Consent to Adoption in Idaho

Part of my Idaho Adoption Overview.

By Ronald W. Brilliant, Attorney at Law · Licensed in Idaho, Nevada & California · Last reviewed: September 2026 against the Idaho Code as posted by the Idaho Legislature (July 1, 2026)

In This TopicIdaho AdoptionTopic 2 of 6: Consent to Adoption

Consent is a central part of Idaho adoption law. The Idaho Code lists whose consent is required to adopt a child or an adult, how a consent must be signed, and when consent is not needed at all (Idaho Code § 16-1504). These rules matter to birth parents, adoptive parents, guardians, and anyone who may claim to be a child’s father.

Whose Consent Is Required to Adopt a Child

Consent to the adoption of a child is required from each of the following, where they apply (Idaho Code § 16-1504(1)):

• The adoptee (the person being adopted), if more than 12 years old, unless the adoptee lacks the mental capacity to consent (§ 16-1504(1)(a));
• Both parents, or the surviving parent, of an adoptee conceived or born within a marriage (§ 16-1504(1)(b));
• The mother of an adoptee born outside of marriage (§ 16-1504(1)(c));
• Any biological parent who was adjudicated by a court to be the child’s biological father before the mother signed her consent (§ 16-1504(1)(d));
• An unmarried biological father, but only if the requirements of section 16-1504(3)(a) or (b) have been proven (§ 16-1504(1)(e));
• Any legally appointed custodian or guardian of the adoptee (§ 16-1504(1)(f));
• The adoptee’s spouse, if any (§ 16-1504(1)(g));
• An unmarried biological father who has filed a voluntary acknowledgment of paternity with the vital statistics unit of the department of health and welfare under section 7-1106 (§ 16-1504(1)(h)); and
• The father of an illegitimate child who has adopted the child by acknowledgment (§ 16-1504(1)(i)).

Separately, a married person who is not lawfully separated cannot adopt without the consent of his or her spouse, if that spouse is capable of giving consent (Idaho Code § 16-1503). See Who Can Adopt in Idaho.

Whose Consent Is Required to Adopt an Adult

Consent to the adoption of an adult is required from (Idaho Code § 16-1504(2)):

• The adoptee, or the guardian or conservator of an incapacitated adoptee if one has been appointed; and
• The adoptee’s spouse, if any.

How Consent Is Given

Anyone whose consent is required must sign it in writing, in a form consistent with section 16-2005(5) (Idaho Code § 16-1506(3)). Filing the consent in the court where the adoption is pending counts as a sufficient appearance by that person (§ 16-1506(3)).

Section 16-2005(5) requires that consents under Chapter 20 be witnessed by a district judge or magistrate of a district court, or an equivalent judicial officer of the state, where the person consenting resides or is present (Idaho Code § 16-2005(5)). The statute sets out a form in which the parent gives full and free consent to the complete and absolute termination of parental rights, including inheritance rights, and waives a hearing (§ 16-2005(5)).

The court shall accept a consent signed in another state if it is witnessed by a magistrate or district judge of that state, or if the court receives an affidavit or certificate from a court of comparable jurisdiction, or is satisfied by other showing, that it was signed in accordance with that state’s laws (Idaho Code § 16-2005(6)).

Minor Parents

A parent who is a minor has the power to consent to the adoption of his or her child, and that consent has the same force and effect as a consent signed by an adult parent (Idaho Code § 16-1504(7)). A minor parent who has signed a consent cannot revoke it upon reaching the age of majority or otherwise becoming emancipated (§ 16-1504(7)).

Agency Consent

If a voluntary child placement agency, licensed by the state where it does business, is authorized under that state’s laws to place a child for adoption and to consent to the adoption, its consent is valid in an Idaho proceeding and no further consents or notices are required (Idaho Code § 16-1504(8)).

When Consent Is Not Required

• Parental rights already terminated. No consent is required of, and no notice given to, a person whose parental relationship to the child was terminated under Chapter 16 or Chapter 20 of Title 16, or by a court of a sister state under like proceedings or other manner authorized by that state’s laws (Idaho Code § 16-1504(8)).
• Termination during the adoption. An unmarried biological father whose consent would otherwise be required may still lose his right to consent if the court terminates his rights under the termination of parent and child relationship act, sections 16-2001 through 16-2015 (Idaho Code § 16-1504(4)). See Termination of Parental Rights in Idaho.
• Foreign-born children. No consent is required from the biological parents if the child was granted permission by the U.S. Department of State or Department of Homeland Security to enter the United States for adoption, or for humanitarian reasons relating to adoption by U.S. citizens (Idaho Code § 16-1514(3)).
• Unmarried fathers who do not comply. See the next section (Idaho Code § 16-1504(6)).

