How to Choose a Health Insurance Plan During Open Enrollment 2026

To choose a health insurance plan during open enrollment, work out what you are likely to spend on care in a year, then pick the plan whose deductible and out-of-pocket maximum you can handle alongside its monthly premium. After that, confirm your doctors, hospitals, and prescriptions are covered, and enroll before the deadline.

That is the whole decision. Almost everything else is detail layered on top of it. The reason guides like this get long is that readers arrive with very different setups, so the same plan can be the right pick for one person and a bad deal for the next.

Two things to sort out before any of it makes sense. First, Marketplace enrollment and employer-sponsored enrollment are separate systems with separate rules, and the deadline that applies to you may not be the deadline on the news. Second, a plan year is not always January through December. Plenty of employer plans run from September to August or July to June, and the plan you have now may not even sell in your county next year.

Rules here describe how US coverage generally works. Plan terms, prices, and deadlines change, and only your plan documents and a licensed navigator or broker can tell you what applies to your household.

Table of Contents

1. What You Need Before You Compare Plans
2. Step-by-Step: Six Steps to Choosing a Plan
3. Step 1: Confirm Your Enrollment Window and Eligibility
4. Step 2: Estimate Your Expected Annual Cost
5. Step 3: Check Coverage for What You Actually Need
6. Step 4: Confirm the Provider and Hospital Network
7. Step 5: Compare Plan Types and Tax Treatment
8. Step 6: Make a Shortlist and Enroll Carefully
9. Common Mistakes That Cost People Money
10. Frequently Asked Questions
11. When is open enrollment for health insurance in the US?
12. Can I change health insurance plans outside open enrollment?
13. Should I choose the plan with the lowest monthly premium?
14. Does a health insurance plan cover my current doctors and prescriptions?
15. How do subsidies and tax credits affect Marketplace plan choices?
16. What is the difference between an HMO, PPO, EPO, and high-deductible plan?

What You Need Before You Compare Plans

Gathering your information first turns plan comparison into arithmetic rather than guesswork. Most of what you need is already in your inbox or in a drawer somewhere.

• The deadline that applies to you — the Marketplace window on HealthCare.gov or your state’s marketplace, or the benefits portal date your employer actually uses.
• Household details — who you are covering, their ages, and whether anyone qualifies for coverage through a parent or spouse instead.
• An income estimate for the coming year, including any self-employment income. Household size and income decide which plans are available to you and whether help with premiums applies.
• Your prescription list with doses, plus a few drugs you expect to need soon. Names matter more than you would think, including whether a drug is generic or brand.
• Your provider list — primary care doctor, specialists you see regularly, hospital, and any behavioral health or therapy providers.
• Last year’s healthcare spending from your insurer’s year-end summary or your pharmacy records. This is the single most useful number in the whole process.
• Your current plan’s terms and, if your employer offers more than one, the full list of options with deductibles and out-of-pocket maximums.
• Employer specifics — whether the company contributes to an HSA or HRA, and whether the payroll deduction comes before taxes.

If you gather nothing else, gather the last two. A surprising number of people pick a plan by premium alone, then meet the deductible in month three.

Step-by-Step: Six Steps to Choosing a Plan

Run these six steps in order. Each one either narrows the list or tells you what a cheaper option would actually cost you. The whole thing takes an evening if you start with the material above.

Step 1: Confirm Your Enrollment Window and Eligibility

Verify the exact dates that apply to you before anything else, because the wrong window makes every other step useless. Marketplace plans for the coming year are sold through a fixed annual window on HealthCare.gov, and the federal government publishes the dates well ahead of time. Employer plans run on whatever schedule the company set, which in my experience is rarely the same as the Marketplace calendar.

Then check which system you are actually in. If you buy your own coverage, you use the Marketplace and eligibility is mostly about living in the US, having a qualifying immigration status, and not being eligible for employer coverage you could have. If you have an offer through work, that offer is usually cheaper than anything on the Marketplace, and you can only compare the two if the employer plan lets you waive it.

Life changes create a Special Enrollment Period, a separate window outside the annual one. Moving, a change in household size, a new diagnosis, losing other coverage, and changes to income that push you onto a different subsidy tier can all open one. If you are outside your window and nothing qualifies, coverage options narrow sharply, which is why dates come first.

Step 2: Estimate Your Expected Annual Cost

This is where the real decision happens. Add last year’s out-of-pocket spending, then project a similar year with an adjustment for any change you know about: a new pregnancy, a planned surgery, a new chronic condition, or a year where you were unusually lucky with your health.

