$18 an hour after tax in Idaho
$18 an hour in Idaho takes home $31,119 a year in 2026, or $1,197 biweekly.
- $31,119
- $2,593
- $1,197
- $598
| Per year | Per month | Biweekly | Per week | |
|---|---|---|---|---|
| Gross pay | $37,440 | $3,120 | $1,440 | $720 |
| Federal income tax | −$2,313 | −$193 | −$89 | −$44 |
| Social Security | −$2,321 | −$193 | −$89 | −$45 |
| Medicare | −$543 | −$45 | −$21 | −$10 |
| State income tax | −$1,144 | −$95 | −$44 | −$22 |
| Take-home pay | $31,119 | $2,593 | $1,197 | $598 |
Take-home per paycheck
$1,197
- Take-home per year
- $31,119
- Total taxes per year
- $6,321
- Effective tax rate
- 16.9%
- Marginal tax rate
- 24.9%
- Uses Idaho's revised 2026 tables (July 2026). The Idaho Child Tax Credit has ended, so Form ID W-4 allowances no longer reduce withholding.
Take-home per paycheck: $1,197 every 2 weeks
| Line | Every 2 weeks | Per year |
|---|---|---|
| Gross pay | $1,440 | $37,440 |
| Federal income tax | −$89 | −$2,313 |
| Social Security | −$89 | −$2,321 |
| Medicare | −$21 | −$543 |
| State income tax | −$44 | −$1,144 |
| Take-home pay | $1,197 | $31,119 |
- Take-home pay$31,11983%
- Federal income tax$2,3136%
- Social Security & Medicare$2,8648%
- State & local taxes$1,1443%
$18 an hour in nearby states
| State | State + local tax | Take-home / yr | vs. Idaho |
|---|---|---|---|
| Oregon | $2,762 | $29,501 | −$1,618 |
| Montana | $1,014 | $31,249 | +$130 |
| Washington | $519 | $31,744 | +$625 |
| Wyoming | $0 | $32,263 | +$1,144 |
| Nevada | $0 | $32,263 | +$1,144 |
Compare with another state
Take-home per paycheck by filing status
| Filing status | Weekly | Every 2 weeks | Twice a month | Monthly | Per year | Effective rate |
|---|---|---|---|---|---|---|
| Single | $598.44 | $1,196.89 | $1,297.29 | $2,594.59 | $31,119 | 16.9% |
| Married filing jointly | $649.84 | $1,298.69 | $1,406.83 | $2,814.65 | $33,766 | 9.8% |
| Head of household | $617.36 | $1,234.72 | $1,338.28 | $2,676.57 | $32,103 | 14.3% |
Questions people ask
How much is $18 an hour after taxes in Idaho?
$18 an hour in Idaho takes home $31,119 a year in 2026, or $1,197 biweekly. That is after $2,313 federal income tax, $2,864 Social Security and Medicare, and $1,144 Idaho tax, for a single filer with no pre-tax deductions: an effective rate of 16.9%.
What is $18 an hour biweekly after taxes in Idaho?
$1,196.89 per paycheck for a single filer paid every two weeks (26 paychecks), or $1,298.69 if married filing jointly. Gross pay is $1,440 per paycheck.
What is $18 an hour a year in Idaho?
At 2,080 hours a year (40 hours a week), $18 an hour is $37,440 a year before tax and $31,119 after 2026 taxes in Idaho: $14.96 for every hour paid.
What is the marginal tax rate on $18 an hour in Idaho?
24.9% on the next dollar for a single filer: 12% federal, 5.3% Idaho, plus Social Security and Medicare.
How does $18 an hour compare with the median wage in Idaho?
$37,440 a year is 22% below Idaho's median annual wage of $47,970 (BLS OEWS, May 2025).
Which nearby state keeps the most of $18 an hour?
Wyoming: $32,263 a year, $1,144 more than in Idaho.
Sources
- Table for Percentage Computation Method of Withholding (EPB00744, 07-23-2026) · retrieved 2026-10-16
- Withholding tables updated for 2026 (July 31, 2026) · retrieved 2026-10-16
- Computing Withholding · retrieved 2026-10-16
- Income You Must Withhold On · retrieved 2026-10-16
- 2025 Idaho Individual Income Tax Instructions (EIN00046) · retrieved 2026-10-16
- Commissioners' Quarterly Business Meeting minutes, April 28, 2026 (EPB00687) · retrieved 2026-10-16
- Rev. Proc. 2025-32 (2026 inflation adjustments) · retrieved 2026-10-16
- Publication 15-T (2026), Federal Income Tax Withholding Methods · retrieved 2026-10-16
- Publication 15 (2026), (Circular E), Employer's Tax Guide · retrieved 2026-10-16
- Form W-4 (2026), Employee's Withholding Certificate · retrieved 2026-10-16
- Publication 505 (2026), Tax Withholding and Estimated Tax · retrieved 2026-10-16
- Form 1040-ES (2026), Estimated Tax for Individuals · retrieved 2026-10-16
- Schedule 1-A (Form 1040) 2026, Additional Deductions (early-release draft) · retrieved 2026-10-16
- Schedule 8812 (Form 1040) 2026, Credits for Qualifying Children and Other Dependents (early-release draft) · retrieved 2026-10-16
- Working Families Tax Cuts: Individuals and workers (tips, overtime, seniors, car loan interest) · retrieved 2026-10-16
- Working Families Tax Cuts provisions (charitable deduction for non-itemizers, Section 70424) · retrieved 2026-10-16
- Child Tax Credit · retrieved 2026-10-16
- IR-2025-111: 401(k) limit increases to $24,500 for 2026 · retrieved 2026-10-16
- Rev. Proc. 2025-19: 2026 HSA limits · retrieved 2026-10-16
- BLS Occupational Employment and Wage Statistics (OEWS), May 2025, median annual wage by state · retrieved 2026-10-16
How every figure is checked: methodology.