FactCheck.org has published a report  on the Republican Party’s Pledge to America and has criticized a number  of "dubious factual claims." Check out their commentary on  a number of tax provisions below, courtesy of the Tax Prof.
 
 Pledge, page 14: Unless action is taken,  a $3.8 trillion tax hike will go into effect on January 1, 2011 that  will unravel these policies. A family of four with a household income  of $50,000 a year will have to pay $2,900 more in taxes in 2011.
 
 Fact: True, but misleading. What the  Pledge fails to note is that Obama and Democratic leaders in Congress  have consistently promised to extend the Bush tax cuts for all families  making less than $250,000 a year, and singles making less than $200,000.  It’s true that hasn’t happened yet, but the reason is that several  House and Senate Democrats are agitating to extend the cuts for everybody,  even those with the highest incomes.
 Congress might yet fail to extend most  or all the cuts before they are scheduled to expire next year. As we  reported in a Sept. 3 Ask FactCheck itemon this issue, there’s always  a possibility that Congress will grind to a halt in a stalemate. And  sure enough, on Sept. 23 Senate Democrats announced they would put off  any vote on extending the cuts until after the election. A spokesman  for Democratic leader Harry Reid of Nevada said, "Democrats believe  we must permanently extend tax cuts for the middle-class before they  expire at the end of the year, and we will."
 
 Pledge, page 14: [Obama] also wants to  raise taxes on roughly half of small business income in America.
 
 Fact: This is an exaggeration. Republicans  are equating "net positive business income" reported on individual  returns with "small business income," which isn’t correct.  They rely on a report from the nonpartisan staff of the Joint Committee  on Taxation (p. 12), which estimated that about 3% of taxpayers who  have any business income on their personal returns would see a tax increase  under Obama’s proposal, and that those 750,000 taxpayers account for  about half of all the business income reported.
 But some of that income is from big businesses  raking in tens of millions of dollars a year. The JCT stated quite clearly  that "These figures for net positive business income do not imply  that all of the income is from entities that might be considered ’small.’"  Some in fact are quite large, and those big businesses account for a  good chunk of that income.
 The JCT said: "For example, in 2005,  12,862 S corporations and 6,658 partnerships had receipts of more than  $50 million."
 Republicans do have a point here. Many  small businesses and some large fraction of small-business income will  be adversely impacted by raising the top rate on individual taxpayers.
 
 The fact is, though, that the JCT couldn’t  estimate how much of the total business income was accounted for by  "small" businesses, or how many of the 750,000 individuals  affected own "small" busineses. What we do know is that a  good deal less than half the small business income, and something less  than three percent of small business owners, would be subject to higher  taxes.
 Pledge, page 28: Roughly 16,500 IRS auditors,  agents, and other employees may be needed to collect the hundreds of  billions of dollars in new taxes levied on the American people by the  new health care law.
 Fact: This is simply not true. As we  reported last March, this figure "stems from a partisan analysis  based on guesswork and false assumptions, and compounded by outright  misrepresentation." For an eye-opening account of how Republican  staff members of the House Ways and Means committee came up with this  inflated figure, see our Ask FactCheck item posted March 30. Most of  what the IRS will do under the law is hand out tax credits, not collect  penalties.