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Retirement Plans | 12 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Retirement Plans | Retirement Plans Defined Benefit Retirement Plans The Company has a frozen qualified defined benefit pension plan (the “Qualified Plan”) and a nonqualified defined benefit pension plan (the “Nonqualified Plan”), and recognizes their funded status, measured as the difference between the fair value of the plan assets and the projected benefit obligation, in Other assets or Accounts payable and other accrued liabilities in the Consolidated Balance Sheets, depending on the funded status of each plan. The Qualified Plan assets, which are managed in a third-party trust, primarily consist of a diversified blend of approximately 90% debt securities and 10% equity investments and had a total fair value of $29.6 million and $30.9 million as of September 30, 2023 and 2022, respectively. All Qualified Plan assets fall within Level 2 of the fair value hierarchy. The benefit obligation associated with the Qualified Plan will vary over time only as a result of changes in market interest rates, the life expectancy of the plan participants, and benefit payments, since the accrual of benefits was suspended when the Qualified Plan was frozen in 2006. The benefit obligation was $24.6 million and $26.3 million and the discount rate assumption used in the measurement of this obligation was 5.80% and 5.40% as of September 30, 2023 and 2022, respectively. Related to the Qualified Plan, the Company’s net pension obligation was in a funded status of $5.0 million and $4.6 million as of September 30, 2023 and 2022, respectively. The Nonqualified Plan assets had a total fair value of less than $0.1 million as of September 30, 2023 and 2022. The benefit obligation associated with the Nonqualified Plan will vary over time only as a result of changes in market interest rates, the life expectancy of the plan participants, and benefit payments. There are no active participants in the Nonqualified plan. The benefit obligation was $1.1 million and $1.2 million as of September 30, 2023 and 2022, respectively. Related to the Nonqualified Plan, the Company’s unfunded pension obligation was $1.1 million and $1.2 million as of September 30, 2023 and 2022, respectively. The Company recognized a net periodic benefit cost of $0.3 million for the year ended September 30, 2023, and a net periodic benefit of $0.1 million and $0.3 million for the years ended September 30, 2022 and 2021, respectively. The expected long-term return on plan assets assumption was 4.15% for 2023. The Company made contributions of $0.1 million to the plans in the years ended September 30, 2023 and 2022. The Company complies with minimum funding requirements. The estimated undiscounted future benefit payments are expected to be $2.1 million in 2024, $2.0 million in 2025, $2.0 million in 2026, $2.1 million in 2027, $2.1 million in 2028, and $9.9 million in 2028 through 2033. Defined Contribution Retirement Plans The Company offers participation in the StoneX Group Inc. 401(k) Plan (“401(k) Plan”), a defined contribution plan providing retirement benefits to all domestic full-time non-temporary employees who have reached 21 years of age. Employees may contribute from 1% to 80% of their annual compensation to the 401(k) Plan, limited to a maximum annual amount as set periodically by the Internal Revenue Service. The Company makes matching contributions to the 401(k) Plan in an amount equal to 62.5% of each participant’s eligible elective deferral contribution to the 401(k) Plan, up to 8% of employee compensation. Matching contributions vest, by participant, based on the following years of service schedule: less than two years – none, after two years – 33%, after three years – 66%, and after four years – 100%. U.K. based employees of StoneX Group are eligible to participate in a defined contribution pension plan. The Company contributes double the employee’s contribution up to 10% of total base salary for this plan. For this plan, employees are 100% vested in both the employee and employer contributions at all times. For fiscal years ended September 30, 2023, 2022, and 2021, the Company’s contributions to these defined contribution plans were $19.2 million, $16.9 million and $15.2 million, respectively.

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