Oregon Estate Tax Calculator

Pri Geens

Pri Geens

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Oregon Estate Tax Calculator

Estimate the combined federal and Oregon estate tax on an Oregon decedent’s estate. Oregon imposes its own estate tax (Form OR-706, due 12 months after death): a static $1,000,000 exemption with graduated rates from 10% to 16% above it, and no portability of the Oregon exemption. Oregon has no inheritance tax and no gift tax. Three modes: estimate the tax, test a larger estate, or solve for the years of gifting needed to reach zero. Fields marked * are required; Calculate names any left empty.

Oregon rules this calculator enforces: state estate tax YES (ORS Ch. 118, Form OR-706 due 12 months after death): static $1,000,000 exemption applied as a credit — tax equals the graduated 10% to 16% schedule on the Oregon taxable estate less the schedule tax on $1,000,000, so estates at or below $1,000,000 owe $0 (bracket table VERIFY against ORS 118.020); NO portability of the Oregon exemption (federal DSUE only); no inheritance tax; no gift tax; common-law (equitable distribution) state, not community property; spousal elective share of 25% of the augmented estate (ORS 114.605; VERIFY), modeled on the net estate; small-estate affidavit where personal property is $300,000 or less AND real property is $200,000 or less (ORS 114.515 and 114.525; VERIFY); probate venue in the Circuit Court of the county of domicile (36 counties).
Federal: unified estate and gift schedule topping at 40%; basic exclusion $13,610,000 (2024), $13,990,000 (2025), $15,000,000 (2026); federal portability (DSUE) allowed; unlimited marital and charitable deductions; GST 40%.
Oregon exemption is static at $1,000,000; federal exclusion varies by year.
Circuit Court probate venue; the estate tax is state-wide.Required. Please choose an Oregon county.
Select a county to see the Circuit Court venue, the small-estate affidavit thresholds, and the federal and Oregon exemptions for the selected year.

Assets at date of death

Home, land, rental buildings at fair market value (also tested against the $200,000 small-estate real-property limit).Enter 0 or a positive amount.
Checking, savings, CDs, stocks, bonds, mutual funds.Enter 0 or a positive amount.
IRAs, 401(k)s, 403(b)s, pensions, annuity contracts.Enter 0 or a positive amount.
Death benefit includible when the decedent held any incident of ownership.Enter 0 or a positive amount.
Closely held business, timber and farm interests, vehicles, receivables, trusts includible in the estate.Enter 0 or a positive amount.
Oregon is a common-law (equitable distribution) state, not community property, so no community-property halving or double step-up applies.

Debts and administration costs

Deductible obligations of the decedent.Enter 0 or a positive amount.
Deductible when paid by the estate.Enter 0 or a positive amount.
Deductible administration expense.Enter a percentage between 0 and 25.
Filing fees, publication, appraisal costs.Enter 0 or a positive amount.
Deductible if not compensated by insurance.Enter 0 or a positive amount.

Bequests and marital status

Unlimited marital deduction for a citizen spouse or a QDOT (federal and Oregon).Enter 0 or a positive amount.
Unlimited deduction for qualifying charities.Enter 0 or a positive amount.

Prior gifts, portability and GST

Post-1976 taxable gifts; they count toward the federal exclusion and the Oregon base. Oregon has no gift tax.Enter 0 or a positive amount.
Federal portability only; Oregon does NOT port its $1,000,000 exemption.Enter 0 or a positive amount.
Federal GST at a flat 40% on Form 706 Schedule R.Enter 0 or a positive amount.
Equals the federal basic exclusion for the year of death.Enter 0 or a positive amount.

Gifting plan

Required in gifting mode. Annual-exclusion gifts are not taxable gifts.Required in gifting mode. Enter 1 or more donees.
Amounts above the annual exclusion become taxable gifts.Enter 0 or a positive amount.
Gifts carry over basis and lose the step-up at death.Enter 0 or a positive amount.
Oregon’s low $1,000,000 exemption can require many years; raise this if needed.Enter a whole number between 1 and 200.

