Robert Gaines-Cooper, the Seychelles-based UK multi-millionaire in a long-running battle with HMRC, has won the right to appeal to the Supreme Court.
Around 15 million people are facing long delays on their tax rebates as a result of HMRC revamping its security system.
Chief information officer Deepak Singh was paid £149,500 by HMRC to work three months beyond his leaving date.
The Government could rescue the tax General Anti-Avoidance Rule (GAAR), which was dismissed by Labour as "unworkable".
Individuals, trustees and personal representatives of deceased persons will be hit by a CGT rise to 28% for higher rate income taxpayers from midnight tonight.
Capital gains tax (CGT) revenues have increased 23% in the last two years, despite falling numbers of enquiries, according to research by a chartered accountants.
An HM Revenue & Customs (HMRC) debt collection officer has been jailed after pleading guilty to stealing almost £85,000 from taxpayers.
The British Chamber of Commerce (BCC) warns the Government's planned rise in CGT on non-business assets would hit firms' assets too.
HMRC is tightening up on all tax payments and, in some cases, refusing requests for deferrals on larger VAT bills, research suggests.
Zurich is planning to move its £35bn British life assurance business to Dublin to cut its tax bill.