Quick Answer
Medicare beneficiaries CAN use prescription discount cards like GoodRx, RxSaver, and manufacturer coupons - but NOT at the same time as Medicare Part D. You must choose one or the other for each prescription fill. Using a discount card instead of Part D means that purchase does NOT count toward your Part D deductible or out-of-pocket maximum. In 2026, with the new $2,000 Part D out-of-pocket cap, it's often better to use Part D for expensive drugs and discount cards only for cheap generics not covered by your plan.
Coverage Comparison by Plan Type
| Plan Type | Coverage | Notes |
|---|---|---|
| Medicare Part D | Covers formulary drugs; counts toward deductible and OOP max | $2,000 OOP cap in 2026; best for expensive brand-name drugs and high-cost medications |
| GoodRx / Discount Cards | Negotiated discounts at pharmacies; no insurance required | Cannot be combined with Part D; purchase does NOT count toward deductible or OOP max; best for cheap generics |
| Manufacturer Coupons (Copay Cards) | Manufacturer pays part of your drug cost | Cannot be used with Medicare Part D (federal anti-kickback statute); may be used instead of Part D |
| Extra Help (LIS) | Federal subsidy reducing Part D costs for low-income beneficiaries | Copays capped at $4.90 (generic) / $12.15 (brand) in 2026; better than most discount cards for eligible beneficiaries |
Understanding Your Coverage Options
Can Medicare Beneficiaries Use GoodRx?
Yes - Medicare beneficiaries can use GoodRx and other prescription discount programs. However, you cannot use GoodRx and your Medicare Part D coverage for the same prescription at the same time.
When you use GoodRx, you are paying cash for your prescription using GoodRx's negotiated price. The transaction is not processed through Medicare at all.
What It Covers
- GoodRx can be used at most major pharmacies (CVS, Walgreens, Walmart, Kroger, etc.)
- GoodRx discounts can be up to 80% off retail price for some generic drugs
- You can use GoodRx for drugs not on your Part D formulary
- You can use GoodRx when the GoodRx price is lower than your Part D copay
- Free to use - no membership fee required for basic GoodRx discounts
What It Doesn't Cover
- GoodRx purchases do NOT count toward your Part D deductible or out-of-pocket maximum
- You must ask the pharmacist to use GoodRx instead of your Medicare card - they cannot process both
- GoodRx Gold (paid membership) offers additional savings for some drugs
GoodRx vs. Part D: The $2,000 Cap Tradeoff
In 2026, Part D has a $2,000 out-of-pocket cap. If you use GoodRx for expensive drugs, those costs don't count toward the cap. For high-cost brand-name drugs, using Part D is usually better so you reach the cap faster. Use GoodRx only for cheap generics where Part D copays are higher.
Manufacturer Coupons and Copay Cards
Pharmaceutical manufacturers often offer copay cards or coupons that reduce the cost of brand-name drugs. However, these programs have strict rules for Medicare beneficiaries.
What It Covers
- Manufacturer copay cards CAN be used if you pay cash (not using Part D) for the prescription
- Some manufacturers offer patient assistance programs (PAPs) for low-income Medicare beneficiaries - these are separate from copay cards and may be used with Medicare
- Medicare Drug Price Negotiation (IRA): 10 drugs have negotiated prices in 2026, reducing costs for Part D enrollees
What It Doesn't Cover
- Manufacturer copay cards CANNOT be used with Medicare Part D - this violates the federal anti-kickback statute
- Using a manufacturer coupon with Part D is illegal and can result in loss of Medicare benefits
- Copay cards used instead of Part D do NOT count toward your deductible or OOP max
Manufacturer Coupons ++ Part D == Illegal
Using a manufacturer copay card or coupon in combination with Medicare Part D violates the federal anti-kickback statute. You can use a coupon instead of Part D (paying cash), but never alongside it.
When to Use a Discount Card vs. Part D
Choosing between a discount card and Part D depends on the drug cost, your plan's formulary, and how close you are to the $2,000 out-of-pocket cap.
What It Covers
- Use Part D when: The drug is expensive (brand-name, specialty); you want the cost to count toward the $2,000 OOP cap; the drug is on your formulary with a reasonable copay
- Use GoodRx/discount card when: The drug is a cheap generic; it's not on your Part D formulary; the GoodRx price is lower than your Part D copay; you have already hit your $2,000 OOP cap
- Use Extra Help (LIS) when: You qualify (income below ~$2,015/month); LIS copays ($4.90 generic / $12.15 brand) are lower than GoodRx prices
- Use Patient Assistance Programs (PAPs) when: You are low-income and the manufacturer offers free or reduced-cost drugs directly
Other Ways to Save on Prescriptions with Medicare
Beyond discount cards and coupons, Medicare beneficiaries have several other tools to reduce prescription drug costs.
