The number of single-family offices in Hong Kong surpassed 3,380 by the end of 2025, reflecting a 25% increase over a two-year period.[1] Many of these offices were established on the back of successful exits from operating businesses, private equity positions, or real estate portfolios. When a founder or principal realizes a significant liquidity event in the United States, the question shifts quickly from "how do we close this deal" to "where does this capital go next."
That transition from exit to reinvestment is deceptively complex. The legal, regulatory, and structural considerations involved in redeploying capital as a foreign investor in the United States are materially different from those that governed the original investment. This article examines the reinvestment landscape facing family offices after a U.S. liquidity event and identifies the key legal considerations that shape where and how that capital gets deployed.
Hong Kong alone now injects over $10 billion annually into its local economy through family office activity, according to InvestHK.[2] But capital originating from the Asia-Pacific region does not stay regional by default. As family offices mature, their allocation strategies become increasingly global. The J.P. Morgan 2026 Family Office Report documents a broad shift toward diversification across asset classes and geographies, with North American markets remaining a primary target for risk-adjusted returns.[3]
For a family office that has just realized proceeds from the sale of a U.S. operating company, a portfolio exit, or a real estate disposition, the reinvestment timeline is often compressed. Tax deferral strategies such as Section 1031 exchanges, Qualified Opportunity Zone investments under 26 U.S.C. Sections 1400Z-1 and 1400Z-2, and installment sale structures under Section 453 all impose strict deadlines.[4] Missing those windows can result in immediate recognition of capital gains, making the legal structuring of the reinvestment as time-sensitive as the original transaction.
Family offices deploying post-exit capital in the United States generally consider some combination of the following strategies.
Commercial and residential real estate remains one of the most common destinations for post-exit capital, particularly for investors from jurisdictions with less stable property markets. The Foreign Investment in Real Property Tax Act (FIRPTA) under 26 U.S.C. Section 897 imposes withholding obligations on dispositions by foreign persons, and the structure of the reinvestment vehicle directly affects whether future dispositions will trigger FIRPTA withholding at 15% of the gross sales price or at reduced rates through treaty benefits or corporate "blocker" structures.[5]
Family offices increasingly participate as limited partners in U.S.-based private equity and venture capital funds. The key structural question for foreign investors is whether fund income will be treated as "effectively connected income" (ECI) under 26 U.S.C. Section 864(c), which would subject the foreign investor to U.S. taxation at ordinary rates. Properly structured fund participation through blocker corporations can mitigate this exposure, but the structure must be in place before the commitment is made.[6]
Some family offices prefer to acquire or launch operating businesses rather than invest passively. This channel raises the most significant regulatory questions, particularly under the Committee on Foreign Investment in the United States (CFIUS) framework. Under the Foreign Investment Risk Review Modernization Act (FIRRMA), codified at 50 U.S.C. Section 4565, CFIUS has jurisdiction to review any transaction that could result in foreign control of a U.S. business or that involves a covered investment in a TID U.S. business (one involved in critical technologies, critical infrastructure, or sensitive personal data).[7]
A growing number of family offices are allocating capital to private credit, participating as lenders in mezzanine financing, bridge loans, and specialty lending. While these structures avoid many of the equity-related regulatory triggers, they carry their own considerations around licensing, usury laws, and lender liability depending on the state of origination.[8]
Any discussion of foreign capital deployment in the United States must account for the expanding regulatory footprint of CFIUS. Since the implementation of FIRRMA in February 2020, CFIUS review is no longer limited to controlling acquisitions. The regulations at 31 C.F.R. Part 800 now reach non-controlling investments in TID U.S. businesses where the foreign person gains access to material nonpublic technical information, board representation or observer rights, or involvement in substantive decision-making.[9]
For investors from Hong Kong, Macau, and mainland China, the scrutiny is even more targeted. The February 2025 "America First Investment Policy" presidential memorandum directed CFIUS to prioritize review of transactions involving investors from countries of concern, with explicit references to investments in technology, critical minerals, agriculture, and real estate near military installations.[10] Investors from these jurisdictions cannot rely on the new Known Investor Program (KIP), which is designed to fast-track repeat investors from allied nations. The KIP explicitly excludes applicants with ties to "adversary countries," a category that includes China, Hong Kong, and Macau under Treasury's current framework.[11]
The regulatory picture is further complicated by the Outbound Investment Security Program, which took effect on January 2, 2025, under 31 C.F.R. Part 850. While this program primarily restricts U.S. persons from investing in certain Chinese entities working in semiconductors, quantum computing, and artificial intelligence, it creates secondary effects for family offices with cross-border operations. A family office based in Hong Kong that also maintains U.S. persons among its principals or investment team must ensure that its internal fund flows do not inadvertently trigger outbound investment restrictions even when the primary transaction is an inbound U.S. deployment.[12]
The choice of entity for reinvestment is rarely a simple question. A foreign family office that held its original U.S. investment through a Delaware LLC may find that the same structure is suboptimal for the next deployment. The considerations vary by asset class:
For real estate, the use of a domestic C corporation or a foreign corporation making a domestic election can serve as a FIRPTA blocker, potentially converting what would be a 15% withholding on gross proceeds into a corporate-level tax on net gains, which may be more favorable depending on the investor's overall position.[13]
For fund investments, a Cayman Islands or British Virgin Islands blocker corporation interposed between the foreign investor and the U.S. fund has been the traditional structure for converting ECI into dividend income. However, recent IRS scrutiny of these structures and evolving treaty interpretations require ongoing analysis.[14]
For operating businesses, the entity structure must account not only for tax efficiency but also for CFIUS reporting obligations. Certain structures that involve foreign government-connected entities trigger mandatory CFIUS filing requirements under 31 C.F.R. Section 800.401, regardless of the size or nature of the transaction.[15]
The transition from exit to reinvestment is where legal counsel provides the most concentrated value. The original deal team may have focused on representations and warranties, purchase price adjustments, and closing mechanics. The reinvestment phase demands a different skill set: tax structuring across multiple jurisdictions, regulatory analysis under CFIUS and related regimes, entity formation in jurisdictions that balance asset protection with operational efficiency, and compliance with federal and state securities laws when the reinvestment involves pooled capital.
