A supplemental needs trust is a legal arrangement that holds money or property for a person with a disability without counting those assets against eligibility for means-tested public benefits such as Medicaid and Supplemental Security Income (SSI), as long as the funds are used under the trust's rules.

The basic idea is protection with limits. Money in the trust is meant to pay for extras that improve quality of life - such as certain therapies, equipment, transportation, personal care, education, or recreation - rather than replacing benefits those programs already cover. The trust is managed by a trustee, who controls distributions and must follow the trust document and applicable law. In many cases, a first-party trust funded with the disabled person's own money must meet the requirements of 42 U.S.C. § 1396p(d)(4)(A), part of the federal Medicaid statute.

This can matter a great deal after a personal injury settlement or verdict. If an injured person receives funds outright, the money may push them over SSI or Medicaid resource limits and interrupt benefits. Placing recovery funds into a properly drafted supplemental needs trust can help preserve access to medical coverage and long-term supports while still allowing the person to benefit from the compensation. Because mistakes in trust language, timing, or distributions can trigger a benefits problem, these trusts are often coordinated with guardianship, estate planning, and settlement decisions.