1% of all formulas in operational spreadsheets are in error.Powell, Baker & Lawson (2009)
Spreadsheets have a notoriously high number of faults.Rust, et al (2006)
Never assume a spreadsheet is right, even your own.Raffensperger (2001)
A significant proportion of spreadsheets have severe quality problems.Ayalew (2007)
Every study, without exception, has found error rates much higher than organizations would wish to tolerate.Panko (1999)
Spreadsheets contain errors at an alarmingly high rate.Abraham, et al (2005)
Spreadsheets... pose a greater threat to your business than almost anything you can imagine.Howard (2005)
60% of large companies feel 'Spreadsheet Hell' describes their reliance on spreadsheets.Murphy (2007)
Spreadsheets are extraordinarily and unacceptably prone to error.Dunn (2010)
A lot of decisions are being made on the basis of some bad numbers.Ross (1996)
Spreadsheet errors are still the rule rather than the exception.Nixon & O'Hara (2010)
The results given by spreadsheets are often just wrong.Sajaniemi (1998)
Spreadsheets are alarmingly error-prone to write.Paine (2001)
Untested spreadsheets are riddled with errors.Miller (2005)
People tend to believe their spreadsheets are more accurate than they really are.Caulkins, Morrison, & Weidemann (2006)
Spreadsheet errors have resulted in huge financial losses.Abraham & Erwig (2007)
Errors in spreadsheets are as ubiquitous as spreadsheets themselves.Colbenz (2005)
Spreadsheets are commonly used and commonly flawed.Caulkins, Morrison & Weidemann (2008)
Spreadsheets are notoriously error-prone.Cunha, et al (2011)
The quality and reliability of spreadsheets is known to be poor.Bishop & McDaid (2007)
94% of the 88 spreadsheets audited in 7 studies have contained errors.Panko (2008)
Spreadsheet errors are pervasive, stubborn, ubiquitous and complex.Irons (2003)
It is now widely accepted that errors in spreadsheets are both common and potentially dangerous.Nixon & O'Hara (2010)
Most large spreadsheets have dozens or even hundreds of errors.Panko & Ordway (2005)
Your spreadsheets may be disasters in the making.Caulkins, Morrison, & Weidemann (2006)
Programmers exhibit unwarranted confidence in the correctness of their spreadsheets.Krishna, et al (2001)
Every study that has looked for errors has found them... in considerable abundance.Panko & Halverson (1996)
Errors in spreadsheets... result in incorrect decisions being made and significant losses incurred.Beaman, et al (2005)
...few incidents of spreadsheet errors are made public and these are usually not revealed by choice.Kruck & Sheetz (2001)
Most executives do not really check or verify the accuracy or validity of [their] spreadsheets...Teo & Tan (1999)
Spreadsheets are easy to use and very hard to check.Chen & Chan (2000)
The untested spreadsheet is as dangerous and untrustworthy as an untested program.Price (2006)
Even obvious, elementary errors in very simple, clearly documented spreadsheets are... difficult to find.Galletta, et al (1993)
The issue is not whether there is an error but how many errors there are and how serious they are.Panko (2007)
Spreadsheet errors... a great, often unrecognised, risk to corporate decision making & financial integrity.Chadwick (2002)
Experience tells us that you shouldn't trust your spreadsheets. Spreadsheets are notorious for being riddled with errors.
Spreadsheet errors are common and often costly. The spreadsheets that you rely on to inform decision making, produce reports, maintain records and for many other day-to-day applications are almost certainly wrong.
Around 95% of all spreadsheets contain material errors. If your spreadsheets have not been rigorously tested and verified by an independent tester, then you cannot trust that they produce reliable, accuracy, and robust results. We offer an independent testing service for Microsoft Excel spreadsheets, using sophisticated testing tools applied by spreadsheet testing experts.
If you are worried about the reliability, accuracy, or robustness of your spreadsheets, then please contact us to find out how we can help by testing your spreadsheets.
This website contains information about spreadsheet errors and testing, based on the academic literature and our own extensive practical experience of working with spreadsheets.
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