How it works

  • Oregon has its own estate tax. Form OR-706 applies a static $1,000,000 exemption with graduated 10% to 16% rates above it (implemented as a credit equal to the schedule tax on $1,000,000), due 12 months after death. Estates at or below $1,000,000 owe $0 to Oregon. The bracket table is flagged VERIFY against ORS 118.020.
  • No Oregon portability. A surviving spouse cannot inherit the unused Oregon exemption; only the federal DSUE ports. Credit-shelter planning matters in Oregon.
  • Federal estate tax also applies above the federal basic exclusion using the unified 18% to 40% schedule; the federal GST applies at 40% to direct skips above the allocated GST exemption.
  • No community property. Oregon is a common-law state, so no halving of community assets and no double basis step-up.
  • Elective share. A surviving spouse may elect 25% of the augmented estate under ORS 114.605 (VERIFY); modeled here on the net estate.
  • Small estates. The small-estate affidavit under ORS 114.515 and 114.525 is available where personal property is $300,000 or less and real property is $200,000 or less; verify the current figures.
  • Binding factor names what controls the result: the Oregon $1,000,000 exemption, the federal exclusion, the federal unified schedule, or the GST.
  • Gifting mode uses the guarded bisection solver (60 expansions, 90 iterations, rounded up). Because the Oregon exemption is only $1,000,000, eliminating all tax usually requires many decades of annual-exclusion gifting — the calculator reports this honestly.
  • Gifting is not free. Carryover basis loses the step-up; the deferred gain is netted against the tax saved.

Sources

  • ORS Ch. 118 and Form OR-706 (Oregon estate tax: $1,000,000 static exemption applied as a credit; graduated 10% to 16% schedule; return due 12 months after death; no portability) — bracket table VERIFY against ORS 118.020; Oregon Department of Revenue guidance.
  • ORS 114.605 (spousal elective share of 25% of the augmented estate; VERIFY); ORS 114.515 and 114.525 (small-estate affidavit: personal property $300,000 or less and real property $200,000 or less; VERIFY); Oregon probate venue in the Circuit Court of the county of domicile (36 counties).
  • IRC chapter 11 unified schedule and exclusion ($13,610,000 / $13,990,000 / $15,000,000 for 2024 / 2025 / 2026); IRC 2010 portability; IRC 2042 life insurance inclusion; IRC 2055 charitable deduction; IRC chapter 13 GST at 40%; IRC 1014 step-up and 1015 carryover basis.
  • IRS Form 706 and Form 4768 instructions (9-month deadline, 6-month filing extension).

Test cases

TC1 – Below OR and federal exemptions. Multnomah (Portland), 2025, single. Real 400,000; financial 300,000; retirement 200,000; debts 50,000; funeral 12,000; atty 2%; court 400.
Gross 900,000; admin 17,400; deductions 79,400; net estate 820,600; TE 820,600 at or below 1,000,000 OR and 13,990,000 federal. Federal $0, Oregon $0, TOTAL $0. OR headroom 179,400; federal headroom 13,169,400; ceiling 1,079,400. Affidavit NOT available (personal property 500,000).
TC2 – Above OR exemption, below federal. Washington (Hillsboro), 2025, single. Real 1,500,000; financial 1,000,000; retirement 500,000; debts 200,000; funeral 15,000; atty 2%; court 400.
Gross 3,000,000; admin 56,400; deductions 271,400; net estate 2,728,600; TE 2,728,600. OR schedule 312,004 less credit 100,000 = OREGON 212,004. Federal $0. TOTAL 212,004. Effective 7.07%.
TC3 – Above both, marital + DSUE. Multnomah, 2025, married 20 years, citizen spouse, bequest 6,000,000, DSUE 2,000,000. Real 12,000,000; financial 6,000,000; life 3,000,000; debts 400,000; funeral 25,000; atty 2%; court 400.
Gross 21,000,000; admin 412,400; deductions 837,400; net estate 20,162,600; less marital 6,000,000 = TE 14,162,600. OR schedule 2,131,016 less credit 100,000 = OREGON 2,031,016. Federal exclusion 15,990,000 so Federal $0. TOTAL 2,031,016. Effective 9.67%. Elective share 25% = 5,040,650.
TC4 – Gifting solver, 2026, maxYears 200. Clackamas (Oregon City), single. Real 4,000,000; financial 3,000,000; retirement 2,000,000; business 1,000,000; debts 300,000; funeral 15,000; atty 2%; court 400; 4 donees at 19,000.
Gross 10,000,000; admin 194,400; deductions 509,400; net estate 9,490,600; TE 9,490,600. Federal $0 (below 15,000,000); OR schedule 1,383,496 less credit 100,000 = 1,283,496; TOTAL 1,283,496. Solver must reach the LOWER OR exemption 1,000,000: 76,000/yr requires 112 YEARS (removes 8,512,000 leaving TE 978,600), tax $0. Saved 1,283,496.
TC5 – Small estate, affidavit eligible. Deschutes (Bend), 2025, married 5 years, citizen spouse. Real 150,000; financial 100,000; retirement 40,000; debts 10,000; funeral 5,000; atty 2%; court 300.
Gross 290,000; admin 5,900; deductions 20,900; net estate 269,100; TE 269,100 at or below both exemptions. Federal $0, Oregon $0, TOTAL $0. Affidavit available (personal 140,000 at or below 300,000 AND real 150,000 at or below 200,000). Elective share 25% = 67,275.

