How to Establish Paternity in Ohio
Reviewed by DocDraft Legal Team · Ohio · Last updated 2026-09-12
In Ohio, establishing paternity means legally identifying a child's father so the child gains rights to support, custody and parenting time, health coverage, inheritance, and benefits. Unmarried parents who agree can sign an Acknowledgment of Paternity Affidavit, Form JFS 07038, at the hospital, a local health department, or a county child support enforcement agency; once properly executed and filed it has the same force and effect as a court order (Ohio Rev. Code 3111.03). Either parent may rescind it within 60 days, the window set by federal law (42 U.S.C. 666(a)(5)). Ohio's load-bearing timing rule is unusually long: under Ohio Rev. Code 3111.05, an action to determine the existence or nonexistence of the father and child relationship may not be brought later than five years after the child reaches age eighteen, which effectively means until the child turns 23. A man married to the mother when the child is born, or within 300 days after the marriage ends, is presumed the natural father, and that presumption can be rebutted only by clear and convincing evidence that includes the results of genetic testing (Ohio Rev. Code 3111.03). A county child support enforcement agency can issue an administrative order establishing paternity when genetic testing shows at least a 99 percent probability of paternity. Attorney review of your situation is available through DocDraft.
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Where are you in establishing paternity?
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What are the ways to establish paternity in Ohio?
Unmarried parents who agree can sign an Acknowledgment of Paternity Affidavit, Form JFS 07038, which once filed has the same force as a court order (Ohio Rev. Code 3111.03). If parents disagree, a county child support enforcement agency or the court can order genetic testing and establish paternity.
How long do I have to establish paternity in Ohio?
Under Ohio Rev. Code 3111.05, an action to determine the existence or nonexistence of the father and child relationship may not be brought later than five years after the child reaches age eighteen. That effectively allows action until the child turns 23.
What is the marital presumption of paternity in Ohio?
Under Ohio Rev. Code 3111.03, a man is presumed the natural father if he and the mother are or have been married and the child is born during the marriage or within 300 days after it ends. The presumption can be rebutted only by clear and convincing evidence that includes genetic testing results.
What genetic-testing result establishes paternity in Ohio?
A county child support enforcement agency can issue an administrative order establishing paternity when genetic testing shows at least a 99 percent probability that the alleged father is the natural father. Genetic testing results are also required to rebut the marital presumption of paternity.
Ohio paternity law at a glance
Ohio gives one of the longest windows to act. Under Ohio Rev. Code 3111.05, an action to determine the father and child relationship may not be brought later than five years after the child reaches age eighteen, so a case can start until the child turns 23. Unmarried parents who agree skip court by signing an Acknowledgment of Paternity Affidavit, Form JFS 07038, at a hospital, health department, or county child support enforcement agency; once filed it has the force of a court order (Ohio Rev. Code 3111.03), rescindable within the federal 60-day window. A man married to the mother at birth, or within 300 days after the marriage ends, is presumed the natural father; that presumption is rebutted only by clear and convincing evidence including genetic testing. A child support enforcement agency can issue an administrative order when genetic testing shows at least a 99 percent probability.
Establishing Ohio paternity through a child support enforcement agency
Suppose a child is born in Ohio to unmarried parents who sign nothing at the hospital. The mother later opens a case, and a county child support enforcement agency orders genetic testing. A result of at least a 99 percent probability lets the agency issue an administrative order without a court hearing. Even years later the action would be timely, because under Ohio Rev. Code 3111.05 it may be brought until five years after the child reaches age eighteen, effectively age 23. Had the parents agreed at the hospital, they could have signed an Acknowledgment of Paternity Affidavit, Form JFS 07038, with the force of a court order, rescindable within the federal 60-day window. Had the child been born to a married woman, the presumption that her husband is the natural father could be rebutted only by clear and convincing evidence including genetic testing. Attorney review is available through DocDraft.
