Oregon Inheritance Tax: Estate Tax Thresholds and Exemptions

Oregon does not have an inheritance tax. It does impose an estate tax, and that tax kicks in at a much lower threshold than the federal one — $1 million — so a growing number of Oregon families face it as home values and retirement balances rise. The estate itself pays the tax before assets are distributed, so heirs don’t receive a personal bill from the state.

Inheritance Tax and Estate Tax Are Not the Same Thing

The difference comes down to who writes the check. An inheritance tax falls on each beneficiary based on what they receive and their relationship to the deceased. An estate tax falls on the total value of the deceased person’s assets before anything is distributed, and the estate pays it.¹ Only five states currently impose an inheritance tax: Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania. Oregon is not one of them.

So if you’re inheriting from an Oregon resident, you personally will not owe Oregon a tax on what you receive. What can shrink your inheritance is the Oregon estate tax, paid out of estate assets before distribution.

When the Oregon Estate Tax Applies

The estate tax applies when the gross estate — everything the deceased owned at death — reaches $1 million.² That number is set by statute and is not adjusted for inflation, which is why more Oregon estates get pulled in each year. Only the portion above $1 million is actually taxed, and the rates run through ten progressive brackets:

$1,000,000 to $1,500,000: 10%
$1,500,000 to $2,500,000: 10.25%
$2,500,000 to $3,500,000: 10.5%
$3,500,000 to $4,500,000: 11%
$4,500,000 to $5,500,000: 11.5%
$5,500,000 to $6,500,000: 12%
$6,500,000 to $7,500,000: 13%
$7,500,000 to $8,500,000: 14%
$8,500,000 to $9,500,000: 15%
Over $9,500,000: 16%

A $2 million taxable estate, for example, owes 10% on the first $500,000 above the threshold ($50,000) plus 10.25% on the next $500,000 ($51,250), for a total of $101,250. The effective rate on the full $2 million works out to about 5%.²

What Counts Toward the $1 Million

Oregon starts with the federal taxable estate and then makes its own adjustments.³ In practical terms, the estate includes:

Real estate, including the primary home, rental property, and vacation property
Bank accounts, brokerage accounts, stocks, bonds, and mutual funds
IRAs, 401(k)s, and other retirement accounts
Ownership interests in partnerships, LLCs, and corporations
Vehicles, jewelry, art, and collectibles
Life insurance proceeds payable to the estate, or from policies the deceased owned

The estate can subtract debts, funeral costs, and administrative expenses. Charitable bequests and property passing outright to a surviving spouse also come out of the calculation. Because Oregon builds on the federal number, executors often have to work through the federal calculation even for estates well below the federal filing threshold.

The Trap for Married Couples

Property left outright to a surviving spouse qualifies for the unlimited marital deduction and is not taxed in the first spouse’s estate.⁴ Oregon follows this rule. Leave everything to your spouse, and no Oregon estate tax is due at your death.

The problem is what happens next. Federal law lets a surviving spouse inherit the first spouse’s unused exemption, a feature called portability. Oregon has no equivalent. Each spouse gets a single $1 million exemption, and if the first spouse’s exemption is not used, it disappears.³ A couple with a combined estate of $2 million who could shelter the whole thing with planning ends up paying Oregon tax on $1 million at the surviving spouse’s death if everything simply passed to the survivor.

Oregon does allow a workaround through a special marital property election under ORS 118.016, which lets the first spouse’s $1 million exemption be preserved through trust planning while still providing for the surviving spouse. Couples with combined assets anywhere near $2 million should work through this with an estate planning attorney rather than relying on the marital deduction alone.

Non-Residents Who Own Oregon Property

Oregon’s estate tax reaches beyond state borders. If a non-resident dies owning real estate or tangible personal property in Oregon, the estate owes Oregon estate tax on a proportional share.³ Oregon calculates the tax as if the whole estate were taxable, then multiplies by the ratio of Oregon property value to total estate value. A Washington or California resident with a coast home should factor this in; the property alone can pull the estate into Oregon’s system.

