It’s or its?

It’s is the contracted form of it is or it has:

Can you hear that noise? Where do you think it’s (it is) coming from?

It’s (it is) nearly the end of the month. It’s (it has) gone really quickly.

Its is a possessive determiner (like my, your, his) which we use when referring to things or animals:

Every house in the street has got its own garage.

[talking about a famous American journalist]

He joined the New York Tribune (1868), becoming its editor-in-chief and eventually its principal owner (1872–1905).

We don’t use its as a possessive pronoun.

See also:

Pronouns: possessive (my, mine, your, yours, etc.)

• get on with something
• get on with sth
• get on your high horse
• get on your soapbox
• get out
• get out!
• get-out
• get-out clause
• get-out-clause
• get-out-of
• get out of
• get-out-of-bed-on-the-wrong-side
• get out of bed on the wrong side
• get out of bed the wrong side
• get out of here!
• get-out-of-here
• get-out-of-jail-free card
• get-out-of-jail-free-card
• get-out-of-mind
• get out of my face!
• get-out-of-my-face
• get out of my sight!
• get-out-of-my-sight
• get out of something
• get out of sth