Unmarried Biological Fathers

An “unmarried biological father” is the biological father of a child who was not married to the child’s mother when the child was conceived or born (Idaho Code § 16-2002(15)). His consent is necessary only if he has strictly complied with all requirements of section 16-1504 (Idaho Code § 16-1504(3)). Chapter 15 states that he has the primary responsibility to protect his rights (Idaho Code § 16-1501A(3)(d)).

Child Placed More Than Six Months After Birth

The father must have developed a substantial relationship with the child, taken some measure of responsibility for the child and the child’s future, and shown a full commitment to parenthood through financial support of the child, of a fair and reasonable sum according to his ability (Idaho Code § 16-1504(3)(a)(i)). He must also have either visited the child at least monthly when physically and financially able, or, when unable to visit, had regular communication with the child or the child’s caregiver (§ 16-1504(3)(a)(i)). The support, visits, and communication are required when he was not prevented from providing them by the person or authorized agency having lawful custody of the child (§ 16-1504(3)(a)(i)).

His subjective intent, without evidence of these acts, does not prevent a finding that he failed to meet the requirements (§ 16-1504(3)(a)(ii)). A father who openly lived with the child for six months within the one-year period after birth and immediately before placement, and openly held himself out as the father during that time, is deemed to have met all of these requirements (§ 16-1504(3)(a)(iii)).

Child Placed Under Six Months of Age

The father must complete all of the following before the earliest of these events: the filing of any proceeding to terminate the birth mother’s parental rights, the filing of any proceeding to adopt the child, or the mother’s signing of a consent to termination under section 16-2005(5) (Idaho Code § 16-1504(3)(b)):

1. File proceedings to establish paternity under section 7-1111, along with a sworn affidavit that he is fully able and willing to have full custody of the child, stating his plans for the child’s care, and agreeing to a child support order and to pay pregnancy and birth expenses (§ 16-1504(3)(b)(i));
2. File notice of the paternity proceedings with the vital statistics unit of the department of health and welfare under section 16-1513 (§ 16-1504(3)(b)(ii)); and
3. If he actually knew of the pregnancy, pay a fair and reasonable amount of the pregnancy and birth expenses, according to his means, when not prevented by the person or agency having lawful custody of the child (§ 16-1504(3)(b)(iii)).

A paternity proceeding may be filed before the child is born, but it must be filed before the earliest of the same three events (Idaho Code § 16-1504(10)).

The Narrow Exception

If a father did not fully and strictly comply, his consent is not required unless he proves all of the following by clear and convincing evidence (Idaho Code § 16-1504(6)):

• It was not possible for him to start paternity proceedings and file notice with vital statistics before the earliest of the three events described above (§ 16-1504(6)(a));
• His failure to file on time was through no fault of his own (§ 16-1504(6)(b)); and
• He filed the notice and the paternity proceedings within 10 days after the child’s birth (§ 16-1504(6)(c)).

Lack of knowledge of the pregnancy is not an acceptable reason for failing to file on time (§ 16-1504(6)(c)). Without this showing, a father who does not fully and strictly comply is deemed to have waived and surrendered any right in relation to the child, including the right to notice of the adoption, and his consent is not required (§ 16-1504(6)).

Fathers Living in Another State

An unmarried biological father who lives in another state may contest an adoption before it is finalized if all of these are met: he resides and has resided in another state where the mother was also located or resided; she left without telling him she could be found in Idaho; he tried through every reasonable means to find her but does not know or have reason to know she is in Idaho; and he complied with the most stringent and complete requirements of the state where she was, to protect his parental rights in adoption cases (Idaho Code § 16-1504(9)).

Notice and the Mother’s Privacy

By engaging in a sexual relationship with a woman, an unmarried biological father is deemed to be on notice that a pregnancy and adoption proceeding may occur, and he is entitled to actual notice of a birth or adoption only as section 16-1505 provides (Idaho Code § 16-1505(2)). The legislature has found that an unmarried mother has a right of privacy regarding her pregnancy and adoption plan and no legal obligation to disclose the identity of an unmarried biological father before or during an adoption proceeding (Idaho Code § 16-1501A(4)).

