No. A Schedule C is required if you are in a trade or business. However, you can report miscellaneous income on line 21 of Form 1040 (“other income”). This miscellaneous income is not subject to self-employment tax.
A husband and wife who are required to live apart from each other by the terms of a decree of separate maintenance. Payments under the decree are deductible by the payor and taxable to the payee as alimony.