Prescription Drug Price Comparison: Medicare Part D vs. Cash Price vs. Generic — Free
Figures and guidance last verified against official sources in July 2026.
Quick Answer
The cash price at a pharmacy using a discount card is sometimes lower than your Medicare Part D copay — especially for generic drugs. In 2026, Part D copays range from $0-$12 (Tier 1 generic) to $100+ (Tier 4 non-preferred brand) before the $2,000 annual out-of-pocket cap.
| Tier | Drug Category | Typical 2026 Copay |
|---|---|---|
| Tier 1 | Preferred Generic | $0 – $12 |
| Tier 2 | Non-Preferred Generic | $5 – $20 |
| Tier 3 | Preferred Brand | $35 – $50 |
| Tier 4 | Non-Preferred Brand | $75 – $100+ |
| Tier 5 | Specialty Tier | 25% – 33% Coinsurance |
Note: In 2026, total annual out-of-pocket prescription costs are capped at $2,000 per enrollee under Part D.
Generic vs. Brand Savings Estimator
FDA data indicates generic medications average 80% to 85% lower costs than brand-name equivalents.
Important Cash vs Insurance Tradeoff:
Using discount cards (like GoodRx) can sometimes beat your plan copay for low-tier generics. However, cash payments do not count toward your $2,000 annual Part D out-of-pocket maximum.
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Frequently Asked Questions
Can a GoodRx discount card price be lower than my Medicare Part D copay?
Yes. For generic drugs, cash prices via discount cards can occasionally be lower than plan copays. However, discount card purchases do not count toward your Part D deductible or out-of-pocket maximum.
What are the 2026 Medicare Part D copay tiers?
Standard plan tiers generally range from Tier 1 (Preferred Generic, $0-$12) to Tier 5 (Specialty, 25%-33% coinsurance).
What is the 2026 Medicare Part D out-of-pocket cap?
Starting in 2026, out-of-pocket prescription costs under Medicare Part D are capped at $2,000 annually per individual under the Inflation Reduction Act.
How much less does a generic drug cost compared to the brand-name version?
FDA data shows generic drugs cost an average of 80% to 85% less than their brand-name equivalents while containing identical active ingredients.
Can I use a GoodRx coupon if I have Medicare?
Yes, but you must use it instead of your Medicare Part D coverage for that specific transaction, not in combination with it.
What does Extra Help pay for my drug costs in 2026?
Full Extra Help enrollees pay no more than $4.90 for generics and $12.15 for brand-name drugs per prescription fill in 2026, with zero deductible.
How do I find out which tier my drug is on my plan?
Check your plan’s official Formulary document, call the member services phone number on your prescription card, or search medicare.gov/plan-compare.
What is the Medicare.gov drug price lookup and how do I use it?
It is an official federal online tool where you enter your specific medications and dosage to compare total annual costs across local Part D plans.
Other Free Medicare Drug Cost Tools
Extra Help (Part D Low-Income Subsidy) Calculator →
Check if you qualify for federal Extra Help to lower your Part D drug premiums to near zero.
Medicare Donut Hole & Coverage Gap Calculator →
Calculate your out-of-pocket drug costs before and after hitting the 2026 Part D $2,100 cap.
Medicare Savings Programs Estimator →
See if your income qualifies you for a state program to pay your Medicare Part B premium.
About This Educational Estimate: This tool is for educational purposes only. Seniors Audit uses the official formulas published by Centers for Medicare & Medicaid Services (CMS), but results are estimates based on the information you entered. Rules, rates, and eligibility thresholds change annually and vary by individual circumstance.
Always verify your specific result directly with Centers for Medicare & Medicaid Services (CMS) at 1-800-633-4227 or at www.medicare.gov before making enrollment, coverage, or financial decisions.
If you have Medicare questions, a free SHIP counselor in your state can review your specific situation at no cost — find yours at shiphelp.org.
Seniors Audit is independent and not affiliated with any government agency or insurance company. We are not affiliated with, endorsed by, or connected to any government agency, insurance company, or financial services firm. All calculations use the official formulas and current figures published by the agencies listed above. We do not receive payment for referrals, leads, or any action taken by visitors to this site. Last reviewed: July 2026.