(a) The value of the capital used by any individual or firm, not incorporated, in any trade or business taxable by law, shall be ascertained in the following manner: The owner, agent or chief accountant of every trade or business, except the business of agriculture, carried on in any county of the state shall annually, on or after the assessment date and on or before September 1, make a written report to the assessor, verified by his or her affidavit, showing the following matter and things determined as of the assessment date:
(1) The amount, the true and actual value and classification of all tangible personal property used in connection with the trade or business, other than that regularly kept for sale therein, including chattels real and personal;