Montana Payroll · Two-rate 4.7%–5.9% · Form MW-4 · IRS Publication 15-T
Montana Paycheck Calculator 2025
Estimate your Montana take-home pay for hourly or salaried work in a single form. The calculator deducts federal income tax withholding, Social Security, Medicare, and the two-rate Montana income tax using the Department of Revenue Employer and Information Agent Guide percentage method. Montana removed withholding allowances; you simply mark a marital status on Form MW-4 and the standard deduction is built into the table's zero-tax band. Uses 2025 IRS Publication 15-T and the Montana withholding tables in effect for 2025.
Pay Details
Montana's Form MW-4 uses the same marital status categories as the federal W-4. Married filing separately uses the single table on both.
Check this on Form W-4 if you hold two jobs or your spouse also works. It switches to the higher federal Step 2 withholding schedule.
W-4 Adjustments (Optional)
Annual dependent credit total (e.g. $2,000 per child under 17)
Step 4c additional federal withholding per paycheck
Montana Tax (Form MW-4)
Only affects married filing jointly. Form MW-4 line 2 tells the employer to withhold a two-earner married worker at the single table, which has a narrower zero-tax band, so two-income couples are not under-withheld.
Additional Montana withholding you request on Form MW-4 beyond the table amount.
Enter your pay details and click Calculate to see your take-home pay breakdown.
Want the full Montana payroll picture, including how the withholding reconciles on Form 2, why Montana removed allowances, the North Dakota reciprocity agreement, and the employer unemployment obligations? Read the Montana Payroll Taxes guide.
Montana Payroll Taxes Guide →Short Answer
This Montana paycheck calculator estimates net take-home pay after federal income tax withholding, Social Security (6.2%), Medicare (1.45%), and the two-rate Montana income tax. Montana withholds by annualizing wages, then applying the 4.7% / 5.9% percentage-method schedule for your Form MW-4 marital status, rounding to the nearest dollar. For a single Montana worker earning $65,000 per year paid biweekly, gross pay is about $2,500 per period, and net take-home is roughly $1,977 after about $227 of federal withholding, FICA, and about $104 of Montana income tax. Montana removed withholding allowances, has no local wage tax, and has no state disability, family leave, or employee unemployment deduction.
Key Takeaways
- Montana withholds a two-rate income tax on every paycheck. This calculator applies the Department of Revenue percentage method: annualize wages, then apply the 4.7% / 5.9% schedule for your Form MW-4 marital status, divide by pay periods, and round to the nearest dollar.
- Montana removed withholding allowances from Form MW-4 beginning in 2025. There are no personal or dependent exemptions for withholding; you just mark a marital status. The withholding table's zero-tax first band ($15,000 single, $30,000 married, $22,500 head of household on the 2025 annual table) is the federal standard deduction built in.
- Montana's 2025 rates are 4.7% on taxable wages up to a filing-status threshold and 5.9% above it. A single filer crosses into the 5.9% band at $36,100 of annual wages, so most full-time single workers see an effective Montana rate in the low-4% to low-5% range.
- A married couple where both spouses work can mark MW-4 line 2 to be withheld at the single table. Two-earner couples usually should, because the married table's zero-tax band is wider and both spouses using the married table can under-withhold and owe at filing.
- There is no local city or county wage tax anywhere in Montana. Montana has a reciprocity agreement with North Dakota only: a North Dakota resident working in Montana is not taxed by Montana on those wages.
- Federal income tax uses the IRS Publication 15-T percentage method. Social Security is 6.2% up to the 2025 wage base of $176,100; Medicare is 1.45% with no cap plus a 0.9% surtax that employers withhold on wages above $200,000. For supplemental pay use the Bonus Tax Calculator and RSU Tax Calculator.
