WA Estate Tax and Business Owners: What You Need to Know Before You Sell
Something significant happened on July 1, 2026, that most business owners in Washington State haven't fully processed yet.
The state's estate tax rates rolled back — meaningfully. The top marginal rate, which had reached 35% on estates above $9 million, dropped to 20%. The rates throughout the bracket structure also came down. For families with significant wealth, this is real money.
But here's the part that matters just as much and gets less attention: the exemption — the amount you can leave before the tax applies at all — is now frozen at $3 million. It was indexed to inflation before; it isn't anymore. The legislature changed the rates but removed the inflation adjustment. Which means that over time, as asset values rise, more families will cross the $3 million threshold — not because they got significantly wealthier, but because the exemption didn't keep up.
For business owners, both of these changes matter. The lower rates are welcome. The frozen exemption is a reminder that this tax is not going away, and that planning before a transaction is not optional.
"The planning window that matters isn't the six months of a transaction. It's the two to three years before it."
What the WA Estate Tax Actually Is
Washington State levies a separate estate tax — independent of the federal estate tax — on the value of a resident's taxable estate at death. As of July 1, 2026, the exemption is $3 million. Estates above that threshold are taxed on the excess at graduated rates beginning at 10%, rising to 20% on amounts above $9 million.
There is no portability between spouses in Washington. Each spouse has their own $3 million exemption, but it does not transfer automatically to the surviving spouse the way the federal exemption does. Planning for couples requires specific trust structures to take advantage of both exemptions.
Washington does not conform to federal estate tax law, and the exemption no longer adjusts for inflation. A business owner with a $5 million estate today — and a business growing at even a modest rate — will have meaningfully more exposure five years from now under the same exemption.
2026 WA Estate Tax — Key Numbers
$3,000,000 — exemption amount (frozen as of July 1, 2026; no longer inflation-indexed)
10% — bottom rate on taxable estates above $3M
20% — top rate on amounts above $9M (reduced from 35% as of July 1, 2026)
No portability — each spouse must plan separately
No Washington estate tax deduction for federal purposes
How It Applies to a Business Sale
This is where things get specific for business owners, and where the planning window becomes critical.
When you sell your business, the proceeds — net of the federal taxes paid on the gain — become part of your estate. If those proceeds push your total estate above $3 million, or increase how far above it you already are, the estate tax exposure increases accordingly.
Consider a straightforward example: a business owner with a $2 million investment portfolio and a business valued at $4 million sells for a $3.8 million net-of-federal-tax proceeds. Total estate: $5.8 million. WA estate tax exposure at today's rates: approximately $280,000.
That number is real. And it is determined in large part by decisions made — or not made — before the sale closes.
Why timing matters within the transaction.
Gifting strategies, trust structures, and charitable vehicles that reduce estate tax exposure generally need to be implemented before the proceeds arrive — not after. Once the wire clears, the estate has already been established at that value. Some strategies can still be executed post-close, but the full range of options is significantly narrower.
The single most common mistake I see: a business owner who knew about the WA estate tax, intended to "do something about it," and ran out of time before the deal moved faster than expected.
What You Can Do About It — Before the Sale
There are legitimate, well-established strategies for reducing WA estate tax exposure in the context of a business sale. None of them are magic. All of them require time, coordination between your estate attorney, CPA, and wealth advisor, and implementation before the transaction closes.
Annual exclusion gifting.
The federal annual gift tax exclusion in 2026 is $19,000 per recipient. For a business owner with several children and grandchildren, systematic gifting over a 2–3-year period before a sale can meaningfully reduce the taxable estate. These gifts must be made before the sale proceeds arrive to shift that value out of the estate. There is no Washington-specific gift tax, which makes gifting particularly effective.
Gifting business interests before the sale.
In some situations, gifting a minority interest in the business to family members — or to trusts for their benefit — before a sale can be highly effective. Minority interests typically carry valuation discounts (for lack of marketability and lack of control), which means you can transfer more value while using fewer exemption dollars. This requires advance planning, a qualified business valuation, and coordination with your transaction team.
