For the purposes of revenue legislation which is income, estate and gift, excise, and payroll taxes (i.e., Social Security), considered or enacted in any session of Congress, the Congressional Budget Office shall use exclusively during that session of Congress revenue estimates provided to it by the Joint Committee on Taxation. During that session of Congress such revenue estimates shall be transmitted by the Congressional Budget Office to any committee of the House of Representatives or the Senate requesting such estimates, and shall be used by such Committees in determining such estimates. The Budget Committees of the Senate and House shall determine all estimates with respect to
scoring points of order and with respect to the execution of the purposes of this Act.
CONGRESSIONAL BUDGET ACT OF 1974