(2D)The expenses of, and incidental to, any audit under sub-section (2A) (including the remuneration of the accountant) shall be determined by the Principal Chief Commissioner or Chief Commissioner or Principal Commissioner or Commissioner] (which determination shall be final) and paid by the assessee and in default of such payment, shall be recoverable from the assessee in the manner provided in Chapter XVII-D for the recovery of arrears of tax :Provided that where any direction for audit under sub-section (2A) is issued by the Assessing Officer on or after the 1st day of June, 2007, the expenses of, and incidental to, such audit (including the remuneration of the Accountant) shall be determined by the Principal Chief Commissioner or Chief Commissioner or Principal Commissioner or Commissioner in accordance with such guidelines as may be prescribed and the expenses so determined shall be paid by the Central Government.