Accounting for Maritime and Port-Related Businesses in Louisiana

Louisiana is a maritime state. The Mississippi River, the Gulf of Mexico, and 2,800 miles of navigable waterways make the state central to the nation’s maritime transportation system. The Port of South Louisiana is one of the busiest port complexes in the world by total cargo tonnage. The Port of New Orleans handles grain, steel, rubber, coffee, and containers. And the state is home to 70,780 Jones Act-supported maritime jobs — the highest in the nation — generating more than $4.2 billion in worker income.

For the businesses that operate in this sector — vessel operators, stevedoring companies, freight forwarders, port terminals, and maritime service providers — the accounting is not generic. Vessel revenue recognition, crew payroll under shipping articles, multi-state apportionment for waterway operations, and GASB reporting for port authorities all require specialized knowledge.

This guide covers the accounting and tax considerations that Louisiana maritime and port-related businesses face.

The scope of Louisiana’s maritime economy

Louisiana’s maritime industry is not a single sector. It includes:

• Vessel operations: Tugboats, barges, supply vessels, crew boats, and line-haul vessels operating on the Mississippi River, the Gulf Intracoastal Waterway, and offshore.
• Port terminals: Cargo handling, warehousing, and terminal operations at the Port of South Louisiana, Port of New Orleans, Port of Baton Rouge, and smaller ports along the river system.
• Stevedoring and terminal services: Loading and unloading vessels, crane operations, and cargo management.
• Maritime services: Ship repair, vessel provisioning, bunkering, and marine surveying.
• Offshore support: Supply vessels, crew transfer, and logistics for oil and gas platforms.
• Shipbuilding and repair: Yards along the Gulf Coast that build and service commercial and military vessels.

The Port of South Louisiana’s audited financial statements show the scale of the operations involved. The Port holds over $52 million in direct financing lease receivables related to its facility operators and revenue bonds. Its operating revenues include dockage, harbor fees, wharfage, foreign trade zone income, and rentals. For the fiscal year ended April 30, 2009, the Port reported total operating revenues of approximately $9.1 million.

Accounting for port authorities and maritime entities

Louisiana port authorities are political subdivisions of the state. They prepare their financial statements in accordance with the Governmental Accounting Standards Board (GASB), not FASB. The Port of South Louisiana, for example, reports as a stand-alone entity using the accrual basis of accounting and the economic resources measurement focus.

This matters for several reasons:

Revenue recognition. Ports earn revenue from dockage, wharfage, harbor fees, rentals, and foreign trade zone income. Each revenue stream has its own recognition rules. Dockage, for example, is earned when a vessel docks and is generally recognized at that point. Rentals are recognized over the lease term.

Direct financing leases. Ports often enter into direct financing lease agreements with facility operators. The Port of South Louisiana’s restricted assets include $52 million in leases receivable. The accounting for these leases requires tracking lease payments, interest income, and the amortization of discounts over the lease term.

Revenue bonds. Ports issue revenue bonds to finance infrastructure. These bonds are payable solely from revenues derived from the financed facilities — not from the port’s general credit. The accounting for bond proceeds, interest expense, and debt service requires careful tracking.

GASB compliance. Ports must implement GASB statements as they are issued. GASB 87 (Leases) and GASB 45 (Other Postemployment Benefits) both have significant impacts on port financial statements. The Port of South Louisiana recorded a $1.26 million OPEB liability when it implemented GASB 45.

Crew payroll under shipping articles

Maritime payroll is not the same as land-based payroll. Seamen working under shipping articles — the employment contract required by Title 46 of the U.S. Code — have special payroll rules.

Under Louisiana Administrative Code Title 40, Part IV, Section 349, wages earned under shipping articles are reported differently from other wages:

• Pay period: The pay period is the voyage or engagement period, not a standard weekly or bi-weekly period.
• Reporting: The total wages for the pay period are included in the wage report for the calendar quarter in which the period terminates.
• Proration: If the pay period spans more than one calendar quarter, wages are prorated among the quarters in which they were earned for purposes of unemployment benefit eligibility.

This means a maritime employer cannot simply run payroll on a standard schedule. The payroll system must track voyage periods, calculate wages earned in each quarter, and report them correctly to the Louisiana Workforce Commission.

