Notwithstanding the provisions of 1° to 5° of article R. 123-178, individuals placed by option or by operation of law under the simplified real tax regime provided for in article 302 septies A bis of the French General Tax Code may determine:
1° The inventory value of goods in stock by applying to the selling price of these goods at the balance sheet date an allowance corresponding to the margin applied by the company to each category of goods;
2° The inventory value of work in progress by retaining the amount of advance payments claimed before invoicing.