You did not u201cfill out a 1099.u201d The businesses that paid you may be required to pryou with a Form 1099-MISC documenting how much you were paid. A copy of that goes to the IRS and possibly your state Department of Revenue and they will be looking for that income on your tax return.The law requires you to keep accurate business records and to use those records to prepare and file your tax returns. Use any 1099s as a sanity check that the numbers are correct and get them corrected if they are not.As a self-employed business, you file a Form 1040 return and attach Schedule C to report the business revenue and expenses. If the net profit is $400 or more, you attach Schedule SE to figure the 15.3% self-employment tax.From the way that your question is worded, you need professional assistance and you need it now. Find a CPA or EA who can get you on track.