Last updated: 2025 BLS data · Page refreshed:
How much does a Water and Wastewater Treatment Plant and System Operators actually take home in Montana?
Progressive (up to 5.9%) — 21.7% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Water and Wastewater Treatment Plant and System Operators earning $58,040 in Montana (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $58,040 | — |
| Federal Income Tax | -$4,980 | 8.6% |
| Montana State Income Tax | -$3,178 | 5.5% |
| Social Security (OASDI) | -$3,598 | 6.2% |
| Medicare | -$841 | 1.5% |
| Total Taxes | -$12,599 | 21.7% |
| Take-Home Pay | $45,440 | 78.3% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Water and Wastewater Treatment Plant and System Operators in Montana.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $37,320 | -$7,305 | $30,014 | 19.6% |
| 25th Percentile (P25) | $49,960 | -$10,534 | $39,425 | 21.1% |
| Median (P50) | $58,040 | -$12,599 | $45,440 | 21.7% |
| 75th Percentile (P75) | $68,580 | -$15,975 | $52,604 | 23.3% |
| 90th Percentile (P90) | $81,420 | -$20,539 | $60,880 | 25.2% |
After federal income tax ($4,980), state tax ($3,178), and FICA ($4,440), a Water and Wastewater Treatment Plant and System Operators in Montana takes home $45,440 per year — or $3,786 per month. The effective tax rate of 21.7% is relatively low compared to the national range.
With an effective total rate of 21.7%, a Water and Wastewater Treatment Plant and System Operators in Montana keeps $45,441 of $58,040 gross — roughly typical for U.S. middle-income earners once federal, FICA and state taxes are combined.
Montana uses a progressive state income tax, so brackets escalate as wages rise. For this Water and Wastewater Treatment Plant and System Operators salary the state tax works out to $3,178 (5.5% effective) — on top of federal and FICA.
Federal tax on this Water and Wastewater Treatment Plant and System Operators salary is $4,981 (40%), but combined state ($3,178, 25%) + FICA ($4,440, 35%) make up the other 60% of the bill.
Moving this same Water and Wastewater Treatment Plant and System Operators salary to a zero-state-tax state would yield around $48,619 net — a gain of $3,178 (7.0%) per year versus Montana.
Montana ranks #32 of 50 states for Water and Wastewater Treatment Plant and System Operators 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, $45,441 net/year works out to $3,787/month or $1,748/bi-weekly for this Water and Wastewater Treatment Plant and System Operators in Montana — the numbers that actually hit a checking account after every deduction.
Where does a Water and Wastewater Treatment Plant and System Operators keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Montana ranks #32 out of 50 states for Water and Wastewater Treatment Plant and System Operators after-tax take-home pay.
A Water and Wastewater Treatment Plant and System Operators in Montana earning a median salary of $58,040 will take home approximately $45,440 per year after federal income tax ($4,980), state income tax ($3,178), and FICA ($4,440). That is $3,786 per month or $1,747 per bi-weekly paycheck.
The effective total tax rate for a Water and Wastewater Treatment Plant and System Operators in Montana is 21.7%, broken down as: federal income tax 8.6%, Montana state tax 5.5%, and FICA (Social Security + Medicare) 7.7%. This assumes a single filer with the standard deduction for 2024.
Montana has a progressive (up to 5.9%). On a Water and Wastewater Treatment Plant and System Operators's median salary of $58,040, the state income tax amounts to $3,178 per year, which is an effective state rate of 5.5%.
After all taxes, a Water and Wastewater Treatment Plant and System Operators in Montana takes home approximately $3,786 per month, or about $21.85 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 $58,040 for Water and Wastewater Treatment Plant and System Operators 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 — $45,440/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