Global Post: Your accountant may tell you how much you owe in federal taxes this year, but they won’t likely tell you how your money is spent.

Sure, we all know Washington needs cash for things like Social Security and Medicaid.

But did you know you’ll pay an average of $81.50 toward America’s nuclear weapons this year?

Or that around $1,600 will help Uncle Sam pay the interest on our national debt?

The National Priorities Project has done all the math, breaking down where your taxes go based on 2013 federal spending.

Their calculator lets you plug in your federal taxes owed for a look at what you’re paying for.

Here are six surprising ways Washington is spending your money, based on the average federal tax bill of $11,715 in 2013:

1. Emergency aid for public transportation

We’re betting you probably didn’t know that an estimated $4.66 your taxes goes toward a Federal Transit Administration program that assists public transit agencies in the aftermath of a major disaster or emergency like floods and hurricanes.

So yeah. It’s not just the Red Cross that comes to people’s aid.

When the next Superstorm Sandy floods the New York subway system? You’re paying.

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