According to the NSBA, 83% of small businesses pay taxes on the owner's personal income tax level.

WSJ: Small-Business Groups React to Tax Plan

But the number predicting recession jumped to 34% in July 2012, which the NSBA says is the highest number since December 2009.

FORBES: Small Business Owners Lose Confidence, Slow Hiring Plans

The NSBA survey found that 68% considered economic uncertainty to be the biggest challenge to the future growth and survival of their business (not a great shocker in an election year).

FORBES: Small Business Owners Lose Confidence, Slow Hiring Plans

In considering tax-related burdens, 56% of business owners say the administrative headaches imposed by the federal tax code are the largest burden on their business, according to a March 2012 survey of 350 NSBA members.

WSJ: Small Firms React to President's Proposals

"Although the proposal does include some positive language for small-business tax credits, NSBA believes firmly that the only way to ensure fairness, transparency and eased complexity of the U.S. tax code is broad reform, " Todd McCracken, president of the NSBA, said in a statement.

WSJ: Small-Business Groups React to Tax Plan