New Jersey is one of a small group of states that goes beyond the federal ACA rule requiring dependent coverage to age 26. Under New Jersey Chapter 375, enacted in 2005 and amended multiple times since, eligible adults can remain on a parent's group health plan until their 31st birthday. The DU31 designation appears on insurance cards and plan documents to flag this state-law extension. Unlike the federal age-26 rule, Chapter 375 comes with strings attached: you must be unmarried, have no children, reside in New Jersey or attend school as a full-time student, have no other health coverage offered through your own employer, and not be entitled to Medicare. The parent must also be enrolled in a group plan that is subject to New Jersey insurance law, which generally means fully insured employer plans purchased by employers in New Jersey rather than large self-insured national employer plans.
Federal ACA law and New Jersey Chapter 375 run on different clocks and different eligibility criteria. The federal rule requires all ACA-compliant health plans to cover dependents through age 26 with no conditions. Chapter 375 adds up to five extra years but attaches conditions that can disqualify you. If your parent's plan is a self-insured large employer plan (common for Fortune 500 employers), the Chapter 375 extension likely does not apply because federal ERISA law preempts state insurance mandates for self-insured plans. Confirming your parent's plan type with HR before you turn 26 is the single most important step in this process. Alongside the Chapter 375 path, NJ residents have the standard 60-day ACA Marketplace Special Enrollment Period and year-round NJ FamilyCare enrollment. This guide walks through all three options, the documents you need, and the exact enrollment windows so you can make the right call before your coverage lapses. For background on ACA income limits that govern subsidy eligibility, see the ACA income limits page, and for Medicaid thresholds, see the Medicaid income limits resource.
7 Steps to Get Coverage
Common Mistakes That Cost People Thousands
The most expensive mistakes New Jersey residents make when turning 26:
- Assuming Chapter 375 applies to all plans. Self-insured large employer plans (covering roughly 60% of US workers) are exempt from the NJ Chapter 375 extension under federal ERISA law. Always confirm with HR whether the plan is fully insured before counting on DU31 eligibility.
- Missing the 30-day Chapter 375 enrollment window. The DU31 application must reach the insurer within 30 days of aging off the parent's plan. Missing this window forfeits the state-law extension and forces you to the ACA Marketplace SEP or NJ FamilyCare.
- Not comparing Chapter 375 premiums against subsidized Marketplace plans. Chapter 375 charges the full group premium with no subsidy. If your 2026 income is below 400% FPL ($63,840 single), an ACA Marketplace Silver plan with premium tax credits is often cheaper than Chapter 375.
- Forgetting NJ FamilyCare as a first option. NJ FamilyCare is free or near-free and enrolls year-round. Many New Jersey 26-year-olds qualify at entry-level wages (at or below $22,025 annual for a single person in 2026) and skip the Chapter 375 complexity entirely.
- Getting married or having a child while on Chapter 375 and not realizing coverage ends immediately. Marriage or parenthood are automatic Chapter 375 termination events. You have a 60-day ACA Marketplace SEP from that event, so act quickly.
- Missing the 60-day ACA SEP window by confusing it with the Chapter 375 window. The federal SEP is 60 days from coverage loss; the state DU31 window is 30 days. These are parallel clocks, not sequential. You can pursue both at the same time to preserve all options.
New Jersey Chapter 375 DU31: Full Eligibility Rules and Enrollment Process
New Jersey Chapter 375 (P.L. 2005, c. 375) extended dependent health coverage beyond the federal age-26 floor to age 31 for state-regulated plans. The DU31 designation on your insurance card confirms the plan is operating under Chapter 375. To be eligible, you must be under age 31, unmarried, not a parent, a New Jersey resident or enrolled as a full-time student (in any state), and not offered health coverage through your own employer. You must not be entitled to Medicare. Your parent must hold active enrollment in a group health benefit plan subject to New Jersey insurance law.
Enrollment under Chapter 375 must be requested within 30 days before or after your coverage end date on the parent's plan. Outside that window, you lose the DU31 right until another triggering event occurs (such as returning to New Jersey from another state). Premiums are paid directly by you to the carrier; no employer subsidy applies. The premium is the employee-plus-dependent share of the group plan rate, which is often lower than individual market or COBRA rates but higher than subsidized Marketplace rates for income-eligible applicants. Request a premium quote from the parent's HR department before deciding whether DU31 or ACA Marketplace is the more affordable path.
