Nolan Gesher

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

The cascading structure of typical spreadsheet formulae means that just about every spreadsheet is almost certainly wrong.

Good spreadsheets are essential for informing decision making. But most spreadsheets are not good. We help you make better spreadsheets.

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

Spreadsheet audit and review procedures are an essential part of almost all City of London financial transactions.

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

"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.

This article walks you through different methods and built-in tools that can be used to audit and debug Excel spreadsheets.