The different types of adoption in the United States fall into six main paths: domestic agency, independent, foster care, international, kinship or stepparent, and adult adoption. Each one has its own eligibility rules, costs, and timelines, and the right fit depends on where the child is, who they are to you already, and how much structure you want around the process. Picking the wrong route can mean months of avoidable delay or thousands of dollars in unexpected expenses.
Domestic Agency Adoption
Domestic agency adoption places a child with a new family through a private or state-licensed organization operating within the United States. The agency screens prospective parents, counsels birth parents, facilitates the match, and moves the paperwork through the courts. That centralized management is the main advantage, and it’s also why agency adoption is one of the more expensive domestic routes. Total costs commonly run between $25,000 and $60,000.
Every agency adoption begins with a home study. A licensed social worker reviews criminal background checks, financial records, and the physical safety of the home, then writes a report recommending or declining the placement. Courts require the home study before they’ll approve a final adoption decree. Once approved, prospective parents create a profile that birth parents review when deciding where to place their child. After a match, birth parents sign formal relinquishment documents under oath, surrendering their parental rights subject to court oversight.
Between placement and finalization, most states require one or more post-placement visits by a social worker. That window typically runs three to nine months, though it can stretch longer depending on the case.1AdoptUSKids. Finalizing an Adoption
Agency placements are categorized as open or closed depending on how much contact the families maintain. Open arrangements share identifying information and may involve ongoing letters, photos, or visits. Closed arrangements seal all identifying records. Open is far more common today; by some estimates, only about five percent of modern domestic adoptions are fully closed. Whether an open adoption agreement is legally enforceable depends on state law, and many jurisdictions treat these agreements as voluntary rather than binding.
Independent Adoption
In an independent adoption, birth parents place their child directly with the adoptive family without an agency as intermediary. An attorney typically manages the process: drafting the adoption petition, preparing consent forms, and keeping the arrangement compliant with the state’s private-placement rules. Both families have more direct involvement from the start, but they also carry responsibilities an agency would normally handle.
Courts examine independent adoptions closely to confirm that no improper payments changed hands. Adoptive parents routinely cover the birth mother’s reasonable medical and legal expenses, but every dollar has to be disclosed to the court for approval. Any payment that looks like compensation for the child itself, rather than reimbursement for legitimate costs, can derail the proceeding.
The biggest risk is the window during which birth parents can change their mind. Most states prohibit a birth mother from signing a valid consent until at least 48 to 72 hours after delivery. From there, revocation periods vary dramatically: some states treat a properly witnessed consent as immediately irrevocable, while others give birth parents up to 30 or even 45 days to revoke. Missing these timelines or failing to follow the state’s exact execution requirements can unravel a placement everyone thought was settled.
Foster Care Adoption
Children in foster care become available for adoption only after a court terminates the biological parents’ rights, which happens when the state shows that reunification isn’t safe or feasible. Public child welfare agencies manage these cases. The children waiting for placement skew older, frequently include sibling groups, and often have physical or emotional needs that require extra support. This is where most of the children legally free for adoption in the United States are found, and it’s also the least expensive route.
Federal law requires every state to offer adoption assistance agreements for children with special needs adopted out of foster care.2Office of the Law Revision Counsel. 42 USC 673 – Adoption Assistance Program These agreements typically include monthly subsidy payments calibrated to the child’s needs and Medicaid coverage that continues regardless of the family’s income. States that have extended foster care to older youth must continue adoption assistance past age 18 for eligible young adults, potentially through 21. Many states also reimburse one-time legal costs, so out-of-pocket expense is often minimal or zero.
Prospective parents must complete pre-service training covering the backgrounds of children in state custody, trauma-informed parenting, and strategies for integrating a child who may have experienced neglect or abuse.3AdoptUSKids. Training to Become a Foster Parent or to Adopt Programs typically run four to ten sessions. After finalization, the court issues a new birth certificate listing the adoptive parents, and the child gains the same legal status as a biological child.
International Adoption
Adopting a child from another country layers federal immigration requirements on top of the usual adoption process. Families should expect to spend roughly $15,000 to $38,000 depending on the country, with some programs (particularly South Korea) running higher. Two separate federal frameworks apply depending on whether the child’s home country has ratified the Hague Convention on Intercountry Adoption.
