1.Tiered Commission and Boundary Logic Modeling
step chart and data table · 2026
A financial modeler needed to resolve boundary errors in a tiered commission structure. The dashboard visualizes a step function mapping revenue values ($0 to $4,000) to commission tiers (40% to 60%). Color-coded bands denote the 40% tier (below $1,000), 50% tier ($1,000 to $3,000), and 60% tier (above $3,000). Red diamond markers highlight critical boundary points at exactly $1,000 and $3,000. A sample points table lists test values like $999 and $3,001 to ensure no gaps exist. This visual verification eliminated silent errors that often occur when users are learning how to do percentage in excel or relying on a flawed subtotal function in excel.
What it shows:
Explicitly testing edge cases in tiered financial models prevents silent calculation gaps.




