Section 13-526. Contributions of the city and their use; expense fund

a. The
  expense  fund shall consist of such amounts as shall be appropriated, if
  any, by the employer on estimates submitted by the retirement board,  to
  defray  the  expenses  of  the  administration of this chapter, and such
  funds as may be secured pursuant to the provisions of subdivision  b  of
  section  13-518 of the code, subdivision k of section 13-570 of the code
  and subdivision b of section 13-582 of the code exclusive of the payment
  of  pensions,  of   pensions-providing-for-increased-take-home-pay,   of
  annuities,  of retirement allowances, and of the other benefits provided
  for in this chapter.
    b. The executive director shall develop procedures to ensure that  the
  amounts  expended  during  a fiscal year by the retirement system do not
  exceed the amounts paid into the expense fund pursuant to this  section.
  Appropriate  reporting  will be made to the mayor's office of management
  and budget so as to provide the city of New York  with  the  ability  to
  conduct  an  independent  analysis.  Additionally,  expenditures  of the
  retirement system from the expense fund shall be subject to audit by the
  comptroller, who  may  recommend  procedures  designed  to  improve  the
  accounting and expenditure controls.