If you use insulin, the drug benefit may matter more to you than almost any other part of a health plan. Two plans can list the same insulin and still charge very different amounts.
As of October 18, 2026, there is no federal cap on insulin costs for ACA or job-based plans, and Florida has no state cap. Check your plan's drug list.
This guide shows how to read a drug list, what "preferred" means, and how costs can change by plan type. It ends with a checklist you can use for any plan.
Start with the formulary
A formulary is a plan's list of covered drugs. HealthCare.gov's glossary says it's also called a drug list.
A drug list is a starting point, not the full story. It may not show every rule, limit, or cost for your plan. The plan's own benefit summary tells you what you will pay.
Drug lists can also change during the year. For example, a brand-name drug may move to a higher tier when a generic version comes out.
Preferred vs. non-preferred insulin
Many drug lists sort drugs into tiers, such as generic, preferred brand, non-preferred brand, and specialty. Drugs in a non-preferred tier can cost more.
Insulin can show up in more than one tier on the same list. For example, a brand insulin and a biosimilar version of it can sit in different tiers.
If your insulin is in a higher tier, ask your doctor whether a preferred option would work for you. Don't change your insulin without talking to your doctor.
How the cost changes by plan type
Plans pay for drugs in different ways. Here is a made-up example of how the same drug might cost different amounts. Real plans vary.
| Tier (example only) | Made-up copay plan | Made-up HSA plan |
|---|---|---|
| Generic | $12 copay | Full cost until the deductible, then a share |
| Preferred brand | $42 copay | Full cost until the deductible, then a share |
| Non-preferred | $95 copay | Full cost until the deductible, then a larger share |
| Specialty | $350 copay | Full cost until the deductible, then a share |
Example only. These are not real plan prices.
Copay plans. You pay a set amount per prescription. The amount depends on the drug's tier. Some plans apply the deductible to drugs first, and some don't.
HSA plans. HSA plans have higher deductibles. Until you meet the deductible, you generally pay the drug's cost yourself. After that, you often pay a share of the cost, called coinsurance. Ask whether a plan covers any drugs, such as insulin, before the deductible. Under IRS rules, an HSA plan may choose to cover insulin before the deductible (IRS Notice 2019-45). Ask each plan. A tax pro can help with HSA rules.
Discount cards. Some plans that aren't ACA plans offer drugs only through a discount card. A discount card is not insurance. The plan doesn't pay for the drug.
Some plans don't cover drugs from pharmacies outside their network. Ask which pharmacies are in network.
Don't forget your supplies
Insulin isn't the only thing to check. Ask about syringes, pen needles, glucose meters, and test strips. Supplies can sit in different tiers too.
Watch for these rules
- Prior authorization. Some plans need to approve a drug before they will cover it.
- Day supply. A 30-day and a 90-day supply can cost different amounts, and mail order may differ from retail.
- Mid-year changes. A drug's tier can change during the year.
Your insulin checklist
Before you enroll in any plan, get answers to these questions. Write them down.
- Is my exact insulin on this plan's drug list?
- Is it preferred, non-preferred, or specialty?
- Do I pay a copay, or coinsurance after a deductible?
- If there's a deductible, is any drug covered before it?
- Is the drug benefit insurance, or only a discount card?
- Are my pen needles, syringes, meter, and test strips covered?
- Does my insulin need prior authorization?
- What will a 30-day and a 90-day supply cost, at retail and by mail?
- Is my pharmacy in the network?
Get the answers from the plan. Confirm your specific insulin before you enroll.
How we can help
Daniels Health Advisors is licensed in 30+ U.S. states. We can help you compare plans and look up each plan's drug list with you. We can't promise how a plan will cover a drug. The plan decides.
For more on comparing plans, see our guide on how to compare health insurance plans.