1. Each company in the group is required to pay the advance payments provided for in Article 1668 for the twelve-month period starting from the beginning of the financial year in respect of which this company joins the group. If the parent company’s assessment of the tax due in respect of the taxable income for that period shows that the advance payments made exceed the tax due, the excess is refunded to the parent company within the period provided for in Article 1668(2). In this case, the total tax assessment referred to in 4 bis of article 1668 is that of the parent company of this group, provided that the company that joined the group is still a member of this group at the end of the financial year. (1)
2. When a company ceases to be a member of the group, the advance payments due by it for the twelve-month period commencing at the beginning of the financial year in respect of which the company is no longer a member of the group are paid on behalf of that company by the parent company. 3. (Not applicable).