Washington’s Millionaire Tax: Will It Hurt Home Values in Seattle, Bellevue, and Snohomish County?

by Cheryl Dillon

If you own a home in Bellevue, Seattle, Edmonds or anywhere in Snohomish or King County, you may be wondering:

Will Washington’s new Millionaire Tax affect my property value?

I’ve had clients ask:

  • Are wealthy people leaving Washington?
  • Will luxury home prices drop?
  • Should I sell before the market changes?
  • Is this going to impact Seattle real estate?

Short answer?

Probably not in the dramatic way the headlines suggest.

However there are some real things homeowners and investors should understand.

First, What Is Washington’s “Millionaire Tax”?

Washington’s new tax applies a 9.9% tax on annual income over $1 million for ultra-high earners.

Important:

This is not a tax on your home.

It is not a new property tax.

It does not mean appreciation in your house suddenly gets taxed because your home gained value.

That distinction matters.

And frankly, many headlines blur it.

Could It Affect Seattle Area Real Estate?

Possibly… but mostly at the high end.

Luxury Homes May Feel Some Shift

In markets like:

  • Medina
  • Bellevue
  • Kirkland
  • Mercer Island

some wealthy households may rethink:

  • Timing of sales
  • Tax residency
  • Investment allocation
  • Luxury purchases

That could create more negotiating room in the ultra-luxury market.

That does not equal a housing crash.

It may simply mean pricing becomes more disciplined.

For Most Homeowners? Inventory Still Drives Value.

Here is what still matters more:

  • Low housing supply
  • Mortgage rates
  • Tech job growth
  • Population demand
  • Limited buildable land

Those are still driving values in the Puget Sound.

A tax affecting a small percentage of households does not suddenly erase those fundamentals.

Why Some Investors May Like Real Estate Even More

Interesting twist…

Some affluent investors may view real estate as even more attractive.

Why?

Because tangible assets can feel like a defensive place to park wealth.

That could support demand, not weaken it.

Especially for well-located homes.

What About the Proposed 1% Wealth Tax?

There has also been discussion around a proposed 1% wealth tax on certain financial assets over $100 million.

That proposal generally targeted financial assets like stocks and bonds, not owner-occupied residential real estate.

That’s a big reason some investors still view housing as a strong long-term store of value.

My Advice if You’re Thinking of Selling

This is not a “panic and list now” market.

It is a “price strategically and market intelligently” market.

Especially if you own a luxury property.

Today, presentation matters more.

Pricing matters more.

Marketing matters more.

The days of putting a home on the MLS and waiting for ten offers may not be the strategy.

And honestly…

That creates opportunity for sellers who position correctly.

Thinking About Selling in 2026? This May Be Your Window.

Some homeowners are sitting on enormous equity.

Some are waiting for rates to shift.

Some are wondering whether policy changes could soften the luxury market later.

That is exactly why many sellers are asking for a strategy conversation now.

Not because they are panicked.

Because they want to be proactive.

Smart difference.

Bottom Line

Could Washington’s Millionaire Tax affect some luxury market behavior?

Possibly.

Is it likely to crash Seattle-area home values?

Highly unlikely.

Housing supply, rates, and job growth still matter far more.

And if you are wondering how this affects your property value in Bellevue, Edmonds, Mukilteo, Woodway or Snohomish County…

That deserves a real strategy conversation, not a headline.

Curious what policy shifts may mean for your home’s value?

Let’s talk.

I’m happy to show you what buyers are doing in your neighborhood right now and where I see opportunity.

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Cheryl Dillon

+1(425) 954-5622

cheryl.dillon@exprealty.com