2025 Montana Payroll Tax Quick Reference
| Tax | Rate | Wage Base / Threshold | Notes |
|---|---|---|---|
| Federal Income Tax | 10%–37% | No cap | Graduated brackets. Based on W-4 filing status and Publication 15-T percentage method tables. |
| Social Security (OASDI) | 6.2% employee | $176,100 (2025) | Withholding stops at wage base. Employer matches 6.2%. |
| Medicare (HI) | 1.45% employee | No limit | Employer matches 1.45%. |
| Additional Medicare Tax | 0.9% | $200,000 single/HOH; $250,000 MFJ; $125,000 MFS | Employee only. Employer withholds once individual wages exceed $200,000 in the calendar year. |
| Montana Income Tax | 4.7% / 5.9% | Two-rate percentage-method schedule | 4.7% up to a filing-status threshold, 5.9% above (2025). Withheld via the MW-4 percentage method; rounded to the nearest dollar. |
| MT zero-tax band (built-in deduction) | – | $15,000 / $30,000 / $22,500 | Annual wages under this band withhold $0. Single / married filing jointly / head of household. These are the pre-OBBBA federal standard-deduction amounts Montana adopted for its 2025 withholding tables. |
| Employee disability / family leave | None | – | No employee deduction. Montana has no state disability or paid family leave payroll program. |
| Employee unemployment (UI) | None | – | Unemployment is employer-funded; the 2026 taxable wage base is $47,300 (up from $45,100 in 2025). |
| Local wage income tax | None | – | No city or county wage tax anywhere in Montana. |
| Reciprocity | North Dakota | – | Montana and North Dakota have a reciprocity agreement; cross-border residents are taxed only by their home state. |
How This Calculator Works
Hourly Mode: Gross Pay Per Period
Gross pay per period equals the hourly rate multiplied by hours worked per week, then scaled to the pay period. For biweekly pay: hourly rate × hours per week × 2. For weekly: hourly rate × hours per week. For semi-monthly and monthly: hourly rate × hours per week × (52 ÷ periods per year).
Salary Mode: Gross Pay Per Period
Gross pay per period equals annual salary divided by the number of pay periods per year. Weekly: ÷ 52. Biweekly: ÷ 26. Semi-monthly: ÷ 24. Monthly: ÷ 12.
Social Security Tax
Social Security is 6.2% of annualized gross wages up to the $176,100 wage base for 2025. The per-period amount is the annualized Social Security tax divided by pay periods. This calculator does not track year-to-date cumulative wages, so for workers approaching the wage base, actual withholding will stop mid-year once the limit is reached.
Medicare Tax
Standard Medicare is 1.45% on all gross wages. The calculator adds the 0.9% Additional Medicare Tax on annualized wages above $200,000, matching the employer withholding rule in IRS Topic 560: employers withhold the surtax once wages exceed $200,000 in a calendar year regardless of filing status. Your final liability on Form 8959 uses filing-status thresholds ($200,000 single/HOH, $250,000 MFJ, $125,000 MFS), so married filers may reconcile the difference at filing.
Federal Income Tax Withholding
The calculator follows IRS Publication 15-T Worksheet 1A (Percentage Method for Automated Payroll Systems) for 2025:
- Annualize the per-period gross pay (multiply by pay periods per year) - line 1c.
- Add Step 4a other income; subtract Step 4b additional deductions - lines 1d-1f.
- Subtract the line 1g allowance: $12,900 for married filing jointly or $8,600 otherwise. If the W-4 Step 2 box is checked, subtract $0 instead. The result is the Adjusted Annual Wage Amount (line 1i).
- Apply the Annual Percentage Method table for the W-4 filing status - the STANDARD schedule, or the Step 2 Checkbox schedule when the Step 2 box is checked - to get the tentative annual withholding (line 2g), then divide by pay periods (line 2h).
- Subtract Step 3 dependent credits divided by pay periods (line 3c).
- Add Step 4c extra withholding per period (line 4b).
Montana Income Tax Withholding
Montana withholds income tax using the percentage method in the Montana Department of Revenue Employer and Information Agent Guide. Beginning in 2025, Montana removed withholding allowances from Form MW-4: the employee marks a marital status box, and the withholding tables build in the federal standard deduction for that status as a zero-tax band. There are no personal or dependent exemptions for withholding. The steps are:
- Annualize the per-period gross pay (multiply by pay periods per year).
- Apply the two-rate annual withholding schedule below for your MW-4 marital status (single, married filing jointly, or head of household). The zero-tax first band builds in the standard deduction, so it is not subtracted separately.
