Senior staff resignations have risen by 45% in 2011/12 at HMRC, bringing the number walking out the door to 42 (29 in 2010/11), according to UHY Hacker Young.
The figures relate to senior civil servants and employees at grades 6 and 7 earning more than £47,000 per year. The taxman drew considerable criticism after controversies over PAYE coding errors and unanswered phone calls to its tax help lines.
Overall resignations in 2011/12 rose, too, with 1,629 leaving, a 48% increase on the 1,100 who handed in their notice the previous year.
The personal tax department was the hardest hit, with a 71% rise, up to 1,187 from 695 in 2010/11.
Enforcement and compliance saw 281 resignations, an increase of 15% from 244 in 2010-11.