Family offices that approach reinvestment without counsel positioned for this transition often discover the regulatory and structural issues only after commitments have been made. At that stage, the cost of restructuring can be significant, both in terms of direct expense and in terms of lost deferral opportunities.
The post-exit moment is one of the most consequential in a family office's lifecycle. Capital that has been successfully harvested from one investment can be substantially diminished by avoidable tax exposure, regulatory complications, or structural inefficiency in the reinvestment. The legal and regulatory environment for foreign investors in the United States is more complex today than at any point in the past decade, and the pace of change shows no signs of slowing. Family offices that build their reinvestment strategy with legal and regulatory considerations at the center, rather than as an afterthought, will be better positioned to preserve and grow the capital they have worked to generate.
[1] InvestHK, "Hong Kong's Single Family Offices Total Surpasses 3,380, Injecting Over $10 Billion Annually into Local Economy" (2026), https://www.investhk.gov.hk/en/news/hong-kongs-single-family-offices-total-surpasses-3-380-injecting-over-10-billion-annually-into-local-economy.
[2] Id.
[3] J.P. Morgan Private Bank, 2026 Family Office Report, https://privatebank.jpmorgan.com/apac/en/insights/reports/2026-family-office-report.
[4] 26 U.S.C. Section 1031 (like-kind exchanges); 26 U.S.C. Sections 1400Z-1, 1400Z-2 (Qualified Opportunity Zones); 26 U.S.C. Section 453 (installment sales).
[5] 26 U.S.C. Section 897 (FIRPTA); 26 U.S.C. Section 1445 (withholding on dispositions of U.S. real property interests by foreign persons).
[6] 26 U.S.C. Section 864(c) (effectively connected income); see also IRS Revenue Ruling 91-32 (treatment of foreign partners in partnerships engaged in U.S. trade or business).
[7] 50 U.S.C. Section 4565 (FIRRMA); 31 C.F.R. Part 800 (CFIUS regulations); 31 C.F.R. Section 800.248 (definition of TID U.S. business).
[8] See generally Proskauer Rose LLP, "CFIUS Developments Counsel Caution for In-Bound US Investment" (2025), https://www.proskauer.com/blog/cfius-developments-counsel-caution-for-in-bound-us-investment.
[9] 31 C.F.R. Sections 800.211, 800.213 (covered control transactions and covered investments); 31 C.F.R. Section 800.248 (TID U.S. businesses).
[10] Presidential Memorandum, "America First Investment Policy" (Feb. 21, 2025); see Economic Policy Institute, "Presidential Memorandum on America First Investment Policy" (analysis), https://www.epi.org/policywatch/presidential-memorandum-on-america-first-investment-policy/.
[11] Pillsbury Winthrop Shaw Pittman LLP, "Treasury Request for Comment on CFIUS Known Investor Program," https://www.pillsburylaw.com/en/news-and-insights/treasury-request-cfius-known-investor-program.html; see also JD Supra, "Observations on the CFIUS Known Investor Program" (2025), https://www.jdsupra.com/legalnews/observations-on-the-cfius-known-7179810/.
[12] 31 C.F.R. Part 850 (Outbound Investment Security Program); Perkins Coie LLP, "Treasury's Final Rule on Outbound Investments Takes Effect January 2," https://perkinscoie.com/insights/update/treasurys-final-rule-outbound-investments-takes-effect-january-2; Rimon Law, "New U.S. Government Regulation on Restricted Outbound Investments," https://www.rimonlaw.com/lawfuel-new-u-s-government-regulation-on-restricted-outbound-investments/.
[13] 26 U.S.C. Section 897(a) (FIRPTA taxation); see also IRS Publication 515 (Withholding of Tax on Nonresident Aliens and Foreign Entities).
[14] See, e.g., 26 U.S.C. Section 881 (taxation of foreign corporations); U.S. Model Income Tax Convention, Art. 10 (dividends).
[15] 31 C.F.R. Section 800.401 (mandatory CFIUS declarations for certain transactions involving foreign government interests in TID U.S. businesses).