Refunds

A. If within three years after the date on which any taxes or interest are paid an employing unit which paid such taxes or interest applies (i) for adjustment in connection with subsequent tax payments, or (ii) for a refund thereof because such adjustment cannot be made, and the Commission determines that such taxes or interest or any portion thereof was erroneously collected, or within sixty days from the final determination of any change or correction in the liability of the employing unit for any tax payable under this chapter, whichever is later, subject to the availability of Commission records, the Commission shall allow such employing unit to make an adjustment, without interest, in connection with subsequent tax payments by it. If such adjustment cannot be made, the Commission shall refund the amount, without interest, from the fund. For like cause and within the same period, an adjustment or refund may be so made on the Commission's own initiative. B. Where the Commission finds upon satisfactory proof that any employing unit has erroneously paid to this Commonwealth taxes or interest upon wages earned by individuals in employment in another state, or under the provisions of the Federal Railroad Unemployment Insurance Act, a refund or adjustment shall be made, without interest, and without regard to the due date. C. Where the Commission finds that an instrumentality of the United States has paid to this Commonwealth taxes or interest upon wages for any year with respect to which this Commonwealth is not certified by the Secretary of Labor of the United States under § 3304 of the Internal Revenue Code, a refund shall be made to such instrumentality, without interest, and without regard to the date of payment.