till vs until (If you want till/untill tomorrow it will be too late)

[Ganesh]

If you want till tomorrow it will be too late

If you want until tomorrow it will be too late

when you have to use till and until please?

[Milanya]

Same difference.
You can use either one in this context.

Till has some other unrelated meanings, though; but they do not fit in this context.
_________________
con·text - The part of a text or statement that surrounds a particular word or passage and determines its meaning.

[Kitosdad]

You can't want till tomorrow .... You can wait.!!!
_________________
Keep it simple ... Keep it interesting.