"SECTION 235. Preservation of Books of Accounts and Other Accounting Records. - All the books of accounts, including the subsidiary books and other accounting records of corporations, partnerships, or persons, shall be preserved by them for a period beginning from the last entry in each book until the last day prescribed by Section 203 within which the Commissioner is authorized to make an assessment. The said books and records shall be subject to examination and inspection by internal revenue officers: Provided, That for income tax purposes, such examination and inspection shall be made only once in a taxable year, except in the following cases:

"(a) Fraud, irregularity or mistakes, as determined by the Commissioner;

"(b) The taxpayer requests reinvestigation;

"(c) Verification of compliance with withholding tax laws and regulations;

"(d) Verification of capital gains tax liabilities; and

"(e) In the exercise of the Commissioner's power under Section 5(B) to obtain information from other persons in which case, another or separate examination and inspection may be made. Examination and inspection of books of accounts and other accounting records shall be done in the taxpayer's office or place of business or in the office of the Bureau of Internal Revenue. All corporations, partnerships or persons that retire from business shall, within ten (10) days from the date of retirement or within such period of time as may be allowed by the Commissioner in special cases, submit their books of accounts, including the subsidiary books and other accounting records to the Commissioner or any of his deputies for examination, after which they shall be returned. Corporations and partnerships contemplating dissolution must notify the Commissioner and shall not be dissolved until cleared of any tax liability.

"Any provision of existing general or special law to the contrary notwithstanding, the books of accounts and other pertinent records of tax-exempt organizations or grantees of tax incentives shall be subject to examination by the Bureau of Internal Revenue for purposes of ascertaining compliance with the conditions under which they have been granted tax exemptions or tax incentives, and their tax liability, if any.