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To choose the right health plan during open enrollment, compare plans on total annual cost (premium plus expected out-of-pocket), not the monthly premium alone, then confirm your doctors are in-network and your prescriptions are covered. Most employer windows run October through mid-November, with coverage effective January 1, 2027. Most people spend under 30 minutes and just auto-renew. Spending an extra hour can save $1,000 to $3,000. Here is how to do it right.
Key Takeaways
- Never compare by premium alone; add expected out-of-pocket costs for the true annual cost.
- An HDHP plus HSA is often the cheapest option for healthy people thanks to the triple tax benefit.
- Check the formulary and provider network before enrolling, since either can erase premium savings.
- Don’t auto-renew blindly, because premiums, networks, and deductibles change every year.
Why Is Auto-Renewing a Mistake?
Auto-renewing last year’s plan is convenient but often costly. Plans change every year: premiums rise, networks narrow, drug formularies shift, and deductibles move. The plan that was optimal last year may not be this year, so 30 minutes of comparison is well spent.
How Do You Estimate Your Healthcare Usage?
Before comparing plans, estimate how much care you realistically expect next year. Ask yourself how many primary care visits you typically have (average is 2 to 3), whether you have specialist visits, ongoing prescriptions, or planned procedures, and whether any major events are coming (pregnancy, surgery, starting a family). That estimate tells you whether a low-premium, high-deductible plan or a higher-premium, lower-deductible plan fits your situation.
How Do You Calculate a Plan’s True Annual Cost?
Never compare on monthly premium alone. The true annual cost is annual premium plus expected out-of-pocket costs. Here is an example for a healthy person with 3 doctor visits and 1 prescription a year, using 2027 limits:
| Plan A (PPO) | Plan B (HDHP) | |
|---|---|---|
| Monthly premium | $280 | $140 |
| Annual premium | $3,360 | $1,680 |
| Deductible | $500 | $2,800 |
| Expected out-of-pocket | ~$300 | ~$400 |
| True annual cost | $3,660 | $2,080 |
| HSA tax savings (HDHP only) | N/A | -$990 (22% bracket, $4,500 contribution) |
| Net annual cost | $3,660 | $1,090 |
For a healthy person, the HDHP saves over $2,500 a year once HSA tax savings are counted. The math flips for someone with high medical use. See our guide on premiums, deductibles, copays, and coinsurance.
Should You Choose the HDHP Plus HSA?
If your employer offers a High Deductible Health Plan paired with an HSA, it deserves serious consideration for anyone generally healthy. For 2027, you can contribute up to $4,500 (self-only) or $9,000 (family) to an HSA, and an HDHP must have a deductible of at least $1,750 self-only or $3,500 family. The triple tax advantage (pre-tax contributions, tax-free growth, and tax-free withdrawals for medical costs) makes the HDHP plus HSA one of the best financial tools available.
The risk: a major medical event in an HDHP year means paying a higher deductible first. Mitigate it by funding your HSA to cover your full deductible before spending it on routine care. Treat the HSA as a medical emergency fund first and an investment account second.
How Do You Check Prescriptions and Doctors?
If you take regular medications, verify each one is on the plan’s formulary and at what tier (tier 1 is cheapest, tier 4 to 5 the most expensive). A lower-premium plan that puts your drug at tier 4 can cost more annually than a slightly pricier plan with it at tier 2.
Likewise, confirm your preferred doctors and specialists are in-network under any plan you are weighing. An out-of-network specialist visit can cost several times more than the same visit in-network, wiping out premium savings fast. Check formularies and networks on the insurer’s website or your benefits portal before the window closes.
What Other Benefits Should You Review?
- Dental and vision: often underused. If you need dental work or glasses, confirm the plan covers it before the year starts.
- Healthcare FSA: pre-tax money for medical costs, with a 2026 limit of $3,300 (the 2027 figure is set by the IRS in the fall). Unlike HSAs, FSAs are use-it-or-lose-it, so elect only what you will spend.
- Dependent Care FSA: the limit rose to $7,500 (married filing jointly or single; $3,750 if married filing separately) under the OBBBA, the first permanent increase in decades. With childcare costs, maxing it saves roughly $1,650 to $1,800 in federal taxes alone.
- Life and disability: many employers let you add supplemental coverage during open enrollment without medical underwriting, so no health exam. If you have dependents or significant debt, check whether your coverage is adequate.
What Are the Key Dates?
- Employer open enrollment: typically October 1 to November 15, 2026 (varies by employer).
- ACA Marketplace open enrollment: November 1, 2026 to January 15, 2027.
- Coverage effective: January 1, 2027.
FAQ
How do I pick the best health insurance plan?
Compare plans on total annual cost (premium plus expected out-of-pocket), not premium alone, then confirm your doctors are in-network and your prescriptions are on the formulary at a reasonable tier.
Is an HDHP with an HSA worth it?
For healthy people who do not use much care, usually yes. The lower premium plus the HSA’s triple tax advantage often makes it the cheapest net option. It is riskier if you expect a major medical event.
What is the HSA contribution limit for 2027?
$4,500 for self-only coverage and $9,000 for family, with an extra $1,000 catch-up if you are 55 or older. The HDHP minimum deductible is $1,750 self-only or $3,500 family.
What is the dependent care FSA limit now?
$7,500 for married filing jointly or single filers ($3,750 if married filing separately), raised under the OBBBA. It can save roughly $1,650 to $1,800 a year in federal taxes if you have childcare costs.
Bottom Line
Choose your plan on total annual cost, not the premium, and check that your doctors and prescriptions are covered before you enroll. For healthy people, an HDHP paired with an HSA is often the cheapest and most tax-efficient choice, and reviewing FSAs and supplemental coverage can add more savings. To go deeper, see our guides on health insurance costs, premium vs deductible vs copay vs coinsurance, and the insurance you actually need.
This article is for educational and informational purposes only and does not constitute health insurance, tax, or financial advice. Plan details, limits, and rules vary by employer and insurer and change yearly. Confirm current figures with your benefits administrator or at healthcare.gov.
