Every year the tax code is tweaked here and there, and most of us don't even notice it.
But because of the Affordable Care Act, up to 30 million people will likely see a change.
“I would say it's the biggest tax code change that we've had probably in the past 10 years or so,” said Ann Marie Bauman, a senior tax advisor with H&R Block.
Bauman has already heard the stories from people who opted to forgo health insurance last year.
“They said 'oh, you know what? It's not going to impact me. I'm only going to get hit with $95' and they walk away not realizing that that penalty is a lot bigger,” Bauman said.
The other part of the penalty is "or 1 percent of taxable household income, whichever amount is greater."
Another common hiccup is if you obtained insurance through the federal marketplace and received a tax credit for financial assistance.
If you or your spouse then got a part-time job sometime last year, you may have to repay part of the tax credit.
While most of us have April 15 circled on our calendars, you may want to go ahead and circle Feb. 15 as well.
“They need to get that insurance," Bauman said. "If they didn't have it by then, or they're gonna now be hit with another penalty next year and the penalty then starts at $325 per person or 2 percent.”
If you're one of those who doesn't even start thinking about filing your taxes until you get your W-2, rethink that plan.
Tax preparers are starting to get slammed earlier than ever and now is when you need pull all your financial records together and get to work.