Then compare each plan against that number rather than against the premium. A simple rule helps: if your projected spending is well under a plan’s deductible, that plan is effectively a premium-only plan, and you should judge it on premium alone. If your projected spending lands between the deductible and the out-of-pocket maximum, compare the coinsurance rates carefully, because that band is where the differences get expensive. If you expect to blow past the lowest out-of-pocket maximum, the highest maximum you can afford usually wins even with a higher premium.

A worked example makes it concrete. Say you spent about 3,000 dollars on care last year and expect something similar next year. One employer option is a 675 dollar deductible with a 5,500 dollar out-of-pocket maximum at a 110 dollar biweekly premium. Another is a 1,800 dollar deductible with a 5,900 dollar maximum at 85 dollars. A third is a 3,600 dollar deductible high-deductible plan with a 6,000 dollar maximum at 52 dollars, plus a 700 dollar employer contribution into an HSA.

Add the premiums across a year and the first option runs about 2,860 dollars, the second about 2,210, and the third about 1,352 plus 700 into the account. Under 3,000 dollars of expected spending, the third option wins comfortably, and the HSA contribution is a large part of why. Raise expected spending to 8,000 dollars and the ordering flips, because you hit each deductible and start paying coinsurance at very different rates. Same three plans, opposite answers, and only the spending estimate decides it.

Step 3: Check Coverage for What You Actually Need

Once you know which plans are financially plausible, look at what they cover. Every qualified ACA plan has to cover a standard set of essential health benefits, so you will not find a plan that simply omits maternity coverage or prescription drugs. Where plans differ is in cost sharing and in how treatment is managed, not in the core list.

Four things to check specifically. Prescription coverage: whether each drug is on the formulary, whether your exact dose and version are covered, and whether a cheaper generic or alternative requires a prior authorization. Your copay may be a flat amount or a percentage of the drug’s cost. Prior authorization: some plans require approval before imaging, surgery, or specialty medication, and if you skip it you can end up paying full price. Mental health parity: mental health and substance use treatment must be offered on equal terms to physical health, but actual cost sharing and network access vary plenty. Maternity and family coverage: check prenatal and delivery copays, the newborn’s automatic coverage period, and how dependents count against the family deductible.

The Summary of Benefits and Coverage is the legal document that spells all of this out in a standardized format, and every plan has one. It reads like a contract because it basically is one.

Step 4: Confirm the Provider and Hospital Network

Check the network before you check anything else about a plan you are considering. Networks change from year to year, and a doctor who was in-network last year may have dropped out without telling anyone directly.

Search each plan’s provider directory using the exact name and location of your doctors, your specialists, and the hospital you would actually go to. Call the office as well, because directories lag behind contracts. Ask three things: are you in-network for this plan for the coming year, do you need a referral to see a specialist, and is the specific facility you use covered, not just the health system it belongs to.

Then understand what out-of-network means for the plan type. On some, you pay full price for anything outside the network with no cap, and that exposure can be severe. Confirm that urgent and emergency care is covered even when you are out of network, since federal rules require emergency treatment to be covered in any plan. If you travel often or split time across states, check whether your network has coverage where you actually live.

Step 5: Compare Plan Types and Tax Treatment

Plan type governs how flexible your network choices are. On the Marketplace, plan type and metal tier are separate labels, and both matter. Plan type tells you the network rules. Metal tier tells you roughly what share of covered costs the plan pays.

Plan types compared

Plan type	Network rules	Out-of-network care	Account pairing	Best fit
HMO	Must use in-network providers; primary care referral usually required	Generally not covered, except emergency care	Pairs well with an FSA	Lower premium, predictable care, no travel
PPO	No referral needed; any in-network provider is fine	Covered, you pay more	Pairs well with an HSA	Frequent specialists, split households, travel
EPO	No referral needed, but network only	Generally not covered except emergency	Pairs well with an FSA	Want PPO convenience without out-of-network prices
High-deductible plan	Usually a PPO or EPO network	Varies by network rules	HSA eligible, often paired with one	Low care use, willing to pay cash for basics

Metal tiers work the other way, on cost sharing. Bronze plans pay roughly 60 percent of covered costs on average, silver 70, gold 80, and platinum 90. That is an average across a standard set of benefits, not a promise about your specific care, and it assumes you stay in-network and meet your deductible.

