In 2025, ** percent of workers in the U.S. were covered in a prescription drug plan with four or more tiers of cost sharing. A further ** were covered in a three tier plan. Cost-sharing tiers are commonly defined as a health plan placing a prescription drug on a formulary or preferred drug list that divides drugs into groups with varying cost-sharing or management.
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KFF. (October 22, 2025). Distribution of covered workers facing different cost-sharing formulas for prescription drug benefits in the U.S. from 2017 to 2025 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/1618762/cost-sharing-for-prescription-drug-benefits-us/
KFF. "Distribution of covered workers facing different cost-sharing formulas for prescription drug benefits in the U.S. from 2017 to 2025." Chart. October 22, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/1618762/cost-sharing-for-prescription-drug-benefits-us/
KFF. (2025). Distribution of covered workers facing different cost-sharing formulas for prescription drug benefits in the U.S. from 2017 to 2025. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/1618762/cost-sharing-for-prescription-drug-benefits-us/
KFF. "Distribution of Covered Workers Facing Different Cost-sharing Formulas for Prescription Drug Benefits in The U.S. from 2017 to 2025." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 22 Oct 2025, /statistics/1618762/cost-sharing-for-prescription-drug-benefits-us/
KFF, Distribution of covered workers facing different cost-sharing formulas for prescription drug benefits in the U.S. from 2017 to 2025 ÌÇÐÄÆƽâ°æ, /statistics/1618762/cost-sharing-for-prescription-drug-benefits-us/ (last visited July 29, 2026)
Distribution of covered workers facing different cost-sharing formulas for prescription drug benefits in the U.S. from 2017 to 2025 [Graph], KFF, October 22, 2025. [Online]. Available: /statistics/1618762/cost-sharing-for-prescription-drug-benefits-us/
