Reuters recently reported a study showing that corporations face very long odds in tax appeals heard by the United States Supreme Court. There were 919 income tax cases in the Supreme Court of the United States from 1909 to 2011. 364 of those cases involved corporations. In "abuse" cases, the government won 61% of the time. In other cases, the government won 68% of the time. The real story is likely much grimmer since the statistics show that the US Supreme Court only grants review in about 2% of leave applications.

The Canadian Supreme Court heard 356 income tax cases between 1920 and 2003. Of these, the statistics show that the government won 223, or roughly 2/3. The record of Supreme Court tax cases between 2004 and 2012 is essentially similar. While an exact breakdown of corporate cases is not available, anecdotal evidence suggests that the success rate of corporations is roughly 1/3 (a more detailed analysis will be available in the future).

While the Canadian experience appears superficially to mirror the American statistics, a very different story is disclosed by Canadian leave to appeal statistics.

Year

Denied

Granted

2001

579

79

2002

433

53

2003

523

75

2004

466

83

2005

492

65

2006

406

55

2007

550

69

2008

448

51

2009

444

59

2010

388

54

2011

398

62

Total

5127

705

Grand Total

5832

 

Average

0.120885

 

As the chart demonstrates, roughly 12% of leave applications are granted in Canada. Thus, corporations and other taxpayers may have as high as 6 times more likelihood of success in a tax appeal before the Supreme Court of Canada than in cases before the Supreme Court of the United States.

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