“(6) If, on an appeal notified to the tribunal, the tribunal decides – (a) … (b) …. that the appellant is overcharged by an assessment other than a self-assessment, the assessment or amounts shall be reduced accordingly , but otherwise the assessment or statement shall stand good. (7) If, on an appeal notified to the Tribunal, the tribunal decides (a)… (b)… (c) that the appellant is undercharged by an assessment other than a self-assessment, the assessment or amounts shall be increased accordingly. (7A)… (8) Where, on an appeal notified to the tribunal against an assessment (other than a self-assessment) which – (a) Assesses an amount which is chargeable to tax, and (b) Charges tax on the amount assessed, The tribunal decides as mentioned in subsection (6) or (7) above, the tribunal may, unless the circumstances of the case otherwise require, reduce or, as the case may be, increase only the amount assessed and where any appeal notified to the tribunal is so determined the tax charged by the assessment shall be taken to have been reduced or increased accordingly.”
“(1) A company which – (a) fraudulently or negligently delivers a company tax return which is incorrect, or… (b) …. is liable to a tax-related penalty. (2) The penalty is an amount not exceeding the amount of tax understated, that is, the difference between – (a) the amount of tax payable by the company for the period for which the return is made, and (b) the amount which would have been so payable on the basis of the return delivered…”
“(2)(b) in the case of any other penalty, the First-tier Tribunal may – (i) if it appears that no penalty has been incurred, set the determination aside, (ii) if the amount determined appears to be appropriate, confirm the determination, (iii) if the amount determined appears to be excessive, reduce it to such other amount (including nil) as it considers appropriate, or (iv) if the amount determined appears to be insufficient, increase it to such amount not exceeding the permitted maximum as it considers appropriate.”