California
#23
retiree-friendly rank
- Social Security
- SS exempt from state tax
- Retirement income
- Retirement income taxed
- Death tax
- None
Prop 0.7% · Sales 9.03%
2026California vs Idaho Retirement Taxes
California and Idaho tie on this site's modeled retiree-friendliness score. Compare Social Security, pensions and IRA withdrawals, estate/inheritance taxes, and supporting property and sales rates.
By Sammy S. · Founder · AuthorUpdated for 2026
More retiree-friendly on this model
California and Idaho are tied
Both states share the same modeled Social Security, retirement-income, and estate/inheritance score.
Side-by-side retirement tax scoreboard
Idaho
#23
retiree-friendly rank
- Social Security
- SS exempt from state tax
- Retirement income
- Retirement income taxed
- Death tax
- None
Prop 0.5% · Sales 6.03%
Retirement tax metric comparison
Rankings emphasize income and death taxes. Property and sales rates matter for cash flow but do not drive the retiree-friendliness score.
| Metric | California | Idaho |
|---|---|---|
| Retiree-friendly rank | #23 | #23 |
| Social Security | SS exempt from state tax | SS exempt from state tax |
| Retirement income | Retirement income taxed | Retirement income taxed |
| Estate / inheritance | None | None |
| Estate exemption | — | — |
| Estate top rate | — | — |
| Effective property tax | 0.7% | 0.5% |
| Combined sales tax | 9.03% | 6.03% |
State rules explained
Why California and Idaho differ for retirees
The gap is rarely one rule. Social Security thresholds, pension exclusions, and estate taxes can each flip which state looks better for a given household.
California rules
Exempts Social Security but fully taxes most other retirement income at high progressive rates.
California does not tax Social Security benefits at the state level. Federal tax rules still apply.
Social Security exempt. Pensions, IRA, and 401(k) withdrawals taxed as ordinary income (top rate 13.3% plus MHSA surcharge over $1M).
- Property
- 0.7%
- Sales
- 9.03%
Idaho rules
Exempts Social Security; taxes most other retirement distributions.
Idaho does not tax Social Security benefits at the state level. Federal tax rules still apply.
Social Security exempt. Other retirement income generally taxed.
- Property
- 0.5%
- Sales
- 6.03%
Income mix matters
A household living mostly on Social Security may prefer different rules than one drawing large IRA RMDs. Compare California and Idaho against your actual income mix.
Death taxes are separate
Federal estate tax can still apply above about $15M. State estate or inheritance tax is an extra layer in some states.
Property & sales still count
California property 0.7% vs Idaho 0.5%; sales 9.03% vs 6.03%.
Compare a different pair
Compare any two states
Social Security, pensions/IRA, estate taxes, and supporting property/sales rates.
Related tools
Estimate federal retirement figures
Use Social Security and RMD tools, then apply each state's rules from this comparison.
California vs Idaho retirement tax FAQs
California and Idaho tie on the modeled retiree-friendliness score. Also compare property tax (0.7% vs 0.5%) and combined sales tax (9.03% vs 6.03%).
California: ss exempt from state tax. Idaho: ss exempt from state tax. Federal Social Security tax rules apply in both states.
California: retirement income taxed. Idaho: retirement income taxed.
California: no estate tax. Idaho: no estate tax.
Not always. Property taxes, sales taxes, and estate taxes can offset income-tax savings. Compare total household exposure, not income tax alone.
Federal income tax, Medicare IRMAA surcharges, and the federal estate tax framework do not depend on the state of residence in the same way state income tax does. State rules sit on top of federal rules.
Related retirement tax comparisons
Educational comparison only. Confirm current state return instructions and estate planning rules before relocating.