Hague Convention Countries
The Hague Convention requires sending and receiving countries to establish a central authority responsible for overseeing intercountry adoptions and preventing trafficking or improper financial gain.4HCCH. Convention on Protection of Children and Co-operation in Respect of Intercountry Adoption – Full Text In the United States, the Intercountry Adoption Act of 2000 implements those obligations by requiring any agency providing adoption services in Convention cases to be federally accredited.5Office of the Law Revision Counsel. 42 USC Chapter 143 – Intercountry Adoptions Families file Form I-800A with USCIS to establish eligibility and suitability before matching with a child.6U.S. Citizenship and Immigration Services. I-800A, Application for Determination of Suitability to Adopt a Child from a Convention Country
Non-Hague Countries
When the child’s country hasn’t ratified the Hague Convention, families file Form I-600A, which triggers a similar USCIS suitability review but follows the older “orphan” process rather than the Convention framework.7U.S. Citizenship and Immigration Services. I-600A, Application for Advance Processing of an Orphan Petition Since 2014, the Universal Accreditation Act has required agencies handling non-Hague cases to meet the same accreditation standards as those handling Convention adoptions.8U.S. Citizenship and Immigration Services. The Universal Accreditation Act
Citizenship and Re-Adoption
Under the Child Citizenship Act, a child adopted internationally who enters the United States on certain immigrant visa categories automatically acquires U.S. citizenship on admission, provided the child is under 18 and in the legal and physical custody of a U.S. citizen parent.9U.S. Citizenship and Immigration Services. Automatic Acquisition of Citizenship after Birth (INA 320) Even so, many families complete a re-adoption in their home state court to ensure the foreign decree is fully recognized domestically and to obtain a state-issued birth certificate.
Kinship and Stepparent Adoption
When a relative or stepparent already has a caregiving relationship with a child, adoption formalizes what’s already happening on the ground. A grandparent raising a grandchild whose parents have died, an aunt who stepped in after a neglect finding, or a stepparent who has been parenting alongside a biological spouse for years can all petition to become the child’s legal parent. These cases tend to move faster and cost far less than other routes because courts recognize an established bond.
The biggest legal hurdle is terminating the other biological parent’s rights. That can happen voluntarily through a signed consent, or involuntarily if the court finds grounds like abandonment or long-term failure to support the child. Many states simplify procedure in these cases, and a significant number waive or shorten the home study entirely for stepparent and kinship petitioners. Total cost typically falls between $1,500 and $3,500, mostly court filing fees and attorney time.
Once finalized, the adopted child gains all the legal rights of a biological child, including inheritance from the adoptive parent and through the adoptive parent’s family line by intestate succession. Federal funding also supports Kinship Navigator Programs in participating states, which connect relative caregivers to legal assistance, training, and community resources.10Administration for Children and Families. The Kinship Navigator Program
Adult Adoption
Adult adoption creates a legal parent-child relationship between two people who are both over 18. It’s most commonly used to formalize a bond that already exists in practice, such as a long-term stepparent relationship that was never legally completed during childhood, or a foster care connection that aged out of the system without finalization. The legal effect is the same as any other adoption: the adopted adult gains full inheritance rights from the adoptive parent and can inherit through the adoptive family’s line by intestate succession.
The process is considerably simpler than adopting a minor. No home study, no investigation into living arrangements, no post-placement visits. The core requirements are the written consent of the adult being adopted and a petition filed with the court. If the adopted adult wants to take the adoptive parent’s surname, the name change can be included in the petition and ordered as part of the final decree. Once approved, the court issues a new birth certificate reflecting the new relationship.
When a Placement Crosses State Lines
If any of these adoptions involves moving a child across state lines, both states must approve the placement under the Interstate Compact on the Placement of Children. The ICPC requires the sending state to provide notice and proof that the placement is suitable before the child physically moves.11The Council of State Governments National Center for Interstate Compacts. Interstate Compact on the Placement of Children Every U.S. state and territory has adopted the compact. In practice, ICPC approval adds weeks to the timeline, and moving a child without approval can jeopardize the entire adoption and trigger criminal penalties in some states.
Rules That Apply Across Types
Federal law prohibits any person or government entity involved in adoption or foster care from denying someone the opportunity to adopt based on the race, color, or national origin of the prospective parent or the child, or from delaying or denying a placement on those grounds. A violation is treated the same as a violation of Title VI of the Civil Rights Act of 1964.12Office of the Law Revision Counsel. 42 USC 1996b – Interethnic Adoption This rule does not override the Indian Child Welfare Act, which imposes separate placement preferences for children who are members of or eligible for membership in a federally recognized tribe.
The Federal Adoption Tax Credit
Families who adopt can claim a federal tax credit for qualified adoption expenses, including court costs, attorney fees, travel, and other direct costs. For the 2025 tax year, the maximum credit is $17,280 per eligible child; the amount is adjusted for inflation annually and may be slightly higher for 2026 returns.13Internal Revenue Service. Adoption Credit The credit begins phasing out at higher income levels and disappears entirely once modified adjusted gross income exceeds the upper threshold (roughly $299,000 for 2025). Families adopting a child with special needs from foster care qualify for the full credit amount even if their actual expenses were lower.
Separately, employees whose employers offer a qualified adoption assistance program can exclude reimbursed adoption expenses from taxable income, up to a per-child limit that tracks the credit amount. The credit and the exclusion can be used together, but not for the same expenses. For foster care families, where out-of-pocket costs are already low, the special-needs provision often means the credit works as a direct financial benefit rather than a reimbursement.