Section 1502. Computation of tax

(a) The tax imposed under section fifteen
  hundred one shall be the greatest of:
    (1) for taxable years beginning before July first, two thousand,  nine
  percent  of  the  taxpayer's  entire  net  income,  or  portion  thereof
  allocated within this state, for the  taxable  year,  or  part  thereof,
  except that for taxable years beginning prior to January first, nineteen
  hundred  seventy-eight,  the rate shall be four and five-tenths percent;
  for taxable years beginning  after  June  thirtieth,  two  thousand  and
  before  July  first, two thousand one, eight and one-half percent of the
  taxpayer's entire net income, or portion thereof allocated  within  this
  state,  for  the  taxable  year,  or  part  thereof;  for  taxable years
  beginning after June thirtieth, two thousand one and before July  first,
  two  thousand two, eight percent of the taxpayer's entire net income, or
  portion thereof allocated within this state, for the  taxable  year,  or
  part  thereof;  for  taxable  years  beginning after June thirtieth, two
  thousand two and before January first, two  thousand  seven,  seven  and
  one-half percent of the taxpayer's entire net income, or portion thereof
  allocated  within this state, for the taxable year, or part thereof; and
  for taxable years beginning on or  after  January  first,  two  thousand
  seven,  seven and one-tenth percent of the taxpayer's entire net income,
  or portion thereof allocated within this state, for the taxable year, or
  part thereof; or
    (2) one and six-tenths mills for each dollar of the  taypayer's  total
  business  and  investment  capital  allocated  within this state for the
  taxable year, or part thereof, except that for taxable  years  beginning
  prior  to  January first, nineteen hundred seventy-eight, the rate shall
  be eight-tenths mills; or
    (3) nine percent on thirty percent of the taxpayer's entire net income
  plus salaries and other compensation paid to the taxpayer's  elected  or
  appointed  officers  and  to  every stockholder owning in excess of five
  percent of its issued capital stock minus fifteen thousand  dollars  and
  any net loss for the reported year, or the portion of such sum allocated
  within  the state as hereinafter provided, except that for taxable years
  beginning prior to January first, nineteen  hundred  seventy-eight,  the
  rate shall be four and five-tenths percent rather than nine percent; or
    (4) two hundred fifty dollars; plus
    (b)  eight-tenths  of  a  mill  for  each dollar of the portion of the
  taxpayer's subsidiary capital allocated within the state for the taxable
  year, or part thereof, except that for taxable years beginning prior  to
  January  first,  nineteen  hundred  seventy-eight,  the  rate  shall  be
  four-tenths of a mill.