This bill excludes compensation paid to clinical trial participants from federal income taxes and protects it from counting against eligibility for federal assistance programs. Individuals who receive payments for participating in approved clinical trials or for reimbursement of trial-related expenses will no longer report these amounts as taxable income. The exemption also ensures that clinical trial compensation does not affect eligibility for needs-based federal benefits like Medicaid, food assistance, or housing programs. The tax exemption applies to payments made after December 31, 2025, making it retroactively effective to the start of 2026. This change aims to remove financial disincentives that might prevent lower-income individuals from participating in medical research.