Incestuous marriage: An annulment may be granted if the marriage was between close blood relatives, such as siblings, half-siblings, or parents and children.

Bigamous marriage: If one party was already married to another living spouse, the subsequent marriage may be annulled.

Underage marriage: If one or both parties were under the age of 18 at the time of the marriage and there was not proper parental consent or court approval, the marriage may be annulled.

Married to Someone Believed to be Dead: One spouse was already married at the time of the current marriage, believing the previous spouse was dead or had been absent for at least 5 years without any sign of life. The marriage can be annulled if the previously thought dead or absent spouse is discovered to be alive.

Unsound mind: If one party lacked the mental capacity to understand the nature of the marriage or consent to it, the marriage may be annulled.

Fraud or misrepresentation: An annulment may be granted if one party entered into the marriage based on fraudulent misrepresentation or concealment of important facts, such as impotence, pregnancy by another person, or undisclosed criminal history.

Forced into the marriage: This occurs when one party is coerced into the marriage under the threat of revealing past mistakes or secrets if they refuse to marry. This can constitute a valid reason for seeking an annulment.