A bipartisan coalition in the U.S. House announced Thursday it will introduce legislation stripping foreign sovereign wealth funds of tax-advantaged status on domestic investments, a regime shift affecting an estimated $1.4 trillion in deployed capital across equities, private credit, and infrastructure. The move targets Section 892 exemptions that have allowed entities like Norway's Government Pension Fund Global, Abu Dhabi Investment Authority, and Singapore's GIC to avoid withholding taxes on dividend income and certain capital gains since 1986. The announcement came without warning from the House Ways and Means Committee, naming Saudi Arabia's Public Investment Fund and Qatar Investment Authority as specific concerns.

The proposal reverses nearly four decades of policy predicated on attracting long-term foreign capital to U.S. markets. Under current law, sovereign wealth funds enjoy treatment comparable to direct government investment, exempting them from the 30% withholding tax applied to most foreign portfolio investors. The new framework would reclassify SWFs as commercial entities, subjecting them to standard non-resident taxation and erasing a structural advantage over private foreign allocators. Norway's fund alone holds $290 billion in U.S. equities as of December 2024, making it the largest single foreign institutional holder after Japan's Government Pension Investment Fund. Co-sponsors cite national security concerns and reciprocity failures, noting that U.S. pension funds face restrictions in Gulf Cooperation Council markets.

The timing coincides with heightened scrutiny of Gulf capital in American technology and defense sectors. Saudi Arabia's PIF increased its U.S. public equity allocation by $18 billion in 2024, concentrating positions in semiconductor manufacturing and critical materials companies—the same verticals now drawing bipartisan legislative attention around supply chain sovereignty. The proposed tax treatment would compress after-tax returns on U.S. equities by 200 to 300 basis points for affected funds, a margin that renders many passive index positions uneconomical relative to European or Asian alternatives. Legislative language is expected to include an 18-month transition window, forcing portfolio restructuring across approximately $840 billion in SWF-held U.S. public equity.

The second-order effects reach into private markets. Sovereign wealth funds have anchored $127 billion in U.S. private equity and venture commitments since 2020, according to Preqin data, with tax-exempt status enabling acceptance of lower net IRRs in exchange for governance rights and strategic exposure. Removal of that status compresses net returns on new vintage commitments by 400 to 600 basis points when accounting for withholding on portfolio company dividends and exit distributions. Abu Dhabi's Mubadala, which committed $9.2 billion to U.S. private funds in 2024, would face a choice between demanding higher gross hurdles—straining GP relationships—or reallocating to jurisdictions with bilateral tax treaties offering relief.

Allocators should monitor three near-term developments. First, whether the Senate Finance Committee adopts parallel language, expected in markup sessions by mid-May. Second, bilateral negotiation efforts by Norway, Singapore, and the UAE, which may seek carve-outs or treaty amendments to preserve partial exemptions. Third, visible reallocation flows—if $200 billion to $300 billion in SWF capital begins rotating out of U.S. large-cap equities into European or emerging markets within the transition window, volatility will concentrate in the technology and industrials sectors where SWF ownership exceeds 4% of float. The legislation includes no grandfathering provision for existing holdings, meaning unrealized gains become immediately taxable upon enactment.

The House vote is scheduled for the week of May 19th. Treasury estimates the change would generate $4.8 billion in annual revenue, a rounding error in federal terms but a structural repricing of foreign sovereign capital's role in U.S. asset formation.