The honest test is arithmetic, not enthusiasm. Take the minutes the task takes, multiply by how often it runs in a year, multiply by the number of people who do it, and convert to cost at a loaded hourly rate.
A 20-minute report produced every week costs roughly 17 hours a year. Put your own loaded hourly rate against that and you have the annual cost of doing it by hand; compare it to the quote and the payback period is arithmetic. The same report produced quarterly costs 80 minutes a year — automating it would take a decade to pay back, and we will tell you not to.
Two effects the arithmetic misses, both in favour of automating: the error rate on manual consolidation is not zero, and a wrong number that reaches a decision costs far more than the time saved. And the person doing the retyping is usually the person who could have been analysing the result instead.
The signals that you have crossed the line
- Someone has a written checklist for producing a file.
- The process is documented as "ask Marie, she knows".
- A step exists only to fix what the previous step got wrong.
- The report is late whenever one specific person is away.
- Two teams maintain the same numbers in two places.