Under Indiana law, unmarried mothers automatically receive sole legal and physical custody of their children at birth under Indiana Code § 31-14-13-1. Unmarried fathers have zero custody rights until paternity is legally established through either a signed paternity affidavit or court order. Once paternity is confirmed, fathers gain equal standing to petition for custody under the same best interest factors that apply in divorce cases. Approximately 80% of Indiana custody cases result in joint legal custody arrangements where both parents share decision-making authority.
Key Facts: Custody for Unmarried Parents in Indiana
| Factor | Details |
|---|---|
| Default Custody | Mother has sole legal and physical custody at birth |
| Paternity Filing Fee | $157-$196 depending on county (as of May 2026) |
| Service of Process | Additional $28-$75 |
| Residency Requirement | Child, mother, or alleged father must reside in Indiana |
| Time Limit to File | Generally 2 years from birth; child can file until age 20 |
| Genetic Testing | $150-$500 if court-ordered |
| Best Interest Factors | 8 statutory factors under IC 31-14-13-2 |
| Child Preference Weight | Increased consideration at age 14 |
Establishing Paternity in Indiana: The Foundation for Father Rights
Unmarried fathers in Indiana must establish paternity before they can exercise any custody or visitation rights under Indiana law. Without legal paternity, a biological father has no standing to seek custody, request parenting time, or make decisions about the child's education, healthcare, or religious upbringing. Indiana recognizes two primary methods for establishing paternity: voluntary acknowledgment through a paternity affidavit and judicial determination through a court proceeding under IC 31-14.
Paternity Affidavit: The Voluntary Path
The paternity affidavit process allows cooperating parents to establish legal fatherhood without court intervention. Both parents sign State Form 44780 (the Indiana Paternity Affidavit) declaring under penalty of perjury that the man is the biological father. Hospitals offer this form within 72 hours of birth when the parents are amicable. The affidavit becomes effective immediately upon execution by both parties and the filing with the Indiana State Department of Health.
A critical section of the paternity affidavit allows parents to agree to joint legal custody. If both parents initial this section, they share decision-making authority for major decisions concerning education, healthcare, and religious training. If they do not check this box, the mother retains sole legal custody even after paternity is established. The father gains only the right to reasonable parenting time under the Indiana Parenting Time Guidelines.
Either party may rescind a paternity affidavit within 60 days of signing by filing an action requesting genetic testing. After 60 days, rescission is only permitted if the court finds fraud, duress, or material mistake of fact existed when the affidavit was executed.
Court-Ordered Paternity: The Contested Path
When parents cannot agree on paternity or when a father needs enforceable custody rights beyond what the affidavit provides, a paternity action must be filed in court. Under IC 31-14-5, either parent, the child (through age 20), the Indiana Department of Child Services, or the county prosecuting attorney may file a Verified Petition to Establish Paternity in the county where the child, mother, or alleged father resides.
Filing fees range from $157 in most Indiana counties to $196 in certain jurisdictions like Greene County. Additional costs include $28 for sheriff service and $10 per additional defendant. Fee waivers are available under IC 33-37-3-2 for households earning at or below 125% of federal poverty guidelines (approximately $19,000 for a single person or $26,000 for a two-person household in 2026).
Once filed, the court sets a hearing where parties may acknowledge paternity, request genetic testing, or present evidence. Genetic testing by an accredited laboratory costs $150-$500 and must show at least 99% probability of paternity. Home paternity tests are inadmissible for legal purposes.
Best Interest Factors: How Indiana Courts Decide Custody
Indiana courts determine custody for children of unmarried parents using the identical eight best interest factors applied in divorce cases. Under IC 31-14-13-2, there is no presumption favoring either parent based on gender, and courts must consider all relevant circumstances before awarding custody. The statute lists eight specific factors that judges weigh when making custody determinations.
The Eight Statutory Factors
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The age and sex of the child: Courts consider developmental needs that may vary by age, though gender alone does not determine placement preferences.
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The wishes of the child's parents: Each parent's proposed custody arrangement and willingness to support the child's relationship with the other parent carries significant weight.
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The wishes of the child: Children age 14 and older receive increased consideration of their preferences under Indiana law, though the child's wishes are never the sole determining factor.
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The interaction and interrelationship of the child: Courts examine bonds with parents, siblings, and other significant individuals like grandparents or stepparents.
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The child's adjustment to home, school, and community: Stability in current living arrangements, school performance, and community connections influence custody decisions.
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The mental and physical health of all individuals: Documented mental health conditions, substance abuse issues, or physical limitations affecting parenting capacity are evaluated.
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Evidence of a pattern of domestic or family violence: Courts give significant weight to domestic violence findings, which may result in supervised parenting time or denial of custody to the perpetrator.
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De facto custodian status: When a non-parent has served as the child's primary caregiver for at least 6 months (for children under 3) or 1 year (for children 3 and older), additional factors under IC 31-14-13-2.5 must be considered.
Types of Custody Arrangements in Indiana
Indiana law recognizes four distinct custody arrangements that courts may order following establishment of paternity. Understanding these categories helps unmarried parents anticipate possible outcomes and develop realistic expectations for their custody proceedings.
Legal Custody vs. Physical Custody
| Custody Type | Definition | Decision Authority |
|---|---|---|
| Sole Legal Custody | One parent has exclusive authority | Education, healthcare, religion, extracurriculars |
| Joint Legal Custody | Both parents share authority | Major decisions require mutual agreement |
| Sole Physical Custody | Child resides primarily with one parent | Daily care, routine decisions |
| Joint Physical Custody | Child splits time substantially | Both homes considered primary residence |
Joint legal custody is the most common outcome in Indiana, awarded in approximately 80% of custody cases. This arrangement requires both parents to communicate and agree on major decisions while allowing the residential parent to handle day-to-day matters. Joint physical custody, where children spend roughly equal time with each parent, occurs less frequently and typically requires parents who live near each other and demonstrate ability to cooperate.
