- The IRS barred foreign corporations from claiming Section 883 shipping-income exclusions on domestic cargo voyages.
- Foreign operators must report waiver income on Form 1120-F rather than treating it as exempt international shipping.
- A 90-day extension begins August 17, 2026, after energy cargo volumes increased significantly under the waiver program.
The Internal Revenue Service (IRS) has barred foreign corporations using a Jones Act waiver from claiming the Section 883 shipping-income exclusion on cargo moved between U.S. ports.
The agency instead requires those operators to report the voyage income on Form 1120-F, the U.S. Income Tax Return of a Foreign Corporation. The guidance also rejects related treaty benefits for this domestic transportation.
The ruling applies to foreign-flagged vessels temporarily carrying cargo inside the United States. Their voyages do not qualify as the “international operation of ships” for federal tax purposes.
The waiver continues. The latest extension begins August 17, 2026, after the current period expires on August 16.
The tax instruction appears in the agency’s guidance on income reporting for foreign corporations. It says operators should not claim exempt shipping income on Schedule S or use Form 8833 to disclose a treaty position.
The tax treatment changes while the shipping permission remains in place
The Department of Homeland Security issued the waiver on March 17, 2026, at the request of the Department of War. It initially covered 60 days and expired at 11:59 p.m. Eastern Daylight Time on May 17.
A second period started at 12 a.m. Eastern time on May 18. It runs until 11:59 p.m. Eastern time on August 16.
The White House announced a further 90-day extension on August 12. That period is scheduled to run through November 14, with stricter case-by-case reviews by the Pentagon and MARAD.
The waiver lets foreign-flagged vessels move cargo between American ports, despite the usual domestic-shipping restrictions. The tax guidance does not treat that permission as international shipping activity.
| Waiver period or measure | Dates or scope |
|---|---|
| Initial period | March 17, 2026, through May 17, 2026 |
| Second period | May 18, 2026, through August 16, 2026 |
| Further extension | Begins August 17, 2026, and is scheduled through November 14, 2026 |
| Required return | Form 1120-F |
For tax year 2026, the agency directs affected corporations to include qualifying waiver voyage income on Form 1120-F rather than treat it as exempt shipping income.
Foreign operators could face several layers of U.S. tax
The immediate effect is exposure to federal income tax on domestic voyage earnings that operators might previously have excluded. The final amount depends on the company’s facts and its filing position.
Seward & Kissel analyses identify two possible outcomes. A foreign shipowner could face a 21% corporate income tax plus a 30% branch profits tax on net income, or a 30% tax on gross voyage income.
The law firm’s Bruce Paulsen warned “First World operators” to examine the shifting sanctions and tax rules before relying on domestic U.S. routes. Operators are also reviewing charter agreements to determine whether contracts can shift tax liabilities to charterers.
The filing instruction reaches beyond the return itself. The guidance says operators should not report the income as exempt shipping income on Schedule S or use treaty disclosure on Form 8833.
The waiver moved energy products at a much larger scale
The tax decision arrives as the temporary shipping program handles substantial cargo volumes. Approximately 208 exemptions had been granted over a 4.5-month period ending August 3, 2026.
During the first 50 days, foreign-flagged tankers moved 1.59 million barrels of energy products from the Gulf Coast to the West Coast. That was roughly four times the volume transported by water on that route during all of 2025.
Energy Secretary Chris Wright confirmed the extension at a Texas media briefing on August 4. He said the suspensions had helped distribute energy across the country.
“These temporary suspensions of the Jones Act have been quite helpful for moving energy around our country.”
The program began after the militarization of the Strait of Hormuz by Iran starting February 28, 2026. The disruption sent oil prices higher, prompting the administration to authorize temporary relief under 46 U.S.C. § 501(a).
The Jones Act, formally the Merchant Marine Act of 1920, generally limits domestic maritime commerce to vessels that are U.S.-built, U.S.-owned, and U.S.-crewed.
Maritime groups say the extension has not delivered its promised benefits
Jennifer Carpenter, president of the American Maritime Partnership, criticized the extension on August 11. She said case-by-case reviews were an improvement but challenged the program’s effect on consumers and national needs.
“the waiver has not lowered fuel prices for American consumers and has been used to increase oil traders' margins, not meet military needs.”
The partnership separately called for enforcement of all U.S. laws on foreign vessels. It said, “This is essential to putting American workers and taxpayers first.”
The Seafarers International Union and M.E.B.A. have warned that the waivers divert work from U.S. crews. The tax ruling gives domestic maritime interests an argument against allowing foreign operators to receive a tax advantage on those routes.
The Cato Institute and the partnership have characterized the effect on gasoline prices as modest, estimating a reduction of only a few cents per gallon. Wright has argued that the waivers help lower costs.
Case-by-case reviews will govern the next extension
The administration initially used blanket waivers to address energy shortages. In August, the policy shifted toward individual reviews after pressure from domestic maritime unions and shipbuilders.
Those groups argued that foreign competition was weakening the U.S. maritime industrial base. The next period will therefore combine continued access with tighter review by the Pentagon and MARAD.
Foreign vessel operators must account for the tax rule while deciding whether a permitted domestic voyage remains profitable. The agency’s filing direction applies to income from the waiver voyages, even as the shipping authorization continues through its scheduled extension.
The current period ends at 11:59 p.m. Eastern time on August 16, 2026. The next one is set to begin the following day.
This article is for informational purposes only and does not constitute tax advice. Consult a qualified tax professional or CPA about your specific situation.
