How to Advise Clients Moving to Washington: Tax Implications for 2026

How to Advise Clients Moving to Washington: Tax Implications for 2026

Knowing how to advise clients moving to Washington tax implications is now a high-value skill for every solo practitioner. Washington just passed a landmark “millionaires tax” in 2026. Meanwhile, the state still charges no broad income tax. As a result, clients face a confusing mix of savings and surprises. This guide gives you the exact talking points, tables, and strategies you need. Learn to turn this news into a profitable advisory conversation and stronger client trust.

For solo firms, this topic is a perfect entry point into proactive tax strategy planning that goes beyond simple return prep. Advising clients on a state move showcases your value fast. Furthermore, it opens the door to ongoing, high-ticket advisory work.

Table of Contents

• Key Takeaways
• Why Does Washington Matter for 2026 Tax Planning?
• What Should You Tell Clients About Washington’s Millionaires Tax?
• How Does No State Income Tax Change Your Advice?
• How Do Washington Capital Gains and Estate Taxes Affect Clients?
• What Steps Establish Washington Residency for Tax Purposes?
• How Can You Turn This Into an Advisory Service?
• Uncle Kam in Action
• Next Steps
• Related Resources
• Frequently Asked Questions

 

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Key Takeaways

• Washington’s 2026 millionaires tax adds 10% on household income over $1 million.
• The state still charges no broad personal income tax on wages.
• Washington collects a 7% capital gains excise tax and an estate tax.
• The federal estate exclusion rose to $15 million for 2026 under OBBBA.
• Residency documentation protects clients from dual-state tax disputes.

Why Does Washington Matter for 2026 Tax Planning?

Washington has long attracted high earners because it charges no personal income tax. However, 2026 changed the story. The state legislature passed a first-of-its-kind income tax on the wealthiest households. As a result, clients moving there must weigh both the upside and the new cost.

For your firm, this shift is a gift. Clients want clear answers before they sign a lease or list a home. Therefore, you can lead the conversation and earn advisory fees. Many of these clients fit the high-net-worth individual profile that pays well for smart guidance.

Who Is Most Affected by These Changes?

Not every client feels the same impact. Consequently, you must segment your advice by income and asset type. The following groups need the most attention:

• Tech executives with equity income above $1 million per year.
• Business owners planning to sell a company for a large gain.
• Retirees with big brokerage accounts and estate concerns.
• Remote workers leaving high-tax states like California.

Why Timing the Move Matters

Timing can save clients large sums. For example, a client selling stock should study residency dates carefully. Moreover, the federal IRS rules on the tax year still apply on top of state law. You can guide clients on when to close a sale or a home purchase. This kind of planning is where ongoing advisory relationships prove their worth.

What Should You Tell Clients About Washington’s Millionaires Tax?

Learning how to advise clients moving to Washington tax implications starts with this new tax. The legislature approved it in 2026. It levies 10% on annual household income over $1 million. In addition, the $1 million threshold rises with inflation each year.

However, the tax faces a serious challenge. A group called Let’s Go Washington gathered over 500,000 signatures for repeal initiative I-645. The measure will appear on the November 2026 ballot. You can track the state process through the Washington Secretary of State initiatives page. As a result, the tax’s future stays uncertain.

When Does the Tax Actually Start?

Timing is a key detail many clients miss. Even if the tax survives, the state would not collect revenue until 2029. Therefore, clients moving in 2026 or 2027 have room to plan. Furthermore, the delay gives you time to model future scenarios.

The state expects the tax to raise more than $3 billion each year. That money would fund education and some sales tax breaks. Nevertheless, opponents argue it may violate the state constitution. A court fight will likely play out over the next year.

Want a fast, state-specific reference during client calls? Use our Washington Tax Guide for tax professionals to check 2026 thresholds and rules in seconds. This helps you answer client questions with confidence.

How Does No State Income Tax Change Your Advice?

Washington remains one of only a handful of states with no income tax. For a client leaving California, the savings can be huge. California’s top rate exceeds 13%. Therefore, a $500,000 earner could save tens of thousands each year by moving.

Still, the state funds itself in other ways. Washington relies heavily on sales tax and business taxes. As a result, you must remind clients that “no income tax” does not mean “no tax.” The Washington Department of Revenue lists the sales and business rates that still apply.

The Business and Occupation Tax

Business owners face a special rule. Washington charges a Business and Occupation (B&O) tax on gross receipts. This tax applies even when a business loses money. Consequently, self-employed clients need careful entity and revenue planning.

Many business owner clients underestimate this cost. You can add real value by modeling the B&O impact early. To help clients weigh entity choices, you can walk them through the numbers with the Small Business Tax Calculator as a client-facing planning tool. Furthermore, entity structure can reduce total exposure. Explore options through smart entity structuring strategies before your client relocates.

A Simple Savings Example

Consider a remote worker earning $400,000 in wages. In a state with a 9% income tax, they pay about $36,000. In Washington, they pay $0 state income tax on those wages. That is a $36,000 annual saving before other costs.

How Do Washington Capital Gains and Estate Taxes Affect Clients?

Washington may lack an income tax, but it does tax investment gains. The state imposes a 7% excise tax on long-term capital gains above an annual threshold. This tax hits stock and business sale profits hardest. Therefore, a client selling a company needs careful timing advice.

Real estate sales get an important carve-out. The 7% tax generally does not apply to gains from selling real estate. As a result, property investors may find Washington attractive. Your real estate investor clients should know this key exemption.

Federal Estate Rules for 2026

On the federal side, the estate and gift tax exclusion rose sharply. For 2026, the OBBBA set the exclusion at $15 million per person. This change applies to gifts made and decedents dying after December 31, 2025. You can confirm the figure on the IRS estate tax page.

