Section 11-620. Gross income defined

1. The term "gross income" includes
  gains, profits and income derived from the business,  of  whatever  kind
  and  in  whatever  form  paid,  including  gains, profits or income from
  dealings in property, whether real or personal,  or  gains,  profits  or
  income  received  as  compensation  for  services,  as  interest, rents,
  commissions, brokerage or other fees, or otherwise in carrying  on  such
  business,  including  all  dividends received on stocks and all interest
  received from federal, state, municipal or other bonds.
    2. If the gross income of a taxpayer is derived from business  carried
  on  both  within  and  without  the  city,  "gross  income"  means  that
  proportion thereof which is derived from business carried on within  the
  city, to be allocated and determined on the basis of separate accounting
  for  each  office  or  branch or, at the election of the taxpayer, under
  rules and regulations prescribed by the commissioner of finance.
    3. "Gross income" of a savings bank shall include the amount  received
  by it in any taxable year as a distribution in liquidation of the mutual
  savings bank fund.