After reviewing hundreds of financial models from analysts at banks, PE firms, and corporate finance teams, the same three mistakes keep showing up:

1. Hardcoding assumptions into formulas. Your revenue growth rate should never live inside a SUMPRODUCT. The moment someone audits your model and can't trace an assumption, your credibility takes a hit. Separate inputs from calculations. Always.

2. Circular references in interest calculations. Most analysts either ignore the circularity or build a hack that breaks under stress testing. There's a clean iterative approach that handles this properly — and it takes 10 minutes to implement once you know it.

3. Ignoring operating model granularity. "Revenue grows at 8%" is not a model. It's a guess with a spreadsheet wrapped around it. The best models build revenue bottom-up: units × price × mix × seasonality. That's what gets you promoted.

I built Finaxil to help corporate finance professionals fix exactly these gaps. AI-powered tutoring that adapts to where you actually are — not where a generic course assumes you should be.

If you're serious about leveling up your modeling skills, come check it out.