Why US tax hikes may not fix the debt — and what founders should do为什么提高美国税收可能无法解决债务问题——创始人应如何应对

A new Tax Foundation simulation finds that even very large US tax increases that close the primary deficit in the near term are unlikely to put federal debt on a sustainable long‑term path. Interest costs and economic feedbacks erode much of the benefit over time, leaving policymakers with a dilemma: raise rates again and again, or accept a persistently higher debt/GDP profile.

Why the study matters for cross-border founders

For Singapore, Hong Kong, and China-outbound founders considering or operating in the US, the immediate policy takeaway is not just headline tax rates. The study highlights that future US tax policy is likely to be volatile: large increases are possible in some revenue scenarios, and the political pressure to raise revenue will persist if interest costs stay high. That uncertainty affects entity design, financing, repatriation planning, and deal structuring.

Practically, founders should assume a wider distribution of future outcomes: higher corporate tax burdens, more aggressive anti‑base erosion rules, or new surtaxes. This matters for choices such as where to place a regional holding company, whether to finance US affiliates with debt or equity, and how to design cross‑border IP licensing and service agreements to withstand scrutiny.

Concrete structuring implications

1) Revisit holding company jurisdiction and treaty routing. If US tax rates and anti‑avoidance measures rise, the benefits of routing dividends or royalties through a Hong Kong or Singapore holding company may change in magnitude and timing. Review treaty positions and update the mechanics of intercompany flows — consult your advisers on treaty benefits and limitation‑on‑benefits (LOB) clauses.

2) Reassess financing and transfer pricing. Higher US corporate taxes make interest deductibility and thin‑capitalization defenses more salient. Test financing structures under scenarios with higher tax rates and stricter BEAT/GILTI interpretations. Consider whether a Singapore or Hong Kong treasury/finance company is better positioned to manage group funding when factoring in IRAS incentives or IRD guidance on substance.

3) Protect repatriation flexibility. If the US moves toward higher integrated taxes or new repatriation surcharges, holding cash offshore in a Singapore or Hong Kong entity may be advisable — but make sure you document substance to support any treaty claims or preferential local incentives. For China investors, monitor MOFCOM/SAFE ODI procedures and any outbound investment filings that may apply to non‑trade transfers of funds.

Practical jurisdictional mechanics to check now

Singapore: confirm ACRA filings, keep accounting and local directors in order, and evaluate IRAS incentives such as development and enterprise allowances you may use to offset rising tax exposure. Use the Singapore company incorporation step by step guide to verify registration and compliance milestones.

Hong Kong: maintain substance to support preferential treatment under Inland Revenue Department guidance. Keep contemporaneous transfer pricing studies and consider the cross-border corporate structuring for SG and HK founders to centralize treasury or IP functions appropriately.

China outbound: perform ODI reviews early. SAFE recordations and any sectoral approvals can delay cross‑border capital movements. For equity investments into US operating companies, ensure your MOFCOM/SAFE ODI filing steps are planned alongside corporate formation and banking timing.

US mechanics: if you plan a Delaware C‑Corp, budget for Delaware franchise tax and annual report requirements, obtain an EIN (use Form SS‑4 if no SSN; allow lead time for IRS processing), and prepare ITIN filings for any nonresident principals needing US tax reporting. See our Delaware C-Corp setup for foreign founders guide for a checklist.

What to do next — a short checklist

- Run scenario models that stress corporate tax, GILTI, BEAT, and withholding rate increases for 3–10 year horizons. Use financial modeling and cap table simulations to see when a change in structure becomes uneconomic.

- Reassess intercompany agreements and transfer pricing documentation; lock in arm’s‑length policies now and maintain operational substance to defend treaty benefits.

- Decide financing posture: if the US tax landscape becomes more volatile, equity financing into US subsidiaries reduces the risk of losing interest deductibility; yet it may increase US taxable presence. Model both options.

- Coordinate entity setup with compliance levers: ACRA/IRAS filings for Singapore entities, IRD documentation for Hong Kong, MOFCOM/SAFE ODI for China outbound, plus Delaware franchise tax and EIN planning for US entities. Consider early engagement with advisers to avoid multi‑jurisdictional timing gaps.

YZ CPA Advisory View

Rising interest costs make tax outcomes less predictable; founders should plan for volatility rather than a single “tax increase” endpoint. For Singapore, Hong Kong, and China-outbound founders moving into the US, prioritize scenario modeling, substance documentation, and coordinated filings across SAFE/ACRA/IRD/IRS so restructuring remains an option as policy evolves.

To discuss how these developments affect your cross-border operations, schedule a consultation with YZ CPA Advisory or explore our international tax planning and US-China treaty optimization service.

中文摘要

税务研究表明单次大幅加税难以长期稳定债务轨迹，这意味着美国税收政策在未来可能更不确定。面向美国扩张的中新港创始人与财务负责人应以情景建模、实质性安排和跨境合规为先，提前调整融资、控股与转移定价策略。