Dan and Diana file a joint return. Dan earned $31,000 during the year before losing his job. Diana received Social Security benefits of $5,000. Requirements Determine the taxable portion of the Social Security benefits. b. What is the taxable portion of the Social Security benefits if Dan earned $46,000? a. Requirement a. Determine the taxable portion of the Social Security benefits. Begin by computing the provisional income. Only select items that are applicable to Dan and Diana. (Leave unused input fields blank, do not select a label or enter a zero.) 46000 | Adjusted gross income (excluding Social Security benefits) Plus: 50% of Social Security benefits Provisional income 48500