Here is the way to add another
Self-employment/Schedule C business to your return for your wife.
To add another business or Schedule C, follow
these steps (See the attached screenshot below. Click to enlarge.):
Go to Business tab-Continue
Choose I'll choose what to work on
Business Income and Expenses
Profit or Loss from Business
, click Start or
Update.
You should see the Business Summary page that
lists your businesses, right below the list you can Add Another Business.
Be sure to add it under the right spouse.