Quick answer: “hasn’t” is the contraction of “has not,” used with he, she, it, and singular nouns, while “haven’t” is the contraction of “have not,” used with I, you, we, they, and plural nouns. Both are negative forms of the present perfect tense, and the choice comes down to one thing: subject-verb agreement.
Get the subject right, and the rest follows automatically. Here’s how to keep it straight for good.
The Short Answer
- Hasn’t = has not → he hasn’t, she hasn’t, it hasn’t, the dog hasn’t, Maria hasn’t
- Haven’t = have not → I haven’t, you haven’t, we haven’t, they haven’t, the kids haven’t
The rule mirrors the difference between “has” and “have” in positive sentences. If you’d say “she has finished,” the negative is “she hasn’t finished.” If you’d say “they have finished,” the negative is “they haven’t finished.”
Why People Mix Them Up
The confusion usually comes from speed, not ignorance. In fast conversation, “hasn’t” and “haven’t” sound almost identical, and writers sometimes default to whichever one feels more natural rather than checking the subject. Collective nouns cause extra trouble — words like “team,” “family,” or “everyone” feel plural in meaning but are grammatically singular, so they take “hasn’t,” not “haven’t.”
The Collective Noun Trap
- “The team hasn’t decided yet.” (team is treated as one unit)
- “Everyone hasn’t arrived.” (everyone is singular)
- “None of the students has finished” is technically correct, though “haven’t” is common informally when “none” is read as plural.
Which to Use When: A Quick Table
| Subject | Correct Contraction | Example |
|---|---|---|
| I | haven’t | I haven’t seen that movie. |
| You | haven’t | You haven’t called me back. |
| He / She / It | hasn’t | She hasn’t replied yet. |
| We | haven’t | We haven’t decided on a date. |
| They | haven’t | They haven’t paid the invoice. |
| Singular noun | hasn’t | The printer hasn’t worked all week. |
| Plural noun | haven’t | The printers haven’t worked all week. |
Examples in a Sentence
- My brother hasn’t texted me since Tuesday.
- My parents haven’t texted me since Tuesday.
- This laptop hasn’t updated in months.
- These laptops haven’t updated in months.
- I haven’t tried that restaurant yet.
- The company hasn’t announced its earnings.
A Fast Trick to Remember It
Swap in “he” or “she” mentally. If the sentence still sounds right with “he” or “she” as the subject, use “hasn’t.” If it only works with “I,” “you,” “we,” or “they,” use “haven’t.” You can also test it by removing the contraction entirely — say the sentence out loud with “has not” or “have not” and see which one your ear accepts. Native speakers rarely get this wrong when they slow down; the mistake almost always comes from typing fast and not proofreading.
Key Takeaways
- Hasn’t pairs with he, she, it, and singular nouns.
- Haven’t pairs with I, you, we, they, and plural nouns.
- Collective nouns like “team” or “everyone” usually take “hasn’t.”
- Test your sentence with the full “has not” or “have not” if you’re unsure.
- Both are standard, correct contractions in everyday and professional writing.
Frequently Asked Questions
Is it “she haven’t” or “she hasn’t”?
It’s “she hasn’t.” “She” is a third-person singular subject, so it pairs with “has not,” not “have not.”
Is it “I hasn’t” or “I haven’t”?
“I haven’t” is correct. “I” always pairs with “have,” never “has,” even in the negative form.
What about “they hasn’t”?
That’s incorrect. “They” is plural, so the correct form is “they haven’t.”
Do “hasn’t” and “haven’t” mean the same thing?
Yes, both express a negative present perfect action — something that has not happened. The only difference is which subject each one agrees with.
Which one do I use with “everyone” or “nobody”?
Use “hasn’t.” Words like “everyone,” “nobody,” “someone,” and “anyone” are grammatically singular, even though they refer to groups of people.
Can I use “has not” and “have not” instead of the contractions?
Yes, the full forms are always correct and are preferred in very formal writing. The contractions are standard in everyday speech and most professional writing.
Once you lock in the subject-verb pairing, “haven’t” and “hasn’t” stop being a guessing game. If mixed-up word pairs like this trip you up often, it’s worth browsing a few more comparisons on the site — the patterns repeat more than you’d expect.
