If you’re applying to University or College, apply well before the deadline. So that you’re not caught when OUAC or OCAS crashes on deadline day, when almost EVERYONE is applying, back up YOUR deadline.
The equal consideration deadline for University applications, through OUAC, is January 17. The equal consideration deadline for College applications, through OCAS, is February 1.
If you submit and pay for your application over the Holiday break, you’ll be in good shape. Remember, you can change information once you have submitted your application, but it’s wise to make your last change(s) before the deadline. Changes may cost you money.