Last updated: 2025 BLS data · Page refreshed:
How much does a Petroleum Engineers actually take home in Montana?
Progressive (up to 5.9%) — 27.5% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Petroleum Engineers earning $104,060 in Montana (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $104,060 | — |
| Federal Income Tax | -$14,734 | 14.2% |
| Montana State Income Tax | -$5,893 | 5.7% |
| Social Security (OASDI) | -$6,451 | 6.2% |
| Medicare | -$1,508 | 1.4% |
| Total Taxes | -$28,588 | 27.5% |
| Take-Home Pay | $75,471 | 72.5% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Petroleum Engineers in Montana.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $77,450 | -$19,128 | $58,321 | 24.7% |
| 25th Percentile (P25) | $80,380 | -$20,170 | $60,209 | 25.1% |
| Median (P50) | $104,060 | -$28,588 | $75,471 | 27.5% |
| 75th Percentile (P75) | $137,540 | -$40,938 | $96,601 | 29.8% |
| 90th Percentile (P90) | $155,590 | -$47,716 | $107,873 | 30.7% |
After federal income tax ($14,734), state tax ($5,893), and FICA ($7,960), a Petroleum Engineers in Montana takes home $75,471 per year — or $6,289 per month. The effective tax rate of 27.5% is moderate compared to the national range.
A Petroleum Engineers in Montana loses 27.5% of gross pay to taxes — higher than the ~25% national midpoint. Of the $104,060 gross, $75,472 lands in the paycheck after federal ($14,734), state ($5,894), and FICA ($7,961) withholding.
Montana uses a progressive state income tax, so brackets escalate as wages rise. For this Petroleum Engineers salary the state tax works out to $5,894 (5.7% effective) — on top of federal and FICA.
Federal tax on this Petroleum Engineers salary is $14,734 (52%), but combined state ($5,894, 21%) + FICA ($7,961, 28%) make up the other 48% of the bill.
Moving this same Petroleum Engineers salary to a zero-state-tax state would yield around $81,365 net — a gain of $5,894 (7.8%) per year versus Montana.
Montana sits near the bottom (#13 of 16) for Petroleum Engineers after-tax earnings. Relocation, negotiation, or credential stacking typically show the clearest ROI in bottom-quartile states.
Translated into paycheck cadences, $75,472 net/year works out to $6,289/month or $2,903/bi-weekly for this Petroleum Engineers in Montana — the numbers that actually hit a checking account after every deduction.
Where does a Petroleum Engineers keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Montana ranks #13 out of 16 states for Petroleum Engineers after-tax take-home pay.
A Petroleum Engineers in Montana earning a median salary of $104,060 will take home approximately $75,471 per year after federal income tax ($14,734), state income tax ($5,893), and FICA ($7,960). That is $6,289 per month or $2,902 per bi-weekly paycheck.
The effective total tax rate for a Petroleum Engineers in Montana is 27.5%, broken down as: federal income tax 14.2%, Montana state tax 5.7%, and FICA (Social Security + Medicare) 7.6%. This assumes a single filer with the standard deduction for 2024.
Montana has a progressive (up to 5.9%). On a Petroleum Engineers's median salary of $104,060, the state income tax amounts to $5,893 per year, which is an effective state rate of 5.7%.
After all taxes, a Petroleum Engineers in Montana takes home approximately $6,289 per month, or about $36.28 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 $104,060 for Petroleum Engineers in Montana, then subtract: federal income tax using 2024 IRS brackets ($14,600 standard deduction), Montana state income tax (progressive (up to 5.9%)), Social Security (6.2% up to $168,600), and Medicare (1.45%). The result — $75,471/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