law: 43. Appeals.
  (1) Any person aggrieved by any order, not being an order mentioned in section 44 passed under this Act or the rules made thereunder, may appeal to the prescribed authority:
  Provided that where an order, not being an order mentioned in section 44 or made under section 47 is passed by the Commissioner, the person aggrieved may appeal therefrom to the Appellate Tribunal.
  (2) The Commissioner or any person aggrieved by an order passed in appeal by the prescribed authority may appeal to the Appellate Tribunal against such order.
  (3) Subject to the provisions of section 62, no appeal shall be entertained unless it is filed within sixty days from the date of service of the order appealed against.
  (4) Every appeal filed under this section shall be in the prescribed form and shall be verified in the prescribed manner and in the case of an appeal to the Appellate Tribunal filed by any person other than the Commissioner, shall be accompanied by a fee of fifty rupees.
  (5) No appeal against an order of assessment with or without penalty or against an order imposing the penalty shall be entertained by an appellate authority unless such appeal is accompanied by a satisfactory proof of the payment of tax with or without penalty or, as the case may be, of the payment of the penalty in respect of which the appeal has been preferred:
  Provided that the appellate authority may, if it thinks fit, for reasons to be recorded in writing, entertain an appeal against such order
  (a) without payment of the tax and penalty, if any, or as the case may be, of the penalty, on the appellant furnishing in the prescribed manner security for such amount as it may direct, or
  (b) on proof of payment of such smaller sum, with or without security for such amount of tax or penalty which remains unpaid, as it may direct:
  Provided further that no appeal shall be entertained by the appellate authority unless it is satisfied that such amount of tax as the appellant may admit to be due from him has been paid.(6) The appellate authority may, after giving the appellant an opportunity of being heard
  (a) confirm, reduce, enhance or annul the assessment (including any penalty imposed), or
  (b) set aside the assessment (including any penalty imposed) and direct the assessing authority to make a fresh assessment after such further inquiry as may be directed, or
  (c) pass such order as it may think fit.
  (7) Save as provided in section 45, an order passed by Appellate Tribunal on appeal shall be final.