Section 1513. Declarations of estimated tax

(a)  Requirements  of
  declaration.--Every taxpayer subject to the  taxes  imposed  under  this
  article  shall  make  a declaration of its estimated tax for the current
  taxable  year,  containing  such  information  as  the  commissioner  of
  taxation  and  finance  may prescribe by regulations or instructions, if
  such estimated tax can reasonably be expected  to  exceed  one  thousand
  dollars.  If  a  taxpayer  is  subject  to  the tax surcharge imposed by
  section fifteen hundred five-a and such taxpayer's estimated  tax  under
  this  article  can  (without  regard  to  section fifteen hundred five-a
  thereof) reasonably be expected to exceed  one  thousand  dollars,  such
  taxpayer  shall  also  make a declaration of its estimated tax surcharge
  for the current taxable year.
    (b) Definition of estimated tax and estimated tax surcharge. The terms
  "estimated tax" and "estimated tax surcharge" mean the amounts which the
  taxpayer estimates to be the taxes imposed by sections  fifteen  hundred
  one,  fifteen  hundred  two-a and fifteen hundred ten of this article or
  the tax surcharge imposed by section  fifteen  hundred  five-a  of  this
  article, respectively, for the current taxable year, less the sum of any
  credits  which  it  estimates  to be allowable against such taxes or tax
  surcharge, respectively.
    (c) Time of filing declaration.--A declaration of estimated tax and  a
  declaration  of estimated tax surcharge shall be filed on or before June
  fifteenth of the current taxable year in the case of  a  taxpayer  which
  reports on the basis of a calendar year, except that if the requirements
  of subdivision (a) of this section are first met:
    (1)  after May thirty-first and before September first of such current
  taxable year the declaration shall  be  filed  on  or  before  September
  fifteenth, or
    (2)  after  August  thirty-first  and  before  December  first of such
  current taxable year, the  declaration  shall  be  filed  on  or  before
  December fifteenth.
    (d)  Amendments of declaration.--A taxpayer may amend a declaration of
  estimated  tax  or  a  declaration  of  estimated  tax  surcharge  under
  regulations prescribed by the commissioner of taxation and finance.
    (e)  Return as declaration. If, on or before February fifteenth of the
  succeeding year in the case of  a  taxpayer  whose  taxable  year  is  a
  calendar  year,  a  taxpayer files its return for the year for which the
  declaration is required, and pays therewith the balance, if any, of  the
  full amount of the tax or tax surcharge shown to be due on the return
    (1)  such  return  shall  be  considered  as  its  declaration  if  no
  declaration was required to be filed during the taxable year  for  which
  the  tax  or  tax surcharge was imposed, but is otherwise required to be
  filed on or before December  fifteenth  pursuant  to  paragraph  two  of
  subdivision (c) of this section, and
    (2)  such  return  shall  be  considered as the amendment permitted by
  subdivision (d) of this section  to  be  filed  on  or  before  December
  fifteenth  if  the  tax  or tax surcharge shown on the return is greater
  than the estimated tax or estimated tax surcharge, as the case  may  be,
  shown on a declaration previously made.
    (f) Short taxable period. If the taxable period for which a tax or tax
  surcharge  is  imposed  under  this  article is less than twelve months,
  every taxpayer required to make a declaration  of  estimated  tax  or  a
  declaration  of  estimated  tax  surcharge for such taxable period shall
  make such declaration in accordance with rules of  the  commissioner  of
  taxation and finance.
    (g) Fiscal year. The provisions of this section shall apply to taxable
  years of twelve months other than a calendar year by the substitution of

  the months of such fiscal year for the corresponding months specified in
  such provisions.
    (h)  Extension  of  time.  The  tax  commission may grant a reasonable
  extension of time, not to exceed three months, for  the  filing  of  any
  declaration  required  pursuant  to  this  section,  on  such  terms and
  conditions as it may require.