TaxSlayer is designed to assume the return being created will be electronically filed. As you navigate through the entry pages, you must complete entries required for electronic filing.
There are certain entry pages that require a SSN to proceed through the page. In the circumstances where the SSN is not known the return will have to mailed in via paper.
Question: If the taxpayer does not know the SSN how do I proceed off the page?
Answer: If you enter 111-00-1111 as the SSN and enter the dollar amount you can continue preparing the tax return. However, I would use caution maybe by adding a Note to the tax return for the QR that the SSN is fake (unknown) and return should be paper filed.