; and (ii) an annual per capita expenditure target for such beneficiaries, reflecting the base expenditure amount adjusted for risk and adjusted growth rates. (B) Comparative performance target The Secretary shall establish for the agency a comparative performance target equal to the average total payments under such parts A and B during the pilot project for comparable individuals in the same geographic area that are not determined to be within the scope of the pilot project. (2) Incentive Subject to paragraph (3), the Secretary shall pay to each participating home care agency an incentive payment for each year under the pilot project equal to a portion of the Medicare savings realized for such year relative to the performance target under paragraph (1). (3) Limitation on expenditures The Secretary shall limit incentive payments under this section in order to ensure that the aggregate expenditures under title XVIII of the Social Security Act ( 42 U.S.C. 1395 et seq.) (including incentive payments under this subsection) do not exceed the amount that the Secretary estimates would have been expended if the pilot projects under this section had not been implemented. (d) Waiver authority The Secretary may waive such provisions of titles XI and XVIII of the Social Security Act ( 42 U.S.C. 1301 et seq.