The Idaho Putative Father Registry

A man who is, or claims to be, the father of a child born out of wedlock may claim rights by starting paternity proceedings under section 7-1111 and filing a notice of those proceedings with the vital statistics unit of the department of health and welfare (Idaho Code § 16-1513(1)). The code calls this central registry the Idaho putative father registry (§ 16-1513(11)), and it refers to a man who files there as a putative father (§ 16-1513(9)).

Registry rule	What the Idaho Code says
Form	Filled out completely on the vital statistics form, signed by the man claiming paternity, and witnessed before a notary public (§ 16-1513(1))
Contents	His name and address, the mother’s name and last address, and the child’s birth date or the probable month and year of expected birth (§ 16-1513(2))
Timing	May be filed before birth; must be filed before any proceeding to terminate the birth mother’s parental rights is filed (§ 16-1513(2)), and it must be filed and registered before the earliest of the three events listed above (§ 16-1513(4))
Filing fee	$10 when the notice is filed; a separate reasonable fee applies to a registry search and certificate (§ 16-1513(9))
Effect of not filing	He is deemed to have waived his rights and notice, his consent is not required, he is barred from later establishing paternity, and the failure is an irrevocable implied consent, except as section 16-1504(6) provides (§ 16-1513(4))
Revoking a notice	He may revoke it at any time; after written revocation it is as if no notice was filed (§ 16-1513(6))
Effect of filing	An unrevoked notice is prima facie evidence of his paternity in a contested proceeding under chapter 11, title 7, Idaho Code, but it does not bar termination of his rights under Chapter 20 (§ 16-1513(5))
False filing	Knowingly or intentionally filing falsely as a putative father is a misdemeanor (§ 16-1513(15))

In an adoption of a child born out of wedlock where there is no showing that the father consented or waived his rights, the petitioner must file a certificate from the state registrar of vital statistics about the results of a diligent search of the registry before the final decree (Idaho Code § 16-1504(5); § 16-1513(7)). Identities of putative fathers can be released only under the procedures in chapter 1, title 74, Idaho Code (§ 16-1513(8)). Failure of any office to post the required public notice about the registry does not excuse a putative father from filing (§ 16-1513(14)).

Registering notice of paternity proceedings does not satisfy the separate requirements for claiming a child abandoned under chapter 82, title 39, Idaho Code, which has its own registry (Idaho Code § 16-1513(1)(b), (e)).

If a Birth Parent Changes Course

Chapter 15 does not set out a general rule on when a parent may withdraw a signed consent. It does address costs. If a natural parent withdraws or revokes a consent and the court, on that parent’s petition, orders the child returned to the parent, the court shall order that parent to reimburse the adoptive or prospective adoptive parents for all adoption expenses (Idaho Code § 16-1515(1)).

Those expenses include medical and legal fees and costs and other reasonable costs, such as food and clothing for the child while living with them, entered as a money judgment (§ 16-1515(1)). This applies whether or not the order of adoption has been entered (§ 16-1515(1)).

If a natural parent agrees to consent, the prospective adoptive parents start the adoption based on that agreement, and the parent then refuses to sign, the prospective adoptive parents may move for restitution in the adoption case, and the court may order reimbursement of the same kinds of expenses, or they may sue separately for damages (Idaho Code § 16-1515(2)). For this section, “prospective adoptive parents” include foster parents who started adoption proceedings, but not foster parents who are wholly or partially reimbursed by the state for the child’s care (§ 16-1515(3)).

Who must receive notice, and how objections are made, is covered in Adoption Procedure and the Decree in Idaho.

How I Can Help

I help adoptive parents identify every person whose consent or notice is required, prepare consents in the form Idaho law calls for, and obtain the putative father registry certificate before the final hearing. I also help birth parents and fathers understand what the statutes require of them and when. Request a consultation to discuss your situation.

This page provides general information about Idaho adoption and termination of parental rights, based on the Idaho Code, and is not legal advice. Court rules (including the Idaho Child Support Guidelines), regulations, and case law also affect family law matters. Every situation is different; consult an attorney about yours. Reading this page does not create an attorney-client relationship.