The Tax Commissioner will assess additional West Virginia tax, interest, and additions to tax arising from federal adjustments arising from an audit by the Internal Revenue Service, including a partnership level audit, or reported by the taxpayer on an amended federal income tax return or as part of an administrative adjustment request by the following dates:
(1) Timely reported federal adjustments. — If a taxpayer files with the Tax Commissioner a federal adjustments report or an amended West Virginia tax return as required within the period specified in §11-21A-2 or §11-21A-3 of this code, the Tax Commissioner may assess any West Virginia amounts, including in-lieu-of amounts, of taxes, interest, and additions to tax arising from those federal adjustments if the Tax Commissioner issues a notice of the assessment to the taxpayer by a date which is the latest of the following: