Plan renewal letters arrive each fall, typically between October and December. Most people file them in a drawer and let auto-renewal take over. That is almost always a mistake. ACA Marketplace plans can change significantly from one year to the next: premiums rise, deductibles shift, drug formularies get restructured, and provider networks shrink or change carriers entirely. The plan that was right for you in 2025 may be a poor fit in 2026, and the plan that offers the best value at renewal may not be the one you currently hold. The 2026 plan year brought a specific shock for millions of enrollees: the enhanced premium tax credits authorized under the American Rescue Plan Act expired on January 1, 2026. Households that were paying $10 to $100 per month under the enhanced subsidy regime found their premiums doubling or tripling at renewal. Understanding your options before auto-renewal locks you in is not optional. It is the single most important healthcare money decision most Americans make each year.
Five topics this guide covers: how to read your plan renewal letter, what the 60-day plan-change Special Enrollment Period means and when it applies, how to compare auto-renew against switching plans, and the most common renewal mistakes that cost enrollees thousands of dollars annually. The ACA Marketplace Open Enrollment Period for 2027 coverage opens November 1, 2026, and runs through January 15, 2027, per CMS. For households whose income changed significantly during 2026, a Marketplace Special Enrollment Period or a Medicaid pivot may be available right now. Use the phrase special enrollment period 2026 when searching healthcare.gov for your current options. Check the ACA income limits to confirm your 2026 premium tax credit calculation and verify whether your auto-renewed subsidy amount matches your current projected household income. Enrollees who do not update their income projection at renewal risk owing back subsidy dollars to the IRS when filing their 1095-A reconciliation on Form 8962.
6 Steps to Get Coverage
Common Mistakes That Cost People Thousands
The most expensive mistakes enrollees make at plan renewal time:
- Letting auto-renewal happen without reviewing the renewal letter. Networks and formularies change annually. Providers and drugs covered last year may not be covered this year.
- Not updating household income before renewal. Your 2026 APTC was calculated on your last reported income. If you earned more in 2026 than projected, you may owe subsidy repayment on Form 8962 at tax time. If you earned less, you left money on the table.
- Assuming the same plan offers the same cost-sharing. The 2026 ACA out-of-pocket maximum increased to $10,600 individual and $21,200 family (HHS June 2025 revision). Many plans restructured their deductibles and copays at the same time.
- Not checking Medicaid eligibility after an income drop. If your income fell during 2026, you may qualify for free Medicaid coverage in an expansion state. Applying for Medicaid through healthcare.gov takes 15 minutes and can eliminate your premium entirely.
- Choosing a plan based only on premium. A low-premium Bronze plan can cost far more than a Silver plan with CSR for enrollees between 100% and 250% FPL, because the cost-sharing reduction on Silver sharply reduces deductibles and copays, not just premiums.
What Your Plan Renewal Letter Actually Tells You (and What It Leaves Out)
Plan renewal letters from ACA Marketplace insurers are required by CMS to disclose four items: your new monthly premium (net of any updated APTC), your new annual deductible, your new out-of-pocket maximum, and whether the plan is continuing or being discontinued. What the letter does not do: it does not show you competing plans in your area, it does not tell you whether your providers are still in-network (that requires a separate provider directory lookup), and it does not calculate whether you are leaving a better deal on the table. Starting in 2026, the letter also reflects the expiration of enhanced premium tax credits. Households that enrolled under the American Rescue Plan Act enhanced subsidy regime will see their gross (pre-APTC) premium unchanged but their net (post-APTC) premium substantially higher, because the enhanced subsidy component is gone.
Three things to do immediately after reading your renewal letter: First, log in to healthcare.gov and run a plan comparison for your current household size and updated 2026 income to see what other options cost. Second, call your three most important providers (primary care, any ongoing specialist, and your pharmacy) and ask whether your current plan is still in-network for 2026. Third, check your top three prescription drugs against the renewed plan's formulary on the insurer's website. Formulary changes at renewal are common and are one of the most frequent sources of unexpected cost spikes for existing enrollees.
