The accounting system of a company shall be on the accrual basis. But a profit-seeking enterprise not organized as a company may, if there is an established custom of the business or if the volume of business is small report to the local collect authority-in-charge for adoption of accounting system on the cash basis.
A profit-seeking enterprise not organized as a company may change its adopted accounting system but shall report the change to the local collection authority-in-charge three months prior to commencement of the next fiscal year.