Oregon Estate
Tax Calculator

Oregon imposes a state estate tax with the lowest exemption in the nation at **$1 million**. Rates range from 10% to 16% on taxable estates above the exemption.

The $1 million threshold has remained unchanged since Oregon decoupled from the federal estate tax in 2003, and there is no indexing for inflation.

At this threshold, Oregon's estate tax captures a far broader range of estates than any other state. A single-family home in the Portland metro area, combined with retirement accounts and a modest life insurance policy, can easily exceed $1 million.

This makes estate tax planning relevant for a much wider range of families than in most jurisdictions.

The federal exemption of $15 million is more than thirteen times Oregon's **$1 million** exemption — the widest gap in the country. The vast majority of Oregon estates that owe state estate tax owe nothing at the federal level.

Oregon does not offer portability of its exemption, so married couples must use trusts to preserve both spouses' $1 million exemptions.

Oregon's natural resource discount (NRD) allows a 100% deduction for the value of certain natural resource property (primarily timber and farm land), which can significantly reduce or eliminate estate tax for agricultural and timber estates. This deduction has no federal equivalent and is critical for rural Oregon estate planning.

Given the $1 million threshold, estate tax exposure is extremely common in Oregon. Credit shelter trusts, irrevocable life insurance trusts, and gifting programs are standard recommendations.

The low threshold also means that even moderate appreciation in real estate values can push a previously non-taxable estate into taxable territory.

Oregon does not impose an inheritance tax. However, the state's income tax rate (up to 9.9%) affects planning for retirement account distributions and trust income.

Oregon taxes trusts based on the trustee's or beneficiary's Oregon residence, so trust siting decisions should consider both estate and income tax implications. Also evaluate the natural resource discount for estates with timber holdings, particularly in southern and eastern Oregon counties.

With Oregon's $1 million exemption, estate tax exposure is common. Use this estimator to quickly determine Oregon estate tax liability and evaluate planning alternatives.

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Oregon residents with taxable estates face a two-layer system: the federal estate tax (exemption of $15 million in 2025, top rate of 40%) and the Oregon estate tax (exemption of $1 million). The gap between these exemptions creates a range where only the state tax applies.

An estate valued at $8 million, for example, may owe Oregon estate tax while owing nothing at the federal level.

The federal return (Form 706) allows a deduction for state estate taxes paid, which partially offsets the double-taxation effect but does not eliminate it. The state tax is deductible on the federal return as an estate administration expense or under the state death tax credit rules, depending on the estate's circumstances.

The net result is that combined effective rates in Oregon can exceed 45% on estates large enough to trigger both layers.

Planning for this interaction requires modeling both taxes simultaneously. Strategies that reduce the Oregon taxable estate — such as lifetime gifts, charitable bequests, and irrevocable trusts — may also reduce federal exposure, but the relative benefit depends on where the estate falls within each jurisdiction's rate brackets.

Use our Oregon estate tax calculator to model both layers side by side, and check the Oregon probate cost calculator to estimate administration expenses.

Federal law permits a surviving spouse to use the deceased spouse's unused exclusion (DSUE) — commonly called portability — by timely filing Form 706 for the first-to-die spouse. This allows married couples to shelter up to $30 million federally without trust-based planning.

However, most estate-tax states, including Oregon, do not offer portability of the state exemption.

This asymmetry makes bypass trusts (also called credit shelter trusts or B trusts) essential in Oregon. At the first spouse's death, funding a bypass trust up to the Oregon exemption amount preserves that exemption for state tax purposes.

Without the trust, the unlimited marital deduction passes everything to the surviving spouse tax-free at the first death — but the surviving spouse's estate then has only one Oregon exemption, effectively wasting the first spouse's.

The bypass trust should be sized carefully. Overfunding it beyond the Oregon exemption wastes the marital deduction benefit; underfunding it fails to capture the full state exemption.

For married couples with estates above $1 million but below $15 million, the bypass trust is the single most impactful planning tool available. Review your plan with the Oregon estate tax estimator, and use the executor fee calculator to account for administration costs in your projections.

The $1 million Oregon exemption establishes a lower threshold than the federal exemption, making proactive estate reduction strategies more urgent. Irrevocable trusts are the primary vehicle: irrevocable life insurance trusts (ILITs) remove life insurance proceeds from the taxable estate, spousal lifetime access trusts (SLATs) allow married couples to remove assets while retaining indirect access, and qualified personal residence trusts (QPRTs) transfer a home at a discounted gift tax value.

Annual exclusion gifting — currently $19,000 per recipient (2025) — reduces the taxable estate dollar-for-dollar without consuming the lifetime gift exemption. For Oregon residents near the $1 million threshold, a sustained gifting program over several years can bring the estate below the state exemption entirely.

Charitable remainder trusts (CRTs) and charitable lead trusts (CLTs) offer additional reduction while generating income tax deductions.

GRATs (grantor retained annuity trusts) are particularly effective in low-interest-rate environments, transferring asset appreciation to beneficiaries with minimal or zero gift tax cost. For Oregon business owners, entity-level planning — family limited partnerships, LLCs with valuation discounts, and buy-sell agreements — can reduce the reportable value of closely held interests for both state and federal purposes.

Compare strategies using the Oregon estate tax calculator or find a Oregon estate planning attorney.