SaferSheets blog
Field notes from real spreadsheet audits.
Practical guides on auditing Excel and Google Sheets — formulas, data quality, hidden risks, and the boring details that turn into expensive mistakes when nobody checks them.
20 articles · updated regularly
Audit playbook
7 articles
How to Audit an Excel Workbook Before Sending It
Learn how to audit an Excel workbook before sending it to a client, manager, investor, or team. Check formulas, hidden sheets, links, duplicates, and data quality.
May 17, 2026·3 min readExcel Audit Checklist for Finance Teams
A practical Excel audit checklist for finance teams reviewing budgets, forecasts, reports, financial models, and management files.
May 7, 2026·2 min readHow to Review an Inherited Workbook
Learn how to review an inherited Excel workbook when you do not know how it works. Check structure, formulas, assumptions, links, hidden sheets, and risks.
May 6, 2026·2 min readHow to Prepare an Excel File Before Sending It to a Client
Learn how to prepare an Excel file before sending it to a client, including formula checks, hidden sheets, external links, formatting, and data cleanup.
May 3, 2026·2 min readExcel Quality Control Checklist for Accountants
A practical Excel quality control checklist for accountants reviewing reports, reconciliations, schedules, and client workbooks.
May 2, 2026·2 min readBest Excel Auditing Tools for Finance Teams
Discover the best types of Excel auditing tools for finance teams, from built-in Excel features to spreadsheet risk scanners and workbook review tools.
Apr 29, 2026·2 min readExcel Data Cleaning Checklist
Use this Excel data cleaning checklist to prepare data before analysis, reporting, pivot tables, dashboards, or financial models.
Apr 28, 2026·2 min read
Hidden risks
4 articles
10 Hidden Excel Errors That Can Ruin Your Report
Discover 10 hidden Excel errors that can ruin reports, budgets, dashboards, and financial models — from broken formulas to hidden sheets and duplicate rows.
May 16, 2026·2 min readWhy Excel External Links Break When You Share Files
Learn why Excel external links break when you share files and how to check your workbook before sending it to clients or colleagues.
May 13, 2026·2 min readWhy Hidden Sheets Are Dangerous in Excel Files
Hidden sheets in Excel can contain outdated assumptions, sensitive data, or calculations that affect reports. Learn why they matter and how to review them.
May 5, 2026·2 min readSpreadsheet Risk Management for Small Businesses
Learn how small businesses can reduce spreadsheet risk in Excel files used for budgets, sales reports, cash flow, inventory, and operations.
May 1, 2026·2 min read
Formula deep-dive
4 articles
How to Find Broken Formulas in Excel
Learn how to find broken formulas in Excel, including #REF!, #VALUE!, #DIV/0!, #N/A, #NAME?, and other formula errors.
May 15, 2026·2 min readHow to Detect Hardcoded Values in Excel Formulas
Learn how to detect hardcoded values in Excel formulas and why hidden assumptions inside formulas can create spreadsheet risk.
May 14, 2026·2 min readHow to Find Formula Inconsistencies Across Rows
Learn how to find formula inconsistencies across rows in Excel and detect copied formula errors before they affect your report.
May 9, 2026·2 min readFormula Drift in Excel: What It Is and How to Catch It
Learn what formula drift is, why it causes spreadsheet errors, and how to detect inconsistent formulas across Excel rows and columns.
Apr 30, 2026·2 min read
Data quality
3 articles
How to Check If Numbers Are Stored as Text in Excel
Learn how to identify numbers stored as text in Excel and why this issue can break formulas, pivots, filters, and financial reports.
May 12, 2026·2 min readHow to Clean Messy Excel Data Before Analysis
Learn how to clean messy Excel data before analysis by fixing duplicates, blanks, numbers as text, date issues, spaces, and inconsistent headers.
May 11, 2026·2 min readHow Duplicate Rows Distort Financial Reports
Learn how duplicate rows in Excel can overstate revenue, costs, balances, and transaction counts in financial reports.
May 4, 2026·2 min read