Estimates only. Not legal, tax or financial advice. The Oregon rate table, elective share and small-estate figures are flagged for verification against ORS 118.020, 114.605 and 114.515/114.525. Verify all figures with the Oregon Department of Revenue and federal rules before relying on them.

What Is an Oregon Estate Tax Calculator?

An Oregon estate tax calculator estimates the transfer taxes produced by a given estate profile. This calculator builds a gross estate from five asset categories, subtracts modeled deductions, applies marital and charitable deductions when allowed by its rules, adds prior taxable gifts to the tax bases, and then applies its Oregon and federal schedules.

The Oregon estate tax calculator estimates federal estate tax, Oregon estate tax, federal generation-skipping transfer tax (GST), and the combined transfer tax for the estate values you enter. It starts with assets, subtracts modeled debts and expenses, applies eligible deductions, adds prior taxable gifts to the tax bases, and uses the code’s 2024–2026 exclusions and tax schedules.

The calculator has three modes: calculating tax on the entered estate, testing whether a larger estate profile would produce tax, and solving for the number of years of annual-exclusion gifting needed to make the calculated total transfer tax reach zero. Oregon county selection is used for the displayed Circuit Court venue; the tax computation itself is statewide.

How the Oregon Estate Tax Calculation Works

The calculation begins by adding the entered real property, financial accounts, retirement accounts and annuities, includible life insurance, and business or other property.

G=R+F+T+L+BG=R+F+T+L+B

Here, G is gross estate, R is real property, F is bank, brokerage, and cash accounts, T is retirement accounts and annuities, L is life insurance entered in the calculator, and B is business interests, personal property, and other assets.

The administration-cost calculation deserves special attention. Although the input label describes the attorney and personal representative fee as a percentage of the net estate, the supplied code actually applies that percentage to gross estate minus debts, with a floor of zero, and then adds Circuit Court and other entered costs.

A=max⁡(G−D,0)×p100+CA=\max(G-D,0)\times\frac{p}{100}+C

The calculator then computes the net estate after debts, funeral expenses, administration costs, and casualty or theft losses.

N=max⁡(G−D−Fu−A−Ls,0)N=\max(G-D-F_u-A-L_s,0)

Next, eligible marital and charitable deductions are subtracted. A spousal bequest receives the calculator’s marital deduction only when the decedent is marked married and the surviving spouse is a U.S. citizen or the non-citizen spouse’s bequest is marked as passing to a QDOT. The charitable deduction cannot exceed the amount remaining after the marital deduction.

In gifting calculations, the estate reduction per donee is capped at the annual-exclusion amount encoded for the selected year: $18,000 for 2024 and $19,000 for 2025 or 2026. An entered gift above that amount does not increase the modeled annual estate reduction.

