Last updated: 2025 BLS data · Page refreshed:
How much does a Civil Engineers actually take home in Idaho?
5.8% flat rate — 27.1% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Civil Engineers earning $98,030 in Idaho (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $98,030 | — |
| Federal Income Tax | -$13,407 | 13.7% |
| Idaho State Income Tax | -$5,685 | 5.8% |
| Social Security (OASDI) | -$6,077 | 6.2% |
| Medicare | -$1,421 | 1.5% |
| Total Taxes | -$26,592 | 27.1% |
| Take-Home Pay | $71,437 | 72.9% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Civil Engineers in Idaho.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $67,250 | -$15,681 | $51,568 | 23.3% |
| 25th Percentile (P25) | $78,990 | -$19,842 | $59,147 | 25.1% |
| Median (P50) | $98,030 | -$26,592 | $71,437 | 27.1% |
| 75th Percentile (P75) | $113,160 | -$31,956 | $81,203 | 28.2% |
| 90th Percentile (P90) | $141,020 | -$42,350 | $98,669 | 30.0% |
After federal income tax ($13,407), state tax ($5,685), and FICA ($7,499), a Civil Engineers in Idaho takes home $71,437 per year — or $5,953 per month. The effective tax rate of 27.1% is moderate compared to the national range.
A Civil Engineers in Idaho loses 27.1% of gross pay to taxes — higher than the ~25% national midpoint. Of the $98,030 gross, $71,437 lands in the paycheck after federal ($13,408), state ($5,686), and FICA ($7,499) withholding.
Idaho applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Civil Engineers salary that contributes $5,686 to the 5.8% effective state-tax burden.
Federal tax on this Civil Engineers salary is $13,408 (50%), but combined state ($5,686, 21%) + FICA ($7,499, 28%) make up the other 50% of the bill.
Moving this same Civil Engineers salary to a zero-state-tax state would yield around $77,123 net — a gain of $5,686 (8.0%) per year versus Idaho.
Idaho ranks #38 of 51 states for Civil Engineers after-tax pay — lower half of the national distribution. Either gross wages trail the national median, state tax is elevated, or both.
Translated into paycheck cadences, $71,437 net/year works out to $5,953/month or $2,748/bi-weekly for this Civil Engineers in Idaho — the numbers that actually hit a checking account after every deduction.
Where does a Civil Engineers keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Idaho ranks #38 out of 51 states for Civil Engineers after-tax take-home pay.
A Civil Engineers in Idaho earning a median salary of $98,030 will take home approximately $71,437 per year after federal income tax ($13,407), state income tax ($5,685), and FICA ($7,499). That is $5,953 per month or $2,747 per bi-weekly paycheck.
The effective total tax rate for a Civil Engineers in Idaho is 27.1%, broken down as: federal income tax 13.7%, Idaho state tax 5.8%, and FICA (Social Security + Medicare) 7.7%. This assumes a single filer with the standard deduction for 2024.
Idaho has a 5.8% flat rate. On a Civil Engineers's median salary of $98,030, the state income tax amounts to $5,685 per year, which is an effective state rate of 5.8%.
After all taxes, a Civil Engineers in Idaho takes home approximately $5,953 per month, or about $34.34 per hour (based on a standard 2,080-hour work year). These figures assume a single filer, standard deduction, and no additional pre-tax deductions.
We start with the 2025 BLS median salary of $98,030 for Civil Engineers in Idaho, then subtract: federal income tax using 2024 IRS brackets ($14,600 standard deduction), Idaho state income tax (5.8% flat rate), Social Security (6.2% up to $168,600), and Medicare (1.45%). The result — $71,437/yr — does not include local taxes, pre-tax deductions (401k, HSA), or tax credits.
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This estimate assumes a single filer using the 2024 standard deduction ($14,600), with W-2 employment income only. It does not account for: itemized deductions, tax credits (e.g. earned income credit, child tax credit), local/city taxes, pre-tax contributions (401k, HSA, FSA), self-employment tax, or additional income sources. Actual take-home pay may differ. Consult a tax professional for personalized advice.
Our Methodology · Data Sources · Salary: BLS OEWS · Tax: IRS + State DOR