Section 406(2) in The Bombay Provincial Municipal Corporations Act, 1949
(2)No such appeal [shall been entertained] unless-(a)it is brought within fifteen days after the accrual of the cause of complaint;(b)in the case of an appeal against a rateable value a complaint has previously been made to the Commissioner as provided under this Act and such complaint has been disposed of;(c)in the case of an appeal against any tax in respect of which provision exists under this Act for a complaint to be made to the Commissioner against the demand, such complaint has previously been made and disposed of;(d)in the case of an appeal against any amendment made in the assessment book for property taxes during the official year, a complaint has been made by the person aggrieved within fifteen days after he first received notice of such amendment, and his complaint has been disposed of;(e)in the case of an appeal against a tax, or in the case of an appeal made against a [rateable value the amount of the disputed tax claimed from the appellant or the amount of the tax chargeable on the basis of the disputed rateable value, up to the date of filing, the appeal has been deposited by the appellant with the Commissioner]:[Provided that where in any particular case the judge is of the opinion that the deposit of the amount by the appellant will cause undue hardship to him, the judge may in his discretion, either unconditionally or subject to such conditions as he may think fit to impose, dispense with a part of the amount deposited so however that the part of the amount so dispensed with shall not exceed twenty five percent of the amount deposited or required to be deposited.]