From Excel Chaos to a Reporting Model That Holds Up

The typical reporting stack in an Indian mid-market company is a folder of workbooks, one heroic analyst, and a monthly ritual of copy-paste. Dashboards get bolted on top and inherit every flaw underneath.

Sequence the transition instead. Start with Power Query to standardise how raw data is pulled and shaped. Once refresh is reliable, build a small star schema: clean fact tables, proper dimensions, one date table. Only then design visuals.

The discipline pays off in maintenance. When a source column changes, you fix one query rather than eleven workbooks. When leadership asks a new question, you add a measure rather than rebuilding the report.

A good test: can someone other than the original author refresh the report end to end without asking a question? If not, the model is not finished.