Jones Act compliance. The Jones Act requires that vessels carrying cargo between U.S. points be American-owned, American-crewed, and American-built. For payroll, this means crew members must be U.S. citizens or lawful permanent residents. The employer must verify work eligibility and maintain records supporting compliance.

Vessel revenue recognition and multi-state apportionment

Maritime businesses that operate across state lines — and most Louisiana maritime businesses do — face complex revenue recognition and apportionment issues.

Revenue recognition. Vessel revenue comes from multiple sources: freight charges, demurrage, dispatch, and charter hire. Demurrage is a charge for detaining a vessel beyond the agreed laytime. Dispatch is a reward for loading or discharging faster than the agreed laytime. Each has its own recognition rules. A maritime CPA can help you set up a revenue recognition policy that reflects the economics of your operations.

Multi-state apportionment. If your vessels operate in multiple states, you may have income tax filing obligations in each state where you have nexus. Apportionment rules vary by state. Louisiana uses a single sales factor apportionment for most businesses, but special rules may apply to transportation and maritime businesses.

Louisiana-specific. Louisiana’s corporate income tax rate is a flat 5.5% for tax periods beginning on or after January 1, 2025. The franchise tax was repealed for periods beginning on or after January 1, 2026.

Tax incentives for Louisiana maritime businesses

Louisiana offers several incentives that maritime businesses can use:

Quality Jobs Program. Provides a cash rebate of up to 6% of annual gross payroll for new direct jobs for up to 10 years. Maritime businesses that create high-paying jobs often qualify.

Industrial Tax Exemption Program (ITEP). Provides property tax exemptions for manufacturers, including shipyards, terminal operators, and other maritime industrial facilities. Qualifying for and maintaining ITEP requires careful documentation.

Enterprise Zone Program. Offers tax credits for businesses that locate or expand in designated areas.

Port revenue bonds. Port authorities can issue revenue bonds to finance maritime infrastructure. The bonds are payable from facility revenues, not from the port’s general credit. This allows private operators to access tax-exempt financing for docks, warehouses, and terminals.

Recordkeeping for maritime businesses

The records a maritime business must keep go beyond the standard requirements. In addition to income and expense records, you need:

• Vessel logs: Records of each voyage, including departure and arrival dates, ports of call, cargo carried, and fuel consumed.
• Crew records: Employment contracts, shipping articles, payroll records, and work eligibility documentation.
• Maintenance records: Drydock schedules, repair invoices, and equipment depreciation schedules.
• Revenue records: Freight invoices, demurrage and dispatch calculations, charter agreements, and settlement statements.
• Compliance records: Jones Act documentation, U.S. Coast Guard inspections, and environmental compliance records.

The IRS requires that these records be kept for at least three years after the return is filed. Employment tax records must be kept for at least four years. Records related to vessel assets must be kept until the period of limitations expires for the year the asset is disposed of.

When to bring in a maritime CPA

Maritime accounting is not a generalist discipline. It involves:

• Vessel revenue recognition (freight, demurrage, dispatch, charter hire)
• Crew payroll under shipping articles
• Jones Act compliance
• Multi-state apportionment for waterway operations
• GASB reporting for port authorities
• Revenue bond accounting
• Direct financing lease accounting
• Vessel depreciation and drydock capitalization

A general CPA may not know these rules. A maritime CPA understands the industry’s operational and regulatory landscape.

You should work with a maritime CPA if:

• You operate vessels in Louisiana waters or the Gulf of Mexico
• You employ crew members under shipping articles
• You have port terminal or stevedoring operations
• You are a port authority or a port-related entity
• You have revenue bonds or direct financing leases
• You are planning a vessel purchase, sale, or charter
• You are structuring a maritime business for growth or succession

The bottom line

Louisiana maritime and port-related businesses face accounting and tax challenges that require specialized expertise. Crew payroll under shipping articles, vessel revenue recognition, multi-state apportionment, and GASB reporting all demand a CPA who understands the industry.

If your Louisiana maritime business is growing, facing a tax issue, or planning a major transaction, work with a CPA who has maritime experience. The value of correct accounting is measured in more than tax savings — it is measured in better decisions, stronger cash flow, and a more valuable business.

Louisiana CPA Hub is an independent referral service. It is not an accounting firm and does not provide tax, accounting, legal or financial advice.