Welcoming a new baby is one of the most joyful and chaotic moments in a family's life. Health insurance paperwork may be the last thing on your mind, but the 60-day window after birth or adoption is one of the most time-sensitive insurance decisions you will ever make. Miss it, and your newborn could have no coverage until November's Open Enrollment period. Act within 60 days, and coverage is retroactive to the birth or adoption date, meaning your baby is covered from day one even if you enrolled a few weeks later.
The good news: a new baby typically improves your family's insurance situation in several ways. Your household size goes up by one, which lowers your income as a percentage of the Federal Poverty Level (FPL) and often increases your premium tax credit on an ACA Marketplace plan. Your new child likely qualifies for CHIP or Medicaid regardless of whether you qualify yourself, often at no cost. In 2026, you navigate this with the ACA subsidy cliff back in effect (enhanced premium tax credits from ARPA and the IRA expired January 1, 2026), so updating your Marketplace application to reflect the correct household size is more important than ever. This guide covers the 6 steps to get your newborn covered and the mistakes that leave families paying out of pocket. If you have questions about what Medicaid covers for your baby's care, see does Medicaid cover mental health and the CHIP eligibility by state guide. For the ACA pregnancy coverage rules that applied before the birth, see does the ACA cover pregnancy.
6 Steps to Get Coverage
Common Mistakes That Cost People Thousands
The most costly mistakes parents make after a birth or adoption:
- Waiting past 60 days. The Marketplace SEP is a hard deadline. A baby born June 1 has a window that closes July 31. After that, there is no coverage for the child until November Open Enrollment unless another qualifying event occurs.
- Not updating household size on a Marketplace application. Adding a child raises your household size and lowers your income as a percentage of FPL; this change often increases your premium tax credit significantly. Skipping the update means you overpay every month.
- Skipping CHIP for the child because the parents do not qualify for Medicaid. CHIP income limits are higher than Medicaid; in most states, children qualify at 200% to 317% FPL while adults cap out at 138% FPL in expansion states. Check healthcare.gov for your child even if you are on a Marketplace plan.
- Assuming the newborn is covered automatically on a Marketplace plan. Unlike Medicaid's deemed-newborn rule, ACA Marketplace plans do NOT automatically cover a newborn. You must actively add the baby within 60 days or coverage is not retroactive.
- Enrolling in COBRA instead of exploring ACA Marketplace options. With the 2026 subsidy cliff back in effect and enhanced PTCs expired, COBRA at 102% of the full premium is often $1,000 to $2,500 per month for a family. Compare marketplace plans with updated household size first.
Frequently Asked Questions
What is the SEP window after having a baby?
Birth or adoption triggers a 60-day Special Enrollment Period (SEP) starting on the date of birth or adoption. For a baby born August 1, 2026, the window closes September 30, 2026. Within this window, you can add your newborn to your existing plan or enroll in a new Marketplace plan. Medicaid and CHIP have no 60-day limit and are open year-round.
Is my newborn's coverage retroactive to the birth date?
Yes, for both Marketplace plans and Medicaid. If you enroll your newborn in an ACA Marketplace plan within the 60-day SEP, coverage is effective retroactive to the birth date. If your baby is born when you already have Medicaid, the newborn is automatically enrolled and coverage is retroactive to birth. This means even a hospital stay on day one is covered, as long as you complete enrollment within 60 days.
How do I document the birth for a Marketplace SEP?
Log in to healthcare.gov and report the birth as a qualifying life event. You will need to upload supporting documents, typically a birth certificate or official hospital birth record. For adoptions, submit the adoption decree or placement letter from the adoption agency. You typically have 30 days after enrolling to submit documents. Incomplete submissions can delay or cancel enrollment, so upload a clear copy of the official document.
What if I miss the 60-day SEP window after birth?
If you miss the 60-day window, your child cannot be added to a Marketplace plan until the next Open Enrollment Period (November 1, 2026 for 2027 coverage). However, Medicaid and CHIP remain year-round options. If your household income qualifies, you can apply for CHIP or Medicaid for your child at any time through healthcare.gov or your state Medicaid agency; no SEP required.
Does my child qualify for CHIP if I have a Marketplace plan?
Yes. CHIP eligibility is based on your child's household income, not whether you personally have a Marketplace plan. In most states, children qualify for CHIP at household incomes between 200% and 317% FPL. For a family of 3 in 2026, that is up to about $86,600 per year. State CHIP programs include Medi-Cal for Kids (CA), AllKids (IL), BadgerCare Plus (WI), NJ FamilyCare (NJ), and HUSKY Health (CT). Apply at healthcare.gov year-round.
What state-specific CHIP rules should I know?
CHIP income limits and program names vary by state. California (Medi-Cal for Kids) covers children to 317% FPL. Illinois (AllKids) covers all children regardless of immigration status. Wisconsin (BadgerCare Plus) and Connecticut (HUSKY Health) cover children to 300-317% FPL. New Jersey (NJ FamilyCare) covers children to 355% FPL. Texas and Florida cover children to 200% FPL but are not Medicaid expansion states, so parent coverage options are limited. Check your state's Medicaid agency for current limits.
Do I qualify for Medicaid after having a baby?
It depends on your income and state. In 40 states plus DC that expanded Medicaid, adults under 138% FPL ($22,025 single / $37,702 household of 3 in 2026) qualify for Medicaid year-round. If you had Medicaid during pregnancy, you may qualify for postpartum Medicaid for up to 12 months under many state programs. Non-expansion states (including TX, FL, GA) have much narrower adult eligibility. Your newborn qualifies for Medicaid at higher income thresholds than you do.
How does adding a baby change my ACA Marketplace subsidy?
Adding a baby increases your household size by one, which lowers your income as a percentage of FPL. A lower FPL percentage means a larger premium tax credit. For example, a family of 2 earning $65,000 is at about 300% FPL in 2026. The same income for a family of 3 is about 238% FPL, potentially qualifying for a meaningful premium tax credit. Log in to healthcare.gov and update your application with the new household size to recalculate your subsidy.
