Confused between OUAC 101 and OUAC 105? Learn the key differences, eligibility rules, deadlines, and common mistakes students make. A must-read guide for domestic and international applicants to Ontario universities in 2026.
If you’re planning to apply to Ontario universities for Fall 2026 admission, your first step will be through the Ontario Universities’ Application Centre (OUAC). But here’s the catch: OUAC has different application types, and picking the wrong one is one of the biggest mistakes students, parents, and counselors make.
In this article, we’ll break down the differences between OUAC 101 and OUAC 105, explain who should use which, and highlight the common mistakes students often make.
(Looking for a complete guide? Don’t miss our Step-by-Step OUAC Application Guide where we walk you through the entire submission process with tips and visuals.)
What is OUAC 101?
The OUAC 101 application is designed specifically for Ontario high school students who are:
- Currently enrolled full-time in an Ontario high school.
- Completing the Ontario Secondary School Diploma (OSSD) during the current academic year.
- Under 21 years of age as of December 31 of the application year.
- Taking a minimum of six 4U/M courses required for admission.
Key Features of OUAC 101:
Your grades are automatically sent from your high school to OUAC.
You must meet the equal consideration deadline of January 15, 2026 for Fall 2026 admission.
se fee: $156 (covers your first 3 program choices).
Additional choices: $50 per program beyond the first 3.
What is OUAC 105?
The OUAC 105 application is for all other applicants who do not meet the 101 criteria or are outside of ontario. This includes:
- International students studying outside Ontario.
- Canadian students studying in another province or abroad.
- Mature applicants (over 21).
- Part-time Ontario high school students.
Key Features of OUAC 105:
- Deadlines vary by university and program; there is no universal “equal consideration” date.
- Applicants must usually submit transcripts manually or via recognized transcript services.
- International service fee: $10 (in addition to the base fee).
OUAC 101 vs OUAC 105: Quick Comparison
| Feature | QUAC 101 | QUAC 105 |
|---|---|---|
| Eligibility | Ontario HS students completing OSSD, full-time, under 21 | All others: international, transfer, mature, non-Ontario |
| Grades | Sent automatically by HS | Submitted manually or via services |
| Deadlines | Jan 15, 2026 equal consideration | Varies by program/university |
| Fees | $156 for 3 choices + $50 each extra | Same + $10 international fee |
Common Mistakes Students Make
Using OUAC 101 from outside Ontario
- Only Ontario high school students are eligible. If you’re at a private or international school → you must use 105.
Age Confusion
- Students 21 or older by December 31 must use 105, even if enrolled in an Ontario high school.
Transfer Students Choosing 101
- If you’ve completed postsecondary studies (college/university), you should apply through 105.
International Students in Ontario Misunderstanding
- If you’re studying at an Ontario high school and completing the OSSD, you can use 101 even if you’re international. Otherwise → 105.
Ignoring Deadlines
101: strict January 15 equal consideration deadline
105: deadlines vary – missing one could cost you an admission spot.
Why Choosing the Right OUAC Form Matters
Picking the wrong form can:
- Delay your application.
- Lead to missed deadlines.
- Cause additional fees or processing issues.
OUAC 101 is for current Ontario high school students completing their OSSD.
OUAC 105 is for everyone else – international, transfer, mature, and non-Ontario applicants.
Final Tips for Applicants
- Double-check eligibility on the OUAC “Which Application” tool before applying.
- Start early to avoid tech or document delays
- Keep an eye on university-specific requirements, especially for competitive programs (Engineering, Business, Health).
(Next read: OUAC Fees 2026 + Hidden Costs You Should Know – don’t get surprised by program and transcript fees!)
Need expert help with your application?
At Study Junction, we offer:
- Step-by-step OUAC application walkthroughs.
- Admission consultations to maximize your chances.
- Free and paid resources, including checklists and eBooks.
👉 Follow us on Instagram @studyjunction2024 for daily OUAC and admissions tips!
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