If your name on your social security card has two middle names, in order to e-file you will need to include your second middle name as part of the last name as you stated above. This is because the IRS automatically assumes that the third name on your Social Security Card is your Last Name.
For example, if the name on your card is Sara Meredith Judith Jones, you would enter the name as follows:
First: Sara
Middle: Meredith
Last: Judith Jones
Please comment below if you need further clarification.
