Polygamy and civil polygamous marriages are legal in Bangladesh, though the practice is rapidly declining. An estimated 10% of Bangladeshi men are in polygamous marriage; much lower than the average rate found in other nations that permit polygamy. Certain cities have also placed hefty taxes on the practice of polygamy, with the tax increasing per each new wife the man takes. A Bangladeshi Muslim man can marry up to four wives at the same time subject to the permission of his existing wives. There is no known limit for the number of wives a Hindu man can take in Bangladesh.