A donor signs a contract. The recipients sign a contract. Everyone agrees, on paper, that the donor will have no parental role. Years later, a court orders that same donor to pay child support, or grants him visitation he never asked for. These cases keep happening, and the pattern reveals something uncomfortable about how American family law actually works.
Despite decades of model statutes and reform efforts, biology remains the default tiebreaker when courts have to decide who counts as a parent. Intent, contract, and even insemination procedure all bend to that gravity.
The Uniform Parentage Act doesn’t always apply
Most people assume the Uniform Parentage Act protects donors. It does, but only if the procedure is performed by a licensed physician and the parties follow the statute precisely. Home insemination, known donors, informal arrangements, and same-sex couples in non-adopting states all fall into legal gaps where the statute either doesn’t reach or has never been tested. Roughly a dozen states have weak or unclear donor statutes. In those jurisdictions, a donor who signed a clear waiver can still be ordered to pay support if the state agency comes looking, because the statute that would have shielded him technically didn’t apply to his arrangement. Contracts between private parties don’t override family code.
Child support is the state’s claim, not the parent’s
The most counterintuitive piece of these cases is that child support obligations don’t actually belong to the recipient parent. They belong to the state, which has an interest in not paying public benefits when a biological parent exists. Even when the recipient signs an airtight waiver, that waiver can’t bind the state. If the family later applies for assistance, the agency can pursue the biological father independently. Courts have repeatedly held that parents can’t contract away a child’s right to support. The donor’s intent is legally irrelevant in that proceeding. What matters is the DNA and the absence of a statutory shield.
Same-sex couples and second-parent adoption gaps
Same-sex couples are disproportionately caught in these rulings, often through no fault of their own. In states without automatic spousal presumption for non-biological mothers, the second parent must complete a stepparent or second-parent adoption to be legally recognized. Until that adoption finalizes, the biological donor remains the legal father by default, and any informal arrangement can collapse if relationships sour or one parent dies. Several high-profile cases in the past decade have stripped non-biological mothers of custody after long parenting relationships because the paperwork was never completed. The lesson is procedural: in family law, the form matters as much as the family.
Bottom line
Donor agreements are useful, but they aren’t bulletproof. The reliable protection comes from following the statutory route, using a licensed physician, and completing any adoptions or parentage judgments the state requires. Intent-based parentage is gaining ground in academic writing and a few progressive jurisdictions, but in most courtrooms, biology still wins ties. Anyone entering a donor arrangement should plan for the law as it is, not the law as advocates wish it were. The paperwork is the parenthood.
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