Don't Get Bogged Down in Formulas | Drawing the Line Between Spreadsheets and Dedicated Tools: When an Amazing Spreadsheet is a Sign of Reaching Its Limit

"This spreadsheet has formulas that are too complex for anyone to touch anymore."
"Only the person who created it can maintain it."
A state where spreadsheet formulas are "too amazing" is not proof of convenience.It is a sign that you are reaching the limit and should move to a tool.When VLOOKUP is intertwined with IMPORTRANGE and multiple IF statements across dozens of lines, and even the creator doesn't know "where to fix it"—that is the time to move on.
However, that doesn't mean you should move everything to a tool. In this article, I will share the criteria for deciding how far to go with spreadsheets and where to transition to tools (databases or specialized services).

Risks of getting bogged down in formulas

• Only the creator can maintain it (dependency on specific individuals)

• The more complex the formulas become, the harder it is to trace the cause of errors

• As data increases, it becomes heavy and performance becomes unstable

• No one can touch it because they are "afraid of breaking it," so improvements stop

Formulas are convenient, but they turn into a risk when you "get bogged down" in them. The more a company relies on "people who can make amazing spreadsheets," the greater the damage when those people leave.

What spreadsheets are good for

• Temporary calculations and estimates

• Management for a small number of people or a small volume of data

• Things where the format changes frequently

• Things in the "let's try it out" verification stage

In other words, they are suited for tasks that require flexible, on-the-fly adjustments. In this regard, spreadsheets are still the best tool available.

What you should move to a tool

• Data used by many people simultaneously

• Data with a large volume of entries that requires frequent searching and filtering

• Things where you want to standardize input rules

• Things you want to manage history and permissions for

These are better handled by databases or dedicated services. Just because you "can somehow reproduce it with functions" doesn't mean you should. Spreadsheets that are forced to replicate such functionality are the most fragile.

Criteria for drawing the line

When in doubt, use the following questions to decide.

1. Will multiple people be accessing it simultaneously? → If yes, it's suited for a tool

2. Will the number of entries continue to grow? → If yes, it's suited for a tool

3. Do you want to standardize input rules? → If yes, it's suited for a tool

4. Can someone other than the creator maintain it? → If no, it's suited for a tool

If two or more are "yes," it's a sign to consider migrating. Conversely, if all are "no," there's no need to force a migration; keep it as a spreadsheet. Moving to a tool just because it's trendy creates unnecessary migration costs.

How to proceed with migration

1. Identify the "function-heavy parts" of your current sheet

2. Determine if it's suited for a tool using the four questions above

3. Start small by migrating items suited for tools (don't do it all at once)

4. Return the spreadsheet to its role of "temporary calculations"

A real-life story

A customer management sheet at one company had dozens of intertwined cross-sheet references and conditional branches, causing it to freeze for several seconds every time it was opened. The creator said, "It's fine as long as I'm here," but that in itself is a risk.
Applying the four questions, "multiple people," "increasing entries," and "standardizing rules" were all "yes." It was clearly suited for a database. So, we moved only the customer data to a database and returned the spreadsheet to just "this month's estimates." As a result, performance improved, and people other than the creator could input and search data.Simply drawing the line on "how much to handle with functions" can resolve dependency on specific individuals.

Summary

• A spreadsheet with overly complex functions is a sign of reaching its limit

• Spreadsheets are suitable for "temporary and flexible tasks"

• Tools are better for multiple users, large volumes of data, standardized rules, and history management

• Draw the line using four questions

• If the answer to all of them is "no," don't force a migration

→ Read other articles: I am sharing practical know-how on spreadsheet and back-office automation. Follow me to receive update notifications.

#Spreadsheet #MoveBeyondExcel #BusinessTools #OperationalEfficiency #SME_DX #BackOfficeReform #Systematization