Most small businesses in the Houston area run on at least one spreadsheet that everybody depends on and nobody fully trusts. It might be the job-costing workbook at a contractor in Pasadena, the inventory list at a marine supply shop in Kemah, or the monthly sales tracker at a family-owned distributor. Somebody asks a simple question, like "Which customers bought less this quarter?", and the answer takes an afternoon and still comes with an asterisk.

Excel and the AI features appearing across Microsoft 365 can make it much faster to ask questions of your data. But speed only helps if the answer is right. In our experience, the difference between a trustworthy answer and a confident wrong one almost always comes down to how the data is set up and checked, not which button you press.

Bad answers usually start with messy data

Whether you're building a formula yourself or asking an AI assistant to do the work, the tool can only read what's actually in the cells. Common problems that quietly break results:

  • Merged cells and decorative layouts that look nice printed but confuse sorting and filtering.
  • Totals typed in by hand instead of calculated, so they stop matching when a row changes.
  • Text hiding in number columns, like "N/A," "TBD" or a dollar amount with a note tacked on.
  • Dates entered three different ways, so some are treated as dates and others as plain text.
  • Multiple copies of the same file floating around in email, each with slightly different numbers.

A person can often see past these problems. Software, including AI, usually can't. It will happily give you an answer based on whatever it finds.

Set up your workbook so it can be read

A little cleanup up front pays off every time someone asks a question later. Here's a checklist to work through on your most important spreadsheet:

  • Format your data as a Table (Insert, then Table). Tables grow automatically as you add rows, keep formulas consistent, and are what AI features in Excel work with best.
  • One header row, one topic per column. Customer in one column, date in another, amount in a third.
  • One fact per cell. Put notes in their own column instead of inside a number.
  • Keep raw data separate from reports. Leave the data tab plain and build summaries, charts and PivotTables on other tabs.
  • Add a short "read me" tab explaining what each column means and where the data comes from.
  • Store one master copy in OneDrive or SharePoint and share a link instead of emailing attachments.

That last point matters more than it sounds. When everyone works from the same file, the question "which version is right?" disappears.

Ask clear questions and check the work

Once your data is tidy, you can ask more of it, whether that's with a PivotTable, a formula or an AI assistant. A few habits keep the answers honest:

  • Be specific. "Total sales by customer for July through September, highest first" beats "How are sales?"
  • Ask to see the method. If an AI assistant produces a number, ask what formula or filter it used, and look at it.
  • Spot-check a few rows. Pick two or three records and confirm they were counted the way you expected.
  • Cross-check one total against something you already know, like your accounting system or bank statement.
  • Watch for missing rows. Filters left on and blank cells are the most common reasons a total comes up short.

Treat any AI-generated figure the way you'd treat numbers from a new employee: probably right, worth verifying before it goes to your banker, your CPA or a customer.

Protect the file your business runs on

A spreadsheet that drives payroll, pricing or inventory is a business asset, and it deserves the same care as any other. Keep it in the cloud with version history turned on so you can roll back a bad edit. Limit who can change it versus who can only view it. And make sure it's actually backed up, because deleted files and ransomware don't care how important a workbook is.

If your team's files still live on one person's laptop, our cloud computing services can move them somewhere safer and easier to share. For businesses already on Microsoft 365, our Microsoft 365 backup service adds a separate, recoverable copy of OneDrive and SharePoint data.

Clean data, clear questions and a quick sanity check. That combination will get you better answers from Excel than any single new feature.