Taxes on earnings?

When you guys make a sell, do you pull out a certain amount of your earnings for taxes? I am very confused about how to prepare myself tax wise in advance. I have not yet did my first deal yet, however, I don’t want to go in blind and not prepared. Can anyone suggest some educational info on this subject? Much Thanks - :smiley:

See an accountant, their is more than just what you make, it all depends on when.