Breaks for Farm, Forest, and Fishing Property

Oregon offers two significant benefits for estates that include natural resource property passing to family members.

Natural Resource Credit

Under ORS 118.140, an estate can claim a credit tied to the value of qualifying natural resource property. The credit is available when the adjusted gross estate is $15 million or less, the natural resource property makes up at least 50% of the Oregon estate, the property transfers to a family member, and the deceased or a family member actively operated the business for at least five of the eight years before death. The credit calculation is capped at $7.5 million of property value.³ If the family stops using the property in the qualifying business within five years of death, the credit is clawed back on a sliding scale.

Natural Resource Property Exemption

For deaths on or after July 1, 2023, Oregon offers a separate exemption of up to $15 million for natural resource or fishing property transferred to family members. The 2025 legislature expanded the exemption through House Bill 3630, broadening ownership requirements to include beneficial interests in business entities or trusts and allowing property exchanges. Senate Bill 485 relaxed participation requirements for forestland to reflect that forest management activity varies with the growth cycle. Those changes apply to deaths on or after January 1, 2026.⁵ An estate cannot claim both the credit and the exemption on the same property.

How It Fits With the Federal Estate Tax

Oregon’s $1 million threshold sits far below the federal exemption, which is $15 million per individual for 2026 after being permanently increased by the One, Big, Beautiful Bill signed into law in July 2025.⁶ Most Oregon estates that owe state tax owe nothing federally. A $5 million estate is a good example: it triggers Oregon tax but stays well under the federal line.

For estates large enough to trigger both, the federal rate tops out at 40%, and Oregon estate tax paid is deductible on the federal return. The federal return (Form 706) is due nine months after death; Oregon’s return is due at twelve months.⁷

The Step-Up in Basis for Heirs

One tax feature that benefits heirs directly involves capital gains, not estate tax. Under federal law, inherited assets get a new tax basis equal to fair market value at the date of death.⁸ If your parent bought a house for $150,000 and it was worth $600,000 at death, your basis is $600,000. Sell it for $620,000, and you owe capital gains tax only on the $20,000 gain. The step-up applies whether or not the estate owed any estate tax.

Lifetime Gifts

Because Oregon starts from the federal taxable estate, gifts made during life can reduce what’s left to tax. For 2026 you can give up to $19,000 per recipient per year without filing a gift tax return or touching your lifetime exemption.⁶ Oregon has no gift tax of its own, so lifetime gifting reduces the Oregon taxable estate without triggering a separate state tax. For estates hovering just above the $1 million threshold, a consistent gifting pattern can sometimes eliminate the Oregon tax entirely.

Filing, Payment, and Penalties

If the gross estate is $1 million or more, the executor or personal representative must file Form OR-706, the Oregon Estate Transfer Tax Return, within twelve months of the date of death, and the tax is due on the same twelve-month timeline.²

An automatic six-month extension to file is available, but it does not extend the payment deadline. A payment extension has to be requested separately and is granted only in limited circumstances. Interest runs on unpaid tax from the original due date regardless of any extension.

Oregon charges a 5% penalty for filing late and a separate 5% penalty for paying late. Both can apply at once, on top of interest.² For estates that also owe federal tax, the IRS adds its own late-filing penalty of 5% per month up to 25%, plus a 0.5% per month late-payment penalty capped at 25%.⁹ Because the federal deadline is three months earlier than Oregon’s, executors of larger estates need to track two separate clocks.

1
Oregon State Legislature. Oregon’s Inheritance Tax
2
Oregon Department of Revenue. Form OR-706, Oregon Estate Transfer Tax Return Instructions
3
Oregon State Legislature. Oregon Revised Statutes Chapter 118 – Estate Tax
4
Internal Revenue Service. Frequently Asked Questions on Estate Taxes
5
Oregon Department of Revenue. Estate Tax Report 2026 Edition
6
Internal Revenue Service. What’s New – Estate and Gift Tax
7
Internal Revenue Service. Instructions for Form 706
8
Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent
9
Internal Revenue Service. Failure to File Penalty