When news leaked that the deadline for mandatory online corporation tax (CT) filing would pass without the promised updates to the software packages Sage Accounts Production and Sage Accounts Production Advanced, there was a furore. Maybe it was timing (the revelation coincided with the end of the self-assessment season, when nerves are understandably frayed); maybe it was genuine shock (it is almost unheard of for software providers to miss such milestones); maybe it was just too good an opportunity to waste (most software suppliers have the necessary systems ready and waiting, though the same cannot be said of many accountants).