Idaho (ID) · State tax: 5.695% · Property tax: 0.69% · Median home (ZHVI): $465,000
As of · Sources: Zillow ZHVI, Tax Foundation, Census ACS, Freddie Mac PMMS
Retirement planning in Idaho requires understanding how the state taxes retirement income. Idaho's 5.695% state income tax applies to most retirement withdrawals including 401(k) and traditional IRA distributions, directly reducing the spending power of your nest egg. Social Security taxation varies by state; check whether Idaho taxes Social Security benefits, as this affects your total retirement income strategy. With a cost of living index of 92.2, the amount you need saved for retirement differs significantly from the national average. A common rule is 25x annual expenses — in Idaho, that target is more achievable thanks to below-average living costs.
Social Security + 401(k) state treatment + estate exemption shape the retirement savings calculator in Idaho. Every row cites a primary public dataset. Numbers reflect the most recent vintage available; refresh cadence is documented in the methodology.
Your retirement projection in Idahohas two tax-aware legs: the accumulation side (contributions reduce today's AGI) and the withdrawal side (distributions are taxed when you pull them out). Idaho does NOT tax Social Security benefits, and 401(k) withdrawals ARE subject to state income tax in full[1].
This changes the math. A flat-tax state that spares Social Security means the 4% safe-withdrawal rule stretches further in real terms than the raw headline number suggests — the right portfolio target is FIRE_number = annual_expenses × 25, where annual_expenses already nets out state taxes. No state-level estate tax simplifies high-net-worth planning — only federal estate tax above the $13.99M exemption applies.
Calc-specific note: Rule of 25: FIRE number = annual expenses × 25. Expenses must be net of state taxes on withdrawals.
Worked example — Idaho
A Idaho household targeting $80,000/year in retirement spending needs a portfolio ≈ $2,000,000 (25× rule, 4% SWR). With 5.70% state tax on withdrawals, that target rises to ≈ $2,120,778 net.
Effectively flat 5.695% once income exceeds low threshold. Uses federal standard deduction.[2]
Same formula, different inputs. Each city name links to its own pSEO page where the calculator is pre-filled with local medians.
| City | Median home | Median rent | HUD FMR 2BR | Median income |
|---|---|---|---|---|
| Boise, ID | $488,570 | $1,794/mo | $1,650/mo | $82,694 |
| Meridian, ID | $465,000 | $1,550/mo | $1,425/mo | $82,500 |
| Nampa, ID | $380,000 | $1,300/mo | $1,200/mo | $62,200 |
Sources: Zillow ZHVI + ZORI[1], HUD FMR[2], Census ACS[3], Freddie Mac PMMS[4].
Moving one state over changes the retirement savings numbers. Compare median home value (Zillow ZHVI), top marginal income tax rate, effective property tax rate, and the BEA all-items Regional Price Parity across Idaho and its border states.
| State | Median home | Top inc tax | Prop tax rate | RPP (US=100) |
|---|---|---|---|---|
| Idaho (this page) | $465,000 | 5.70% | 0.69% | 92.2 |
| Montana equivalent | $460,000 | 5.90% | 0.83% | 91.0 |
| compare to Nevada | $430,000 | None | 0.56% | 97.9 |
| Oregon equivalent | $490,000 | 9.90% | 0.87% | 104.8 |
| Utah side-by-side | $505,000 | 4.55% | 0.58% | 95.7 |
Sources: Zillow ZHVI[1], state Departments of Revenue / Tax Foundation[2], Tax Foundation property taxes[3], BEA Regional Price Parities[4].
These calculators share inputs with the retirement savings formula, so pair them to pressure-test your answer from multiple angles.
| Metric | Idaho | National Avg | MT | NV | OR |
|---|---|---|---|---|---|
| Median Home Price | $465,000 | $420,000 | $475,000 | $465,000 | $535,000 |
| Property Tax Rate | 0.69% | 1.07% | 0.84% | 0.6% | 0.97% |
| State Income Tax | 5.695% | 4.6%* | 6.84% | None | 9.9% |
| Avg Insurance Cost | $870/yr | $1,544/yr | $1,320/yr | $1,560/yr | $1,440/yr |
| Cost of Living Index | 92.2 | 100 | 104 | 109 | 115 |
| Household Income — p25 | $43,600 | $41,401 | $45,609 | $42,000 | $45,569 |
| Household Income — p50 (median) | $81,700 | $83,592 | $82,000 | $80,000 | $89,511 |
| Household Income — p75 | $137,996 | $153,000 | $142,396 | $140,000 | $152,459 |
*Average of states that levy an income tax. 2026 estimates. Idaho's homeowner exemption reduces taxable property value by up to 50% (max $125K).[3] Income percentiles from DQYDJ/Census CPS 2024[4].
Track take-home pay: 5.695% state income tax plus federal + FICA reduces gross wages by roughly 31% in Idaho.
Anchor savings goals to the Idaho cost of living index (92.2). A national 20% savings rate needs adjustment up or down depending on local expense floors.
Use tax-advantaged accounts first: 401(k), HSA, IRA. Contributions to pre-tax accounts save 5.695% at the state level plus your federal marginal rate.
Every number on this page reads from the same CalcFi data repository used by the Live Data pages below — the figures stay consistent.
Home Prices by State
Zillow ZHVI across all 50 states
Property Tax by State
Effective rate × ZHVI = annual bill
Household Income by State
FRED real median + percentile bands
Cost of Living by State
BEA RPP all-items + housing
No-Income-Tax States
Full list + trade-offs
Current Interest Rates
Treasury curve + PMMS + FDIC
CalcFi pSEO pages combine three inputs: (1) the calculator formula itself, which runs client-side so no inputs leave your browser; (2) state-level financial constants from primary public datasets; and (3) national benchmarks for comparison. The Idaho page uses the property tax rate (0.69%), median home price ($465,000), and 5.695% state income tax from the sources listed below.
Refresh cadence:state tax brackets and minimum wage rates are reviewed annually after each state's legislative session. Property tax, median home price, insurance, and cost-of-living figures are reviewed annually against the primary sources. Income percentiles are refreshed when the Census CPS/IPUMS releases update (typically September). Page-level dateModified matches the last editorial review date, shown above.
Known limits: statewide averages mask large intra-state variance — county-level property tax and metro-level home prices differ significantly from the figures shown. For the most precise calculations, cross-check the output against your actual county assessor and the latest federal/state tax tables at filing time.
Use Retirement Savings Calculator for any city in Idaho.
Every number on this page cites a primary public dataset. Last reviewed (auto-bumped by the next ISR refresh after an ETL run).
CalcFi does not sell data. If you spot an error, email hello@calcfi.app with the URL and the correct figure.