So when Goldman Sachs gets caught helping clients evade taxes, and British authorities hand them a get out of jail free card:

Britain’s tax authorities have given Goldman Sachs an unusual and generous Christmas present, leaked documents reveal. In a secret London meeting last December with the head of Revenue, the wealthy Wall Street banking firm was forgiven £10m interest on a failed tax avoidance scheme.

HM Revenue and Customs sources admit privately that the interest-free deal is “a cock-up” by officials, but refuse to say who was responsible.

Documents leaked to Private Eye magazine and published in full by the Guardian record that Britain’s top tax official, HMRC’s permanent secretary Dave Hartnett, personally shook hands on a secret settlement last December.

Hartnett is due to be questioned on Wednesday by the Commons public accounts committee. The leaked documents suggest that a previous PAC chairman, Edward Leigh, was misled when he was told it was illegal to reveal details of such cases to parliament.

Leaked legal advice from James Eadie QC, which the Guardian also publishes today, says the opposite. Hartnett has discretion to reveal such facts to the parliamentary watchdog, according to the advice.

………

In the 1990s, Goldman set up a company offshore in the British Virgin Islands. This entity, called Goldman Sachs Services Ltd, supposedly employed all of Goldman’s London bankers, who were then “seconded” to work there.

The device appears to have been designed to conceal the size of the bonuses. Judge David Williams said in 2009 that it was “a way of keeping information about the GS accounts and payroll out of the public domain and confidential”.

Goldman also begrudged paying its share of UK national insurance on the six-figure bonuses. Court judgments disclose that a typical Goldman bonus to a junior banker was £143,000 in 1998, and £191,000 the following year.

The company, along with 21 investment banks and other firms, purchased blueprints for an avoidance scheme called an employee benefit trust (EBT). The bonuses were indirectly invested into elaborate share option schemes.

It took the Revenue until 2005 to demonstrate in court that these EBTs were merely illegitimate tax avoidance devices. The 21 other firms surrendered, and handed over what they owed.

But Goldman Sachs refused to pay its £30.81m bill. Instead the city firm Freshfields and the tax QC David Goldberg fought tooth and nail on Goldman’s behalf through the courts. By 2010, according to a public judgment, the unpaid bill with accumulated interest had mounted to £40m.

Seriously, we need to take these muthas down hard.