1.  Except as otherwise provided in subsections 2, 3 and 4 and in NRS 375A.180 and 375B.210, every notice of the determination of a deficiency issued by the Department must be personally served or mailed within 3 years after the last day of the calendar month following the period for which the amount is proposed to be determined or within 3 years after the return is filed, whichever period expires later.

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2.  In the case of a failure to make a return, or a claim for an additional amount, every notice of determination must be mailed or personally served within 8 years after the last day of the calendar month following the period for which the amount is proposed to be determined.

3.  If, before the expiration of the time prescribed in this section for the mailing of a notice of determination, the taxpayer has signed a waiver consenting to the mailing of the notice after that time, the notice may be mailed at any time before the expiration of the period agreed upon. The period so agreed upon may be extended by subsequent agreements in writing if each agreement is made before the expiration of the period previously agreed upon.

4.  This section does not apply to cases of fraud or intentional evasion of the provisions of this title or any regulation adopted pursuant thereto.