If you had a net profit from your self-employment, it should have been calculated. Real estate professional who are paid with a 1099-MISC (rather than a W-2) file a Schedule C. The net profit (over $400) is subject to self-employment taxes of 15.3%. If you had a net profit on prior year tax returns, you may want to confirm that your income was reported on Schedule C. Perhaps your expenses (such as high mileage) resulted in a net loss. In that case, no self-employment taxes would have been calculated.