This article is adapted from "The Oregon Estate Tax Anomaly," a paper I wrote for the Advanced Estate Planning course at Boston University in spring 2026. It has been condensed for a general audience and updated through October 2026. You can read the original paper (PDF), with full citations, as submitted.
Most Americans will never pay a federal estate tax. Beginning in 2026, the federal exemption is $15 million per person, or $30 million for a married couple, and it is indexed for inflation. Oregon is a different story. Oregon taxes estates worth $1 million or more, the lowest threshold of any state that imposes its own estate tax. That figure has not changed since 2006.
The result is that Oregon's estate tax now reaches families who would never think of themselves as wealthy.
Update, October 2026: The $1 million threshold remains in effect. Senate Bill 1511, which would have raised the exemption to $2.5 million, passed the Oregon Senate but died in the House when the 2026 session ended. Initiative Petition 51, which would have repealed the estate tax entirely, did not gather enough signatures by the July 2026 deadline and is not on the November 2026 ballot. The next opportunity for change is the 2027 legislative session.
Why Oregon's Estate Tax Reaches Middle-Class Families
Consider an Oregonian who bought a modest Portland home for $180,000 in 1995. Today that home may be worth $850,000. Add $400,000 in retirement accounts and her estate is above $1 million. She will leave a taxable estate not because she is wealthy, but because Oregon's threshold has stood still for two decades while home values climbed.
When the $1 million figure was carried into Oregon's current estate tax law in 2011, the median Portland home sold for roughly $245,000. Today it is well over $500,000, and homes in many neighborhoods regularly sell for more than $800,000. A home, a retirement account, and a life insurance policy can be enough to cross the line.
How the Oregon Estate Tax Is Calculated
An Oregon estate tax return is required when the gross estate is worth $1 million or more. The tax uses graduated rates from 10% to 16% on the portion of the estate above $1 million, with the top rate reaching estates above $9.5 million. Approximate tax at several estate sizes:
- $1.1 million estate: about $10,000
- $1.5 million estate: about $50,000
- $2 million estate: about $101,250
- $3 million estate: about $205,000
- $5 million estate: about $425,000
- $10 million estate: about $1.1 million
These figures assume no deductions or credits. Amounts left to a surviving spouse or to charity can reduce or defer the tax, and the actual calculation depends on how the estate is structured.
Several features of Oregon's system catch families by surprise:
- No portability between spouses. Under federal law, a surviving spouse can use the unused exemption of the spouse who died first. Oregon has no equivalent. If the first spouse leaves everything outright to the survivor, the first spouse's $1 million exemption is lost, and the couple may shelter only $1 million instead of $2 million.
- No Oregon gift tax. Oregon taxes transfers at death, not lifetime gifts. That makes lifetime gifting a useful planning tool, discussed below.
- Out-of-state owners of Oregon property. A nonresident who owns Oregon real estate, such as a vacation home on the coast, may owe Oregon estate tax. The tax is computed as if the person lived in Oregon and then apportioned based on the share of the estate located here. Advance planning can often reduce this exposure.
- Relief for farms, forests, and fishing businesses. Families who own and actively operate qualifying natural resource property may be able to exclude up to $15 million of that property, or claim the older natural resource credit, if strict ownership, participation, and family-succession requirements are met before and after death.
How Oregon Compares to Washington and Massachusetts
Twelve states and the District of Columbia impose their own estate tax. Two are especially useful comparisons for Oregon.
Washington shares Oregon's Pacific Northwest economy but has a higher exemption of about $3 million. In 2025, Washington raised its top estate tax rate to 35%, the highest in the country. The change drew immediate criticism and reports of wealthy residents leaving the state. In 2026, Washington reversed course and restored a 20% top rate for deaths on or after July 1, 2026. The experience shows how quickly a headline-grabbing rate increase can backfire.
Massachusetts had the same $1 million threshold as Oregon until 2023, when it raised its exemption to $2 million. Oregon reform advocates often cite Massachusetts as a model. The Massachusetts change is not indexed for inflation, so it will erode over time just as Oregon's has. It also added a new exclusion for in-state real estate owned by nonresidents, which Oregon does not offer.
Like Oregon, neither Washington nor Massachusetts allows portability between spouses, and neither imposes a separate gift tax.
