(a)If the Commissioner finds that any taxpayer has failed to discharge in full the amount of any tax liability incurred under this chapter, or that a penalty or interest should be assessed under it, the Commissioner shall notify the taxpayer of the deficiency or assess the penalty or interest, as the case may be.
(b)The Commissioner may notify a taxpayer of a deficiency with respect to the payment of any tax liability imposed under this chapter or assess a penalty or interest with respect thereto at any time within three years after the date that the taxpayer was originally required to file a manifest or other report; provided, however, that if a taxpayer fails to file a proper manifest or other report at the time prescribed for its filing, the notification or assessment may be made at a
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(a) If the Commissioner finds that any taxpayer has failed to discharge in full the amount of any tax liability incurred under this chapter, or that a penalty or interest should be assessed under it, the Commissioner shall notify the taxpayer of the deficiency or assess the penalty or interest, as the case may be.
(b) The Commissioner may notify a taxpayer of a deficiency with respect to the payment of any tax liability imposed under this chapter or assess a penalty or interest with respect thereto at any time within three years after the date that the taxpayer was originally required to file a manifest or other report; provided, however, that if a taxpayer fails to file a proper manifest or other report at the time prescribed for its filing, the notification or assessment may be made at any time before the end of three years after the taxpayer files such a manifest or other report; and if no manifest or report has been filed or if the deficiency is caused by reason of fraud or the willful intent of the taxpayer to defeat or evade a requirement of this chapter, the notification or assessment may be made at any time; and provided further that if the taxpayer and the Commissioner agree, the notification or assessment may be made at any time before the date so agreed upon.
(c) The exclusive remedy of a taxpayer with respect to a notification of deficiency or assessment of a penalty or interest shall be to petition for determination of the deficiency or assessment as provided by section 10109 of this title and appeal from which adverse determination of deficiency or assessment. Upon the failure of a taxpayer to petition in accordance with section 10109 of this title from a notice of deficiency or assessment under section 10106 of this title, or to appeal in accordance with section 10109 of this title from a determination of a deficiency or assessment, the taxpayer shall be bound by the terms of the notification, assessment, or determination. The taxpayer shall not thereafter contest, either directly or indirectly, the tax liability as therein set forth, in any proceeding, including a proceeding upon a claim of refund of all or any part of any payment made with respect to the tax liability, or a proceeding for the enforcement or collection of all or any part of the tax liability. (Added 1985, No. 70, § 7; amended 1997, No. 50, § 38, eff. June 26, 1997; 1997, No. 133 (Adj. Sess.), § 6.)