Updated July 25, 2026. Quick answer (2026): Idaho still taxes retirement withdrawals (top rate 5.695%), but levies no estate or inheritance tax. Four taxes decide what a move is actually worth — income tax on withdrawals, state estate tax, state inheritance tax, and what probate costs your heirs. This page prices all four for Idaho and shows what each arriving state gains or gives up.
What Idaho charges a retiree in 2026
| Tax | Idaho position, 2026 |
|---|---|
| State income tax | flat 5.3% (cut from 5.695% by HB 40, 2025) |
| Social Security | not taxed (subtracted in full) |
| Pension / 401(k) / IRA | Pensions, 401(k), and IRA distributions generally fully taxable. |
| Estate tax | none |
| Inheritance tax | none |
| Probate fee model | reasonable-fee |
| Probate filing fee | varies by county |
| Small-estate limit | $100,000 (net of liens/encumbrances) — collection of personal property by affidavit, Idaho Code §15-3-1201; personal property only, 30-day wait. Summary administration also available where spouse is sole beneficiary (§15-3-1205). |
What you gain by arriving, depending on where you leave
The saving is not a property of Idaho — it is a property of the pair. From some states the income-tax gain is the whole story; from others it is exactly zero and the real money is a death tax you leave behind.
- Moving from California — the top rate falls; the death taxes matter more
- Moving from Washington — you would START paying state income tax here
Getting the sequence right
Arriving in Idaho is the easy half. The order you do things in — when you establish domicile, when you convert, when you retitle or sell property back home — changes the total, and some of it is irreversible. See finding an advisor for a cross-state move.
What a move to Idaho does not fix
- Domicile is a test, not an address. Your departing state can audit the move. Days present, licence, registrations and where your advisers sit all count.
- Property left behind stays reachable by the old state’s estate rules.
- Probate still applies. No estate tax is not the same as no probate; Idaho uses a reasonable-fee fee model.
- Roth conversions are taxed where you are domiciled that year — see how all 51 jurisdictions tax Roth conversions.
Full detail: Idaho retirement taxes. Compare any pair with the retirement tax comparison tool, or browse all corridors at the relocation hub.
Getting the order right
Move timing, conversion sequencing and estate exposure interact. Know what advice should cost before you buy it — see our advisor cost guide.
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Cite or share this guide
Suggested citation: Clear Money Guide, “Retiring to Idaho: the 2026 Tax Position,” statute-cited; clearmoneyguide.com/retiring-to-idaho-taxes/. Free to cite with attribution. Download the full dataset as CSV, or contact contact@clearmoneyguide.com for custom cuts.
Primary sources
- Idaho Code § 63-3022A
- Idaho State Tax Commission: Idaho Retirement Benefits Deduction
- Form 39R Part B
- Idaho Code §15-3-719
- Idaho Code §15-3-1201