What It Covers
- Extra Help (Low Income Subsidy): Caps copays at $4.90 (generic) / $12.15 (brand) in 2026 for eligible beneficiaries
- Preferred pharmacy networks: Using your plan's preferred pharmacies can significantly reduce copays
- Mail-order pharmacy: 90-day supplies through mail order are often cheaper than 30-day retail fills
- Formulary tier exceptions: Ask your doctor to request a tier exception if a lower-tier alternative isn't appropriate
- Medicare Drug Price Negotiation (IRA): 10 drugs have negotiated prices in 2026; more added each year
- $35 insulin cap: Insulin is capped at $35/month for Part D enrollees in 2026
$35 Insulin Cap
Under the Inflation Reduction Act, insulin is capped at $35/month for Medicare Part D enrollees in 2026. If you use insulin, always use Part D rather than a discount card.
Prescription Savings Options for Medicare Beneficiaries
| Option | Can Use with Medicare? | Counts Toward OOP Cap? | Best For |
|---|---|---|---|
| Medicare Part D | Yes (primary) | Yes ($2,000 cap in 2026) | Expensive brand-name and specialty drugs |
| GoodRx (instead of Part D) | Yes (instead of Part D) | No | Cheap generics with high Part D copays |
| Manufacturer Copay Card (cash) | Yes (instead of Part D only) | No | Brand-name drugs when paying cash |
| Manufacturer Copay Card (with Part D) | No - illegal | N/A | Never - violates anti-kickback statute |
| Extra Help (LIS) | Yes (with Part D) | Yes | Low-income beneficiaries (income ≤ ~$2,015/mo) |
| Patient Assistance Programs | Yes (separate from Part D) | No | Very low-income; free drugs from manufacturer |
✦ Important Rules & Exceptions
The $2,000 Part D Cap Changes the Math
Starting in 2025, Part D has a $2,000 annual out-of-pocket cap. This makes using Part D more valuable for expensive drugs - once you hit the cap, Medicare pays 100%. Using GoodRx for expensive drugs means you never reach the cap and lose this protection.
Use Part D for expensive drugs to reach the $2,000 OOP cap faster.
Insulin is Always Better through Part D
Insulin is capped at $35/month for Part D enrollees under the Inflation Reduction Act. GoodRx prices for insulin are typically higher than $35. Always use Part D for insulin.
Negotiated Drug Prices (IRA)
The Inflation Reduction Act requires Medicare to negotiate prices for certain high-cost drugs. In 2026, 10 drugs have negotiated prices available through Part D. These negotiated prices are often lower than GoodRx prices for those specific drugs.
GoodRx Gold Membership
GoodRx Gold is a paid membership ($9.99/month individual, $19.99/month family) that offers lower prices than the free GoodRx card at some pharmacies. It may be worth it for beneficiaries who frequently use GoodRx for generics not covered by their Part D plan.
✦ 2026 Prescription Drug Cost Updates
Part D $2,000 Out-of-Pocket Cap (IRA)
PassedThe Inflation Reduction Act capped Part D out-of-pocket costs at $2,000/year starting in 2025. This makes using Part D more valuable for expensive drugs.
Medicare Drug Price Negotiation - 10 Drugs in 2026
PassedCMS negotiated prices for 10 high-cost drugs take effect in 2026, including Eliquis, Jardiance, Xarelto, and others. Part D enrollees pay these lower negotiated prices.
$35 Insulin Cap Continues in 2026
PassedThe $35/month insulin cap for Part D enrollees continues in 2026 under the Inflation Reduction Act. Always use Part D for insulin rather than discount cards.
Prescription Savings Decision Checklist
Use this checklist to decide whether to use Part D or a discount card for each prescription.
Decision Steps
- Check if the drug is on your Part D formulary and what tier it's on
- Compare your Part D copay vs. the GoodRx price for the drug
- For expensive brand-name drugs: use Part D to count toward the $2,000 OOP cap
- For cheap generics with high copays: use GoodRx or another discount card
- Never use a manufacturer copay card with your Part D plan - it's illegal
- If you qualify for Extra Help: use Part D (LIS copays are usually lower than GoodRx)
- For insulin: always use Part D ($35/month cap)
- Apply for Extra Help at SSA.gov if your income is below ~$2,015/month
✦ Frequently Asked Questions
David Haass
AuthorDavid Haass is a licensed insurance agent and Medicare specialist at MedicareFAQ.com.
Ashlee Zareczny
ReviewerAshlee Zareczny is the Compliance & Editorial Manager at MedicareFAQ.