Coverage under Chapter 375 terminates upon your 31st birthday (the day before, in practice), marriage, becoming a parent, losing New Jersey residency without full-time student status, receiving an offer of employer-sponsored coverage, or gaining Medicare entitlement. A job that offers health insurance terminates your DU31 eligibility even if you decline the employer plan. When any termination event occurs, you have a 60-day ACA Marketplace Special Enrollment Period starting from that date. Setting a calendar reminder for each of these milestones is essential to avoiding an unintended coverage gap.
ACA Marketplace vs. Chapter 375 DU31: Which Costs Less in New Jersey in 2026?
Turning 26 in New Jersey opens at least two concurrent coverage paths, and cost is the deciding factor for most people. Chapter 375 DU31 premiums reflect the full group plan rate because there is no subsidy. At many NJ-regulated plans, a dependent-only rate for an adult under 31 runs between $250 and $600 per month in 2026 depending on the carrier and plan tier. ACA Marketplace plans use premium tax credits that are income-driven. For a 26-year-old with a 2026 income between $22,025 and $63,840 (138% to 400% FPL), the Advance Premium Tax Credit (APTC) can reduce Silver plan monthly cost to $0 to $200. The 2026 subsidy cliff returned after enhanced PTCs expired January 1, 2026: income above 400% FPL ($63,840 single) produces no subsidy at all.
COBRA is a third path but rarely the best one for a 26-year-old. Federal COBRA extends the parent's plan at 102% of the full group premium for up to 36 months (dependent status loss qualifies for 36-month COBRA rather than the standard 18-month window). COBRA preserves your existing network and any in-progress deductible for the calendar year, making it useful if you have ongoing specialist treatment or an already-met deductible. However, COBRA costs are typically $300 to $700 per month for an individual. The decision matrix for most NJ 26-year-olds in 2026: check NJ FamilyCare first (free if income qualifies at or below 138% FPL); run the ACA Marketplace calculator at healthcare.gov second (subsidies apply between 138% and 400% FPL); evaluate Chapter 375 DU31 third if you need to stay on the parent's network; use COBRA only as a temporary bridge while you compare.
NJ FamilyCare Eligibility for Adults Turning 26 in 2026
NJ FamilyCare is New Jersey's Medicaid and CHIP program, and it covers adults ages 19 to 64 with income at or below 138% of the Federal Poverty Level. New Jersey expanded Medicaid under the ACA and covers approximately 1.8 million residents through NJ FamilyCare. For 2026, the 138% FPL threshold for a single adult is $22,025 in annual income. NJ FamilyCare enrollment is year-round with no deadline, meaning there is no pressure to apply within any window. If you turn 26, lose parental coverage, and have low income, apply for NJ FamilyCare through njfamilycare.dhs.state.nj.us or through healthcare.gov, which routes to the same eligibility determination.
NJ FamilyCare covers comprehensive benefits including preventive care, mental health services, prescription drugs, dental (for adults under certain categories), and specialist visits. There are no premiums for adults at or below 138% FPL. For CHIP-age children in the family (under 18), coverage extends to higher income levels, often up to 350% FPL in New Jersey. Adults aged 19 to 26 turning 26 who have very low income should apply for NJ FamilyCare before doing anything else. The Medicaid income limits page shows the 2026 threshold table by household size for the 40 Medicaid expansion states plus DC, including New Jersey.
Documents Needed: What to Gather Before Your Coverage Ends
Gathering documents before your 26th birthday speeds up whichever path you choose. For Chapter 375 DU31, you need proof of NJ residency (utility bill, lease, NJ driver's license) or proof of full-time student status (enrollment letter from your school), a statement from your employer (or a signed self-attestation) that you are not offered health coverage through your job, a statement that you are unmarried and have no children, and the DU31 enrollment form from your parent's insurer or HR department. For NJ FamilyCare, you need your Social Security number, proof of NJ residency, and income documentation (pay stubs, tax returns, or self-employment records for the prior year or projected current-year earnings). For ACA Marketplace SEP, you need your Social Security number, the date your coverage ends on the parent's plan (often shown on a letter from the insurer), and projected 2026 income.
Frequently Asked Questions
What is the enrollment window for New Jersey Chapter 375 DU31 when I turn 26?
The Chapter 375 DU31 enrollment window is 30 days before or after your coverage ends on your parent's plan. If your parent's plan terminates your coverage on your 26th birthday or at the end of that month, you must submit the DU31 enrollment form to the insurer within 30 days of that termination date. Missing this window forfeits your Chapter 375 right until another qualifying event occurs. Simultaneously, you have a 60-day ACA Marketplace Special Enrollment Period from the same date, giving you more time for the federal path.
