If a participant dies before separation or retirement from the Agency and is survived by a spouse or by a former spouse qualifying for a survivor annuity under section 2032(b) of this title, such surviving spouse shall be entitled to an annuity equal to 55 percent of the annuity computed in accordance with paragraphs (2) and (3) of this subsection and section 2031(a) of this title, and any such surviving former spouse shall be entitled to an annuity computed in accordance with section 2032(b) of this title and paragraph (2) of this subsection as if the participant died after being entitled to an annuity under this subchapter. The annuity of such surviving spouse or former spouse shall commence on the day after the participant dies and shall terminate on the last day of the month before the death or remarriage before attaining age 55 of the surviving spouse or former spouse (subject to the payment and restoration provisions of sections 2031(b)(3)(C), 2031(i), and 2032(b)(3) of this title).
The annuity payable under paragraph (1) shall be computed in accordance with section 2031(a) of this title, except that the computation of the annuity of the participant under such section shall be at least the smaller of (A) 40 percent of the participant’s high-3 average pay, or (B) the sum obtained under such section after increasing the participant’s length of service by the difference between the participant’s age at the time of death and age 60.
Notwithstanding paragraph (1), if the participant had a former spouse qualifying for an annuity under section 2032(b) of this title, the annuity of a surviving spouse under this section shall be subject to the limitation of section 2031(b)(3)(B) of this title, and the annuity of a former spouse under this section shall be subject to the limitation of section 2032(b)(4)(B) of this title.
For purposes of this subsection, the term “former spouse” includes any former wife or husband of a participant, regardless of the length of marriage or the amount of creditable service completed by the participant.