The part your average can’t save you from
193 Ontario programs want more than marks — a form, a portfolio, an audition, a written questionnaire, a video interview. Most of them close before the January 15 OUAC deadline, and a few land in early December.
Miss one and you are out of consideration at a 98% average. It is the single most avoidable way to lose a program you were qualified for.
Deadline reminders
Supplementary applications close before the January OUAC deadline, and some land in early December. We’ll email you before the ones that apply to you.
We send your email address and the programs you’ve starred, so the reminders are the right ones. Your marks and your average are never sent — they stay in this browser. Deadline emails only, and you can reply to stop them.
Deadlines we’ve checked
Read off each university’s own page on 2026-08-15. Right now 9 of 16 have rolled over to this cycle — the rest still show last year’s date, which tells you roughly when to expect it but is not this year’s deadline. We show you which is which instead of pretending.
Ivey Advanced Entry Opportunity (AEO)
Western University · OUAC checkbox + Ivey portal + Kira Talent
A separate Ivey application: two activities written up as essays (max 500 words each) plus up to five more in point form, a named reference for every activity — "Applications without verified references will not be considered" — and a five-question Kira Talent video interview completed in one sitting. You must also click yes to Ivey AEO on your OUAC application.
confirmed for this cycleJanuary 15, 2027
https://welcome.uwo.ca/next-steps/apply/submit-forms.htmlPharmacy (including Conditional Admission to Pharmacy)
University of Waterloo · Waterloo applicant portal
Admission Information Form, on the earliest Waterloo deadline of all.
confirmed for this cycleJanuary 20, 2027
https://uwaterloo.ca/future-students/admissions/admission-information-formArchitectural Studies (BAAS) and Visual Studies (BAVS)
University of Toronto — Daniels · Join U of T applicant portal
A supplementary application from every applicant. Architectural Studies asks for three photographs of an object you made by hand plus a summary of at most 200 words; Visual Studies asks for six to eight images plus a 250–650 word statement. Missing it is fatal: "Those who do not submit a supplementary application by the posted deadlines will be automatically refused admission."
confirmed for this cycle"Final deadline for Supplementary Application: February 1st, 2027 (11:59pm, Eastern Standard Time)". A separate early deadline for international and out-of-province applicants is listed as TBA.
https://www.daniels.utoronto.ca/admissions/undergraduate/supplementary-applicationsApplying to BOTH an Engineering program and a Faculty of Mathematics program
University of Waterloo · Waterloo applicant portal + Kira Talent
The earlier Engineering deadline governs everything — the AIF, the online interview and all supplementary forms. This is the most avoidable way a strong applicant loses Engineering: they read February 15 on the Math page and miss the Engineering cutoff by two weeks.
confirmed for this cycle"If you've applied to an Engineering program AND a program(s) in the Faculty of Mathematics, you must submit the AIF, online interview, and supplementary forms by the Engineering deadline (February 1, 2027 at 11:59 p.m. Eastern Time) so that you meet the requirements for Engineering."
https://uwaterloo.ca/future-students/admissions/admission-information-formAll Engineering programs
University of Waterloo · Waterloo applicant portal + Kira Talent
Admission Information Form (AIF), plus an online video interview for Engineering applicants.
confirmed for this cycleFebruary 1, 2027
https://uwaterloo.ca/future-students/admissions/admission-information-formDon Wright Faculty of Music — all music degrees
Western University · Western audition registration
Audition and interview. Apply on OUAC first, get your Western student number, then register and pay the fee.
confirmed for this cycleFebruary 1, 2027
https://welcome.uwo.ca/next-steps/apply/submit-forms.htmlScholar's Electives and the National Scholarship Program
Western University · Western applicant portal
Separate application for Western’s enriched-study stream and its major entrance scholarship.
confirmed for this cycleFebruary 14, 2027
https://welcome.uwo.ca/next-steps/apply/submit-forms.htmlAll other AIF programs, including the Faculty of Mathematics
University of Waterloo · Waterloo applicant portal
Admission Information Form (AIF).