Does Chapter 375 apply to all plans in New Jersey?
No. Chapter 375 applies only to fully insured health benefit plans subject to New Jersey state insurance law. Self-insured employer plans, which cover roughly 60% of US workers at larger employers, are governed by federal ERISA law and are exempt from New Jersey's Chapter 375 mandate. To find out which type your parent has, ask HR whether the plan is 'fully insured' or 'self-insured.' A self-insured plan often says 'self-funded' or 'administrative services only (ASO)' on plan documents. If the plan is self-insured, the Chapter 375 DU31 path is unavailable and you should proceed with the ACA Marketplace SEP or NJ FamilyCare.
What if I miss the 60-day ACA SEP after turning 26?
Missing the 60-day ACA Marketplace Special Enrollment Period means waiting until the next Open Enrollment Period (November 1 through January 15 for coverage starting January 1, 2027) unless another qualifying life event occurs before then. NJ FamilyCare enrollment is year-round and not subject to the 60-day SEP rule, so if your income qualifies at or below 138% FPL ($22,025 for a single person in 2026), you can apply for NJ FamilyCare at any time with no gap. If you miss the Chapter 375 window too, going uninsured until November creates both a coverage gap and potential out-of-pocket exposure for any medical events.
How do I document turning 26 for an ACA Marketplace SEP application?
For the ACA Marketplace SEP triggered by turning 26, healthcare.gov typically requires the date your dependent coverage ends and the name of the plan you were covered under. You may need to upload a letter from your parent's insurer or employer stating the termination date of your dependent coverage. A HIPAA certificate of creditable coverage (which the plan must provide within a reasonable time after coverage ends) also serves as proof. Have the coverage termination letter or HIPAA notice on hand before starting your SEP application to avoid delays.
Do I qualify for NJ FamilyCare if I just turned 26 and my income is low?
Yes. New Jersey expanded Medicaid under the ACA, so NJ FamilyCare covers adults ages 19 to 64 with income at or below 138% FPL on a year-round basis. For 2026, that threshold is $22,025 annual income for a single adult. NJ FamilyCare uses Modified Adjusted Gross Income (MAGI) to count income, which includes wages, self-employment income, and unemployment benefits, but excludes most non-cash benefits. Apply at njfamilycare.dhs.state.nj.us or through healthcare.gov. If your income is on the border of 138% FPL, applying through healthcare.gov is recommended because the system routes you automatically to Medicaid if you qualify or to Marketplace plans with subsidies if you do not.
What state-specific rules apply to turning 26 in states near New Jersey?
New Jersey's Chapter 375 is one of the most generous state extensions in the US, covering to age 31. Nearby states have their own rules: New York extends dependent coverage to age 30 under NY Insurance Law Section 4305(e) with no marital or residency condition beyond state regulation of the plan. Pennsylvania extends to age 30 under 40 P.S. Section 752.4 for unmarried adults with no dependents. Florida extends to age 30 under F.S. 627.6562 with similar conditions. All of these state extensions are limited to fully insured plans; self-insured employer plans are exempt under federal ERISA law nationwide.
Can I stay on Chapter 375 DU31 coverage if I get a job that does not offer health insurance?
Yes. Chapter 375 requires only that you not be offered health coverage through your employer, not that you be unemployed. If your job does not offer health insurance as a benefit, you remain eligible for DU31 as long as the other conditions (unmarried, no children, NJ resident or full-time student, under age 31) continue to apply. The moment your employer offers you health coverage, even if you decline it, you lose Chapter 375 eligibility. At that point, you have a 60-day ACA Marketplace SEP or can explore your employer's plan.
What is a qualifying life event for turning 26, and how does it work with COBRA?
Turning 26 and aging off a parent's plan is a qualifying life event (QLE) under both the ACA and federal COBRA rules. For COBRA, dependent status loss qualifies for 36 months of continuation (not the standard 18 months), because it is a dependent-related event rather than a job-loss event. The COBRA election window is 60 days from the qualifying event. For the ACA Marketplace SEP, the window is also 60 days from coverage loss. These two windows run concurrently, not sequentially. Most people should compare ACA Marketplace Silver plan premiums with subsidies against COBRA before electing COBRA, since the 2026 premium tax credit often makes Marketplace plans significantly cheaper, especially for incomes below 400% FPL.
