§ 687. Limitations on credit or refund.-- (a) General.-- Claim for
credit or refund of an overpayment of income tax shall be filed by the
taxpayer within (i) three years from the time the return was filed, (ii)
two years from the time the tax was paid, or (iii) in the case of any
overpayment arising from an erroneous denial by the department of
environmental conservation of a certification of completion pursuant to
section 27-1419 of the environmental conservation law, two years from
the time a final determination to the effect that such denial was
erroneous is made and is no longer subject to judicial review, whichever
of such periods expires the latest, or if no return was filed, within
two years from the time the tax was paid. If the claim is filed within
the three year period, the amount of the credit or refund shall not
exceed the portion of the tax paid within the three years immediately
preceding the filing of the claim plus the period of any extension of
time for filing the return unless such claim is for a credit or a
portion thereof provided pursuant to paragraph two or four of subsection
(c), paragraph two or four of subsection (d) or subsection (e) of
section six hundred six of this chapter. If the claim is not filed
within the three year period, but is filed within the two year period,
the amount of the credit or refund shall not exceed the portion of the
tax paid during the two years immediately preceding the filing of the
claim unless such claim is for a credit or a portion thereof provided
pursuant to paragraph two or four of subsection (c), paragraph two or
four of subsection (d) or subsection (e) of section six hundred six of
this chapter. In the case of a claim for credit or refund filed within
the period prescribed in paragraph (iii) of this subsection, the amount
of the credit or refund may exceed the portion of the tax paid within
the applicable period specified in the two immediately preceding
sentences, but only to the extent of the amount of the overpayment
attributable to the denial described in such paragraph. Except as
otherwise provided in this section, if no claim is filed, the amount of
a credit or refund shall not exceed the amount which would be allowable
if a claim had been filed on the date the credit or refund is allowed.

(b) Extension of time by agreement.--If an agreement under the
provisions of paragraph (2) of subsection (c) of section six hundred
eighty-three (extending the period for assessment of income tax) is made
within the period prescribed in subsection (a) for the filing of a claim
for credit or refund, the period for filing a claim for credit or
refund, or for making credit or refund if no claim is filed, shall not
expire prior to six months after the expiration of the period within
which an assessment may be made pursuant to the agreement or any
extension thereof. The amount of such credit or refund shall not exceed
the portion of the tax paid after the execution of the agreement and
before the filing of the claim or the making of the credit or refund, as
the case may be, plus the portion of the tax paid within the period
which would be applicable under subsection (a) if a claim had been filed
on the date the agreement was executed.

(c) Notice of federal change or correction.-- A claim for credit or
refund of any overpayment of tax attributable to a federal change or
correction required to be reported pursuant to section six hundred
fifty-nine shall be filed by the taxpayer within two years from the time
the notice of such change or correction or such amended return was
required to be filed with the commissioner of taxation and finance. If
the report or amended return required by section six hundred fifty-nine
is not filed within the ninety day period therein specified, no interest
shall be payable on any claim for credit or refund of the overpayment
attributable to the federal change or correction. The amount of such
credit or refund shall not exceed the amount of the reduction in tax
attributable to such federal change, correction or items amended on the
taxpayer's amended federal income tax return. This subsection shall not
affect the time within which or the amount for which a claim for credit
or refund may be filed apart from this subsection.

(d) Overpayment attributable to net operating loss carryback.--A claim
for credit or refund of so much of an overpayment as is attributable to
the application to the taxpayer of a net operating loss carryback shall
be filed within three years from the time the return was due (including
extensions thereof) for the taxable year of the loss, or within the
period prescribed in subsection (b) in respect of such taxable year, or
within the period prescribed in subsection (c), where applicable, in
respect of the taxable year to which the net operating loss is carried
back, whichever expires the latest.

