Last updated: 2025 BLS data · Page refreshed:
How much does a Hydrologists actually take home in Idaho?
5.8% flat rate — 25.1% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Hydrologists earning $78,850 in Idaho (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $78,850 | — |
| Federal Income Tax | -$9,188 | 11.7% |
| Idaho State Income Tax | -$4,573 | 5.8% |
| Social Security (OASDI) | -$4,888 | 6.2% |
| Medicare | -$1,143 | 1.5% |
| Total Taxes | -$19,793 | 25.1% |
| Take-Home Pay | $59,056 | 74.9% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Hydrologists in Idaho.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $58,260 | -$12,843 | $45,416 | 22.0% |
| 25th Percentile (P25) | $63,370 | -$14,305 | $49,064 | 22.6% |
| Median (P50) | $78,850 | -$19,793 | $59,056 | 25.1% |
| 75th Percentile (P75) | $109,300 | -$30,587 | $78,712 | 28.0% |
| 90th Percentile (P90) | $135,380 | -$40,238 | $95,141 | 29.7% |
After federal income tax ($9,188), state tax ($4,573), and FICA ($6,032), a Hydrologists in Idaho takes home $59,056 per year — or $4,921 per month. The effective tax rate of 25.1% is moderate compared to the national range.
With an effective total rate of 25.1%, a Hydrologists in Idaho keeps $59,057 of $78,850 gross — roughly typical for U.S. middle-income earners once federal, FICA and state taxes are combined.
Idaho applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Hydrologists salary that contributes $4,573 to the 5.8% effective state-tax burden.
Federal tax on this Hydrologists salary is $9,188 (46%), but combined state ($4,573, 23%) + FICA ($6,032, 30%) make up the other 54% of the bill.
Moving this same Hydrologists salary to a zero-state-tax state would yield around $63,630 net — a gain of $4,573 (7.7%) per year versus Idaho.
Idaho sits near the bottom (#33 of 34) for Hydrologists after-tax earnings. Relocation, negotiation, or credential stacking typically show the clearest ROI in bottom-quartile states.
Translated into paycheck cadences, $59,057 net/year works out to $4,921/month or $2,271/bi-weekly for this Hydrologists in Idaho — the numbers that actually hit a checking account after every deduction.
Where does a Hydrologists keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Idaho ranks #33 out of 34 states for Hydrologists after-tax take-home pay.
A Hydrologists in Idaho earning a median salary of $78,850 will take home approximately $59,056 per year after federal income tax ($9,188), state income tax ($4,573), and FICA ($6,032). That is $4,921 per month or $2,271 per bi-weekly paycheck.
The effective total tax rate for a Hydrologists in Idaho is 25.1%, broken down as: federal income tax 11.7%, Idaho state tax 5.8%, and FICA (Social Security + Medicare) 7.6%. This assumes a single filer with the standard deduction for 2024.
Idaho has a 5.8% flat rate. On a Hydrologists's median salary of $78,850, the state income tax amounts to $4,573 per year, which is an effective state rate of 5.8%.
After all taxes, a Hydrologists in Idaho takes home approximately $4,921 per month, or about $28.39 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 $78,850 for Hydrologists 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 — $59,056/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