- Divide by pay periods to get the per-period withholding, round to the nearest dollar, then add any extra Montana withholding you requested.
| Annual wages (single, 2025) | Withholding |
|---|---|
| $0 to $15,000 | $0 |
| $15,000 to $36,100 | 4.7% of the excess over $15,000 |
| Over $36,100 | $992 + 5.9% of the excess over $36,100 |
These are the Montana percentage-method withholding amounts for the Annual Payroll Period (single, 2025). The married-filing-jointly schedule uses the same rates with a wider zero-tax band ($30,000, then 4.7% to $72,200, then $1,983 + 5.9%), and the head-of-household schedule sits between them ($22,500 zero-tax band, 4.7% to $54,200, then $1,490 + 5.9%). A married couple where both spouses work can be withheld at the single table (MW-4 line 2). Montana also publishes per-frequency wage-bracket tables; because those round their bracket constants to the period, an employer using them may withhold a few cents more or less per check than this annualized computation, and Montana rounds the final per-paycheck figure to the nearest dollar. Both are approved methods and reconcile on your Montana Form 2 return. Beginning January 1, 2026, House Bill 337 lowers the top rate to 5.65% and widens the brackets.
What Montana Does Not Deduct
Montana has no state disability insurance, no paid family leave payroll deduction, and no employee unemployment tax. Unemployment insurance is funded entirely by employers through the Montana Department of Labor and Industry. There is also no local wage tax anywhere in Montana, so the only recurring Montana line on a pay stub is the state income tax.
Real-World Paycheck Scenarios
Scenario 1: Single Worker Paid Biweekly
Dylan earns $65,000 per year at a firm in Billings. He is paid biweekly and marks single on his Form MW-4. His biweekly gross is $65,000 ÷ 26 = $2,500.00.
Montana income tax detail (annualized): on the single schedule $65,000 is above the $36,100 threshold, so the annual withholding is $992 + 5.9% of ($65,000 − $36,100) = $2,697.10 for the year, divided by 26 = $103.73, rounded to $104 per paycheck. Dylan's effective Montana rate is about 4.2% of gross. There are no disability, family leave, or unemployment lines, money a worker in New Jersey or Washington would see deducted.
Scenario 2: Married One-Earner Household
Sara earns $95,000 as a project manager in Missoula. She is paid biweekly, is married filing jointly, and her spouse has no income, so she marks the married box on Form MW-4 (not line 2). Her biweekly gross is $95,000 ÷ 26 = $3,653.85.
Sara's Montana tax: on the married schedule $95,000 is above the $72,200 threshold, so the annual withholding is $1,983 + 5.9% of ($95,000 − $72,200) = $3,328.20 for the year, divided by 26 = $128.01, rounded to $128. The married table is only the right choice because Sara's spouse has no income. If both spouses worked and Sara marked MW-4 line 2 to use the single table, her withholding would rise to about $172 per period, roughly $1,144 a year, and keep the household from landing short on Montana Form 2.
Practitioner Insight
The first thing we explain about Montana now is that the allowances are gone. Montana rebuilt Form MW-4 in 2025 and removed personal and dependent exemptions entirely, so there is nothing to count. The employee just marks a marital status, and the standard deduction is already baked into the zero-tax band of the table. Clients who remember claiming allowances keep asking how many to put down; the honest answer is none, because the field no longer exists.
The second pattern is the two-earner married couple. Montana's married table has a $30,000 zero-tax band, double the single band, so when both spouses are withheld on the married table each employer withholds as if that salary were the household's only income, and the couple can owe at filing. The fix is on Form MW-4 itself: both spouses mark line 2, which routes their wages through the single table with the narrower $15,000 band.
The third item is North Dakota reciprocity. Montana and North Dakota have a reciprocity agreement, so a North Dakota resident commuting to a Montana job is not taxed by Montana on those wages, and a Montana resident working across the line in North Dakota files North Dakota Form NDW-R and pays Montana. Border-county clients around Sidney and Wibaux are the ones this comes up for; everyone else in Montana has a single-state return.
