Disability Insurance Amendments

[AI summary unavailable — showing source text] Disability Insurance Amendments - Amends Title II: (Old-Age, Survivors, and Disability Isurance) of the Social Security Act to provide separate and increased financing for the disability insurance program. Amends the Internal Revenue Code of 1954 to establish a Disability Insurance tax on self-employment income, employees' wages, and wages paid by employers. Establishes lower rates for the Old Age and Survivors tax to reflect the removal of Disability tax from such tax. Limits, under such title as specified, funds made available for the rehabilitation program. Authorizes the Secretary of Health, Education, and Welfare to prescribe criteria for determining when services performed or earnings derived from services demonstrate an individual's ability to engage in substantial gainful activity. Authorizes the Secretary to prescribe by regulation the level of severity which shall be deemed to be sufficient to preclude an individual from engaging in substantial gainful work as required for a finding of disability. Provides that agreements between the Secretary and State agencies authorizing such agencies to make determinations as to an individual's disability or date of disability within …