12 terrible things that could happen if you don't do your taxes
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(The IRS can seize your property.Flickr / Becky Snyder )

Taxes are due just about two weeks from today.

We're hoping that doesn't come as a shock.

If you don't file and pay your taxes, however, the things that could happen to you are pretty shocking.

Julius Green, CPA and tax practice leader for ParenteBeard in the Philadelphia region, explained to us the potential consequences of letting April 15 come and go tax-free.

Granted, you aren't guaranteed to suffer these consequences, and everyone's tax situation is different, but here are a dozen terrible things that could happen if you don't do your taxes.

You could:

Pay a penalty fee. There are two kinds of "not doing" your taxes — failing to file and failing to pay. "If you fail to file, you get hit with a penalty of 5% of the tax owed, up to five months out, with a minimum penalty of $135, or as much as 100% of the tax owed — whichever is less," Green says. If you don't pay, he continues, you're typically charged a penalty, plus you'll have to …

Pay interest. "Statutorily, the IRS can't waive interest," explains Green. "They want the time value of the money you owe them." If you fail to pay, you may be paying a penalty plus interest, which is usually determined by the federal short-term rate (anywhere from 1%-4%), plus 3%, for a total of 4%-6%.

Get notices from the IRS. It's probably fair to assume that no one wants mail from the IRS. But if you don't file or don't pay, that's exactly what could happen. "The IRS gives you multiple opportunities to get it right," says Green. "They have to send you a notice before taking any action, and usually they need a response in 30-60 days. But many people in this situation know it's coming, so they panic when they get their notice and shove it in a drawer to deal with when they have the money."

But here's the thing: Whether you have the money or not, if you don't reach out to the IRS upon receiving a notice, they could start taking action. What kind of action? Well, they can make you …

Forfeit your refund. It makes sense when you think about it. If you owe the IRS money, the agency is not going to hand over any until you pay. For example, if you didn't file taxes in 2012 and the IRS is after you, but you did file for 2013 and are due a refund, you may never see that money. The IRS could simply hold onto it. They can also make you ...

Give up your Social Security. "Through what's called the Federal Payment Levy Program, the IRS has the ability to attack certain assets after going through the appropriate notification process," explains Green. "While they can't inhibit your ability to earn money, take your work tools, or appropriate certain benefits like those paid to your children, Social Security is one thing they can seize."