With rebates becoming a focal point in pharmacy benefit design, point of sale (POS) rebate dynamics have become a growing area of interest as drug costs rise and PBM regulatory scrutiny intensifies.
POS rebates move a portion of manufacturer rebate value directly to members at the pharmacy counter, reducing their out-of-pocket (OOP) costs for high-cost brand medication. This approach can improve affordability for members while introducing financial and contractual control for plans through clearer visibility into net pricing and more transparent rebate flows. Understanding how POS rebates work, their impact, and when they make strategic sense to implement can help plan sponsors make informed decisions around their PBM contract.
What Are POS Rebates?
POS rebates apply part of the expected manufacturer rebate immediately at the pharmacy counter, reducing the member’s OOP cost for brand medications. While POS rebates lower the amount a member pays, they do not change the underlying plan cost, since the claim still processes at the full plan‑negotiated price. This tradeoff can lead to a slight increase in plan costs by reduced rebates back to the plan sponsor.
POS rebates offer an alternative to the traditional rebate model for plan sponsors, who often continue using traditional rebates because they maximize plan‑level savings and support premium strategy. Traditional rebates are paid months after a prescription is filled, so members pay the cost share based on the full list price at the counter. By comparison, POS rebates shift the timing of when rebate value is applied, giving members immediate cost relief, though plans may see small changes in how rebate dollars flow.
Some plans and stakeholders remain cautious about POS rebates due to the potential for increased plan costs, the need for contractual changes, and impacts on PBM guarantees.
Why POS Rebates Matter
Today’s rebate system can create disconnects between list prices and what members actually pay. Members who fill costly brand medications often face higher upfront OOP costs even though their prescriptions generate significant rebate value downstream to the plan sponsor. POS rebates offer a way to bring some of that value forward to the member, supporting affordability and potentially improving adherence for members taking high‑cost drugs.
How POS Rebates Work
The rebate, or a portion of it, is applied immediately at the pharmacy to reduce the patient’s OOP cost at the time of fill. POS rebates are structured as either full pass‑through (100%) or employer‑designated pro‑rated percentages, depending on the PBM’s capabilities. Because the PBM has not yet received the rebate payment from the manufacturer, the PBM must front the money and act as a temporary lender. This creates financial risk, so PBMs often apply only an estimated percentage of the expected rebate rather than providing a full dollar‑for‑dollar credit. Before implementing POS rebates, PBMs should be able to model different rebate percentage scenarios so a plan sponsor can understand the full impact.
Once the manufacturer pays the rebate, the PBM reconciles the difference, but the adjustment occurs at the plan sponsor level rather than the patient level.
POS Rebate Impact
Industry
POS rebates are becoming more common as regulatory pressure around transparency and PBM practices grow. Federal and state legislation, along with FTC activity, is pushing the industry toward clearer rebate structures and greater pricing visibility. The FTC’s agreement with Express Scripts (ESI) requires a standard formulary option with lowest net cost pricing and POS rebates. Some PBMs are signaling a shift toward full rebate pass-through and POS-oriented models, with ESI planning to phase out traditional manufacturer rebates for fully insured plans in 2027 and offer for all other commercial clients by 2028.
Plan Sponsors
While POS rebates are optional, plan sponsors must balance the higher savings from traditional rebates with the improved member affordability POS rebates provide. This tradeoff can lead to a slight increase in plan costs. Because PBMs front the rebate amounts at the point of sale, adopting POS rebates will require contract changes, including potential adjustments to guarantees. Plans that use rebates to support premiums may also need to reassess their budget strategy.
Members
Members on brand medications in HDHPs may see immediate OOP reductions with POS rebates, improving affordability for high‑cost therapies and potentially supporting better adherence. Members with flat copays, however, are unlikely to see a benefit.
Key Considerations
When evaluating whether POS rebates align with your plan strategy, consider the following factors:
- Determine how rebate dollars support your overall budget and premium strategy.
- Request PBM modeling for different POS rebate scenarios (such as 80% vs. 90% of estimated rebates).
- Decide whether your focus is maximizing plan savings or improving member affordability.
- Monitor legislation, consult legal counsel as needed, and consider a rebate audit to confirm PBM adherence.
As the pharmacy landscape continues to evolve, POS rebates will remain an important consideration in plan strategy discussions. A clear understanding of how these programs function can help employers and consultants navigate upcoming changes with confidence.
Truveris is a pharmacy cost containment company dedicated to reducing pharmacy costs and driving transparency for employers and benefit consultants. Our proprietary, data-driven technology and deep industry expertise empower smarter pharmacy benefit decisions through contract optimization and PBM oversight. Independent and unbiased, Truveris delivers measurable savings and accountability across every pharmacy program.
