Section 617. Maintenance of effort

Such amount of state aid provided will
  be used to support and to the extent practicable, to increase the  level
  of  funds  that  would otherwise be made available for such purposes and
  not to supplant the amount to be provided by the  municipalities.  If  a
  municipality  that  is  provided state aid pursuant to title one of this
  article reduces its expenditures beneath the amount expended in its base
  year, which is the greater of its expenditures in its fiscal year ending
  in either nineteen hundred eighty-five or the most  recent  fiscal  year
  for which the municipality has filed an annual expenditure report to the
  department, state aid reimbursement provided pursuant to subdivision one
  of  section  six  hundred  five  of  this article will be reduced by the
  difference between the reduction in local expenditures between its  base
  year  and its current fiscal year and the reduction in state aid between
  the base year and the current fiscal year pursuant to paragraphs (a) and
  (b) of subdivision two of section six hundred five of  this  article.  A
  municipality  may  include revenue, excluding third party reimbursement,
  raised by the municipality in calculating its maintenance of effort.