NRS 374.640: Limitations on claims for refund or credit.

Except as otherwise provided in NRS 360.235, 360.395 and 374.373:

1. No refund may be allowed unless a claim for it is filed with the Department within 3 years after the last day of the month following the close of the period for which the overpayment was made.

2. No credit may be allowed after the expiration of the period specified for filing claims for refund unless a claim for credit is filed with the Department within that period, or unless the credit relates to a period for which a waiver is given pursuant to NRS 360.355.