Format Reports for Fast Comprehension

A self-review guide for making spreadsheets clear, professional, and easy to act on.

Core principles

Optimize for instant comprehension. Make the takeaway visible in seconds.
Treat defaults as choices. Remove gridlines, borders, colors, and charts that do not serve a purpose.
Separate data from presentation. Keep source data organized independently from the reader-facing view.
Keep one source of truth. Derived values should reference inputs rather than being copied manually.
Separate inputs, logic, and outputs so a reader can understand what changes when an assumption moves.
Design for the next person. Clear names, frozen headers, consistent formats, and visible assumptions beat tribal knowledge.
Minimize manual steps. A good sheet should be repeatable, not a one-off document.