Answer by
GilFinn (2065)
Social Security Disability income is non-taxable. Therefore, you have no tax liabilty on the lump-sum paid once you have qualified for SSDI. You will see on the 1040 a place for non-taxable income, but that is not calculated in to the final tax liability. When unsure, it's always best to call the IRS directly using thier toll-free number.