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of due diligence by appellants. Failure to timely remit the balance due on a tax liability caused
by an oversight does not, by itself, constitute reasonable cause. (Appeal of Friedman, supra.)
While appellants’ accountant made an unintentional error, these facts do not form a basis for
granting relief from the penalty. (Ibid.)
With regard to appellant’s payment history, there is no basis for abating late-payment
penalties based on appellants’ good-filing history. Instead, the law provides that the California
late-payment penalty shall apply unless reasonable cause is shown. (R&TC, § 19132(a).) As
noted above, appellants’ have failed to establish that their failure to timely pay the tax due was
due to reasonable cause. Thus, appellants have failed to establish that the late-payment penalty
should be abated.
Issue 2: Whether appellants have established a basis for abatement of the estimated tax penalty.
Internal Revenue Code (IRC) section 6654 imposes an addition to tax, which is treated
and often referred to as a penalty, where an individual fails to timely pay estimated tax. Subject
to certain exceptions not relevant to the issues on appeal, R&TC section 19136 incorporates IRC
section 6654. The estimated tax penalty is similar to an interest charge in that it is calculated by
[calculating the estimated tax penalty by reference to the interest rate imposed on
underpayments]; R&TC, § 19136(b) [referring to R&TC, § 19521 which, with modification,
conforms to the federal interest provisions in IRC, § 6621].) There is no provision in the IRC or
R&TC that allows the estimated tax penalty to be abated based solely on a finding of reasonable
cause. As a result, there is no general reasonable cause exception to imposition of the estimated
tax penalty. (Appeal of Johnson, 2018-OTA-119P.) The estimated tax penalty is mandatory
unless the taxpayer establishes that a statutory exception applies. (Ibid.) Although there is no
provision allowing for abatement of the estimated tax penalty based solely on reasonable cause,
IRC section 6654(e)(3)(B)
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provides that the taxing agency may waive the estimated tax penalty
if it determines that the taxpayer retired after having attained age 62 in the taxable year for which
estimated payments were required to be made or in the taxable year preceding such taxable year,
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IRC section 6654(e)(3)(A) allows respondent to waive the addition of tax if it determines that, “by reason
of casualty, disaster, or other unusual circumstances the imposition of such an addition to tax would be against
equity and good conscience.” However, neither party has provided any evidence or argument to show that this
section would apply to the present matter.