hard-coded values

Incorrect use of Excel's NPV function is a common source of spreadsheet errors. We show several pitfalls and ways to avoid them.

Spreadsheets can be considered to be the world's most successful end-user programming language. Spreadsheet formulas are Turing complete.

Creating a slow spreadsheet is easy. Creating an efficient spreadsheet requires more thought and application of specific techniques.

Your spreadsheets may be disasters in the making. Strive for spreadsheets that are validated, reliable, and auditable.

Every study that has looked for errors has found them in considerable numbers. Spreadsheeting's childhood is over.

"Oh My God" my formulas are not working! This article covers most of the reasons for Excel formulas not working. And how to fix them.

See our bibliography of spreadsheet best practice, risk management, errors and testing, and methods for improving spreadsheets.

Spreadsheet errors are reduced by using good design. Our students do three assignments to acquire good spreadsheet design skills.