The State Atlas · Crossing Brief

What changes when a household crosses state lines.

An operating brief for one move — not an explainer. It reads the reasoning graph from origin to destination and returns what the household must coordinate: the priorities that change, the standing decisions the move makes stale, and the actions to take before, during, and after the crossing.

OriginCalifornia

→

DestinationWashington

Prepared as an illustrative operating brief · 2026 edition

Executive summary

Relocating from California to Washington materially raises the household's state estate-tax exposure, shifting coordination toward estate structure.

The operating environment that changed

Only the dimensions the move actually changes — origin on the left, destination on the right.

What changed	In California		In Washington
Capital-gains rate	13.3%Loss treatment conforms to federal: capital losses net against gains and carry forward. Top effective long-term rate 13.3%. Quirk: 12.3% + a 1% surtax over $1M.	→	9.9%Taxes long-term gains only — a 7% + 2.9% excise on long-term gains only, gross of short-term losses. Top effective long-term rate 9.9%.
Estate & inheritance	No state estate or inheritance tax — only the federal estate tax applies.	→	estateState estate tax (paid by the estate): top rate ~35%, exemption ~$3M. ESSB 5813 (deaths on/after Jul 1 2025): $3M exclusion, graduated to 35% — the highest state rate; $3M indexed from 2026.
Marriage treatment	2xJoint brackets are double the single brackets — generally marriage-neutral.	→	1xOne bracket schedule applies to both single and joint filers — a structural marriage penalty for two earners.
Municipal bonds	in-stateOnly in-state municipal-bond interest escapes state tax; bonds from other states are taxed. The classic in-state muni preference that rewards a home-state ladder.	→	exemptMunicipal-bond interest is exempt from state tax whether the issuer is in-state or out-of-state — the broadest muni preference (states with no tax on investment income, plus a few that exempt all munis by statute).
QSBS (§1202)	decoupledDecoupled from IRC §1202 — the state does not follow the federal QSBS exclusion, so gain excluded on the federal return can still be taxed by the state.	→	§1202 okConforms to IRC §1202 — the federal qualified small business stock gain exclusion carries through to the state return.

Coordination priorities

What the household coordinates in the new environment — who owns it, how soon, and what it depends on. New marks a priority the move opens.

Priority	Reason	Urgency	Owner	Depends on
Estate structureNew	Whether the state's estate exposure warrants credit-shelter / QTIP titling or lifetime gifting to move value below the state threshold.	Immediate	estate attorney	estate & inheritance taxes
Residency & domicile	Whether — and how — a change of domicile is worth pursuing, and the facts (days, home, ties) that make it real rather than nominal.	Immediate	advisor + CPA	income taxes, estate & inheritance taxes
Asset titling for step-up	Titling assets to capture the fullest basis step-up the marital-property regime allows at the first death.	Near-term	estate attorney	basis step-up
Loss harvesting	Setting a harvesting cadence that captures the state rate a banked loss offsets, sequenced against the state's loss-carryforward rules.	Near-term	advisor + CPA	income taxes, loss treatment
Asset location	Placing the high-turnover sleeve in tax-advantaged accounts so the state's rate falls on the least of the household's realized gains.	Ongoing	advisor	income taxes

Standing decisions to reconsider

Decisions calibrated to the origin's environment that the move makes stale — worth revisiting, not assuming.

Asset locationRate pressure: severe → high
The state takes 9.9% of every long-term gain at the top — high drag on what a realized return keeps.
Estate structureEstate exposure: none → severe
A state estate tax exempts only $3M — far below the federal ~$14M; severe exposure at death that federal-only planning misses.

Opportunities the move opens

Estate structure reviewOpportunity opens
the estate environment changed on the move.

The action register

Sequenced by the move — what to do before, during, and after the crossing.

Before the move

Model domicile alternativesadvisor
Model the after-tax and estate outcome of the current vs a lower-tax domicile, and list the domicile facts to establish before any move.

During the move

Establish the new domicilehousehold
Take up residence at the destination and begin severing origin-state ties — days present, the primary home, registrations, and affiliations — so the change of domicile is a fact pattern, not a mailing address.

After the move

Review estate titlingestate attorney
Review titling and the credit-shelter / gifting options against the state estate threshold; quantify the exposure at the household's net worth.
Set basis titlingestate attorney
Title (or elect the trust) to capture the fullest first-death basis step-up the regime allows.
Set harvesting cadenceadvisor
Set the annual loss-harvesting cadence and confirm it clears the state's carryforward rules.
Place the sleevesadvisor
Locate the high-turnover sleeve into tax-advantaged accounts and confirm the taxable book is the low-turnover core.

Questions worth asking

Not answers — the questions this move puts on the table, to open the conversation with the household's advisors.

Does the existing estate plan still assume the prior state's exemption and rate — and should any trust now be governed elsewhere?
Which domicile facts — days present, primary home, the ties that follow you — will substantiate the move if a former state examines it?
Is the household titled to capture the fullest first-death step-up the new marital-property regime allows?
Does the harvesting cadence still fit the new state's rate and loss-carryforward rules?
Does the investment policy statement still assume the prior tax environment when it places the high-turnover sleeve?
Which advisors — CPA, estate attorney, custodian — need updated instructions reflecting the new domicile?
Should the timing of charitable gifts or large realizations shift across the move?

This brief becomes one entry in a household's operating file.

The Household Record binds the move to the family's standing decisions, coordination priorities, and advisors — the place this brief is coordinated, not filed.

Prepare this as your Household Record → Start a conversation

Read either environment in full: California Atlas → · Washington Atlas → · weigh the two → · other crossings →

State law reflects 2025 tax-year law; last reviewed 2026-07-07. Every classification is a summary of state law; where a primary-source citation has been verified, it is linked on the card.

What changed

2026-07-07 — First law-review date and honest per-cell source labeling; primary-source citations verified for Illinois, California, New York, Texas, and Florida (more in progress).
2025 — Washington's 7% (+2.9%) excise on long-term capital gains reflected (enacted 2022).
2025 — New Hampshire's Interest & Dividends tax reflected as fully repealed, effective 2025.
2025 — Illinois estate-tax detail tracks the pending SB 2970 as of the review date.

Illustrative / hypothetical — not a real track record and not advice. The tax-management impact figure is a hypothetical, after-tax result from the retroactive application of a tax-management model to ~30 years of proxy-spliced market data on a single illustrative path; no client capital was invested, and hypothetical performance does not guarantee future results. Intended for sophisticated investors; it may not be relevant to your situation, and your actual figure depends on your own holdings, basis, and bracket. State tax facts reflect tax year 2025 and can change — confirm with a tax advisor. Driftwood Wealth is a registered investment adviser; Form ADV and Form CRS are available at adviserinfo.sec.gov.

Driftwood. State tax law reflects 2025 tax-year law; last reviewed 2026-07-07. A Crossing Brief is a view of the reasoning graph — it authors no facts of its own.