Are both of these sentences correct to say:
- I can give it to you in case you may need it later.
- I can give it to you in case you may need it in future.
If so is there any difference between these two?
Although I don’t think it is exactly wrong to say “in future”, the phrase people usually use (at least in US English — not sure about other places) is, “in the future”.
Except for that, both sentences are correct. In my own opinion, they both would sound a little more idiomatic and natural if the word “may” were omitted:
I can give it to you in case you need it later.
I can give it to you in case you need it in the future.
But that is probably just a matter of personal preference.
Both sentences have very similar meanings, but the use of “in the future”, in the second sentence, implies a fairly distant future. “In the future” would probably not be used to describe tomorrow or later today. That phrase would usually indicate a time at least a few months away, and maybe even years later.
On the other hand, your first sentence, with “later”, could be used for just about any time frame.