Medicare Drug Cost Checker (2026)

It is a planning ballpark, not a quote. We average the tier across the five largest national Part D plans (UnitedHealthcare, Humana, Cigna, Wellcare, Aetna). Your actual plan may have different tier placement and copays. Once you run the full wizard with your ZIP, we pull the exact formulary for your county.

Yes, but the number changes by plan year. The Inflation Reduction Act set the 2025 Medicare Part D out-of-pocket cap at $2,000; CMS set the 2026 Part D out-of-pocket threshold at $2,100. Once you hit the plan-year threshold, the plan covers 100% of covered drug costs for the rest of the calendar year. Plans must also offer a monthly smoothing program so you can spread costs across the year.

Tier 5 specialty drugs (Humira, Enbrel, Stelara, oncology drugs) use coinsurance rather than copay — typically 25-33% of the drug cost. On a $5,000/month drug that can be $1,650/month, which means you hit the $2,100 annual threshold in month two. The cap is your protection on those.

We track the top 60 most-prescribed Medicare drugs. If yours is not listed, run the full wizard or call us — we have access to the complete CMS Plan Finder formulary database that covers all ~4,000 drugs on the major plans.