Millions Face Surprise Tax Bills Under ‘Obamacare’

◼ Health care providers, advocates and tax experts say the vast majority of Americans know very little about the new health care law, let alone the kind of detailed information many will need to navigate its system of subsidies and penalties. - CBS-Washington

President Barack Obama’s new health care law will offer subsidies to help people buy private health insurance on state-based exchanges, if they don’t already get coverage through their employers. The subsidies are based on income. The lower your income, the bigger the subsidy.

But the government doesn’t know how much money you’re going to make next year. And when you apply for the subsidy, this fall, it won’t even know how much you’re making this year. So, unless you tell the government otherwise, it will rely on the best information it has: your 2012 tax return, filed this spring.

What happens if you or your spouse gets a raise and your family income goes up in 2014? You could end up with a bigger subsidy than you are entitled to. If that happens, the law says you have to pay back at least part of the money when you file your tax return in the spring of 2015.

That could result in smaller tax refunds or surprise tax bills for millions of middle-income families.