If you stated that you received a 1099-misc, you would be asked for an EIN from the form. If you did not receive one, you would enter that you did not receive one, but had income from another source, such as cash. You would not be asked for an EIN in that case.
If you did receive one, you can't e-file without the EIN. If you did not, you need to go back and indicate that your worked for cash in the income section. You do not need to change any expense amounts.
@david_a_straight
