i made 831 in self employment earnings on my schedule K-1, do I have to file a tax return?

Yes. The filing requirement for self-employment is only $400. If this is your only income for 2013 the self-employment tax on $831 is $117. You won't owe any income tax.

You won't get a 1099-MISC as one uninformed response claims since this was reported on a K-1 (I'm assuming it's from a partnership's 1065 return.) Nor do you need to file a W-9 as the partnership already knows your name, address, and SSN. Finally, you are not late as long as you file and pay what you owe by April 15, 2014.

If this is your only income, you have to file a tax return. You will not owe income tax, but you will owe self-employment tax on the self-employment earnings.

If you have other self-employment activities which have a loss, and your net from all self-employment activities is $400 or less, you do not have to file a tax return, but the IRS may ask you for one anyway because of the K-1.

Yes, you'll need a misc-1099 form, and a w-9. Read the instructions at the bottom. You might need to do some other stuff, but that's off the top of my head.

A little late too, you can expect a late fee.