Community Property Double Step-Up in Basis in Oregon

If you moved to Oregon from California, Washington, Nevada, or Idaho, the way you hold property could save — or cost — your family hundreds of thousands of dollars in capital gains taxes after a death. Oregon is a common-law property state, but it recognizes imported community property under the Uniform Disposition of Community Property Rights at Death Act. That recognition unlocks one of the most powerful tax advantages in estate law: the IRC 1014(b)(6) double step-up in basis.

Most executors and surviving spouses never learn about this until it's too late.

How the Double Step-Up Works

Under standard joint ownership rules in common-law states like Oregon, when one spouse dies, only the deceased spouse's half of jointly held property receives a step-up in basis to the current fair market value. The surviving spouse's half retains its original purchase price as the tax basis.

Community property operates differently. Under IRC 1014(b)(6), when one spouse dies, both halves of community property receive a full step-up to the date-of-death fair market value — the decedent's half and the surviving spouse's half.

The dollar impact is enormous. Consider a couple who purchased a home in California for $200,000. By the time they retire to Oregon, the home has appreciated to $1.2 million.

Standard joint tenancy result: Only the deceased spouse's $600,000 share steps up. The surviving spouse's basis in their half remains $100,000. If they sell the home immediately, they face capital gains on approximately $500,000 (after the $250,000 exclusion for a primary residence).

Community property result: Both halves step up to $600,000 each. The surviving spouse's new basis is $1.2 million. They can sell the home immediately and owe zero capital gains tax.

At current federal capital gains rates plus Oregon's income tax, that difference can exceed $100,000 in tax savings on a single property.

Oregon's Recognition of Imported Community Property

Oregon adopted the Uniform Disposition of Community Property Rights at Death Act, which preserves the community property character of assets acquired in a community property state. This applies to:

• Property acquired as community property in another state
• Property purchased with proceeds from community property
• Property traceable to community property origins

The critical word is "preserves." Oregon doesn't create community property — it has no community property system of its own. But it won't strip the classification from assets that were legitimately acquired as community property elsewhere.

This means couples who move from California, Washington, Nevada, Idaho, Arizona, New Mexico, Louisiana, Texas, or Wisconsin to Oregon can retain the double step-up advantage on their imported assets. The protection extends to both the original property and anything purchased with the proceeds.

Tenancy by the Entirety: The Oregon Default

When married couples buy property in Oregon, the default ownership form is tenancy by the entirety. This provides automatic right of survivorship — when one spouse dies, the surviving spouse automatically becomes sole owner without probate.

The tax disadvantage: tenancy by the entirety only qualifies for a single step-up on the deceased spouse's half. For property originally held as community property that was retitled upon moving to Oregon, converting to tenancy by the entirety can destroy the community property status and eliminate the double step-up.

This is one of the most expensive mistakes families make after relocating. A couple moves from California to Portland, buys a new home using proceeds from selling their California community property home, and takes title as tenants by the entirety — Oregon's default. They've just commingled community property funds with a common-law ownership structure, potentially wiping out the double step-up.

Preserving Community Property Status

Executors and CPAs need to conduct forensic tracing to identify and preserve community property status. Key preservation strategies:

Keep community property funds separate. If a couple sells a community property home and deposits the proceeds into a joint bank account that also contains Oregon-earned income, the tracing is destroyed. Community property proceeds should be deposited into a clearly identified account.

Document the chain of title. Maintain records showing that Oregon assets were purchased with community property proceeds. Bank statements, wire transfer records, and settlement statements create the paper trail needed to prove community property character.

Don't retitle without advice. Converting community property into joint tenancy or tenancy by the entirety can sever the community property classification. Before retitling any imported property, consult a CPA or estate planning attorney who understands both Oregon's common-law framework and community property principles.

Consider a community property trust. Some couples who move to Oregon establish a community property trust to formally preserve the classification of their imported assets. This provides clear documentation and removes ambiguity about the property's character.

What Executors Should Do

If the decedent moved to Oregon from a community property state at any point during the marriage, immediately investigate:

1. Were any current assets originally acquired as community property?
2. Were any current assets purchased with proceeds from community property?
3. Has the community property character been preserved or destroyed through commingling?

If community property status can be established, claiming the double step-up on the estate tax return and the beneficiaries' income tax returns can save the family substantial capital gains taxes. This analysis should happen early in estate administration — before any assets are sold.

The Oregon Final Tax & Estate Tax Guide includes the step-up in basis analysis framework and community property tracing worksheets that help executors capture this deduction before it's lost.

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