Oregon to Idaho Retirement Taxes (2026): Every Tax That Changes

Updated July 26, 2026. Quick answer (2026): Moving from Oregon to Idaho in retirement, the top rate on withdrawals falls from 9.9% to 5.695%, and you leave a Oregon death tax behind. Four separate taxes change when you move — state income tax on withdrawals, state estate tax, state inheritance tax, and what probate costs your heirs. Most comparisons only price the first one.

Oregon vs Idaho: every tax that changes

Every cell is quoted from our statute-cited 51-jurisdiction dataset. Download the full dataset as CSV.

1. What changes on your annual tax bill

Both states tax retirement withdrawals, so this is a rate change rather than an exemption. Oregon runs graduated, 4.75% to 9.9% top rate against Idaho at flat 5.3% (cut from 5.695% by HB 40, 2025) — a top-rate difference of roughly 4.21 percentage points. On $100,000 of withdrawals that is on the order of $4,205 a year at the top of the schedule, before any exclusion either state allows.

Oregon: Pensions, 401(k) and IRA withdrawals generally fully taxable. Idaho: Pensions, 401(k), and IRA distributions generally fully taxable.

2. What changes at death: state estate tax

This is usually the larger number. Oregon levies an estate tax — yes – $1,000,000 filing threshold/exemption (lowest in the nation; fixed, not indexed); rates 10%-16% on the amount above $1M; no spousal portability; natural resource (farm/forestry/fishing) credit available under ORS 118.140 — and Idaho levies none (none). Establishing domicile in Idaho removes that exposure for assets that are not Oregon real property.

3. What changes at death: state inheritance tax

Neither state levies an inheritance tax. Oregon: none Idaho: none

4. The one nobody prices: what probate costs your heirs

Oregon uses a hybrid fee model (Personal representative compensation is statutory (ORS 116.173): 7% of first $1,000; 4% of $1,000-$10,000; 3% of $10,000-$50,000; 2% above $50,000; plus 1% of certain non-probate property (excluding life insurance). Attorney fees are reasonable (ORS 116.183). Verified.); Idaho uses a reasonable-fee model (UPC state: reasonable compensation (Idaho Code §15-3-719); no percentage schedule.). Filing fees — Oregon: Statutory sliding scale (ORS 21.170, per 2025 OJD Circuit Court fee schedule): $278 (<$50k); $591 ($50k-<$1M); $882 ($1M-<$10M); $1,176 ($10M+). Verified. Idaho: varies by county

Full detail: probate cost by state and small-estate limits by state.

Does this actually apply to you?

Below $1,000,000 no US state estate tax applies anywhere — Oregon has the lowest threshold in the country and that is where it starts. So for most estates the whole “escape the death tax” framing is irrelevant, and the only thing that changes when you move is your annual income tax. Here is exactly where the line falls for this pair:

Thresholds are the 2026 figures in our verified dataset and apply to the taxable estate. Federal estate tax is separate and far higher. Test your own number with the comparison tool.

Probate cost in each state, specifically

Oregon uses a hybrid standard — a statutory bound with reasonableness inside it, and its small-estate route can reach real property under a statutory cap. Idaho uses a “reasonable fee” standard with no schedule, and its small-estate route does not clear a solely owned house. The two states differ on that question, which is exactly the kind of thing a move changes. Full figures with the governing statute, the court filing fee and the small-estate threshold: Oregon probate cost and Idaho probate cost.

Four taxes, two states, one order of operations

Everything above changes together: what Oregon stops taking on withdrawals, what Idaho does not take at death, and what probate costs in each. The order you do things in — when you establish domicile, when you convert, when you retitle property — changes the total, and some of it cannot be undone afterwards. If a move is genuinely on the table, here is what to look for in an advisor who knows both Oregon and Idaho. If you would rather price it yourself first, the two-state comparison tool is free and asks for no email.

Will Oregon still tax me after I move to Idaho?

Not on your retirement withdrawals, once you genuinely change domicile — but that is a harder test than a change of address, and what you leave behind stays in reach.

• Domicile is a test, not a mailing address. A departing state can and does audit residency. Days present, voter registration, driver’s licence, where your doctors and advisers are, and where you keep what you value all count.
• Real property left behind stays taxable. Keeping a home in Oregon can keep part of the estate within reach of Oregon rules even after you become an Idaho resident.
• A Roth conversion is taxed where you live in the year you convert. Sequencing a conversion after establishing the new domicile is often worth more than the annual saving — see how all 51 jurisdictions tax Roth conversions.

If you keep a home in Oregon, what happens at death?

Changing domicile moves you. It does not move the house. Oregon levies an estate tax, and it reaches a nonresident decedent’s real property situated there — so a home kept behind after the move stays within Oregon’s reach even once Idaho is your legal home for every other purpose. For a nonresident decedent, taxable Oregon property is all real property and tangible personal property located in Oregon.

Oregon computes tax on the entire taxable estate wherever located, then multiplies by the Oregon fraction. The filing threshold is $1,000,000, the lowest in the nation. The practical consequence is the part most summaries skip: the lowest threshold in the country combined with a fractional formula, which is why an Oregon second home catches ordinary estates. Authority: Form OR-706 instructions (fractional formula).

This is the exposure that survives a move, and it is the one worth pricing before the move rather than after. The house also stays within that state’s probate jurisdiction, so the estate faces a separate ancillary proceeding there on top of the probate where you live — the ancillary probate calculator prices that second proceeding. Confirm the current figures with the state revenue department or a licensed professional before acting — thresholds move, and the arithmetic depends on the whole estate, not just the house.

Full state detail

Every figure above is summarized. The complete statute-cited breakdown for each state: Oregon retirement taxes and Idaho retirement taxes. To compare any other pair, start at the retirement tax relocation hub.

Widen the comparison

This page prices one corridor. To see every destination Oregon retirees consider and every origin state moving to Idaho, start there instead. For any pair not covered, the retirement tax comparison tool runs all 51 jurisdictions, and the probate cost calculator works out what settling the estate costs in each.

Talking this through

Relocation timing, Roth conversion sequencing and estate exposure interact, and the order you do them in changes the total. If you want a second opinion, understand what it should cost first — see our advisor cost guide.

Disclosure: the button above routes to an advertising partner and Clear Money Guide may earn a referral fee. See our Affiliate Disclosure.

Primary sources

• ORS 316.054 (Social Security)
• ORS 316.157 (retirement income credit sunset)
• ORS 316.680 federal pension subtraction
• OAR 150-316-0225
• Publication OR-PIT-VET
• ORS 118.010
• ORS 118.160
• ORS 118.140
• Idaho Code § 63-3022A
• Idaho State Tax Commission: Idaho Retirement Benefits Deduction
• Form 39R Part B
• ORS 116.173
• ORS 116.183
• ORS 114.510
• ORS 21.170
• Idaho Code §15-3-719
• Idaho Code §15-3-1201

Methodology: every figure is quoted from Clear Money Guide’s statute-cited 51-jurisdiction datasets, compiled from state statutes, session laws and revenue-department publications and adversarially verified in July 2026. Nothing here is personalized tax or legal advice. Confirm your own facts with a qualified adviser before you move.