Auto-Renew vs Switching: A Decision Framework for 2026
Auto-renewing your plan is the right choice in exactly one scenario: your income is unchanged, your providers are still in-network, your prescriptions are still on the same tier of the formulary, your premium increased by less than 5%, and a competing plan with better cost-sharing is not available at your income level. Outside that scenario, actively switching at Open Enrollment is almost always worth the 30 minutes of comparison work. Three comparison factors outweigh the premium in importance for most households: (1) cost-sharing structure for your likely utilization pattern (a family with regular doctor visits should weight deductible and copay heavily, not just monthly premium), (2) network match against your existing providers (switching plans and losing your primary care relationship mid-treatment is disruptive and potentially costly), and (3) drug formulary tier placement for your chronic medications (a drug moving from Tier 2 to Tier 4 at renewal can add $100 to $400 per month in drug costs alone).
For 2026 specifically, the return of the 400% FPL subsidy cliff (enhanced PTCs expired January 1, 2026) changes the math for households between 300% and 400% FPL. Under the enhanced subsidy regime, households at 350% FPL were capped at 8.5% of income for the benchmark Silver plan premium. Under the 2026 cliff-restored rules, the cap at 350% FPL rises above 10%, and at 400% FPL the cap disappears entirely. Households at 400% FPL ($63,840 single / $132,000 family of 4) get no subsidy at all in 2026, making plan-switching to a lower-premium Bronze plan or a lower-benefit catastrophic plan (if eligible) the only cost-reduction tool available. Catastrophic plans are available only to enrollees under age 30 or those with a hardship exemption, and their deductible equals the 2026 OOP maximum of $10,600.
Documents Needed and How to Submit an Income Update at Renewal
Updating your application at renewal requires gathering a few key documents before logging in to healthcare.gov. Most renewals can be completed in under 30 minutes if you have these ready. For income verification, you need your most recent pay stubs (last two to three months), self-employment net income estimate if applicable, most recent Social Security award letter if you receive SS benefits, and unemployment award letter if receiving unemployment. For household-size changes (birth, adoption, marriage, divorce since last enrollment), you need the relevant legal document: birth certificate, marriage certificate, divorce decree, or adoption placement papers. For a move triggering a new-state SEP, you need proof of new address (utility bill, lease, or state ID). The ACA income limits page has the full 2026 income threshold table by household size to help you estimate your 2026 MAGI and expected premium tax credit before you log in.
- Renewal letter from your current insurer (shows plan changes and new premium before APTC)
- Two to three most recent pay stubs or self-employment income documentation
- Social Security numbers for all household members applying
- Current ZIP code and county (plan availability varies by location)
- Your 2025 Form 1095-A (shows actual APTC received; needed for Form 8962 reconciliation)
- List of current prescriptions and dosages (to check formulary coverage on new plans)
- Names and NPI numbers of key providers (to check in-network status on alternative plans)
Medicaid Eligibility After a Renewal-Triggering Income Change in 2026
Losing job-based coverage or experiencing a significant income drop during 2026 often triggers Medicaid eligibility that did not exist at the prior-year renewal. Medicaid enrollment is year-round in all 50 states; no annual window applies. In the 40 expansion states plus DC, the threshold is 138% FPL: for 2026, $22,025 for a single person, $29,820 for a family of 2, $37,615 for a family of 3, and $45,540 for a family of 4, per HHS ASPE 2026 Poverty Guidelines. State Medicaid programs operate under local brand names: Medi-Cal in California, AHCCCS in Arizona, Apple Health in Washington, MassHealth in Massachusetts, BadgerCare in Wisconsin, MaineCare in Maine, HUSKY Health in Connecticut, NJ FamilyCare in New Jersey. In the 10 non-expansion states (Alabama, Florida, Georgia, Kansas, Mississippi, South Carolina, Tennessee, Texas, Wisconsin, Wyoming), income limits for non-disabled adults are typically well below 100% FPL. If your income dropped below Medicaid limits and you live in an expansion state, apply at your state Medicaid agency or through healthcare.gov before spending another month on a Marketplace premium.
Frequently Asked Questions
What is the SEP window when my ACA plan changes at renewal?
When your Marketplace plan changes at renewal (premium increase, benefit change, network change, or plan discontinuation), CMS triggers a 60-day Special Enrollment Period starting from the date of the plan-change notice. For most 2026 plan-year renewals, that notice arrived in October or November 2025, making the SEP window run roughly November through January 2026. If that window has closed and you have no other qualifying life event, you must wait for the 2027 Open Enrollment Period starting November 1, 2026. Medicaid enrollment is year-round regardless of SEP deadlines.
