Last updated: 2025 BLS data · Page refreshed:
How much does a Hydrologists actually take home in Iowa?
3.9% flat rate — 23.5% 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 $81,150 in Iowa (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $81,150 | — |
| Federal Income Tax | -$9,694 | 11.9% |
| Iowa State Income Tax | -$3,164 | 3.9% |
| Social Security (OASDI) | -$5,031 | 6.2% |
| Medicare | -$1,176 | 1.4% |
| Total Taxes | -$19,066 | 23.5% |
| Take-Home Pay | $62,083 | 76.5% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Hydrologists in Iowa.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $66,180 | -$14,044 | $52,135 | 21.2% |
| 25th Percentile (P25) | $66,180 | -$14,044 | $52,135 | 21.2% |
| Median (P50) | $81,150 | -$19,066 | $62,083 | 23.5% |
| 75th Percentile (P75) | $108,490 | -$28,239 | $80,250 | 26.0% |
| 90th Percentile (P90) | $136,340 | -$38,007 | $98,332 | 27.9% |
After federal income tax ($9,694), state tax ($3,164), and FICA ($6,207), a Hydrologists in Iowa takes home $62,083 per year — or $5,173 per month. The effective tax rate of 23.5% is relatively low compared to the national range.
With an effective total rate of 23.5%, a Hydrologists in Iowa keeps $62,083 of $81,150 gross — roughly typical for U.S. middle-income earners once federal, FICA and state taxes are combined.
Iowa applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Hydrologists salary that contributes $3,165 to the 3.9% effective state-tax burden.
Federal tax on this Hydrologists salary is $9,694 (51%), but combined state ($3,165, 17%) + FICA ($6,208, 33%) make up the other 49% of the bill.
Moving this same Hydrologists salary to a zero-state-tax state would yield around $65,248 net — a gain of $3,165 (5.1%) per year versus Iowa.
Iowa sits near the bottom (#30 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, $62,083 net/year works out to $5,174/month or $2,388/bi-weekly for this Hydrologists in Iowa — 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.
Iowa ranks #30 out of 34 states for Hydrologists after-tax take-home pay.
A Hydrologists in Iowa earning a median salary of $81,150 will take home approximately $62,083 per year after federal income tax ($9,694), state income tax ($3,164), and FICA ($6,207). That is $5,173 per month or $2,387 per bi-weekly paycheck.
The effective total tax rate for a Hydrologists in Iowa is 23.5%, broken down as: federal income tax 11.9%, Iowa state tax 3.9%, and FICA (Social Security + Medicare) 7.7%. This assumes a single filer with the standard deduction for 2024.
Iowa has a 3.9% flat rate. On a Hydrologists's median salary of $81,150, the state income tax amounts to $3,164 per year, which is an effective state rate of 3.9%.
After all taxes, a Hydrologists in Iowa takes home approximately $5,173 per month, or about $29.85 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 $81,150 for Hydrologists in Iowa, then subtract: federal income tax using 2024 IRS brackets ($14,600 standard deduction), Iowa state income tax (3.9% flat rate), Social Security (6.2% up to $168,600), and Medicare (1.45%). The result — $62,083/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