Metal tiers compared

Metal tier	Average share the plan pays	Typical fit
Bronze	About 60 percent	Young, healthy people who mostly want catastrophic protection
Silver	About 70 percent	The middle of the market and a common subsidy-eligible tier
Gold	About 80 percent	Regular care, prescriptions, or a managed chronic condition
Platinum	About 90 percent	Frequent or expensive care, maternity, ongoing treatment

A related idea is the deductible. A deductible is what you pay before the plan starts sharing, and on many Marketplace plans it applies only to what you pay out of pocket, while copays for office visits and some prescriptions can be due before you finish paying it down. Check whether the plan has a separate deductible for prescriptions. High-deductible plans are the ones paired with an HSA, which is why they show up as their own option in an employer menu even when the underlying network is a PPO.

On tax treatment, keep two ideas separate. A premium tax credit from the Marketplace reduces your monthly premium before the plan year starts, and how much you get depends on household size, income, and where you live. If your income has shifted, compare plans as net of the credit rather than at the sticker premium. A Health Savings Account is different: it pairs with a qualified high-deductible plan, the money is yours and it rolls over, and employer contributions can be a real tiebreaker when you are comparing an HDHP against a lower premium plan. A Flexible Spending Account can pair with more plan types but generally has use-it-or-lose-it rules, so it suits people who know they will spend the balance within the plan year.

Step 6: Make a Shortlist and Enroll Carefully

Line up your two or three finalists and record the same numbers for each in the same order: monthly premium, deductible, copay for a primary care visit, coinsurance rate, out-of-pocket maximum for an individual and for a family, your drug costs, and whether your doctors are in-network. A checklist with those columns makes the trade-offs visible in a way that reading six Summary of Benefits and Coverage documents does not.

Then pick the trade-off you can live with rather than the one that looks best on paper. A plan with a higher deductible is not wrong, it is a bet that you will spend less than the deductible. Make that bet deliberately, with the number from Step 2 in front of you.

Before you submit, check the effective date of the plan you are choosing, not just the enrollment date. On employer plans the new coverage often starts January 1 while the election window closes earlier. In the Marketplace, coverage generally starts January 1 for a plan chosen during the annual window, but current-year coverage can start as early as the first of the month if you qualify for a Special Enrollment Period.

Do not leave it to the last evening. If you currently hold Marketplace coverage, the plan you have can change its premiums, networks, and formulary, and existing members are often auto-renewed onto whatever that plan looks like next year. If your rate is rising and you want a different plan, you have to make that choice yourself before the window closes. Screenshot your confirmation and save your plan documents after you enroll, and check that your doctors and prescriptions are still listed correctly once your coverage goes live.

Common Mistakes That Cost People Money

Most expensive enrollment decisions are simple errors repeated by people who had every document they needed. These are the ones I would flag first.

• Choosing on premium alone. The cheapest premium is only cheap if you spend almost nothing. Fix: run your projected spending against each deductible before you look at anything else.
• Ignoring the network. A plan that covers nothing you use is not a bargain, and one out-of-network hospital stay can cost far more than the premium difference. Fix: confirm each doctor and facility in the directory for the coming plan year.
• Underestimating prescription costs. A drug can be covered and still carry a copay that is a large share of the cost, and a non-covered alternative may require prior authorization. Fix: look up each drug’s specific tier and dose in the current formulary.
• Misreading how the deductible works. Many plans do not credit a deductible against a copay for a routine office visit, and some carry a separate pharmacy deductible. Fix: read the cost-sharing section of the plan’s summary, not just the headline numbers.
• Skipping prior authorization rules. Approval requirements can apply to imaging, surgery, and specialty drugs, and a missed approval sometimes means paying the full claim. Fix: ask your plan in writing what requires approval for care you expect this year.
• Doing nothing and letting coverage auto-renew. Silence keeps you on the same plan at whatever price it carries next year, and the network may have changed underneath you. Fix: submit an election, even if it is the plan you already have.

One more trap worth naming. If both you and your spouse have employer coverage, you are usually asked to certify that one of you has it. Declining coverage you will not use, and showing it as your primary plan, is one of the more expensive annual mistakes.

Frequently Asked Questions

Start with one number: what you spent on healthcare last year, and what you expect to spend this year. Everything else in this guide is a way of matching that number to a plan, checking that your doctors and drugs fit, and filing the election before your deadline.

For official plan details and eligibility rules, HealthCare.gov and your state marketplace are the place to start, and an HSA-eligible or FSA-eligible account question is worth a quick word with your benefits administrator before you commit.