18.26% of IT projects in the cross-industry study exceeded their budgets by more than 50%.

Format Online paper / PDF

Location PART 1 - TONS OF PUNKS, ONE BIG JERK CHAPTER 3: TOUCHGRASS Future Polish

"18.26% of IT projects in the cross-industry study exceeded their budgets by more than 50%."

The study reports an 18.26% base rate for IT projects entering its severe-overrun tail, defined as cost exceeding the estimate by more than 50%.

Source title The Uniqueness of IT Cost Risk: A Cross-Group Comparison of 23 Project Types

Source authors Bent Flyvbjerg, Alexander Budzier, Jon Aaen, Mark Keil, Mariagrazia Zottoli

Source year 2025

Confidence high

Importance high