What is the ruling on working as an accountant in a company that sells black dye and has tax irregularities, and is it better to leave, despite there being an alternative to the tax problem and the availability of a decent livelihood?

For the permissibility of working in the sale of cosmetics, the products must be free of religiously prohibited ingredients, and there should be no images of unveiled women on the packaging. It is also a condition that these products not be sold to those who use them for ostentatious display (tabarruj). If the predominant use is prohibited, then it is impermissible to sell them except to someone whose permissible use is known. If the company sells to shops that use these products for adorning unveiled women, then it is impermissible to continue in this work. It is advised to convince your father of its impermissibility and to seek permissible work. As for the defect in the tax system, if these taxes are impermissible to impose, then there is no harm in evading their payment.