Primary Physical Custody with Parenting Time
The majority of Indiana paternity cases result in one parent receiving primary physical custody while the other receives parenting time according to the Indiana Parenting Time Guidelines. These guidelines establish minimum visitation standards: alternating weekends (Friday 6 PM to Sunday 6 PM), one midweek evening (up to 4 hours), alternating holidays, and up to half of summer vacation for children age 5 and older. The guidelines represent the floor, not the ceiling, and courts may order additional time when in the child's best interest.
Indiana Parenting Time Guidelines: What Unmarried Parents Should Know
The Indiana Parenting Time Guidelines govern visitation schedules for non-custodial parents in paternity cases. These guidelines, adopted by the Indiana Supreme Court and effective since 2001 with amendments through 2022, establish minimum parenting time standards that courts apply when parents cannot reach their own agreement. The guidelines are available at rules.incourts.gov.
Standard Schedule by Child Age
| Age Group | Regular Parenting Time | Notes |
|---|---|---|
| Infants (0-12 months) | Short, frequent visits; no more than 2 days apart | Overnight discouraged for very young infants |
| Toddlers (1-3 years) | Gradually increasing overnight stays | Transition to standard schedule by age 3 |
| Children (3-5 years) | Alternating weekends, midweek visits | Up to 4 nonconsecutive weeks summer |
| Children (5+ years) | Full standard schedule | Half of summer vacation allowed |
| Teenagers (13-17) | Flexible, evolving schedule | Child's activities and preferences considered |
For children age 3 and older, the standard schedule includes alternating weekends from Friday at 6 PM through Sunday at 6 PM, one midweek evening of up to 4 hours with return by 9 PM, alternating major holidays, and extended summer time. The non-custodial parent must provide written notice of summer parenting time selections by April 1 of each year.
Parenting Time Credit for Child Support
Indiana's child support guidelines provide credit for parenting time when the non-custodial parent exercises at least 52 overnights per year (approximately 14% of the time). This threshold is among the lowest in the United States. The parenting time credit reduces the child support obligation proportionally, recognizing that the non-custodial parent incurs direct expenses during parenting time.
Child Support Obligations for Unmarried Parents
Child support in Indiana paternity cases follows the Income Shares Model, which calculates support based on combined parental income and the principle that children should receive the same proportion of parental income they would have received if parents lived together. The Indiana Supreme Court publishes Child Support Guidelines that establish presumptive support amounts based on income levels and number of children.
How Child Support is Calculated
Indiana uses a six-step calculation process:
- Determine each parent's weekly gross income from all sources
- Apply statutory adjustments (prior support orders, mandatory union dues, self-employment taxes)
- Add both parents' adjusted incomes together
- Calculate each parent's proportional share (e.g., 60%/40%)
- Locate the basic support obligation on the guidelines schedule
- Add healthcare premiums and work-related childcare costs, then allocate proportionally
The Indiana Judicial Branch provides an online calculator at in.gov/courts/services/child-support-calculator to estimate weekly support obligations.
Child support in paternity cases becomes effective retroactively to the date the paternity action was filed. Courts may also order support for pregnancy and childbirth expenses. Combined temporary maintenance and child support cannot exceed 50% of the obligor's weekly adjusted income to ensure the paying parent can meet basic living expenses.
Modifying Custody Orders After Paternity Establishment
Custody and parenting time orders entered in paternity cases may be modified when circumstances substantially change. Under IC 31-14-13-6, either parent may petition the court to modify custody if they can demonstrate a substantial change in circumstances affecting the child's best interest. The party seeking modification bears the burden of proving both the change and that modification serves the child's welfare.
Common Grounds for Modification
Courts regularly consider modification requests based on: relocation of a parent more than 100 miles from the current residence, documented substance abuse or mental health concerns, the child's expressed preferences (particularly after age 14), significant changes in work schedules affecting parenting time, domestic violence incidents, and failure of the current arrangement to meet the child's needs.
Protecting Your Rights as an Unmarried Parent
Unmarried parents face unique legal challenges that married parents navigating divorce do not encounter. The most significant difference is that fathers must establish paternity before they have any enforceable rights, while mothers must take affirmative steps to secure child support and potentially share custody. Both parents benefit from understanding their legal position and taking proactive steps to protect their parental relationship.
For Unmarried Fathers
The most critical step for unmarried fathers is establishing legal paternity as soon as possible. Signing a paternity affidavit at the hospital provides immediate legal recognition but does not grant custody rights unless joint legal custody is elected on the form. To obtain enforceable custody or parenting time beyond the Indiana Parenting Time Guidelines minimums, fathers must file a paternity action and request specific court orders.
Fathers should document their involvement in the child's life from birth, including attendance at medical appointments, participation in childcare, financial contributions, and communication records. This evidence supports custody requests by demonstrating an established parent-child relationship.
For Unmarried Mothers
Unmarried mothers automatically hold sole custody under Indiana law, but this position may change once paternity is established. Mothers should understand that refusing to allow paternity establishment can backfire; courts view obstruction of the father-child relationship negatively when determining best interests. Cooperating with reasonable paternity acknowledgment while documenting any concerns about the father's fitness serves mothers better than blanket refusal.
Mothers seeking child support should work with the county child support office or file their own paternity action if the father has not acknowledged paternity. The prosecuting attorney will file paternity actions at no charge when requested and will represent the child's interest in obtaining support.