Example: A taxpayer files a 2002 return on April 15, 2003, showing tax due in the amount of $100 and pays that amount at the time the return is filed. On April 1, 2006, additional tax of $50 is assessed by the department on the 2002 return and is paid by the taxpayer on May 1, 2006. Within two years the taxpayer files a claim for refund based on items not previously adjusted on the 2002 return. The refund claim shows an overpayment of $75 of the total $150 paid. The refund claim is limited to $50, the sum paid within the open period preceding the filing of the claim.
Or. Admin. Code § 150-314-0240
Stat. Auth.: ORS 305.100
Stats. Implemented: ORS 314.415