confirmed for this cycleFebruary 15, 2027
https://uwaterloo.ca/future-students/admissions/admission-information-formAll Western programs — general supplementary form
Western University · Western applicant portal
Western’s general supplementary form, used across programs including Kinesiology and MIT.
confirmed for this cycleMarch 1, 2027
https://welcome.uwo.ca/next-steps/apply/submit-forms.htmlBA Dramatic Arts, and BA/BEd Intermediate-Senior (Dramatic Arts)
Brock University · brocku.universitytickets.com
A mandatory in-person DART Invitational workshop, 9:30am–5pm, attended once on one of three offered dates, with pre-registration required. Every applicant must complete it to receive an offer — including anyone who already holds a conditional offer. Applicants living more than 500 km from campus may request an alternate interview.
last cycle's date"The in-person 2026 DART Invitationals will take place on January 31, March 28 and May 2, 2026." — note the page still says REGISTRATION IS NOW OPEN while showing last cycle's dates.
https://brocku.ca/miwsfpa/dramatic-arts/dart-invitational/Engineering, Computer Science, iBioMed and Bachelor of Technology
McMaster University · Kira Talent
A Kira Talent supplementary application — not CASPer. Four questions: three video responses (1 minute to prepare, 2 to answer) and one written response (10 minutes). There is a 0 fee paid through OUAC. You only complete it once even if you apply to several Faculty of Engineering programs; the invitation arrives from Kira within 10 business days of applying.
last cycle's date"Your supplementary application deadline is Thursday, January 29, 2026 at 11:59 p.m. (ET)." The page also says the application will not open until October 22, with no year attached.
https://www.eng.mcmaster.ca/supplementary-application/Arts & Science (OUAC code MX)
McMaster University · McMaster Arts & Science form (MacID login)
A mandatory two-part form. Part A is five questions with a 1,500 character limit each; Part B is an equity/facilitated-admissions section every applicant must complete. Needs a MacID, which arrives about a week after your OUAC application. McMaster states plainly that using generative AI to help write it "will be considered an infringement of academic integrity".
last cycle's date"all supplementary applications must be submitted by 1 February 2026, 11:59pm EST" — and the posted questions are headed 2026, i.e. last cycle’s.
https://artsci.mcmaster.ca/future-students/supplementary-application/Bachelor of Health Sciences (BHSc) — winter term entry
Queen's University · Kira Talent
Supplementary application for a winter start. Most other Queen’s supplementary dates are currently unpublished for this cycle.
last cycle's date"The winter term deadline to submit is October 15, 2025. Queen’s will not accept late submissions."
https://www.queensu.ca/admission/applying/supplementary-applicationComputer Science (BSc)
University of Toronto Mississauga · Join U of T applicant portal
A written supplementary response: list achievements or experiences not reflected in your transcript that show your interest and potential in computing. It opens on the Join U of T applicant site after you submit through OUAC. Note this is worded differently from the St. George Computer Science supplement — applying to both campuses means completing two.
last cycle's dateThe deadline is February 16, 2026.
https://www.utm.utoronto.ca/future-students/admissions/supplementary-applicationSchulich BBA / iBBA
York University — Schulich · OUAC, then the Schulich supplementary application
You must apply through OUAC first, and Schulich does not accept late applications. Your York student number arrives 7–10 business days afterwards and you need it to open the supplementary application — so applying on the deadline itself compresses the window you have left to complete the supplement.
last cycle's dateDirect-Entry Ontario High School Applications (Year 1): January 15, 2026
https://schulich.yorku.ca/admissions/how-to-apply-undergrad/Honours Health Sciences (BHSc)
McMaster University · McMaster BHSc portal
A mandatory supplementary application. Every row of McMaster’s timeline has been reset to "Coming Soon" for this cycle — questions, portal access and offer dates alike. Their warning is worth reading twice: "Supplementary Applications portal access is time limited. Extensions are not granted."
no date publishedComing Soon — every timeline row on McMaster’s page currently reads this.
https://hhsp.healthsci.mcmaster.ca/future-students/supplementary-application/
All 193 programs
Flagged from each program’s own published admission criteria, and sorted by how high the bar is. The sentence under each one is what triggered the flag, so you can judge it yourself.
