How to Write a Thesis Statement (With Formula + Example)

A good thesis statement has two parts and once you know the formula, you can write one in less than a minute.

A thesis statement is your essay’s main point, written in one clear sentence. It combines the topic of your essay with your specific essay question, and your position or perspective on that question. Ultimately, it tells the reader what you think (your position) and why you think that (your key reasons).

The good thing is that thesis statements are easy to write…once you copy this formula. I’ve also included example thesis statements for all the main types of essays at the end of this guide.

You can also watch my video on how to write a thesis statement in less than a minute here:

Why Thesis Statements Matter

There are two big reasons thesis statements are so important.

1. They make your essay clear.
Without a thesis statement, your essay has no direction. The reader has no idea what your main argument is or how your body paragraphs relate to it. That’s when essays start to sound like a list of random ideas.

2. They’re worth marks.
Most marking rubrics include specific points for your thesis statement, because it shows that you understand your topic and can express your opinion clearly.

The Two Parts of Every Thesis Statement

Every thesis statement has two essential parts:

1. Your position.
What’s your main argument or viewpoint?
For example, if the essay topic and question is ‘the effects of social media on high school students‘, are you arguing that it’s positive or negative?

2. Your reasons.
Why do you believe that?
You don’t need to explain the reasons in detail yet — just list the main ideas that support your position.

The reasons you choose will depend on the type of essay you have to write. If you’re not sure what type of essay you have or how to structure it you can use this helpful guide here.

Thesis Statement Formula

Here’s the simple thesis statement formula you can copy and use:

[Your Position] because [reason one], [reason two], and [reason three].

That’s it. You can adapt it to fit any essay question. Let’s look at how easy this is.

Example Thesis Statement

Online learning should be optional because it increases accessibility, supports diverse learning styles, and reduces costs.

If we break it down:

• Position: Online learning should be optional. (I’m not saying it should be compulsory, or not available, but optional – that’s my opinion)
• Reasons: It increases accessibility [reason 1], supports diverse learning styles [reason 2], and reduces costs [reason 3].

This one sentence gives you (and the reader) a complete roadmap of your essay. From here you can use these three reasons to build your body paragraphs – you’re welcome to use this essay outline guide for that.

What Makes a Thesis Statement Strong

A great thesis statement is:

• Specific: It tells us exactly what you’re arguing. So, one clear position. It helps to use clear language and easy to understand words (not complicated ones) – download your free PDF to simple academic words here.
• Focused: It doesn’t try to cover everything. There will always be more reasons for a particular position or opinion, but you just want to pick the strongest ones. If it’s a really large essay (e.g., 5000 words, then you can expand beyond 3 reasons).
• Concise: It fits in one sentence. The rest of your essay is for explaining the thesis statement.
• Defensible: You can support it with evidence. The last thing you want is to spend hours searching for information that backs up your reasons (that you may never find). You want it to be easy and fast to find journal articles and books to make writing your essay easy too.

Common Mistakes to Avoid

• Being too vague:
  “Social media affects students” doesn’t tell us how or why, e.g., does it affect them positively or negatively?
• Adding too much detail:
  Don’t explain every reason in the thesis statement, that’s what your body paragraphs are for.
• Writing a question:
  Your thesis should answer the question, not ask it.

How to Write Yours Step-by-Step

1. Read your essay question carefully.
   Work out what the topic is asking you to argue.
2. Decide your perspective or opinion.
   Take a position, even if the topic is complex, you can still choose a side.
3. List your top three reasons.
   Write short, clear points (these will become your body paragraphs later).
4. Combine them using the formula.
   [Position] because [reason one], [reason two], and [reason three].
5. Check it sounds clear when read out loud.
   If you can say it in one breath, it’s probably clear enough.

I also explain how to write an essay introduction step-by-step here.

Thesis Statement Examples For The Main Essay Types:

1. Argumentative Essay 

Topic: Should university attendance be mandatory? 

Thesis Statement: 

University attendance should not be mandatory, because students learn at different paces, forced attendance reduces motivation, and online resources now offer equivalent value. 

✅ Position: Attendance should not be mandatory 
✅ Reasons: Learning differences, motivation, online access 

2. Compare and Contrast Essay 

Topic: Online learning vs in-person learning 

Thesis Statement: 

While both formats have value, online learning offers greater flexibility, reduces commuting time, and supports independent learning more effectively than in-person classes. 

✅ Position: Online learning is more effective 
✅ Reasons: Flexibility, time-saving, independence 

3. Expository Essay 

Topic: The causes of procrastination in university students 

Thesis Statement: 

Procrastination in university students is often caused by fear of failure, poor time management skills, and a lack of motivation. 

✅ Position: Procrastination has 3 key causes 
✅ Reasons: Fear, time management, motivation 

4. Descriptive Essay 

Topic: A university library as a study space 

Thesis Statement: 

The university library creates the ideal study environment because of its calming atmosphere, structured layout, and quiet, focused energy. 

✅ Position: Library is the ideal study space 
✅ Reasons: Atmosphere, layout, energy 

5. Narrative Essay 

Topic: Your first week at university 

Thesis Statement: 

My first week at university was overwhelming but transformative because I faced unexpected challenges, met lifelong friends, and discovered a new sense of independence. 

✅ Position: First week was transformative 
✅ Reasons: Challenges, friendships, independence 

6. Reflective Essay 

Topic: Learning from a group assignment 

Thesis Statement: 

Working on a group assignment taught me the importance of communication, the need to manage conflict early, and the value of shared responsibility. 

✅ Position: Group work taught key lessons 
✅ Reasons: Communication, conflict, responsibility 

And remember, your thesis statement doesn’t need to be perfect. It just needs to be clear.