What the AIF is and who needs it. The AIF is a structured online form required for most Waterloo undergraduate programs — especially engineering, computer science, mathematics, and financial analysis. It opens around October alongside the application and has its own deadline in late January or early February, which can be the same as or shortly after your OUAC deadline. What you're actually submitting. The AIF asks for your activities: courses and their levels, employment, extracurriculars, contest results, and positions of responsibility. For some programs there are short written responses focused on why you chose the program or what you learned from a specific experience. For top programs like Software Engineering and CS, there's also an optional AIF interview. It can change your average. This is the part students miss: a strong AIF can bump your admission average up. Waterloo adjusts a candidate's average based on AIF strength — excellent responses can mean a lower grade gets admitted over a higher grade with a weak AIF. Treat it as coursework, not paperwork. How strong answers look. Strong answers name a specific role, a concrete activity, the timeframe, and a measurable outcome — 'Secretary of the CS club in G11, where I organised two school-wide hackathons with 40 participants each' beats 'I was in the coding club.' For written responses, structure matters: what you did, why, what you learned, and what you'd do differently. Where your resume builder fits. If you've logged extracurriculars in your dashboard, the Resume Builder's AIF template pulls those same activities into the format Waterloo expects — same roles, hours, and dates you've already tracked. Keep your activity log current through the fall and filling the AIF is mostly review, not reconstruction.