Washington adds its own estate tax on top. The state estate tax uses a much lower exemption than the federal level. Consequently, a client with a $5 million estate may owe Washington estate tax even with no federal bill. This surprise catches many families off guard.

Comparing the Tax Layers

The table below shows how Washington stacks up for a high earner in 2026. Use it to frame client conversations quickly.

Tax Type	Washington 2026 Rule	Planning Note
Wage income tax	None (below $1M)	Major draw for movers
Millionaires tax	10% over $1M (starts 2029)	May be repealed Nov 2026
Capital gains excise	7% on large gains	Real estate exempt
Estate tax	State tax with low exemption	Federal exclusion is $15M

What Steps Establish Washington Residency for Tax Purposes?

 

 

A move only saves tax if the old state agrees the client left. High-tax states audit departing residents aggressively. Therefore, strong records are essential. You must guide clients through a clear residency checklist.

The former state often looks at where the client spends time. It also checks voter registration and driver’s licenses. As a result, half-measures create risk. Your job is to make the move airtight.

A Residency Documentation Checklist

Give every relocating client this action list. Moreover, keep a copy in your files for audit defense:

• Get a Washington driver’s license right away.
• Register to vote in the new county.
• Spend more than 183 days in Washington.
• Update banking, doctors, and mailing addresses.
• Sell or rent out the former primary home.

Handling the Final Part-Year Return

The move year needs a part-year return in the old state. Income earned before the move stays taxable there. Therefore, timing large gains after the move date matters. You can use the pillar tools inside entity-aware tax planning software with scenario modeling to test different move dates and income splits. This helps you show clients the exact savings from each choice.

How Can You Turn This Into an Advisory Service?

Return prep pays once a year. Advisory pays for real value delivered. A Washington relocation plan is a perfect high-ticket offer. As a result, you escape the low-margin trap of hourly compliance work.

Solo practitioners often wear every hat and lack time to sell. Therefore, you need systems that prove value fast. The Uncle Kam platform gives you the AI software, MERNA™ certification, and warm leads to build this offer without starting from scratch. Learn how the Uncle Kam marketplace helps tax pros transition to advisory.

Building a Repeatable Relocation Package

A repeatable process lets you scale without burning out. Furthermore, it makes pricing simple. Your relocation package should include these parts:

• A before-and-after state tax comparison.
• A residency checklist with target dates.
• A timing plan for stock and asset sales.
• An estate and gift review for 2026 rules.

Pricing Your Advisory Work

Price on value, not hours. A client saving $40,000 happily pays $3,000 for the plan. That is a strong return for them and healthy margin for you. Learn to price with confidence through proven tax strategy resources and guides. Consistent packaging turns one-time moves into steady, referral-driven growth.

Uncle Kam in Action: A Solo CPA Wins a Tech Executive Client

Client Snapshot: Maria runs a solo tax firm and wears every hat. She wanted to move beyond seasonal prep work. A referral sent her a tech executive planning a move to Seattle.

Financial Profile: The client earned $1.4 million per year in salary and equity. He also held a $6 million stock portfolio. Moreover, he planned to sell $2 million in stock during the move year.

The Challenge: The client feared triple taxation. He worried about California exit taxes, the new Washington millionaires tax, and the 7% capital gains excise. As a result, he almost delayed the move entirely.

The Uncle Kam Solution: Maria built a full relocation plan using a clear framework. First, she timed the stock sale after the California move date. Next, she confirmed the millionaires tax would not collect revenue until 2029. Then she structured the sale to limit Washington capital gains exposure. Finally, she reviewed the client’s estate against the 2026 federal $15 million exclusion.

The Results: The plan produced strong, measurable outcomes. Her documentation also protected the client from a likely California residency audit.

• Tax Savings: $118,000 in the first year.
• Investment: $9,500 advisory fee paid to Maria.
• ROI: More than 12x return in year one.

Maria turned one move into a recurring advisory client. See more outcomes like this on our client results and case studies page. Her firm now leads with strategy, not just returns.

Next Steps

Turn this knowledge into action today. These steps help you win relocation clients fast:

• Review your book for clients considering a move.
• Build a flat-fee relocation package this week.
• Add a residency checklist to your tax prep and filing workflow.
• Book a Free Strategy Session to get a personalized roadmap for scaling your advisory firm.

Related Resources

• Proactive Tax Strategy Services
• Tax Planning for High-Net-Worth Clients
• The MERNA Method Framework
• Tax Guides for Advisors

Frequently Asked Questions

Does Washington have a state income tax in 2026?

Washington has no broad personal income tax on wages. However, the state passed a 10% millionaires tax in 2026. It applies only to household income above $1 million. Most clients under that level pay no state income tax.

When does the Washington millionaires tax start collecting?

The state would begin collecting revenue in 2029. In addition, the tax faces a repeal vote in November 2026. Therefore, it may never take effect. Advise clients to plan for both outcomes.

Does Washington tax capital gains on real estate?

No. The 7% capital gains excise tax generally exempts real estate sales. It mainly targets large stock and business gains. As a result, property investors often benefit from moving to Washington.

How does the 2026 federal estate exclusion affect clients?

The federal estate and gift exclusion is $15 million for 2026 under OBBBA. Yet Washington charges its own estate tax with a lower exemption. Consequently, some clients owe state estate tax with no federal bill.

How much can a firm charge for a relocation plan?

Solo firms often charge $2,500 to $10,000 per plan. Price on the value delivered, not hours worked. A client saving tens of thousands sees clear ROI. Moreover, these plans open ongoing advisory relationships.

This information is current as of 7/18/2026. Tax laws change frequently. Verify updates with the IRS or the Washington Department of Revenue if reading this later.

Last updated: July, 2026