Check Your Spreadsheet Before Sending — Catch Errors Before Your Client Does

You've Built It. Now Check It.

You've spent hours — maybe weeks — building this spreadsheet. You've checked the formulas you know about, reviewed the outputs against expectations, and it looks right. You're about to hit Send.

But spreadsheet errors don't respect effort. Research shows that 94% of non-trivial spreadsheets contain at least one error, and most of those errors weren't introduced by carelessness — they came from copy-paste operations that shifted relative references, deletions that cascaded through dependent formulas, or volatile functions that behaved differently depending on when the file was opened. The question isn't whether errors might exist. It's whether they matter enough to find before someone else does.

The Pre-Send Checklist

These are the issues most commonly discovered by recipients — often at the worst possible moment:

• Formula errors visible in cells — #REF!, #VALUE!, #DIV/0!: the recipient sees the error code directly in your output, which immediately raises questions about the reliability of everything else in the file
• Circular references that make totals wrong — or display as 0 when iterative calculation isn't enabled on the recipient's machine
• Broken external links that show stale cached numbers from months ago — the numbers look current, but they're not, and there's no visible indication of the problem
• Hidden sheets containing old data, draft numbers, or sensitive information you meant to delete before sending — recipients who know to look for hidden sheets will find them
• Volatile functions — NOW(), TODAY(), RAND() — that change results every time the file is opened, meaning the recipient's version may show different numbers than the one you reviewed
• Merged cells that break copy-paste in ways the recipient discovers when they try to work with your data and find they can't sort, filter, or extend the ranges
• Inconsistent formulas in ranges that should be uniform — one column of 12 monthly figures where one cell is a hard-coded number rather than a formula, which the recipient may discover when they update assumptions and find that one month doesn't change

Scenarios Where This Matters Most

The stakes vary depending on who's receiving the spreadsheet and what they'll do with it:

• Sending a financial model to investors or a board: Every formula must be correct, every assumption must be consistent, and circular references must be intentional and documented. A formula error found during due diligence signals that the model can't be trusted.
• Submitting a report to a regulator: Stale external links or visible error values in a regulatory submission can require resubmission and create a record of the error. In some jurisdictions this has direct compliance implications.
• Delivering analysis to a client: They will scrutinize your work — that's what they're paying for. A visible #REF! in a deliverable undermines the value of the analysis regardless of how sound the underlying logic is.
• Handing off to a colleague: They'll inherit your problems. If a broken external link doesn't surface until they're presenting from the file six months later, the connection back to your original build will still be there.
• Presenting at a board meeting: Volatile functions can change the numbers between the last time you reviewed the file and the moment you open it in the conference room. A TODAY() function that recalculates dates, or a RAND() embedded in a scenario model, can produce different output than what you prepared.

30 Seconds. No Excuses.

The analysis takes 15–45 seconds. You receive a 0–100 risk score, a full list of issues organized by severity, and the exact cell location of every problem. If the score is 80 or above: low risk, you're likely in good shape to send. If there are errors flagged: you know exactly what to fix before you do.

There's no install, no account, and no reason to skip it. One upload before Send is a professional habit that takes less time than spell-checking a document.

After the Check

1. Fix any issues flagged as errors — these are the ones most likely to produce wrong results or raise immediate questions from the recipient
2. Review warnings for anything that will be visible to or affect the recipient — volatile functions, inconsistent formulas, hidden sheets
3. Generate a PDF report if your recipient or workflow requires audit documentation — the report is suitable for review trails and file notes
4. Re-upload to verify the fixed version is clean before you send it