What is required of a woman who has not paid the zakat on her gold for the past two years and wishes to pay it in the upcoming Ramadan, and how is that calculated?

Gold prepared for permissible use does not have zakat due on it, according to the majority of scholars, though it is more cautious to pay zakat on it if it reaches the nisab. As for gold prepared for saving or hoarding, zakat is obligatory on it upon the completion of a hawl (lunar year) and its reaching the nisab. If you have been negligent in paying zakat for a period, you must repent, because delaying zakat after it becomes due is not permissible.