Hands holding a signed document titled "Washington State Estoppel Gains Tax Reform Act" at a conference table overlooking a city skyline

Washington’s New Estate and Capital Gains Tax Changes Explained

SimplyTrustSimplyTrust Editorial···3 min read

Discover how Washington’s new tax law affects your estate planning.

Are you a Washington resident wondering how recent tax changes will affect your estate planning? On May 20, 2025, Governor Ferguson signed Engrossed Substitute Bill 5813, initiating significant transformations in estate and capital gains taxes in Washington State. This new legislation targets higher earners and aims to support education funding through a more progressive tax structure.

One of the most notable changes is the introduction of a 2.9% excise tax on capital gains exceeding $1 million from the sale of long-term capital assets. Combined with Washington’s existing 7% capital gains tax, this results in a hefty 9.9% tax for those affected. What’s crucial to note is that this tax will be applied retroactively to sales occurring on or after January 1, 2025. This could mean a significant tax liability for those selling high-value assets, so it’s time to talk to your financial advisor.

In terms of estate planning, the legislation also raises the individual estate tax exclusion amount from $2.193 million to $3 million for those passing away on or after July 1, 2025. This provides a bit more breathing room for many families and could lead to changes in how estates are structured. Moreover, the new law stipulates annual inflation adjustments to this exclusion starting January 1, 2026, which means that the exclusion will continue to grow over time, helping to offset inflation.

For taxable estates exceeding $1 million, the increased estate tax rates may catch some families off guard. For instance, consider a $15 million estate; the tax implications change dramatically depending on whether the individual dies on June 30 or July 1. It’s essential to understand these timing nuances as they can lead to significant differences in tax liability.

Additionally, the law raises the deduction for qualified family-owned business interests to $3 million, providing crucial support for family enterprises during the estate transfer process. This change encourages family businesses to remain intact and operational, which can be a lifeline for families facing estate taxes.

In summary, these legislative changes represent a pivotal moment for estate and capital gains taxation in Washington State. If you haven’t reviewed your estate plan recently, now is the time to consult with an estate planning professional to navigate these new regulations effectively. Stay informed and proactive to ensure your legacy is preserved in light of these changes.

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Washington Estate Law GuideProbate costs, will requirements, trust rules, and intestate succession.

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