Gr=min⁡(g,e)×n×yG_r=\min(g,e)\times n\times y

Here, Gr is the gifting reduction, g is the entered annual gift per donee, e is the encoded annual exclusion, n is the number of donees, and y is the number of gifting years.

After deductions and modeled gifting, earlier taxable gifts are added to both the federal and Oregon tax bases. The calculator applies progressive schedules through schedule functions. Oregon tax is the Oregon schedule tax on the Oregon base minus the schedule tax on the calculator’s $1,000,000 Oregon exemption.

TOR=max⁡(SOR(BOR)−SOR(1,000,000),0)T_{OR}=\max\left(S_{OR}(B_{OR})-S_{OR}(1{,}000{,}000),0\right)

The encoded Oregon schedule applies 10% through $1,000,000, then 11%, 12%, 13%, 14%, and 15% to successive $500,000 bands through $3.5 million, followed by 16% above $3.5 million. Because the schedule tax on $1,000,000 is $100,000, that amount functions as the Oregon credit. The calculator itself flags this bracket table for verification.

For federal tax, the calculator uses a federal basic exclusion of $13,610,000 for 2024, $13,990,000 for 2025, and $15,000,000 for 2026. Entered DSUE is added to that exclusion. Federal estate tax is calculated as the schedule tax on the federal base minus the schedule tax on the applicable exclusion, but only when the federal base exceeds that exclusion.

TF=max⁡(SF(BF)−SF(EF),0)T_F=\max\left(S_F(B_F)-S_F(E_F),0\right)

GST is calculated separately from direct skips. The calculator subtracts the user-entered GST exemption allocation, floors the taxable amount at zero, and applies 40%.

TGST=0.40×max⁡(Direct Skips−GST Exemption,0)T_{GST}=0.40\times\max(\text{Direct Skips}-\text{GST Exemption},0)
TTotal=TF+TOR+TGSTT_{Total}=T_F+T_{OR}+T_{GST}

Worked Example

Suppose a 2025 estate contains $1,500,000 of real property, $1,000,000 of financial assets, and $500,000 of retirement assets. Enter $200,000 of debts, $15,000 of funeral expenses, a 2% attorney and personal representative fee, and $400 of court costs.

The gross estate is $3,000,000. Administration costs are ($3,000,000 − $200,000) × 2% + $400 = $56,400. Total deductions are $271,400, leaving a net and taxable estate of $2,728,600 when there are no other deductions or gifts. The Oregon schedule produces $312,004. Subtracting the $100,000 Oregon credit gives $212,004 of Oregon estate tax. The calculator produces $0 federal estate tax for this example, so total transfer tax is $212,004, or 7.07% of the gross estate.

How to Use the Oregon Estate Tax Calculator

  1. Choose whether you want to calculate tax on the estate, test a larger estate, or solve for years of gifting.
  2. Select the year of death from 2024, 2025, or 2026 and choose the Oregon county of domicile.
  3. Enter the date-of-death values for real property, financial accounts, retirement assets, life insurance, and business or other property.
  4. Enter debts, funeral expenses, the administration-fee percentage, court costs, and any casualty or theft losses.
  5. Enter marital and charitable bequests. If applicable, identify whether there is a surviving spouse, whether the spouse is a U.S. citizen, and whether a non-citizen spouse’s bequest passes to a QDOT.
  6. Enter earlier taxable gifts, federal DSUE, direct skips, and the GST exemption allocation. The GST exemption field defaults to $0; the program does not automatically copy the federal basic exclusion into it.
  7. For gifting analysis, enter the donee count, annual gift per donee, and maximum number of years to test. Review the acknowledgment and select Calculate.

The main estate-tax result is total transfer tax, combining federal estate tax, Oregon estate tax, and any calculated GST. Currency outputs are rounded to the nearest whole dollar. The effective transfer-tax rate is shown to two decimal places.

Understanding the Inputs, Results, and Assumptions

Oregon and Federal Headroom

The calculator reports remaining federal and Oregon headroom after adding prior taxable gifts to the relevant bases. It also calculates a tax-free ceiling by adding the smaller remaining headroom amount to the gross estate. This ceiling assumes the rest of the entered estate profile remains unchanged.

