In determining whether individuals continue to meet the income requirements used in December 1973, for purposes of determining eligibility under §§ 435.131 , 435.132 , and 435.133 , the agency must deduct increased OASDI payments to the same extent that these deductions were in effect in December 1973. These deductions are required by section 306 of the Social Security Amendments of 1972 (Pub. L. 92-603 ) and section 1007 of Pub. L. 91-172 (enacted Dec. 30, 1969), modified by section 304 of Pub. L. 92-603 .
42 C.F.R. §435.640