What are the Penalties for Polygamy?

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  • Written By: Christopher John
  • Edited By: R. Halprin
  • Last Modified Date: 28 January 2020
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Polygamy is having more than one spouse at the same time. Bigamy is a form of polygamy and it involves one person getting legally married to multiple partners. Although polygamy is not illegal everywhere, many jurisdictions prohibit polygamy and bigamy and others ban only bigamy. Penalties for these offenses include fines and/or prison time. The severity of punishment depends on the jurisdiction.

Frequently, when polygamy occurs, it is a man that has multiple wives, i.e., polygyny. In some instances, a woman may have multiple husbands; this is called polyandry. Usually everyone involved in a polygamous relationship lives in the same household. Hence, the spouses are all aware that they are in a polygamous relationship.

Bigamy, however, is slightly different. A bigamist is a person who gets legally married to multiple partners without their knowledge. In others words, the persons married to a bigamist are unaware that their spouse has multiple marriages. A bigamist often maintains a home for each spouse in a different city to keep the marriages secret.

In the U.S., for example, the severity of punishment for polygamy and/or bigamy varies dramatically. Some jurisdictions classify these offenses as misdemeanors while others classify them as felonies. Fines range typically from $500 U.S. Dollars (USD) to $10,000 USD. Prison time in general may range from six months to nine years. Each jurisdiction may establish whatever penalties it deems appropriate, however.


In some jurisdictions, a good faith belief that a person obtained a legal divorce or an annulment is a valid defense against a charge of bigamy or polygamy. An annulment means that a court declared a marriage as invalid from its onset. A person’s ignorance of the law or a misunderstanding of the law is not a defense. U.S. courts also reject, as a defense, a religious belief that a particular faith approves of multiple spouses. In other words, freedom of religion cannot protect a polygamist from criminal prosecution.

Some jurisdictions that criminalize polygamy do not enforce the law or make minimal efforts at enforcement. For instance, in the U.S., Utah often failed to enforce its polygamy laws. Critics claimed it was due to the state’s large Mormon population that once believed that God approved of polygamy or plural marriages. Eventually, the Mormon Church renounced the practice. Nevertheless, some Mormons in the western U.S. still engage in polygamous relationships.

Polygamists in the U.S. complain that the government is violating their religious freedom and their right to privacy under the U.S. Constitution. They point out that the government does not prosecute a person for having multiple sex partners, having children with multiple partners, or living in the same place with multiple partners. Yet the government may prosecute a person for claiming the benefit of marriage to multiple partners. Polygamists believe this is unfair.


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Post 7

If you can sleep with as many women as you want, and have multiple girlfriends or boyfriends, and nothing wrong with that, and if men can marry men and women can marry women, then what is wrong about 3 or 4 all adults agreeing on that? Nothing wrong as long as everyone is happy. It is a violation of our freedom and encourages people to just screw around and go without any obligations or legal responsibilities. Marriage is looked at with respect, whether 2, or 3, or 1, what difference does it makes

Post 6

Polygamy is not good. Order is good.

Post 5

This is disgusting. Honestly. I am in an open wedding, and someday, would like to be in a polygamist relationship. The fact that it is criminal, honestly, is unconstitutional.

Post 3

@Pippinwhite -- I think you're right. It won't be long at all. The reality shows will spring up right and left and will be called "Sister Wives -- the Breakup."

I think most people are smart enough not to try it in states where it is clearly illegal, but it's one of those things where someone has to report a family -- probably a disgruntled ex. I'd say most states don't do much to enforce any polygamy laws on the books, unless someone files a specific complaint. Police officers have more urgent cases to pursue besides polygamists, especially if all the members are consenting adults. If you've got a situation like Warren Jeffs, where 11-year-old girls are involved, then they are far more likely to act.

Post 2

I have a strong feeling polygamy will not be illegal in a few years. And honestly, if the states allow same sex marriage on the premise that people who love each other should be able to marry, why not allow polygamy? I see it happening in 10 years or less.

Personally, I think it's going to be a legal nightmare, because there will be more divorces, and how much child support and/or alimony can one person afford to pay? You'd almost have to have an ironclad prenuptial agreement that spells out the conditions if there is a divorce. If I were inclined to be part of a polygamous marriage, there's no way I'd do it without a very specific prenup.

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