Salary Guide · Idaho · 2026

Is $42,000 a Good Salary in Idaho?

Single filer · 2026 IRS brackets · Idaho state tax included

Financial pressure· Lifestyle Score 3.7/10

Rent alone would take 50% of take-home income. This salary creates significant financial pressure in this city — a $56,000 annual income or lower rent is needed to reach affordability.

Annual take-home

$33,417

20.44% effective tax

Monthly take-home

$2,785

after all taxes

Monthly surplus

$340

after expenses

Min. comfortable

$53,000

for Boise

Last updated: March 2026 · Data updated monthly using government datasets.

$42,000 After Tax in Idaho

Gross salary$42,000

Federal income tax(7.0%)− $2,934

Idaho state tax(5.8%)− $2,436

Social Security(6.2%)− $2,604

Medicare(1.45%)− $609

Annual take-home$33,417

$2,785Monthly

$1,285Bi-weekly

20.44%Effective rate

Monthly Living Costs in Boise

Based on HUD Fair Market Rents, USDA food cost plans, and BLS consumer expenditure data.

Rent (1BR)$1,400 (57%)

Food$462 (19%)

Transportation$189 (8%)

Utilities$178 (7%)

Healthcare (est.)$216 (9%)

Total monthly expenses$2,445

Monthly surplus$340

Financial Intelligence

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Housing Affordability

At 50.3% of take-home income, housing costs in Boise are unaffordable on this salary. A $50,910 annual salary is needed to make rent manageable.

💰

Savings Potential

This salary could allow saving approximately $340/month (12% of take-home), or $4,080/year. That's reasonable, though slightly below the 20% benchmark.

🗺️

Purchasing Power

Boise is near the national cost-of-living average (index: 1.08). $42,000 here is roughly equivalent to $71,944 in San Francisco or $34,222 in an affordable city like Birmingham.

📊

Tax Burden

Total taxes are approximately 20.4% of gross income (federal 7.0%, state 5.8%, FICA 7.6%). This is typical for this income level in the US.

📈

Salary Benchmarking

$42,000 is slightly above the Idaho individual median of $40,800 (+3%). The state household median is $70,214.

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Living Comfort

A $42,000 salary supports a challenging single lifestyle in Boise, Idaho. After essential expenses, approximately $340/month (~12% of take-home) is available for savings or discretionary spending.

Idaho Income Benchmarks

Your salary

$42,000

gross annual

Idaho individual median

$40,800

You're +3%

Idaho household median

$70,214

You're -40%

Tax Savings Opportunities

Maximize 401(k) Contributions

Contributing the full $23,500 to your 401(k) reduces your taxable income dollar-for-dollar. If your employer offers a match, contribute at least enough to capture the full match — that's an immediate 50–100% return.

Up to $5,170 in federal tax (22% bracket)

Contribute to a Traditional IRA

Deductible Traditional IRA contributions (up to $7,000) lower your AGI if you're not covered by a workplace plan, or if you are, if your income falls within deduction phase-out limits. Deduction phases out for single filers with workplace plans between $79,000–$89,000 MAGI.

Up to $1,540 in federal tax (22% bracket)

Open a Roth IRA for Tax-Free Growth

Roth IRA contributions are after-tax but all qualified withdrawals in retirement are tax-free. Eligible for single filers with MAGI below $150,000 (full contribution) to $165,000 (phase-out). Best for those expecting a higher tax bracket in retirement.

Years of tax-free compound growth

Solo 401(k) or SEP-IRA for Self-Employed

Self-employed individuals can shelter up to 25% of net self-employment income in a SEP-IRA (max $70,000 in 2025), or combine employee + employer contributions in a Solo 401(k) for even higher limits.

Up to $26,100 in tax savings (37% bracket, max contribution)

$42k Salary in Idaho Cities

Boise →Meridian →Nampa →Idaho Falls →Pocatello →Caldwell →

Frequently Asked Questions