Relevant Laws
Ohio Rev. Code 3111.05 (time to bring a paternity action)
Provides that an action to determine the existence or nonexistence of the father and child relationship may not be brought later than five years after the child reaches the age of eighteen, effectively allowing an action until the child turns 23.
Ohio Rev. Code 3111.03 (presumption of paternity and rebuttal)
Provides that a man is presumed the natural father if he and the mother are or have been married and the child is born during the marriage or within 300 days after it ends, and that the presumption can be rebutted only by clear and convincing evidence that includes the results of genetic testing.
Ohio Acknowledgment of Paternity Affidavit, Form JFS 07038
The state form that unmarried parents sign to establish paternity; when properly executed and filed it has the same force and effect as a court order and is administered through the Ohio Department of Job and Family Services and county child support enforcement agencies.
Ohio Department of Job and Family Services, Office of Child Support
Administers the paternity acknowledgment program and, through county child support enforcement agencies, can order genetic testing and issue administrative orders establishing paternity and support.
42 U.S.C. 666(a)(5) (federal 60-day rescission window)
Requires each state to provide a 60-day period after a voluntary acknowledgment of paternity is signed during which a signer may rescind it, after which it may be challenged only on the basis of fraud, duress, or material mistake of fact.
Regional Variances
Ohio paternity rules at a glance
Voluntary path and form
Unmarried parents establish paternity by signing the Acknowledgment of Paternity Affidavit, Form JFS 07038, at the hospital, a local health department, or a county child support enforcement agency. Once filed it has the force of a court order (Ohio Rev. Code 3111.03).
Rescission window
Either parent may rescind within 60 days, the window set by federal law (42 U.S.C. 666(a)(5)). After 60 days it can be challenged only for fraud, duress, or material mistake of fact.
Deadline to establish
Under Ohio Rev. Code 3111.05, an action to determine the father and child relationship may not be brought later than five years after the child reaches age eighteen, effectively age 23.
Marital presumption
A man married to the mother at birth, or within 300 days after the marriage ends, is presumed the natural father; the presumption can be rebutted only by clear and convincing evidence that includes genetic testing (Ohio Rev. Code 3111.03).
Genetic-testing threshold
A county child support enforcement agency can issue an administrative order establishing paternity when genetic testing shows at least a 99 percent probability of paternity.
Who administers it
The Ohio Department of Job and Family Services, Office of Child Support, and county child support enforcement agencies administer paternity establishment; disputed cases are decided by the court.
Suggested Compliance Checklist
Confirm whether a marital presumption applies
Before signing or filing anything days after startingDetermine whether the child was born to a married woman, which triggers Ohio's presumption that the husband is the natural father (Ohio Rev. Code 3111.03). That presumption can be rebutted only by clear and convincing evidence that includes the results of genetic testing.
Get genetic testing if biological paternity is uncertain
Before signing an affidavit days after startingBecause a signed affidavit carries the force of a court order, obtain genetic testing first if there is any doubt. A county child support enforcement agency can establish paternity administratively when testing shows at least a 99 percent probability of paternity.
Sign and file the Acknowledgment of Paternity Affidavit
At the hospital or a local office days after startingUnmarried parents who agree sign Form JFS 07038 at the hospital, a local health department, or a county agency, giving it the same force as a court order (Ohio Rev. Code 3111.03). Keep a copy. Attorney review of your paternity matter is available through DocDraft.
Track the 60-day rescission window
Within 60 days of signing days after startingIf you need to cancel a signed affidavit, do so within 60 days, the window set by federal law (42 U.S.C. 666(a)(5)). After 60 days it can be challenged only for fraud, duress, or material mistake of fact.
File a court action within the deadline if parents disagree
No later than 5 years after the child turns 18 days after startingIf parents do not agree and the matter is in court, bring an action to determine the father and child relationship no later than five years after the child reaches age eighteen (Ohio Rev. Code 3111.05). The court can order genetic testing and enter a judgment.
