WASHINGTON (AP) — President Barack Obama's plan to increase taxes on top earners would have only a small impact on the nation's economy, according to congressional budget experts. But don't tell that to small business owners facing a tax hike.

Obama's proposal would hit about 940,000 people who report business income on their individual or household returns, says the Joint Committee on Taxation, the official scorekeeper for Congress. That's only 3.5 percent of the people who report business income, but those business owners are projected to earn 53 percent of the $1.3 trillion in business income that will be reported on individual returns next year.

That, Republicans in Congress argue, makes those business owners an important engine for economic growth and job creation.