7(1)A penalty under section 9(1) above relating to a claim for tax credit may be determined by an officer of the Board, or proceedings for the penalty may be commenced before the court—
(a)at any time within six years after the date on which the penalty was incurred; or
(b)at any later time within three years after the final determination of entitlement to the tax credit claimed.
(2)Any other penalty under section 9 above may be so determined, or proceedings for the penalty may be commenced before an appeal tribunal or the court, at any time within six years after the date on which the penalty was incurred or began to be incurred.