(e) Failure to file claim within prescribed period.--No credit or
refund shall be allowed or made, except as provided in subsection (f) of
this section or subsection (d) of section six hundred ninety, after the
expiration of the applicable period of limitation specified in this
article, unless a claim for credit or refund is filed by the taxpayer
within such period. Any later credit shall be void and any later refund
erroneous. No period of limitations specified in any other law shall
apply to the recovery by a taxpayer of moneys paid in respect of taxes
under this article.

(f) Effect of petition to tax commission.--If a notice of deficiency
for a taxable year has been mailed to the taxpayer under section six
hundred eighty-one and if the taxpayer files a timely petition with the
tax commission under section six hundred eighty-nine, it may determine
that the taxpayer has made an overpayment for such year (whether or not
it also determines a deficiency for such year). No separate claim for
credit or refund for such year shall be filed, and no credit or refund
for such year shall be allowed or made, except--

(1) as to overpayments determined by a decision of the tax commission
which has become final; and

(2) as to any amount collected in excess of an amount computed in
accordance with the decision of the tax commission which has become
final; and

(3) as to any amount collected after the period of limitation upon the
making of levy for collection has expired; and

(4) as to any amount claimed as a result of a change or correction
described in subsection (c).

(g) Limit on amount of credit or refund.--The amount of overpayment
determined under subsection (f) shall, when the decision of the tax
commission has become final, be credited or refunded in accordance with
subsection (a) of section six hundred eighty-six and shall not exceed
the amount of tax which the tax commission determines as part of its
decision was paid--

(1) after the mailing of the notice of deficiency, or

(2) within the period which would be applicable under subsections (a),
(b) or (c), if on the date of the mailing of the notice of deficiency a
claim had been filed (whether or not filed) stating the grounds upon
which the tax commission finds that there is an overpayment.

(h) Early return.--For purposes of this section, any return filed
before the last day prescribed for the filing thereof shall be
considered as filed on such last day, determined without regard to any
extension of time granted the taxpayer.

(i) Prepaid income tax.--For purposes of this section, any tax paid by
the taxpayer before the last day prescribed for its payment, any income
tax withheld from the taxpayer during any calendar year, and any amount
paid by the taxpayer as estimated income tax for a taxable year shall be
deemed to have been paid by him on the fifteenth day of the fourth month
following the close of his taxable year with respect to which such
amount constitutes a credit or payment.

(j) Return and payment of withholding tax.--Notwithstanding subsection
(h), for purposes of this section with respect to any withholding tax--

(1) if a return for any period ending with or within a calendar year
is filed before April fifteenth of the succeeding calendar year, such
return shall be considered filed on April fifteenth of such succeeding
calendar year; and

(2) if a tax with respect to remuneration paid during any period
ending with or within a calendar year is paid before April fifteenth of
the succeeding calendar year, such tax shall be considered paid on April
fifteenth of such succeeding calendar year.

(k) Running of periods of limitation suspended while taxpayer is
unable to manage financial affairs due to disability. -- (1) In the case
of an individual taxpayer, the running of the periods specified in
subsections (a), (b), and (c) of this section shall be suspended during
any period of such individual's life that such individual is financially
disabled. For purposes of this subsection, an individual taxpayer is an
individual who is subject to any state or local personal income tax or
surcharge administered by the commissioner.

(2) For purposes of paragraph one of this subsection, an individual
taxpayer is financially disabled if such individual is unable to manage
his or her financial affairs by reason of a medically determinable
physical or mental impairment of that individual which can be expected
to result in death or which has lasted or can be expected to last for a
continuous period of not less than twelve months. An individual shall
not be considered to have such an impairment unless proof of the
existence thereof is furnished in such form and manner as the
commissioner may require.

(3) An individual taxpayer shall not be treated as financially
disabled during any period that such individual's spouse or any other
person is authorized to act on behalf of such individual in financial
matters.

(l) Cross reference.-- For provision barring refund of overpayment
credited against tax of a succeeding year, except for good cause shown,
see subsection (e) of section six hundred eighty-six.