Planning Strategies for Oregon Families
Because the threshold is so low, estate tax planning in Oregon is not just for the very wealthy. Common tools include:
Credit Shelter Trusts for Married Couples
For married couples with combined assets above $1 million but below roughly $5 million, a credit shelter trust (sometimes called a bypass trust) is the foundational tool. At the first spouse's death, assets up to Oregon's $1 million exemption can be placed in a trust that benefits the surviving spouse but is not taxed again at the survivor's death. This preserves the first spouse's exemption that would otherwise be lost.
Well-drafted plans often build in flexibility through disclaimers, so the surviving spouse can decide after the first death how much to place in the trust based on current values and tax law. That flexibility matters because credit shelter trusts have tradeoffs:
- Assets in the trust generally do not receive a second step-up in income tax basis when the surviving spouse dies.
- The trust needs its own tax ID number and may need to file annual income tax returns.
- Setting up and funding the trust after the first death adds legal and administrative cost.
In some cases, creative structuring can preserve much of the basis benefit while still capturing the Oregon exemption. These decisions are best made with current numbers in hand.
Lifetime Gifts
Because Oregon has no gift tax, gifts made during life can reduce the estate that Oregon will tax at death. In 2026, each person may give up to $19,000 per recipient without using any federal exemption. A married couple with three children and six grandchildren could move $342,000 per year out of their estates this way. Larger gifts require a federal gift tax return but generally produce no tax while the $15 million federal exemption is available. Gifts should be weighed against your own future needs and the loss of a basis step-up on the gifted assets.
Advanced Trust Planning
For larger estates, lifetime gifts can be made to irrevocable trusts designed for specific goals:
- Spousal Lifetime Access Trusts (SLATs) remove assets from both spouses' Oregon taxable estates while allowing the beneficiary spouse to receive distributions.
- Grantor Retained Annuity Trusts (GRATs) pass future appreciation on assets to children with little or no gift tax cost.
- Intentionally Defective Grantor Trusts (IDGTs) allow appreciating assets to be sold to a trust so future growth occurs outside the estate.
- Irrevocable Life Insurance Trusts (ILITs) keep life insurance proceeds out of the taxable estate.
Changing Residence
Some Oregonians respond to the estate tax by moving to a state without one, such as Idaho, Nevada, Arizona, or California. A move can be effective, but it carries real personal costs, and keeping Oregon real estate after moving can still leave part of the estate subject to Oregon tax. For families with deep roots here, planning that does not require relocating is usually the better fit.
Where Reform Stands
Oregon's estate tax has drawn repeated legislative attention since at least 2019. In 2025, four reform bills were introduced, ranging from a flat 7% rate above $7 million, to full conformity with the federal exemption, to simple inflation indexing. None made it out of committee.
In 2026, Senate Bill 1511 offered a compromise: raising the exemption to $2.5 million with inflation indexing, while increasing rates on larger estates to a new top rate of 19.9%. It passed the Senate 22 to 5 but met resistance in the House over a steep effective marginal rate just above the new threshold, a constitutional question about where tax bills must originate, and opposition to indexing. The bill died in committee when the session ended in March.
Initiative Petition 51, the "End the Death Tax" measure, sought to repeal the tax entirely through the ballot. It did not gather enough signatures by the July 2026 deadline, and its organizers have said they plan to return in 2028.
The challenge for Oregon is that two decades without adjustment have made small fixes feel inadequate, while comprehensive change has so far proven politically out of reach. Washington's experience warns against reforms built around headline-grabbing top rates. Massachusetts shows that a meaningful threshold increase is achievable.
What This Means for You
Until the law changes, the practical advice is the same. If your assets, including your home, retirement accounts, and life insurance, are approaching or above $1 million, your estate plan should account for Oregon estate tax. Good planning balances tax savings against other important goals: keeping the plan as simple as possible, preserving the income tax basis step-up for your heirs, and keeping administration costs reasonable.
At Hillsboro Law Group PC, we help Oregon families design estate plans that address Oregon estate tax without unnecessary complexity. If you would like to know how the estate tax may affect your family, schedule an Estate Planning Strategy Session.
This article provides general information and does not constitute legal or tax advice. Tax figures are approximate and based on Oregon law as of October 2026. Estate planning recommendations depend on your family, assets, and circumstances.