The tier I annuity component of a parent's insurance annuity is dependent on whether one or two parents are entitled.

(a) One parent entitled. A parent's tier I annuity component is equal to 821⁄2 percent of the PIA computed under §228.10 of this part.

(b) More than one parent entitled. A parent's tier I annuity component is equal to 75 percent of the PIA computed under §228.10 of this part.

(c) The amounts computed under paragraph (a) or (b) of this section may be adjusted for the family maximum. See §228.14 of this part.