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Marine Corps MOS · Support

3402 Finance Officer

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

A finance officer disburses, collects, accounts for, and safeguards public funds as an agent of the U.S. Treasury. The officer manages military pay, travel entitlements, expenditure reporting, and internal controls while directing finance offices or deployed disbursing detachments.

Minimum clearance: Secret

Core Skills

  • Public fund custody and disbursement controls
  • Military pay and travel entitlement computation
  • Expenditure and collection reporting to accounting systems
  • Fiscal regulation interpretation for deployed operations

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Treasurers and Controllers

Safeguarding public funds, directing disbursements, and establishing internal controls transfer directly to civilian fund custody and payment oversight.

How to prepare: Compare several treasury/controller openings' accounting education and financial-management experience requirements against your education and military responsibilities, identifying gaps in civilian accounting, financial reporting, and cash management. These are experienced financial-management targets, so use that assessment to decide whether to apply directly or first pursue targeted coursework or an intermediate accounting role.

What the civilian work involves
  • Delegate authority for the receipt, disbursement, banking, protection, and custody of funds, securities, and financial instruments.
  • Monitor financial activities and details, such as cash flow and reserve levels, to ensure that all legal and regulatory requirements are met.
  • Receive, record, and authorize requests for disbursements in accordance with company policies and procedures.
Civilian tools and software (examples)
  • Microsoft Excel
  • Intuit QuickBooks
  • SAP software

Accountants and Auditors

Reporting expenditures and collections, interpreting fiscal regulations, and establishing finance-office controls provide a foundation for accounting-system review and compliance auditing.

How to prepare: Compare your transcript with an accounting bachelor's curriculum to identify coursework gaps, since entry typically requires a bachelor's degree in accounting or a related field. Accountants who file reports with the Securities and Exchange Commission must hold state CPA licensure.

What the civilian work involves
  • Collect and analyze data to detect deficient controls, duplicated effort, extravagance, fraud, or non-compliance with laws, regulations, and management policies.
  • Inspect account books and accounting systems for efficiency, effectiveness, and use of accepted accounting procedures to record transactions.
Civilian tools and software (examples)
  • Microsoft Excel
  • Intuit QuickBooks
  • SAP software

Notes & Sources

Evidence for this guidance (4 documents)
  1. NAVMC 1200.1L (FY26, in force): MOS 3402

    [1] MOS 3402 section "a. Summary"; cached text line 13208; NAVMC 1200.1L signed 2025-03-07, in force until 2026-10-01

    Supports: Public fund custody and disbursement controls, Military pay and travel entitlement computation, Expenditure and collection reporting to accounting systems, Fiscal regulation interpretation for deployed operations, Treasurers and Controllers (O*NET 11-3031.01), Accountants and Auditors (O*NET 13-2011.00)

  2. O*NET: Treasurers and Controllers

    [2] O*NET 30.3 occupational data

    Supports: Treasurers and Controllers (O*NET 11-3031.01)

  3. O*NET: Accountants and Auditors

    [3] O*NET 30.3 occupational data

    Supports: Accountants and Auditors (O*NET 13-2011.00)

  4. Bureau of Labor Statistics: Accountants and Auditors

    [4] How to Become an Accountant or Auditor; Education; Licenses, Certifications, and Registrations; page dated August 27, 2026, retrieved September 24, 2026

    Supports: Accountants and Auditors (O*NET 13-2011.00)

Defense contractor jobs for 3402

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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