The main difference between hasn’t and haven’t is subject-verb agreement.
Hasn’t is the shortened form of has not.
Haven’t is the shortened form of have not.
Compare these sentences:
- John hasn’t arrived yet.
- John and Sarah haven’t arrived yet.
“John” is one person, so we use hasn’t. “John and Sarah” refers to more than one person, so we use haven’t.
Here is a simple guide:
| Subject | Correct Form | Example |
|---|---|---|
| I | haven’t | I haven’t eaten yet. |
| You | haven’t | You haven’t called me. |
| He | hasn’t | He hasn’t replied. |
| She | hasn’t | She hasn’t arrived. |
| It | hasn’t | It hasn’t stopped raining. |
| We | haven’t | We haven’t decided. |
| They | haven’t | They haven’t finished. |
| Singular noun | hasn’t | The teacher hasn’t arrived. |
| Plural noun | haven’t | The teachers haven’t arrived. |
What Does Hasn’t Mean?
Hasn’t is a contraction of has not.
It is usually used with:
- He
- She
- It
- A singular person, animal, place, or thing
For example:
- He hasn’t answered my message.
- She hasn’t seen that movie.
- It hasn’t worked properly today.
- My brother hasn’t finished school yet.
- The package hasn’t arrived.
You could write these sentences using has not, but hasn’t sounds more natural in everyday conversation.
For example:
“She has not called.”
and
“She hasn’t called.”
Both are grammatically correct. The second sounds more conversational.
What Does Haven’t Mean?
Haven’t is the contraction of have not.
It is normally used with:
- I
- You
- We
- They
- Plural nouns
Examples include:
- I haven’t eaten breakfast.
- You haven’t answered my question.
- We haven’t made a decision.
- They haven’t returned home.
- My parents haven’t met him.
- The students haven’t completed the test.
Again, haven’t and have not have the same basic meaning.
“We have not decided.”
and
“We haven’t decided.”
Both are correct.
The Simple Grammar Rule for Hasn’t and Haven’t
A useful rule is to first look at the subject.
Use this pattern:
He / She / It + hasn’t
I / You / We / They + haven’t
This follows the same rule used with has and have.
For example:
- She has finished.
- She hasn’t finished.
But:
- They have finished.
- They haven’t finished.
If you already know whether you would use has or have, choosing between hasn’t or haven’t becomes much easier.
Using Hasn’t and Haven’t in the Present Perfect
One of the most common places to see hasn’t and haven’t is the present perfect tense.
The basic structure is:
Subject + has/have + past participle
In a negative sentence:
Subject + hasn’t/haven’t + past participle
Examples:
- Emma hasn’t completed the report.
- We haven’t completed the report.
- He hasn’t visited London before.
- I haven’t visited London before.
- The bus hasn’t arrived yet.
- The buses haven’t arrived yet.
Notice that the main verb remains in its past participle form. Only hasn’t or haven’t changes according to the subject.
Hasn’t or Haven’t With Singular Nouns
Use hasn’t when the subject is a singular third-person noun.
For example:
- The child hasn’t eaten lunch.
- My friend hasn’t replied.
- Sarah hasn’t arrived.
- The computer hasn’t restarted.
Each subject refers to one person or thing.
A helpful test is to replace the noun with he, she, or it.
“The computer” becomes “it.”
“It hasn’t restarted.”
That tells you hasn’t is correct.
Hasn’t or Haven’t With Plural Nouns
Use haven’t with plural subjects.
For example:
- The children haven’t eaten lunch.
- My friends haven’t replied.
- Sarah and Tom haven’t arrived.
- The computers haven’t restarted.
A plural subject can usually be replaced with they.
“My friends” becomes “they.”
“They haven’t replied.”
This makes the correct choice easier to see.
Why Do We Say “I Haven’t” Instead of “I Hasn’t”?
A common question is why I takes haven’t even though it refers to one person.
English verb agreement does not depend only on whether something is singular or plural. Different pronouns follow different grammatical patterns.
We say:
- I have
- You have
- He has
- She has
- It has
- We have
- They have
The same rule applies to the negative contractions.
Therefore:
✅ I haven’t finished.
❌ I hasn’t finished.
Although “I” represents one person, standard English uses have with I.
Why Do We Say “You Haven’t”?
The pronoun you always takes have, whether it refers to one person or several people.
For example:
Talking to one person:
“You haven’t sent the email.”
Talking to several people:
“You haven’t sent your forms.”
We do not normally say you hasn’t in standard English.
Hasn’t or Haven’t With Names
Whether you use hasn’t or haven’t with names depends on how many people the subject represents.
One person:
- Daniel hasn’t called.
- Maria hasn’t finished her work.
Two or more people:
- Daniel and Maria haven’t called.
- Tom and his brother haven’t arrived.
When two names are joined by and, the subject is normally plural, so haven’t is used.
Hasn’t or Haven’t With Everyone, Someone, and Nobody
Words such as everyone, everybody, someone, somebody, anyone, anybody, nobody, and no one are grammatically singular in standard English.
For that reason, use hasn’t.
Examples:
- Everyone hasn’t responded yet.
- Someone hasn’t completed the form.
- Nobody hasn’t spoken to me.
However, be careful with meaning. Sentences such as “Nobody hasn’t spoken to me” contain two negatives and may not express what you intend.
Often, a clearer sentence would be:
- Nobody has spoken to me.
- Someone hasn’t responded.
The important grammar point is that these indefinite pronouns normally take has, not have.
Hasn’t or Haven’t With Collective Nouns
Collective nouns such as team, family, company, group, and committee can sometimes cause confusion.
In American English, these nouns are often treated as singular when the group acts as one unit:
- The team hasn’t announced its decision.
- The company hasn’t released the results.
