Grammar 101: Its vs. It’s
When you’re in a hurry, you might write “it’s” when you really mean “its,” or the other way around. You need to be aware of this mistake and know when to use which.
It’s is a contraction of “it is” or “it has.” Its is a possessive determiner we use to say that something belongs to or refers to something.

Examples
Incorrect: He doesn’t think its a good idea to spend all his money on video games.
Correct: He doesn’t think it’s a good idea to spend all his money on video games.
Incorrect: Its been a year since the last time they met.
Correct: It’s been a year since the last time they met.
Incorrect: The computer looked as though it’s power supply had failed.
Correct: The computer looked as though its power supply had failed.
Incorrect: A car is no good without it’s wheels.
Correct: A car is no good without its wheels.