Five signs your spreadsheets have become a liability

There is nothing wrong with running a business on spreadsheets. They are flexible, everyone understands them, and they cost nothing. Most companies should start there. The problem is that the transition from 'working fine' to 'actively losing us money' happens gradually and then all at once.

1. Somebody is the human database

There is one person who knows which file is current and what the colour coding means. When they are on leave, work slows down. That is not a staffing problem, it is a systems problem, and it is the most common one we are called in to fix.

2. The same data is entered more than once

A customer's details are typed into the enquiry sheet, then the invoice, then the delivery log. Every duplicate entry is a chance to introduce an inconsistency, and once two sheets disagree, nobody can tell which one is right.

3. Reporting takes a day

If answering 'how did last month go?' requires an afternoon of copying between tabs, you are not reporting, you are reconstructing. The cost is not just the afternoon — it is that nobody asks the question as often as they should.

4. Deadlines are missed because nothing surfaced them

Renewals, follow-ups and approvals get missed because a spreadsheet cannot raise its hand. It waits to be opened. Any process where the cost of forgetting is high wants a system that pushes rather than one that sits.

5. You have stopped trusting the numbers

This is the decisive one. When people start double-checking the sheet before acting on it, the sheet has stopped being a source of truth and become a rumour. At that point it is costing you more in verification time than a system would cost to build.

The right moment to replace a spreadsheet is when the cost of the workarounds exceeds the cost of the system.

You do not have to replace everything at once. The usual path is to identify the single process causing the most pain, build a system for that, and leave the rest alone until it earns its own replacement.