Paul Janssen

Spreadsheet assurance by 'control around' is a viable alternative to the traditional approach

Essential reading

Once information is loaded into a spreadsheet, it acquires properties that it may not deserve – a process called reification.
95% of all spreadsheets contain errors. So, it is almost certain that your spreadsheets are wrong.
See our bibliography of spreadsheet best practice, risk management, errors and testing, and methods for improving spreadsheets.
"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.
Your spreadsheets may be disasters in the making. Strive for spreadsheets that are validated, reliable, and auditable.
A poorly documented spreadsheet erodes effective use. Our workshops help students develop good documentation habits and skills.
Spreadsheet errors are reduced by using good design. Our students do three assignments to acquire good spreadsheet design skills.
Spreadsheet audit and review procedures are an essential part of almost all City of London financial transactions.