For a person of means relocating to the United States, the tax consequences of crossing the residency line are easy to underestimate and very hard to reverse. The U.S. taxes its residents on worldwide income, applies layers of anti-deferral rules to foreign companies and investment funds, and exposes worldwide assets to estate and gift tax. The good news is that a great deal can be done in advance, lawfully and effectively, to reduce that exposure. The catch is that the window is narrow and closes the moment residency begins.

What Changes

What U.S. Residency Triggers

Becoming a U.S. tax resident is a bright line. On one side, a foreign national is generally taxed only on U.S.-source income and only on U.S.-situated assets. On the other side, the rules expand dramatically:

  • Worldwide income tax. All income, wherever earned, becomes subject to U.S. tax.
  • Anti-deferral regimes. Foreign corporations and funds you own can trigger complex, punitive rules (the CFC and PFIC regimes) that tax or penalize previously deferred income.
  • Worldwide estate and gift exposure. Once U.S.-domiciled, your global estate, not just U.S. assets, comes within reach of U.S. transfer taxes.
  • Full reporting. FBAR, FATCA, and foreign-entity and foreign-trust reporting obligations all attach.
Timing

The Planning Window

Residency generally begins on receipt of a green card or on meeting the substantial presence test based on days in the country. Pinpointing that residency starting date is a technical exercise, and it is the deadline for nearly everything worth doing. Planning completed even a single day before residency can be sound and routine; the identical steps taken afterward are usually unavailable or far less effective. The earlier we begin, ideally months before the move, the more can be accomplished.

The core idea
Pre-immigration planning is about resetting your starting position before the U.S. tax system applies, so that you enter residency on the most favorable footing the law allows, not about avoiding tax once you are here.
The Toolkit

Core Pre-Immigration Strategies

The right combination depends entirely on your assets and circumstances, but the recurring moves include:

  • Stepping up basis. Recognizing gains on appreciated assets before residency can reset their basis, so future U.S. tax applies only to post-arrival appreciation rather than a lifetime of gain.
  • Timing income and gains. Accelerating certain income into the pre-residency period, and deferring deductions, where it produces a better overall result.
  • Restructuring foreign entities. Reorganizing foreign companies and investments before arrival to avoid the harshest CFC and PFIC consequences.
  • Pre-immigration trusts. Establishing certain foreign trusts before residency to keep assets outside the U.S. estate and, in some cases, provide a period of income-tax efficiency.
  • Gift and estate positioning. Making transfers before U.S. domicile attaches, while different and more favorable rules still apply.
Estate & Gift

The Often-Missed Estate Dimension

Income tax dominates most pre-immigration conversations, but the estate and gift dimension is frequently the larger long-term issue. A non-domiciliary faces U.S. estate tax only on U.S.-situated assets, and on a far narrower basis than a domiciliary, whose entire worldwide estate is exposed. Because domicile is about intent and facts, not a simple test, the period before relocation is the moment to put estate-planning structures in place. Handled early, this can protect far more value than income-tax timing alone.

Who This Is For

Who Needs Pre-Immigration Planning

  • Entrepreneurs and founders relocating to the U.S., particularly those holding foreign companies.
  • Investors and executives moving on work or investor visas leading to a green card.
  • Families relocating with substantial foreign assets, real estate, or trusts.
  • Anyone with appreciated assets, foreign entities, or foreign funds who will become a U.S. resident.
Our Role

Working With Calvary International Law

We are an international practice based in Washington, DC, focused on cross-border planning. We assess your pre-residency position, design the structure and sequence of steps, and coordinate closely with your immigration counsel and tax advisors in our network, so the legal, tax, and timing pieces move together before your residency date. The whole value of this work is in acting early; the sooner we start, the more we can do.

Reviewed by Yonathan Amselem, Esq.Founding Attorney, Calvary International Law · Member, District of Columbia Bar, No. 1023271. Yonathan advises individuals and families on cross-border and pre-immigration planning.