If a taxpayer and the Commissioner of Internal Revenue enter into an agreement, or renewal thereof, extending the period of time for giving notices of deficiencies and assessing deficiencies of federal income tax for tax years beginning on or after January 1, 1969, the period within which a refund claim may be filed or a refund allowed if no claim is filed shall be within the limits set forth in subsections (1) to (5) of ORS 314.415 or within six months from the expiration date of the federal agreement, whichever period expires the later.
Or. Admin. Code § 150-314-0252
Stat. Auth.: ORS 305.100
Stats. Implemented: ORS 314.415