British English sometimes treats collective nouns as plural when focusing on the individual members:
- The team haven’t agreed on their positions.
Both patterns may appear depending on dialect and intended meaning. For general American English, treating a single collective noun as singular is usually the safest choice.
Hasn’t vs Haven’t in Questions
Although hasn’t and haven’t often appear in statements, they can also begin questions.
Examples with hasn’t:
- Hasn’t she arrived yet?
- Hasn’t he called you?
- Hasn’t the store opened?
Examples with haven’t:
- Haven’t you finished?
- Haven’t they answered?
- Haven’t we met before?
The subject rule remains the same.
Use hasn’t with he, she, it, and singular third-person nouns. Use haven’t with I, you, we, they, and plural nouns.
Hasn’t and Haven’t in Formal and Informal English
Both contractions are completely normal in spoken and written English.
You will often see hasn’t and haven’t in:
- Conversations
- Text messages
- Social media posts
- Personal emails
- Blog posts
- Everyday workplace communication
In highly formal writing, writers sometimes prefer the full forms has not and have not.
Informal:
“The manager hasn’t approved the request.”
More formal:
“The manager has not approved the request.”
The meaning does not change. The full form simply creates a slightly more formal tone.
Common Mistakes With Hasn’t and Haven’t
One of the most common mistakes is using the contraction that does not agree with the subject.
❌ She haven’t finished her assignment.
✅ She hasn’t finished her assignment.
“She” takes has, so its negative contraction is hasn’t.
❌ They hasn’t received the email.
✅ They haven’t received the email.
“They” takes have, so haven’t is correct.
❌ My brother haven’t arrived.
✅ My brother hasn’t arrived.
“My brother” is one person and can be replaced by “he.”
❌ The students hasn’t completed the project.
✅ The students haven’t completed the project.
“Students” is plural, so it takes haven’t.
❌ I hasn’t seen him today.
✅ I haven’t seen him today.
The pronoun “I” always uses have, not has, in this structure.
❌ You hasn’t told me the truth.
✅ You haven’t told me the truth.
“You” uses have whether it refers to one person or several people.
A Quick Trick to Remember Hasn’t vs Haven’t
Remove the word not mentally and ask yourself whether the positive sentence needs has or have.
For example:
“She ___ completed her work.”
You would say:
“She has completed her work.”
Therefore, the negative form is:
“She hasn’t completed her work.”
Now try:
“They ___ completed their work.”
The positive form is:
“They have completed their work.”
So the negative form is:
“They haven’t completed their work.”
This simple test works in most everyday situations.
Hasn’t or Haven’t: Quick Comparison
| Form | Full Form | Used With | Example |
| Hasn’t | Has not | He, she, it, singular nouns | She hasn’t arrived. |
| Haven’t | Have not | I, you, we, they, plural nouns | They haven’t arrived. |
Remember this short pattern:
He, she, it = hasn’t
I, you, we, they = haven’t
Once that pattern becomes familiar, the choice usually feels automatic.
Practice Questions
Choose hasn’t or haven’t to complete each sentence.
- She _____ finished her homework.
- We _____ seen that movie before.
- My father _____ returned from work yet.
- They _____ answered the email.
- I _____ eaten anything today.
- The dog _____ touched its food.
- You _____ told me your name.
- Sarah and Anna _____ arrived yet.
- The teacher _____ checked our papers.
- My friends _____ visited this city before.
Answers
- hasn’t — “She” uses has.
- haven’t — “We” uses have.
- hasn’t — “My father” is singular.
- haven’t — “They” is plural.
- haven’t — “I” uses have.
- hasn’t — “The dog” is a singular subject.
- haven’t — “You” uses have.
- haven’t — Sarah and Anna form a plural subject.
- hasn’t — “The teacher” is singular.
- haven’t — “Friends” is plural.
MUST READ: matter of fact or fact of the matter
Conclusion
Both hasn’t and haven’t are correct, but the subject determines which one you should use. Hasn’t means has not and goes with he, she, it, and most singular third-person subjects. Haven’t means have not and goes with I, you, we, they, and plural subjects.
A simple memory trick is to think about the positive form first. If you would use has, choose hasn’t. If you would use have, choose haven’t.
With a little practice, sentences such as “She hasn’t called” and “They haven’t called” become easy to form correctly.
Stay Connected
Enjoy simple grammar, spelling, and English meaning guides? Follow us on Facebook, X, Instagram, Pinterest, TikTok, and YouTube for more practical English-learning tips.
Frequently Asked Questions
Is it “she hasn’t” or “she haven’t”?
She hasn’t is correct in standard English. “She” uses has, so the negative contraction is hasn’t.
Correct: “She hasn’t replied.”
Incorrect: “She haven’t replied.”
Is it “I haven’t” or “I hasn’t”?
I haven’t is correct. The pronoun I uses have, even though it refers to one person.
Example: “I haven’t finished my lunch.”
Is it “he hasn’t” or “he haven’t”?
Use he hasn’t.
Example: “He hasn’t called me today.”
The pronoun he requires has, not have.
Is it “they hasn’t” or “they haven’t”?
They haven’t is correct because they takes have.
Example: “They haven’t received the package.”
Is it “you hasn’t” or “you haven’t”?
Always use you haven’t in standard English.
Example: “You haven’t answered my question.”
This rule applies whether “you” refers to one person or several people.
Can hasn’t and haven’t be used in formal writing?
Yes. Both are grammatically correct contractions and can appear in many types of professional writing. However, very formal documents may use has not and have not instead.
What tense uses hasn’t and haven’t?
They commonly appear in the present perfect tense, followed by a past participle.
Examples:
“She hasn’t finished.”
“They haven’t finished.”
They can also be used where has and have function as main verbs in some varieties and constructions.