How do I document a plan change to claim my SEP on healthcare.gov?
Log in to healthcare.gov and select 'Report a life change.' Under plan-change events, you can report that your plan changed at renewal or was discontinued. You will need your current plan renewal letter showing the plan name, plan ID, and the nature of the change. For discontinuation SEPs, healthcare.gov typically generates the SEP automatically based on data from your insurer. If the SEP does not appear automatically, call the Marketplace Call Center at 1-800-318-2596 with your renewal letter in hand to have an agent document the qualifying event and open your SEP manually.
What if I miss the 60-day SEP after my plan changes at renewal?
Missing the 60-day plan-change SEP means you cannot switch plans until the next ACA Open Enrollment Period, which for 2027 coverage runs November 1, 2026 through January 15, 2027. Two exceptions exist: first, if another qualifying life event occurs (job loss, marriage, birth, move), that event triggers a fresh 60-day SEP from the date of the event. Second, if your income drops below 138% FPL, you can enroll in Medicaid year-round at any time. Short-term limited-duration plans are available outside OEP but are not ACA-compliant: they can exclude pre-existing conditions and have no essential health benefit requirements.
Does auto-renewing my ACA plan affect my premium tax credit?
Yes, in an important way. When your plan auto-renews, healthcare.gov also auto-renews your Advanced Premium Tax Credit (APTC) at the same dollar amount as the prior year, even if your income or household size changed. If your 2026 income is higher than what was reported, you will have received too much APTC and must repay the difference when you file Form 8962 with your 1095-A at tax time. If your income dropped, you are entitled to a larger credit and are leaving money on the table. Always log in to healthcare.gov at renewal and update your income projection before your plan auto-renews.
What is the difference between the plan-change SEP and the regular ACA Open Enrollment Period?
The ACA Open Enrollment Period (OEP) is the annual window when anyone can switch or enroll in a Marketplace plan regardless of whether a life event has occurred. The 2027 OEP runs November 1, 2026 through January 15, 2027. A Special Enrollment Period (SEP) is an event-triggered window outside the OEP, available when a qualifying life event occurs. The plan-change SEP is one specific type of SEP triggered when your Marketplace plan changes at renewal. Both the SEP and OEP allow you to switch plans; the difference is timing and documentation. During OEP, no documentation of a qualifying event is required.
I received a renewal letter with a much higher premium. Do I qualify for Medicaid now?
Whether you qualify for Medicaid depends on your 2026 household income, not your premium amount. In the 40 expansion states plus DC, the 2026 Medicaid income limit is 138% FPL: $22,025 for a single person or $45,540 for a family of 4 per HHS ASPE 2026 Poverty Guidelines. If your income is at or below those thresholds, apply for Medicaid at healthcare.gov or your state Medicaid agency year-round. A high premium alone does not create Medicaid eligibility. However, if a job loss or income drop caused both the coverage change and a drop in income, you may have triggered both a Marketplace SEP and Medicaid eligibility simultaneously.
What is a Silver CSR plan and why does it matter at renewal time?
A Silver plan with a Cost-Sharing Reduction (CSR) is available only to enrollees with household income between 100% and 250% FPL who select a Silver-tier Marketplace plan. The CSR subsidy reduces the plan's deductible, copays, and out-of-pocket maximum significantly beyond the premium subsidy alone. At 150% FPL, a Silver CSR plan can have a deductible as low as $0 to $500 and an out-of-pocket maximum of $1,500 to $3,500, compared to the standard 2026 ACA OOP max of $10,600. If you are in the 100% to 250% FPL income range and renewing to a Bronze or Gold plan, compare actual Silver CSR total annual cost before finalizing your renewal.
What happens to my COBRA if I got a plan renewal letter for my ACA Marketplace plan?
COBRA and ACA Marketplace plans are separate coverage tracks. A renewal letter from your Marketplace insurer has no effect on existing COBRA coverage. However, if you were on COBRA and it is expiring, that expiration is itself a qualifying life event that triggers a 60-day ACA Marketplace SEP from the COBRA exhaustion date. COBRA for most qualifying events runs 18 months; for divorce or death of the covered employee it runs 36 months. If you are deciding between continuing COBRA and switching to a Marketplace plan, compare the full-year cost at your 2026 income level: most people with reduced income qualify for Marketplace subsidies that make ACA plans cheaper than COBRA's 102% of full premium.
