HM Revenue & Customs (HMRC) is set to double the tax team dedicated to catching wealthy tax avoiders as it widens the scope of affluent taxpayers it monitors.
The affluent compliance team is set to recruit 100 additional inspectors as the unit's workload expands, said HMRC.
The team will monitor individuals with an annual income of more than £150,000 and wealth between £1 million and £20 million.
This will bring more taxpayers under its supervision as it used to cover wealth of £2.5 million to £20 million.
By the end of December 2012 the unit had brought in an extra £75 million in tax and is targeting £586 million by the end of 2015.
Exchequer secretary to the Treasury David Gauke said: 'The vast majority of people pay their way. Dodging tax is immoral, illegal and unaffordable and the minority who cheat are increasingly finding that, thanks to the work of the affluent team, they have made a big mistake.'
HMRC is looking for people with external, recent corporate or commercial experience with the appropriate qualifications for inspector and lead case director roles, it said.