Can Unmarried Couples Use Assisted Reproduction?

Yes. In Washington, unmarried couples can use assisted reproduction to build their families, and the law provides clear ways for both partners to become legal parents without needing to be married. For a focused explanation, read What Is Egg Donation Law in Washington.

For related help, see family-law help, Washington parenting-plan guide, and child-support guide.

Parentage Does Not Depend on Marriage

Washington rewrote its parentage laws to reflect the many ways families are formed today, and marriage is not the dividing line for assisted reproduction. The rules that govern parentage through assisted reproduction are found in RCW 26.26A.600 through 26.26A.635. These provisions apply to children conceived through methods other than sexual intercourse, and they do not condition parentage on the couple being married.

The statute even defines an intended parent to include an individual, married or unmarried, who manifests an intent to be legally bound as a parent of a child conceived by assisted reproduction. That definition, in RCW 26.26A.010, signals plainly that unmarried partners are within the scope of the law.

What Counts as Assisted Reproduction

It helps to know what these laws cover. Assisted reproduction is defined broadly as a method of causing pregnancy other than sexual intercourse. Under RCW 26.26A.010, it includes intrauterine or intracervical insemination, the donation of gametes such as sperm or eggs, the donation of embryos, in-vitro fertilization and the transfer of embryos, and intracytoplasmic sperm injection. So whether a couple is using donor sperm, donor eggs, or IVF, they are operating within this framework.

Note that these particular rules do not apply to a child conceived through a surrogacy agreement, which Washington handles under a separate set of statutes. RCW 26.26A.600 makes that boundary clear. If your plan involves a surrogate, different rules apply and separate guidance is important.

How Consent and Intent Establish Parentage

The heart of the framework is consent combined with the intent to parent. Under RCW 26.26A.610, an individual who consents to assisted reproduction by a woman, with the intent to be a parent of the resulting child, is a parent of that child. Marriage is nowhere in that requirement. What establishes parentage is the person's consent and their intent to raise the child as their own.

The consent itself is spelled out in RCW 26.26A.615. Ordinarily, the consent should be in a signed record: a document signed both by the woman giving birth to the child and by the individual who intends to be a parent. This written consent is the cleanest and most reliable way for an unmarried partner to lock in their status as a legal parent, and creating it before conception is a smart, protective step.

What Happens Without a Signed Record

Life does not always follow the ideal path, and the law accounts for that. Under RCW 26.26A.615, a failure to sign the consent record does not automatically prevent a court from finding consent to parentage. A court may still find parentage if a party proves by clear and convincing evidence that, before conception, the couple had an express agreement that both would be parents. Alternatively, a court may find parentage if, for the first four years of the child's life, the couple resided together in the same household with the child and both openly held the child out as their own, with certain allowances if death or incapacity interrupted that intent.

This is a safety net, not a substitute for planning. Proving an unwritten agreement by clear and convincing evidence is harder and less certain than simply signing the consent record up front. Unmarried partners are far better protected when they document their intent in writing at the outset.

The Donor Is Not a Parent

A common and important question for unmarried couples using donor gametes is whether the donor could later claim, or be saddled with, parental rights. Washington answers this directly. Under RCW 26.26A.605, a donor is not a parent of a child conceived by assisted reproduction. A donor is defined as someone who provides gametes intended for use in assisted reproduction, whether or not for payment, and that definition in RCW 26.26A.010 excludes the intended parents.

The practical effect is meaningful. When a couple uses donor sperm or donor eggs, the donor does not become a legal parent, and the intended parents are the ones the law recognizes. That gives unmarried couples confidence that their family structure is protected and that a donor will not disrupt it later.

Why Written Consent Is Worth the Effort

For unmarried couples especially, putting the consent in a signed record before conception is one of the most important steps you can take. It clarifies who the parents are, it reduces the risk of a dispute later, and it protects both partners' relationships with the child if circumstances change. Some couples also pursue an additional layer of security, such as a court order or a second-parent adoption, to make their parentage as durable and portable as possible across state lines. These are decisions worth discussing with a family law attorney before you begin.

Planning Your Family in Snohomish County

Unmarried couples in Snohomish County have the same access to these protections as anyone else in Washington. Because parentage questions can affect custody, support, inheritance, and medical decision-making, getting the paperwork right from the start matters. The Law Office of Chad Foster helps unmarried partners across Snohomish County understand how Washington's assisted reproduction laws apply to them and how to establish clear, secure parentage for both partners. If you are planning to grow your family through assisted reproduction, reach out to make sure your legal footing is solid before conception.