Navigating Summer Relocations: A Tax Planning Guide for High-Income Families

Relocating for employment goes beyond logistical considerations; it’s an opportunity for financial planning. While timing isn’t always up to the employee, most people prefer the summer, especially those with families. School is out, the calendar is lighter, and a July or August start date at a new employer feels like a natural reset.

For high-net-worth families, however, a mid-year move introduces an added layer of financial complexity compared to a December 31st transition. The tax year is underway; equity compensation is mid-cycle, and the clock for establishing domicile in a new state starts the moment you arrive, not when you file your return. Proactive planning is essential to minimize unintended state tax exposure and the risk of double taxation.¹

Whether navigating a transfer this summer or planning for next year, the sequencing and timing of decisions can impact your financial outcome.

Before You Accept: Model the Full Picture First

The single most valuable planning window is the one most families overlook: the period between receiving an offer and accepting it. Before a relocation is finalized, families should model the complete after-tax impact of the move across both states.

Equity compensation is where summer moves create the most exposure. Restricted stock units (RSUs) that vested earlier in the year were earned while you were a resident of your previous state. RSUs vesting after the move will be subject to your new state’s rules, but the allocation between jurisdictions depends on each state’s own guidelines, which can vary considerably. California, for example, sources RSU income based on the ratio of days worked in-state during the entire vesting period. A mid-year move does not cleanly sever that connection.²

Incentive stock options (ISOs) require similar advance planning. A summer move to a no-income-tax state may look attractive on the surface, but alternative minimum tax exposure at the federal level does not disappear with a change of address.³ Families with significant option positions should stress-test their equity calendar against both jurisdictions before the move date is set.

Owners of closely held businesses should also assess whether the relocation triggers nexus in a new state. This is the legal threshold that requires a business to register, file, and pay taxes. Flow-through income from a partnership or S corporation may follow the principal to the new state even when underlying operations have not moved.⁴ This should be addressed in the negotiation window, not after the move. 

Once You Arrive: Establish Domicile Deliberately

For families departing high-tax states such as California, New York, New Jersey, and Illinois, a change of address is not a change of domicile. These states are aggressive in asserting continuing jurisdiction over former residents, and summer moves draw particular scrutiny because significant income was already earned in the departing state.⁵

Domicile is determined by facts and circumstances, not paperwork alone. Registering to vote, updating estate plans, transferring primary banking relationships, and establishing medical and advisory connections in the new state all contribute to the evidentiary record. Families maintaining multiple properties must document physical presence with particular care. The widely known 183-day rule is a starting point, not a safe harbor.⁶

Summer is also the right moment to review existing trust documentation. Irrevocable trusts may be subject to income tax in the new state based on the residency of the trustee or beneficiaries. Repositioning trust administration before the move is substantially simpler after.⁷

At the Move: Retitle, Reinsure, and Revisit Your Estate Plan

A mid-summer closing on a new primary residence triggers a series of administrative steps that carry real financial consequences if deferred into the fall. Asset titling should be reviewed against the new state’s property laws, particularly for married couples navigating the distinction between community property and common law states.⁸ Life insurance beneficiary designations, umbrella liability coverage, and property insurance should all be updated to reflect the new domicile.

Estate and inheritance tax exposure may shift meaningfully depending on the states involved. A family moving from a state with no estate tax into one with its own exemption threshold, or vice versa, should revisit the architecture of their wealth transfer plan before year-end.⁹

Planning for Next Summer: Start Now

Lead time is an advantage. Use it to address key priorities:

• Model equity events early. Map RSU vests and ISO exercises against both states’ rules before committing to a move date.
• Begin building the domicile record. Document intent and physical presence from day one in the new state.
• Review retirement and deferred compensation. Confirm how each state treats individual retirement account (IRA) distributions and Section 409A arrangements before any elections are made.
• Evaluate charitable vehicles. Donor-advised funds (DAFs) and charitable remainder trusts (CRTs) should be reviewed under the new state’s rules in advance.
• Review business nexus exposure. Assess whether the move creates filing obligations in the new state for any closely held entities.
• Update insurance and titling. Retitle assets and update all policies to reflect the new domicile promptly after closing.

While relocation can be a disruption, it is ultimately an opportunity to review your finances. Families who engage their wealth manager, certified public accountant (CPA), and estate planning attorney, well before the move is finalized are better positioned to control outcomes than to react to them.  Begin the conversation with our team today so you arrive at your new home with your financial architecture intact.


References

¹ Internal Revenue Service. Publication 519: U.S. Tax Guide for Aliens — Residency Rules. IRS.gov. For state-level residency timing rules, see individual state department of revenue guidance.

² California Franchise Tax Board. Equity-Based Compensation: Sourcing Rules for Restricted Stock Units. FTB Publication 1005. ftb.ca.gov.

³ Internal Revenue Code § 56. Alternative Minimum Tax — Adjustments in Computing Alternative Minimum Taxable Income. Cornell Law School Legal Information Institute. law.cornell.edu.

⁴ Multistate Tax Commission. Factor Presence Nexus Standard for Business Activity Taxes. mtc.gov. See also P.L. 86-272 for interstate commerce protections.

⁵ New York State Department of Taxation and Finance. Domicile and Residency: What You Need to Know. tax.ny.gov; California Franchise Tax Board. Guidelines for Determining Resident Status. FTB Publication 1031.

⁶ Id. The 183-day rule establishes a threshold for statutory residency but does not override a domicile determination. Taxpayers may be subject to tax in a prior state even when present fewer than 183 days if domicile has not been formally changed.

⁷ McNeil v. Commissioner, 2009 TCM 109. Trust residency for state income tax purposes may be determined by the grantor’s domicile, trustee residency, or beneficiary residency depending on state law.

⁸ American Bar Association. Community Property vs. Common Law States: Implications for Asset Titling and Estate Planning. Section of Real Property, Trust and Estate Law. americanbar.org.

⁹ Tax Foundation. State Estate and Inheritance Taxes. taxfoundation.org. Twelve states and the District of Columbia levy estate taxes; six states levy inheritance taxes.

¹⁰ Internal Revenue Service. Publication 505: Tax Withholding and Estimated Tax. IRS.gov. Part-year residents must recalculate estimated tax obligations to account for income earned in multiple jurisdictions.

¹¹ Internal Revenue Code § 408. Individual Retirement Accounts. State treatment of individual retirement account distributions varies; several states exempt all or a portion of retirement income from taxation.

¹² Internal Revenue Code § 409A. Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans. State sourcing of deferred compensation at distribution may differ materially from federal treatment.