Irrevocable trusts and SLATs.
A Spousal Lifetime Access Trust (SLAT) or other irrevocable trust can remove assets from the taxable estate while retaining some benefit to the family. These structures require time to implement and review, and they have tradeoffs — the assets transferred to an irrevocable trust are no longer directly accessible to the grantor. They need to be created well in advance of the transaction; a trust executed the week before closing is unlikely to achieve the intended tax result.
Donor-Advised Funds and charitable giving.
For business owners with philanthropic intent, contributing a portion of sale proceeds — or business interests before the sale — to a donor-advised fund can accomplish two things simultaneously: reducing the taxable estate and creating a federal income tax deduction. A Charitable Remainder Trust (CRT) can provide income during the donor's lifetime while removing assets from the estate. These vehicles are most powerful when implemented before the transaction, not after.
Installment sales and earnouts.
If the deal structure allows it, receiving proceeds over time — rather than in a lump sum at closing — can spread the estate impact across multiple years and create additional planning flexibility. This is a negotiation with the buyer and not always available, but worth considering when the estate tax picture is a primary concern.
The Domicile Question
I want to address this directly, because I have this conversation frequently: moving out of Washington State before a sale is a legitimate estate tax strategy. If you establish legal domicile in a state with no estate tax — Nevada, Texas, Arizona, Florida — before the sale closes, the WA estate tax does not apply to the proceeds.
But there are two things that make this harder than it sounds.
First, it has to be real. Washington State audits domicile claims. The state looks at where you spend your time, where your vehicles and licenses are registered, where your doctors and accountants are, where your children attend school, where your club memberships are, where you vote. A mailing address and a second home are not enough. You have to actually move.
Second, it has to happen before the sale. Establishing domicile after the sale closes does not change the tax treatment of proceeds you received as a Washington resident.
I'm not discouraging this option — for the right family, in the right circumstances, it makes complete financial sense. What I am saying is that it requires planning and execution that starts 12 to 18 months before the transaction, not after you've decided to sell.
Why This Requires a Coordinated Team
"Your estate attorney, your CPA, and your wealth advisor all need to be in the same conversation — before the transaction begins."
WA estate tax planning in the context of a business sale is not a single-advisor problem. The estate structure, the transaction structure, the gifting strategy, the investment plan for the proceeds, and the real estate picture all need to align — and they need to be designed together, not sequentially.
Your estate attorney designs the legal structures. Your CPA models the tax outcomes. Your wealth advisor builds the investment framework for the proceeds and coordinates the overall financial picture. When those three conversations are happening separately — in different offices, on different timelines — you get an estate plan, a tax return, and an investment account. What you don't get is a coordinated strategy.
At PAM, the coordination role is something we take seriously and take on explicitly. We work alongside your estate attorney and CPA, not instead of them. We bring the financial picture into the room so that legal and tax decisions are made with full information about investment strategy, real estate, and long-term wealth goals.
The Planning Checklist for Business Owners
1. When do you plan to sell? Work backward from that date to understand what's achievable.
2. What will your estate look like after the proceeds arrive? Run the WA estate tax calculation now.
3. Have you gifted any business interests to family or trusts? The time to consider this is before you list.
4. Is your estate plan current? Trusts, beneficiary designations, and WA-specific provisions should be reviewed now.
5. Is your team coordinated? CPA, estate attorney, and wealth advisor should be talking to each other, not just to you.
6. Have you considered the domicile question — and if so, are you committed to doing it properly?
Let's run the numbers for your situation.
PAM works with business owners in the Pacific Northwest on pre-transaction estate planning, financial coordination, and post-sale investment strategy. Contact mike@privateasset.com .
This article is published for informational purposes and does not constitute legal, tax, or investment advice. Washington State estate tax information reflects law as of July 1, 2026, including the rate rollback effective that date. The exemption amount, rates, and planning strategies described are general in nature; individual situations vary significantly. Please consult your estate attorney and CPA before making any estate planning or transaction decisions. Private Asset Management, Inc. is a fiduciary registered investment adviser based in Kirkland, Washington.