Marital Deduction and Elective-Share Display

The calculator models an Oregon spousal elective share when the decedent is marked married. It displays 25% of the calculated net estate as a proxy for the augmented estate. The code explicitly marks the elective-share rule for verification, so this output should not be treated as a legal determination of a surviving spouse’s actual entitlement.

Small-Estate Test

The small-estate indicator compares real property with a $200,000 limit and combines financial accounts, retirement assets, life insurance, and business or other property as personal property for comparison with a $300,000 limit. Both tests must pass. The calculator does not subtract debts before this comparison, and its own documentation flags these figures for verification.

Gifting Solver

In gifting mode, the calculator searches for the first whole number of years that makes total calculated transfer tax zero, up to the entered maximum. The maximum-years field accepts values from 1 through 200. The donee field is marked as required in gifting mode, but the implemented numeric validation allows a value of 0 through 200. With zero donees, annual gifting cannot reduce the estate.

The interface also asks for unrealized gain in gifted assets, the heirs’ selected long-term capital-gains rate, and whether 3.8% net investment income tax applies. In the supplied revision, however, the unrealized-gain amount is not carried into the result object used to render the deferred-capital-gain and net-benefit figures. Those two displayed figures therefore resolve to $0 rather than reflecting the entered gain. They should not be relied on in this revision.

Displayed Marginal Rate

The displayed “marginal rate on the next dollar” is simplified in the implementation. It shows 16% whenever the Oregon base exceeds $1,000,000, 40% when only the federal base is above its exclusion, and 56% when both conditions apply. It does not dynamically report the lower Oregon bracket percentages for bases between $1 million and $3.5 million.

Most money inputs accept values from $0 through $100,000,000. The administration-fee percentage accepts 0% through 25%. The calculation also requires a death year, Oregon county, long-term capital-gains selection, and acknowledgment checkbox. These results are estimates based on the rules encoded in this calculator, and real filing requirements or tax results may differ.

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Frequently Asked Questions

What Oregon estate tax exemption does the calculator use?

The calculator uses a static $1,000,000 Oregon exemption for every available death year. It implements the exemption as a credit equal to the Oregon schedule tax on $1,000,000, which is $100,000 under the encoded schedule. Oregon tax cannot fall below zero.

Does the calculator include federal estate tax?

Yes. The calculator includes a federal estate-tax computation using its encoded unified schedule and federal basic exclusions of $13,610,000 for 2024, $13,990,000 for 2025, and $15,000,000 for 2026. Entered federal DSUE is added to the basic exclusion before the federal tax is calculated.

Does Oregon DSUE portability increase the Oregon exemption?

No. In this calculator, DSUE applies only to the federal exclusion. The Oregon exemption remains $1,000,000 regardless of the DSUE amount entered. The results explicitly display Oregon portability as “Not allowed.”

How are prior taxable gifts treated?

The calculator adds the full amount entered as earlier taxable gifts to both its federal and Oregon tax bases. It does this after calculating the estate remaining after deductions and any modeled annual-exclusion gifting. The prior-gift input does not itself reduce the current gross estate.

How does the calculator estimate annual gifting?

It multiplies the smaller of the entered gift per donee or the encoded annual exclusion by the number of donees and gifting years. The code uses $18,000 for 2024 and $19,000 for 2025 and 2026. An amount entered above the annual exclusion is not automatically added to the prior-taxable-gifts field.

What does the effective tax rate mean?

The effective rate is total calculated transfer tax divided by gross estate. It can therefore include federal estate tax, Oregon estate tax, and GST. The calculator displays this percentage to two decimal places and uses the gross estate before deductions as the denominator.

Does the calculator determine whether legal probate or tax filings are definitely required?

No. It produces filing indicators from its encoded thresholds. Federal Form 706 is flagged when the calculator’s federal base exceeds its applicable federal exclusion, and Oregon Form OR-706 is flagged when the Oregon base exceeds $1,000,000. The code also contains filing-deadline and small-estate rules, but several Oregon figures are expressly marked for verification.

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