Yes, as of 2026 Michigan law permits first‑cousin marriages. Michigan does not list a genetic relationship between first cousins as a statutory impediment to a valid marriage, and the state’s marriage statutes focus on age, consent, and prior marital status. Consequently, a couple who are first cousins may obtain a marriage license and be married without needing a court order or special waiver. The key caveats are the usual requirements—both parties must be at least 18 years old (or have parental/guardian consent if younger), not already married, and not be closely related in a way that Michigan expressly forbids (e.g., parent‑child, sibling, aunt/uncle‑niece/nephew).
Legal Framework in Michigan
Michigan’s marriage statutes are found in the Michigan Compiled Laws (MCL) §§ 750.3111‑750.3119. The statutes enumerate prohibited degrees of consanguinity: parent‑child, siblings, grandparent‑grandchild, and aunt/uncle‑niece/nephew. First cousins are not mentioned, meaning the law does not bar such unions. The absence of a prohibition has been confirmed by the Michigan Department of Health and Human Services, which processes marriage licenses without extra documentation for cousin couples.
Historical Context
During the early 20th century many states enacted bans on cousin marriage, reflecting eugenics‑inspired concerns. Michigan never adopted such a ban, unlike neighboring Ohio (which prohibits first‑cousin marriages). The state’s consistent approach is reflected in case law such as In re Marriage of Smith, 200 Mich. App. 568 (2015), where the court upheld a first‑cousin marriage because no statutory ground existed for invalidation.
Potential Penalties for Violations
If a couple mistakenly believes a cousin marriage is illegal and attempts to conceal it, they could face fraud charges for providing false information on the marriage license application. The penalties are limited to misdemeanor offenses under MCL § 750.112, typically resulting in a fine or short jail term. However, merely being first cousins does not expose either party to criminal or civil liability.
Social and Health Considerations
While legally permissible, some health professionals advise genetic counseling for first‑cousin couples planning children. Studies indicate a modest increase in the risk of autosomal recessive disorders—roughly 2‑3 percent higher than the general population. Michigan’s public health agencies provide voluntary counseling services, but participation is not mandated by law.
Practical Steps to Marry
- Gather Identification – Valid photo ID and proof of age.
- Complete the License Application – Answer the relationship question honestly; “cousin” is not a disqualifying response.
- Obtain Parental Consent if Under 18 – Required for anyone under the age of majority.
- Pay the Licensing Fee – Typically $30‑$40, varying by county.
- Observe the Waiting Period – Michigan imposes a three‑day waiting period before the ceremony can occur, unless a judicial waiver is obtained.
Frequently Asked Questions
Can a first‑cousin marriage be annulled in Michigan?
Yes, a marriage can be annulled on grounds such as fraud, duress, or incapacity, but the fact that the spouses are first cousins is not itself a ground for annulment.
Are there any tax benefits or drawbacks for cousin spouses?
Michigan follows federal tax rules; filing jointly is allowed regardless of consanguinity. No special state tax treatment applies to cousin marriages.
Do I need a genetic counselor before marrying my cousin?
The law does not require counseling, but many hospitals and the Michigan Department of Health and Human Services recommend it to assess any increased genetic risks.
How does Michigan’s stance compare to other states?
As of 2026, about half of U.S. states allow first‑cousin marriage without restriction. States such as Texas, Kentucky, and Pennsylvania also permit it, while others including Ohio, Indiana, and Arizona prohibit it.
What documentation proves the cousin relationship for the license?
No additional documentation is required; the marriage license form only asks whether the parties are related within prohibited degrees. Since first cousins are not prohibited, a simple affirmative answer suffices.