Use it’s (with an apostrophe) only when you mean “it is” or “it has.” Use its (no apostrophe) to show that something belongs to “it.” The quickest check: read the sentence aloud and expand the word to “it is.” If it still makes sense, it’s is correct. If it sounds wrong, you need the possessive its.
These two words sound identical, which is why even careful writers slip. But they do completely different jobs:
That is the whole rule. Everything else is just applying it.
You never have to guess. Whenever you’re unsure, mentally replace the word with “it is” (or “it has”):
If “it is” or “it has” fits, write it’s. If it doesn’t, write its. This single test resolves virtually every case you’ll ever meet.
Here’s the trap. In English we normally build possessives by adding apostrophe + s: the dog’s bowl, Maria’s phone, the company’s profits. So your instinct screams that “belonging to it” should be spelled it’s, with an apostrophe. That instinct is wrong.
It is a pronoun, and possessive pronouns never take an apostrophe. Look at the whole family: my/mine, your/yours, his, her/hers, its, our/ours, their/theirs, whose. Not one of them has an apostrophe. Its simply follows his and hers. Once you group it with those words instead of with dog’s and Maria’s, the apostrophe-free spelling stops looking strange.
It’s is a valid shortening of it has only when has is a helper verb (as in the perfect tense): “It’s rained all week” (it has rained), “It’s got four seats” (it has got). When has is the main verb meaning “possesses,” you cannot contract it. “It has three legs” never becomes “It’s three legs.” Say it in full and the mistake is obvious.
Some writers, hunting for the possessive, land on its’ — apostrophe after the s. There is no such word in English. The possessive is always its, with no apostrophe anywhere. If you’ve written its’, it’s wrong every single time.
Its/it’s has a twin pair that follows exactly the same logic: whose is possessive (“Whose coat is this?”) and who’s means “who is” or “who has” (“Who’s coming?”). Master one pair and you’ve mastered both.
Because it’s is a contraction, some formal and academic styles prefer the full it is / it has. That’s a stylistic choice, not a grammar rule — it’s is perfectly correct in almost all writing. The possessive its, by contrast, is never optional: there’s no longer form to fall back on.
Remember: the apostrophe replaces a missing letter — here it never signals ownership. If nothing is missing from the word, nothing gets an apostrophe. Or keep it even simpler and file its next to his: “his tail, its tail.” Neither one wants an apostrophe.
None. This is one of the rare spelling-and-usage points where American and British English agree completely: it’s is the contraction, its is the possessive, on both sides of the Atlantic. Style guides from Chicago to Oxford give the same instruction, so you can apply the apostrophe test with total confidence wherever you’re writing.
One historical footnote explains why the confusion runs so deep: for much of the 1600s, writers actually did spell the possessive it’s, apostrophe and all. The apostrophe-free its only settled in as the fixed standard later — so the “wrong” version is really just a spelling the language abandoned centuries ago.
Use the apostrophe test. Replace the word with “it is” or “it has” and read the sentence aloud. If it still makes sense, write it’s. If it turns to nonsense, the word is showing possession, so write its with no apostrophe. That single check settles almost every case you will meet.
No. It’s, with an apostrophe, only ever means “it is” or “it has” — it is never possessive. To show that something belongs to “it,” you must use its with no apostrophe, exactly like his or hers. If you mean ownership, drop the apostrophe every single time.
It’s is a contraction of either “it is” or “it has.” The apostrophe marks the missing letters: “it is” becomes “it’s,” and “it has” becomes “it’s” too (as in “it’s been raining”). Context tells you which one is meant. It never stands in for anything possessive.
Because its is a possessive pronoun, and possessive pronouns never take apostrophes — think his, hers, ours, yours, theirs and whose. Only nouns form possessives with apostrophe + s (the cat’s paw). Since it is a pronoun, its follows the pronoun pattern and stays apostrophe-free.
No. Its’ with an apostrophe after the s does not exist in English — it is always an error. The possessive is its (the dog and its owner), and the contraction is it’s (it is/it has). Those two are the only valid forms; anything with an apostrophe after the s is wrong.
