Many learners feel confused about “thankyou” and “thank you.” They look very similar, and in fast writing or texting, people often join the two words together.
But in standard English, there is a clear correct form.
Quick Answer
- Thank you = correct and standard
→ used to show gratitude - Thankyou = incorrect spelling
→ should not be used in formal or correct writing
Simple Background
The phrase “thank you” comes from two words:
- thank (a verb)
- you (a pronoun)
Together, they form a polite expression used for showing appreciation.
Over time, some people started writing it as one word (thankyou), but this is not accepted in standard English.
Clear Explanation of the Difference
What is “Thank You”?
Thank you is the correct form.
It is used to:
- Show appreciation
- Be polite
Examples:
- “Thank you for your help.”
- “Thank you so much!”
What is “Thankyou”?
Thankyou is:
- Not correct in standard English
- Often seen in informal typing or mistakes
❌ “Thankyou for your support.”
✔ “Thank you for your support.”
Comparison Table
| Form | Type | Meaning | Correct Usage |
|---|---|---|---|
| Thank you | Phrase | Expression of thanks | ✅ Yes |
| Thankyou | Incorrect | Not standard English | ❌ No |
Which One to Use and When
Always use thank you:
- In emails
- In exams
- In messages
- In formal and informal writing
Never use thankyou in correct writing.
Simple Tip to Remember
- Two words = correct
- Thank + you = always separate
Common Mistakes People Make
1. Writing it as one word
❌ “Thankyou for coming.”
✔ “Thank you for coming.”
2. Typing quickly
People often join the words by accident.
3. Thinking it’s informal but okay
Even in informal writing, “thank you” is better.
Everyday Real Life Examples
In Emails
- “Thank you for your time.”
In Messages
- “Thank you 😊”
On Social Media
- “Thank you everyone for your support!”
In Daily Life
- “Thank you for helping me.”
- “Thank you very much.”
Short Learning Section for Students
Here is an easy way to learn:
Step 1: Remember the rule
- Thank you = correct
- Thankyou = wrong
Step 2: Practice
- “Thank you for your help.”
- “Thank you so much.”
Step 3: Use memory trick
Think:
You thank someone, so you say thank + you
Step 4: Check your writing
Always keep it as two words.
FAQ
Is “thankyou” ever correct?
No, it is not correct in standard English.
Can I use “thank you” in formal writing?
Yes, it is perfectly correct.
Why do people write “thankyou”?
Because of fast typing or habit.
Is “thanks” the same as “thank you”?
“Thanks” is more casual, but both show gratitude.
Can I write “thank-you” with a hyphen?
Sometimes, when used as an adjective (like “thank-you note”), it is correct.
Which form should I use in exams?
Always use thank you.
Is this mistake common?
Yes, many learners and even native speakers make it.
Conclusion
The difference between thankyou and thank you is very simple.
- Thank you is the correct and standard form.
- Thankyou is a common mistake and should be avoided.
If you remember one rule, remember this:
Always write “thank you” as two separate words.
With this simple tip, you will never make this mistake again.

Austin Brandon serves as both an author and administrator at GrammerPeak. He manages site operations while creating clear, accurate grammar content that helps readers correct mistakes, understand language rules, and write with confidence, precision, and clarity across academic, professional, and everyday English communication.