Ontario Universities’ Info names the requirement but never the deadline or the platform — those live only on each university’s own site. Every program links through. Never take a date from us you haven’t seen on theirs.
193 programs · showing 40
- Computer Science (regular and co-op)
U of T (Scarborough)· needs 93%
No Supplementary Application Form required.
- Health Sciences
Queen's· needs 93%
A high school transcript is just 1 piece of information Queen's University uses when making an admission decision. Each applicant to Queen's has a personalized To Do List, detailing exactly what is needed to complete their application. Students can review their To Do List (and associated due dates) on their Queen's SOLUS Student Centre. Applicants to Commerce, Health Sciences, and Nursing are required to complete a Supplementary Application. Students will receive instructions for accessing SOLUS and their Supplementary Application after they apply.
- Business Administration (Laurier) and Computer Science (Waterloo) Double Degree (Co-op Only)
Waterloo· needs 90%
Admission Information Form
An Admission Information Form is required. We will send you instructions when we acknowledge your application.
- Computer Science
U of T (St. George)· needs 90%
Applicants to the Arts & Science Computer Science admission category must submit a supplemental application by the posted document deadlines. The supplemental application can be found in applicants' Join U of T account after they have applied, and will be included as one of their "to-do" items in their admission checklist.
- Computer Science (Regular/Co-op)
Waterloo· needs 90%
Admission Information Form
An Admission Information Form (AIF) is required. We will send you instructions when we acknowledge your application.
- Computing and Financial Management (Co-op Only)
Waterloo· needs 90%
Admission Information Form
An Admission Information Form (AIF) is required. We will send you instructions when we acknowledge your application.
- Honours Health Sciences
McMaster· needs 90%
Admission is by selection. You will not be considered without a completed supplementary application. The supplementary application is due in early/mid-February. Applicants will be notified of the details.
- Integrated Biomedical Engineering & Health Sciences I- Chemical & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Civil & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Discovery Track
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Electrical & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Engineering Physics & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Health Engineering Science & Entrepreneurship
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Materials Science & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Mechanical & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Mechatronics & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Integrated Biomedical Engineering & Health Sciences I- Software & Biomedical Engineering
McMaster· needs 90%
supplementary application
- Software Engineering (Co-op Only)
Waterloo· needs 90%
InterviewVideo submissionAdmission Information Form
NEW: All Engineering program applications require an online video interview. You will receive more information after you apply.
- Integrated Business & Humanities I
McMaster· needs 88%
Mandatory supplementary application, due February 1, 2027. Details will be supplied to applicants. Admission is by selection.
- Biomedical Engineering (Co-op Only)
Waterloo· needs 87%
InterviewVideo submissionAdmission Information Form
NEW: All Engineering program applications require an online video interview. You will receive more information after you apply.
- Business Administration (BBA)
York· needs 87%
InterviewVideo submission
A Supplementary Application (including leadership profile, video interview and timed writing exercise) is required and due
- Commerce
Queen's· needs 87%
A high school transcript is just 1 piece of information Queen's University uses when making an admission decision. Each applicant to Queen's has a personalized To Do List, detailing exactly what is needed to complete their application. Students can review their To Do List (and associated due dates) on their Queen's SOLUS Student Centre. Applicants to Commerce, Health Sciences, and Nursing are required to complete a Supplementary Application. Students will receive instructions for accessing SOLUS and their Supplementary Application after they apply.
- Computer Engineering (Co-op Only)
Waterloo· needs 87%
InterviewVideo submissionAdmission Information Form
NEW: All Engineering program applications require an online video interview. You will receive more information after you apply.
- Double Degree: Management & Finance (BBA) and Statistics – Quantitative Finance (BSc) (regular and co-op)
U of T (Scarborough)· needs 87%
Supplementary Application Form (SAF)
- Electrical Engineering (Co-op Only)
Waterloo· needs 87%
InterviewVideo submissionAdmission Information Form
NEW: All Engineering program applications require an online video interview. You will receive more information after you apply.
- Engineering
Western· needs 87%
Test or assessment
Prospective students applying to Engineering need to complete a mandatory supplemental application.
The OUAC calendar is here, and your plan flags which of your starred programs need one of these.