What Is Gestational Surrogacy and How Does It Work?

Gestational surrogacy is an arrangement in which a woman carries and delivers a baby for another person or couple, with no genetic connection to the child. The embryo is created through IVF using eggs and sperm from the intended parents or donors, then transferred to the surrogate’s uterus. It’s the most common form of surrogacy practiced today and differs fundamentally from traditional surrogacy, where the surrogate provides her own egg and is biologically related to the baby.

How It Differs From Traditional Surrogacy

The core distinction is genetic. In traditional surrogacy, the surrogate is artificially inseminated with the intended father’s sperm, making her both the carrier and a biological parent of the child. In gestational surrogacy, the embryo is created entirely outside the surrogate’s body in a lab, and the woman who carries the pregnancy shares no DNA with the baby. This separation of genetics from pregnancy is what makes gestational surrogacy legally and emotionally simpler for many families, though it’s medically more involved because it requires IVF.

Who Uses Gestational Surrogacy

People pursue gestational surrogacy for a wide range of reasons. Women who’ve had a hysterectomy, who have uterine abnormalities, or who face serious health risks from pregnancy may turn to a surrogate to carry a child that’s still genetically theirs. Same-sex male couples use gestational surrogacy combined with egg donation. Single men and women, people with recurrent pregnancy loss, and those who’ve had repeated IVF failures with their own pregnancies also commonly explore this path.

The Genetic Combinations

Gestational surrogacy is flexible in terms of whose DNA creates the embryo. The embryo can be made from the intended mother’s eggs and the intended father’s sperm, meaning the baby is fully genetically related to both parents. If one partner has fertility challenges, donor eggs or donor sperm can replace that contribution. In some cases, both eggs and sperm come from donors, meaning neither intended parent is genetically related to the child but neither is the surrogate. This flexibility is one reason gestational surrogacy works for such a broad range of family-building situations.

The Medical Process Step by Step

The journey starts with selecting a gestational carrier, either through an agency or through a personal connection. Once matched, both the surrogate and the intended parents go through medical and psychological screenings. Legal contracts are negotiated and signed before any medical procedures begin.

The IVF portion involves retrieving eggs (from the intended mother or a donor), fertilizing them with sperm in a lab, and growing the resulting embryos for several days. If intended parents already have frozen embryos from a previous IVF cycle, this step is skipped. The surrogate takes hormonal medications to prepare her uterine lining for implantation, and then one embryo is transferred to her uterus. From that point forward, the pregnancy proceeds like any other, with the surrogate receiving standard prenatal care until delivery.

Surrogate Screening Requirements

The screening process for gestational carriers is extensive. The American Society for Reproductive Medicine recommends a full medical evaluation that includes infectious disease testing, a detailed medical and sexual history, a physical exam, and an evaluation of the uterine cavity to confirm it can support a healthy pregnancy. Candidates with evidence of intravenous drug use or active sexually transmitted infections are excluded.

The psychological component is equally rigorous. Surrogates undergo a clinical interview, standardized psychological testing, and what’s called “implication counseling,” which walks through the emotional realities of the process. Evaluators assess the surrogate’s ability to separate from the baby after birth, the risks of attachment, the impact on her own family relationships, and her lifestyle choices around diet, exercise, and substance use. A history of major depression, bipolar disorder, psychosis, postpartum mood disorders, or clinically significant anxiety can disqualify a candidate.

Legal Agreements and Parental Rights

Surrogacy law varies dramatically by state, and the legal framework is one of the most critical pieces of the process. A gestational surrogacy agreement is a contract negotiated between the surrogate and the intended parents, with each side represented by their own attorney. This contract covers compensation, medical decisions, expectations during pregnancy, and the transfer of parental rights after birth.

Some states have streamlined processes for establishing parentage. New York, for example, passed the Child-Parent Security Act in 2021, which legalized gestational surrogacy and created a simple path to establish legal parental rights for intended parents, even when they aren’t biologically related to the child. The law also requires surrogacy agencies to be licensed and includes a formal bill of rights for surrogates. Other states have similar frameworks, while some still lack clear surrogacy laws entirely. Where you live and where the surrogate lives both matter, and getting legal guidance specific to your state is a non-negotiable part of the process.

How Long the Process Takes

From start to finish, gestational surrogacy typically takes 15 to 20 months, though the timeline varies depending on how quickly each phase moves. The matching phase, where intended parents are paired with a surrogate, generally takes 3 to 6 months. Medical screening and legal contracts add another 1 to 2 months. The embryo transfer process itself takes roughly 1 to 1.5 months, including the surrogate’s hormonal preparation. Then there’s the pregnancy itself, which adds the standard 9 months. If the first embryo transfer doesn’t result in pregnancy, the medical phase resets, which can add weeks or months to the overall timeline.

What It Costs

Gestational surrogacy in the United States is expensive, and the total depends heavily on whether you need egg or sperm donation in addition to the surrogacy itself. The major cost categories break down like this:

  • Surrogate compensation: $30,000 to $79,000
  • Agency fees: $15,000 to $50,000
  • IVF and clinic costs: $20,000 to $40,000
  • Legal fees: $10,000 to $20,000

If intended parents already have frozen embryos, total costs typically range from $60,000 to $90,000 for thawing, a single transfer, surrogate compensation, and legal fees (with agency fees often separate). When a fresh IVF cycle using the parents’ own eggs and sperm is needed, the range climbs to $90,000 to $120,000. Adding an egg donor pushes the total to $130,000 to $200,000, accounting for donor compensation, the IVF cycle, surrogate pay, and all legal and agency fees. Insurance coverage for surrogacy-related expenses is limited and inconsistent, so most families pay the bulk of these costs out of pocket or through financing.

The Surrogate’s Experience

Gestational carriers go through a real pregnancy with all the physical demands that entails: morning sickness, weight gain, fatigue, labor, and postpartum recovery. The key difference is that the pregnancy is medically managed from the start, with hormone medications in the early weeks to support implantation and close monitoring throughout. Surrogates typically have already had at least one successful pregnancy of their own, which is both a screening requirement and a practical safeguard, since it confirms their body can carry a pregnancy to term and gives them a realistic understanding of what they’re committing to.

The emotional dimension is real but often well-supported. Pre-surrogacy counseling prepares carriers for the experience of handing the baby to the intended parents after delivery. Many surrogates describe the relationship with the intended parents as deeply meaningful, though the nature of that relationship varies widely, from close and ongoing to more businesslike and boundaried.