Washington millionaires tax clears House after marathon debate

The House approved a 9.9% income tax on annual income over $1 million that is projected to raise about $3.5 billion per year and affect roughly 20,000 taxpayers, with the tax slated to take effect in 2028. The bill (SB 6346) now returns to the Senate for final approval and, if enacted, would direct revenue to offsets including repeal of sales tax on diapers/OTC drugs, expand the Working Families Tax Credit to ~460,000 households, exempt small businesses from B&O tax under certain thresholds, and allocate 5% of revenues to child care; Gov. Ferguson signaled support. Legal risk is material given Washington Supreme Court precedent treating income as property and strong Republican claims the measure is unconstitutional, so litigation and political challenges are likely.

Analysis

We should expect concentrated behavioral responses from high-net-worth households and their advisors well before any final legal resolution: accelerated realisation of gains, tactical entity conversions, and a spike in bespoke tax planning activity. That front-loaded activity will boost transactional volumes and fee income at broker-dealers and wealth managers in the near term (weeks→months), while simultaneously creating a temporary distortion in capital-gains timing that can depress realized valuations in the subsequent 12–24 months.

Over a multi-year horizon the largest economic lever is migration and compensation design. Employers in high-concentration labor markets will face higher effective retention costs and may substitute cash compensation with equity or remote work options; this will mute local housing demand at the top end and likely reallocate some leasing and construction activity toward lower-cost Sun Belt metros. The endgame is not a binary “boom or bust” for regional real estate — expect a multi-year differential: softer luxury inventory/prices locally and incremental strength in destination markets.

Legal uncertainty is a dominant catalyst. Prolonged court challenges will create a multi-stage volatility profile for state credit spreads and municipals tied to local revenue expectations: acute moves on ruling milestones, rangebound drift while matters are litigated, and structural re-rating only after jurisprudence is settled (likely 12–36 months). That timeline creates clear tactical windows to trade relative-value across wealth managers, regional real-estate exposure, and short-duration municipal instruments.

Key Decisions for Investors

• Long Morgan Stanley (MS) equity or 12–18 month call options: entry within 0–3 months to capture near-term fee tailwinds from accelerated tax-planning flows. Target +20–30% upside vs ~10–15% downside if markets reprice AUM growth; size as a tactical overweight (risk-managed to 2–3% of book).
• Buy 9–12 month put spreads on Redfin (RDFN) to express localized housing softening: buy-to-open a modest-cost put spread (limit premium) rather than outright puts to control theta. Risk/reward ~1:3 if migration/price pressure hits listings and volume; keep position small and hedge with long Sun-Belt builder exposure.
• Pair trade — long D.R. Horton (DHI) or Lennar (LEN) vs short Redfin (RDFN): 6–18 month horizon to capture relative outperformance as demand shifts to lower-cost markets. Target asymmetric return: 15–30% upside on the long leg with capped downside via position sizing and short proceeds funding part of the long.
• Reduce duration exposure to state-specific long-dated municipals and increase allocation to short-duration muni ETFs (e.g., SUB) or short-term Treasuries (SHV) for 6–24 months. This is a defensive trade ahead of legal outcomes that could transiently widen local credit spreads; expected benefit is volatility reduction and preserved liquidity.