Idaho vs 
Alabama
Take-home pay after federal tax, state income tax, and FICA — calculated with the same engine as our paycheck calculator.
By Sammy S. · Founder · AuthorUpdated for 2026
Winner at $100k
Alabama
Extra take-home / year
$565
Per month
$47
Over 10 years
$5,650
Moving from Idaho → Alabama at $100,000
Metric vs metric
Lower tax and cost figures generally favor the highlighted cell. Rate structure notes sit under each state's calculator link.
| Metric | Idaho | Alabama |
|---|---|---|
| Income tax | 5.30% · Flat 5.30% | 5% · Progressive (top 5%) |
| Combined sales tax | ~6.03% | ~9.46% |
| Effective property tax | ~0.5% | ~0.37% |
| Cost of living index | 101.7 | 85 |
| Median household income | $70,800 | $61,200 |
| Unemployment rate | 3% | 3.2% |
Dig into each state's paycheck
Idaho rate structure
Flat 5.30% state income tax on taxable wages (before credits).
Alabama rate structure
Progressive brackets with a top marginal rate of about 5%.
Overview
Idaho (Flat 5.30%) vs Alabama (Progressive (top 5%)). At $100,000 gross (single), Alabama typically leaves you with about $565 more take-home than Idaho after federal, state, and FICA. Sales tax ~6.03% vs ~9.46%; property tax ~0.5% vs ~0.37%. Median household income (ACS 2024): $70,800 vs $61,200.
Take-home by income
Net pay after federal income tax, state income tax, and FICA — single filer, standard deduction, no dependents (2026). Advantage is take-home in Alabama minus Idaho.
| Gross | Idaho take-home | Alabama take-home | Advantage |
|---|---|---|---|
| $50,000 | $39,705 | $40,120 | +$415 |
| $75,000 | $57,618 | $58,108 | +$490 |
| $100,000Headline | $73,880 | $74,445 | +$565 |
| $150,000 | $105,841 | $106,556 | +$715 |
| $200,000 | $138,327 | $139,192 | +$865 |
| $500,000 | $313,977 | $315,742 | +$1,765 |
Assumptions: single filer, standard deduction, no dependents, tax year 2026. At $100k: FICA ≈ $7,650 in both states; effective total tax rate ≈ 26.1% in Idaho vs 25.6% in Alabama. Local city taxes are not included unless noted.
$100k tax breakdown: Idaho vs Alabama
Where a $100,000 paycheck goes after federal income tax, state income tax, and FICA (2026, single filer).
| Line item | Idaho | Alabama |
|---|---|---|
| Gross pay | $100,000 | $100,000 |
| Federal income tax (est.) | $13,170 | $13,170 |
| State income tax | $5,300 | $4,735 |
| FICA (SS + Medicare) | $7,650 | $7,650 |
| Take-home pay | $73,880 | $74,445 |
| Effective total tax rate | 26.1% | 25.6% |
| Monthly take-home | $6,157 | $6,204 |
Federal estimates can differ slightly between states when state interactions affect taxable income. Combined sales tax ~6.03% (Idaho) vs ~9.46% (Alabama); effective property tax ~0.5% vs ~0.37%.
Pros & cons: Idaho vs Alabama
Tax structure, living costs, and lifestyle trade-offs beyond the paycheck number.
Idaho
Pros
- Lower combined sales tax (~6.03% vs ~9.46% in Alabama)
- Higher median household income ($70,800 ACS 2024 vs $61,200)
- Modeled with our 2026 federal + state + FICA paycheck engine
Cons
- −State income tax (Flat 5.30%) reduces take-home vs a $0-income-tax peer
- −Roughly $565/year less take-home at $100k vs Alabama
- −Higher effective property tax (~0.5% vs ~0.37% in Alabama)
- −Higher cost of living index (101.7 vs 85; 100 = US average)
Alabama
Pros
- Lower top/marginal state rate (Progressive (top 5%)) than Idaho (Flat 5.30%)
- About $565/year more take-home at $100k gross (single) vs Idaho
- Lower effective property tax (~0.37% vs ~0.5% in Idaho)
- Lower cost of living index (85 vs 101.7; 100 = US average)
Cons
- −Higher combined sales tax (~9.46% vs ~6.03% in Idaho)
- −Lower median household income ($61,200 ACS 2024 vs $70,800)
- −Local city/county taxes and credits are not fully modeled in the headline ladder
Who wins when
Quick read on when each state is the better fit — beyond the headline tax number.
- Alabama wins on take-home pay at every salary band in our ladder (single filer, standard deduction).
- Idaho: Lower combined sales tax (~6.03% vs ~9.46% in Alabama)
- Idaho: Higher median household income ($70,800 ACS 2024 vs $61,200)
- Alabama: Lower top/marginal state rate (Progressive (top 5%)) than Idaho (Flat 5.30%)
- Alabama: About $565/year more take-home at $100k gross (single) vs Idaho
How we calculate Idaho vs Alabama
Tax engine. Federal income tax uses 2026 IRS brackets and the standard deduction for a single filer. FICA includes Social Security and Medicare employee shares. State income tax applies Idaho's and Alabama's rules as modeled in our US calculator (Flat 5.30% vs Progressive (top 5%)).
What's included. Wage income only — no capital gains, self-employment tax, itemized deductions, credits, or local city wage taxes (e.g. NYC) unless noted. Sales tax (~6.03% vs ~9.46%) and property tax (~0.5% vs ~0.37%) are context metrics, not subtracted from the take-home ladder.
Cost of living. COL indexes (101.7 vs 85, 100 = US average) and median household income ($70,800 vs $61,200) help interpret whether a paycheck win buys more in real life. For city-level equivalent salary, use the Idaho → Alabama relocation calculator.
Frequently asked questions
Common questions about Idaho vs Alabama taxes, take-home pay, and relocation.
Moving Idaho → Alabama?
Model cost-of-living equivalent salary, or open each state's paycheck calculator with your filing status and deductions.
Related tools
Estimates only for tax year 2026. Not tax advice — verify with your state tax agency or a CPA before relocating. Figures assume a single filer with the standard deduction and no dependents.