and it gives your whole paper direction. A vague thesis almost always leads to a vague paper; a sharp thesis makes the rest of the writing easier.
What is a thesis statement?
A thesis statement is one or two sentences, usually at the end of the introduction, that state the main point of your paper: your answer to the question your paper is addressing.
It isn't:
- A topic: "This paper is about remote work."
- A fact: "Many companies now allow remote work."
- A question: "Is remote work good for productivity?"
- An announcement: "In this essay I will discuss remote work."
It's a claim that the rest of your paper supports.
The qualities of a strong thesis
- Specific. It names precisely what you're arguing, not a general subject.
- Arguable or interpretive. A reasonable person could disagree, or it offers an interpretation that needs support.
- Focused. It can be supported well within your word count.
- Supportable. Evidence exists to back it up.
- Answers the prompt. If your assignment asks a question, the thesis answers it.
A simple formula to start from
A useful starting template:
[Specific claim] because [reason 1], [reason 2] and [reason 3].
Or, with a counterpoint:
Although [opposing view], [your claim] because [main reasons].
Templates are scaffolding: start with them, then revise into natural, precise language.
Examples by type of paper
Argumentative
Takes a position and defends it.
- Weak: Remote work has advantages and disadvantages.
- Strong: For knowledge-work roles, companies should adopt hybrid schedules of two to three office days a week, because this arrangement preserves the productivity gains of remote work while maintaining the collaboration and mentoring that fully remote teams often lose.
Analytical
Breaks a subject into parts and interprets them.
- Weak: The novel uses a lot of symbolism.
- Strong: In the novel, the recurring image of the locked garden represents the narrator's emotional isolation, and its gradual opening tracks her movement from grief toward reconnection with her family.
Expository (explanatory)
Explains a subject. It doesn't argue a position, but it still makes a focused, organizing claim.
- Weak: This paper explains how vaccines work.
- Strong: Vaccines protect against disease by training the immune system to recognize a specific pathogen, creating memory cells that enable a faster, stronger response upon later exposure.
Compare and contrast
Shows a meaningful relationship between two subjects.
- Weak: Online and in-person learning are different.
- Strong: While online and in-person courses can produce similar learning outcomes for self-motivated students, in-person instruction offers clear advantages for students who rely on structure and immediate feedback, which suggests that colleges should match course format to student needs rather than treating either as universally superior.
Research paper
- Weak: Social media affects teenagers.
- Strong: Research increasingly suggests that the type of social media use matters more than the amount: passive scrolling is more consistently linked to anxiety in adolescents than active communication with friends.
How to develop your thesis, step by step
- Turn your topic into a question. "Remote work" becomes "Should companies keep remote work after the pandemic?"
- Write a first answer. "Yes, mostly."
- Add the "why". "Because it improves productivity and retention."
- Add the "but". "But some collaboration suffers."
- Make it specific. Which companies? What kind of arrangement? What evidence?
- Revise after drafting. Your argument often evolves as you write. Update the thesis so it matches what your paper actually argues.
Testing your thesis
Ask these questions:
- So what? Does it say something worth reading a whole paper about?
- How and why? If a reader could ask "how?" or "why?" and your thesis doesn't hint at an answer, make it more specific.
- Could someone disagree? If not (for an argumentative paper), it may be a fact.
- Does every body paragraph support it? If a paragraph doesn't, either the paragraph or the thesis needs to change.
- Does it fit the length? A thesis for a 1,500-word essay should be narrower than one for a 20-page paper.
Where to put your thesis
In most academic essays, the thesis appears at the end of the introduction, after you've given context. Longer papers may also preview the structure in the sentence after the thesis. Some disciplines and genres place the main claim differently, so follow your instructor's guidance.
Common mistakes
- Too broad: "Technology has changed society."
- Too narrow: a single fact that needs no argument.
- A list without a claim: "This essay will discuss X, Y and Z."
- Two unrelated claims joined by "and".
- Using vague words: "good", "bad", "interesting", "important" without explaining how or why.
- Not revising it after the paper's argument changes.
Frequently asked questions
Can a thesis be two sentences?
Yes, especially in longer papers. Keep it clear and focused.
Should the thesis include my main points?
It can (a "three-pronged" thesis), which helps in shorter essays. In longer or more advanced papers, a more integrated claim often reads better.
Can I use "I" in a thesis?
It depends on your discipline and instructor. Many prefer you state the claim directly ("Companies should..." rather than "I believe companies should...").
Does every paper need a thesis?
Most academic essays and research papers do. Some reports and lab reports use a purpose statement or hypothesis instead.
Get feedback on your thesis
Our tutors and editors can review your thesis and outline and give feedback on focus, clarity and structure before you write the full paper, so the argument and writing stay yours.