Keep records of the affidavit, testing, and orders
Ongoing days after startingSave copies of the affidavit, any genetic-test results, and administrative or court orders, and calendar the 60-day rescission window and the outer limit under Ohio Rev. Code 3111.05 so you do not miss a right-forfeiting date.
| Task | Description | Document | Days after starting |
|---|---|---|---|
| Confirm whether a marital presumption applies | Determine whether the child was born to a married woman, which triggers Ohio's presumption that the husband is the natural father (Ohio Rev. Code 3111.03). That presumption can be rebutted only by clear and convincing evidence that includes the results of genetic testing. | - | Before signing or filing anything |
| Get genetic testing if biological paternity is uncertain | Because a signed affidavit carries the force of a court order, obtain genetic testing first if there is any doubt. A county child support enforcement agency can establish paternity administratively when testing shows at least a 99 percent probability of paternity. | - | Before signing an affidavit |
| Sign and file the Acknowledgment of Paternity Affidavit | Unmarried parents who agree sign Form JFS 07038 at the hospital, a local health department, or a county agency, giving it the same force as a court order (Ohio Rev. Code 3111.03). Keep a copy. Attorney review of your paternity matter is available through DocDraft. | - | At the hospital or a local office |
| Track the 60-day rescission window | If you need to cancel a signed affidavit, do so within 60 days, the window set by federal law (42 U.S.C. 666(a)(5)). After 60 days it can be challenged only for fraud, duress, or material mistake of fact. | - | Within 60 days of signing |
| File a court action within the deadline if parents disagree | If parents do not agree and the matter is in court, bring an action to determine the father and child relationship no later than five years after the child reaches age eighteen (Ohio Rev. Code 3111.05). The court can order genetic testing and enter a judgment. | - | No later than 5 years after the child turns 18 |
| Keep records of the affidavit, testing, and orders | Save copies of the affidavit, any genetic-test results, and administrative or court orders, and calendar the 60-day rescission window and the outer limit under Ohio Rev. Code 3111.05 so you do not miss a right-forfeiting date. | - | Ongoing |
Frequently Asked Questions
Establishing paternity in Ohio means legally identifying a child's father so the child can receive support, custody and parenting time, health coverage, inheritance, and benefits. It can be done by signing an Acknowledgment of Paternity Affidavit or through an administrative or court determination of the father and child relationship.
Unmarried parents who agree sign an Acknowledgment of Paternity Affidavit, Form JFS 07038, which once filed has the force of a court order (Ohio Rev. Code 3111.03). If parents disagree, a county child support enforcement agency or the court can order genetic testing and establish paternity.
It is Form JFS 07038, which unmarried parents sign to establish a legal parent-child relationship without going to court. It can be completed at the hospital, a local health department, or a county child support enforcement agency, and once properly executed and filed it has the same force as a court order.
Under Ohio Rev. Code 3111.05, an action to determine the existence or nonexistence of the father and child relationship may not be brought later than five years after the child reaches age eighteen, which effectively means until the child turns 23.
Yes, within a limited window. Either parent may rescind a signed Acknowledgment of Paternity Affidavit within 60 days, the window set by federal law. After 60 days it can be challenged only on the basis of fraud, duress, or a material mistake of fact.
A man married to the mother at birth, or within 300 days before the marriage ended, is presumed the natural father (Ohio Rev. Code 3111.03). That presumption can be rebutted only by clear and convincing evidence that includes the results of genetic testing.
A DNA test is central but not automatically conclusive. A county child support enforcement agency can issue an administrative order establishing paternity when genetic testing shows at least a 99 percent probability that the alleged father is the natural father. Genetic testing results are also needed to rebut the marital presumption of paternity.
The Ohio Department of Job and Family Services, Office of Child Support, and county child support enforcement agencies administer the Acknowledgment of Paternity Affidavit and can order genetic testing and issue administrative orders. Contested cases are decided by the court, which may order genetic testing.
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