When This Calculator Gives a Less Accurate Estimate
- Pre-tax deductions not entered: A 401(k) or 403(b) contribution and Section 125 medical premiums reduce the wages subject to both federal and Montana income tax withholding. This calculator does not model pre-tax deductions, so actual income tax withholding is lower and net pay is typically higher than the estimate.
- Two-earner married households: Montana's married table has a wider zero-tax band than the single table. If both spouses are withheld on the married table, combined withholding can fall short. Mark MW-4 line 2 so both jobs run through the single table; this calculator models that with the "both spouses working" option.
- Per-frequency versus annualized tables: Montana also publishes shorter per-pay-period wage-bracket tables. An employer using them can differ by a dollar or two from the annualized percentage-method computation this calculator uses; both are approved methods and reconcile on Montana Form 2.
- 2026 rate change: This calculator uses the 2025 schedule (5.9% top rate). Beginning January 1, 2026, House Bill 337 lowers the top rate to 5.65% and widens the 4.7% band, so 2026 withholding is slightly lower than shown here. The Montana Payroll Taxes guide covers the 2026 figures.
- Year-to-date Social Security cap: The calculator annualizes Social Security evenly. For a worker who passes the $176,100 wage base mid-year, actual Social Security withholding stops at that point rather than spreading across every paycheck.
- Supplemental wages: Montana does not use a separate flat supplemental rate; bonuses and commissions are withheld on the total of regular plus supplemental wages through the regular MW-4 tables. For the federal supplemental math on a bonus, use the Bonus Tax Calculator.
Frequently Asked Questions
How is take-home pay calculated in Montana?
Montana take-home pay equals gross pay minus federal income tax withholding, Social Security (6.2%), Medicare (1.45%), and Montana income tax withholding. Federal withholding uses IRS Publication 15-T. Montana income tax is withheld with the Department of Revenue percentage method: annualize wages, then apply the two-rate 4.7% / 5.9% schedule for your Form MW-4 marital status and divide by pay periods, rounding to the nearest dollar. Montana has no local wage income tax and no employee-paid disability, family leave, or unemployment contribution.
Does Montana have withholding allowances?
No. Montana removed withholding allowances from Form MW-4 beginning in 2025. Employees no longer claim personal or dependent exemptions for withholding. Instead, the employee marks a marital status box on Form MW-4 (single, married filing jointly, head of household, or married with both spouses working), and the withholding tables build in the federal standard deduction for that status as a zero-tax band.
What are Montana's income tax withholding rates for 2025?
Montana withholds on a two-rate schedule: 4.7% on taxable wages up to a filing-status threshold and 5.9% above it for 2025. The withholding table's first band is a zero-tax band that builds in the federal standard deduction, so a single filer owes no Montana withholding on the first $15,000 of annual wages, a married-filing-jointly filer owes none on the first $30,000, and a head of household owes none on the first $22,500. Beginning January 1, 2026 the top rate drops to 5.65% and the brackets widen.
Does Montana have a local city income tax?
No. Montana has no municipal or county wage income tax withheld from employees anywhere in the state, including Billings, Missoula, Great Falls, Bozeman, and Helena. A Montana pay stub shows federal taxes and the state income tax, with no city or local wage line.
Does Montana have tax reciprocity with another state?
Yes. Montana has a reciprocity agreement with North Dakota. A North Dakota resident who works in Montana is not taxed by Montana on those wages, and a Montana resident who works in North Dakota files North Dakota Form NDW-R to be exempt from North Dakota withholding and pays Montana tax instead. North Dakota is Montana's only reciprocity partner.
What is the Social Security wage base for 2025?
The Social Security wage base for 2025 is $176,100. Social Security tax at 6.2% applies to wages up to this amount, and withholding stops once cumulative wages exceed $176,100 for the year. Medicare has no wage base limit and continues at 1.45% on all wages. Employers withhold an additional 0.9% Medicare surtax on wages above $200,000 regardless of filing status; final liability thresholds are $250,000 for married filing jointly and $125,000 for married filing separately.
What To Do Next
If your Montana paycheck estimate looks off, first confirm the marital status you marked on Form MW-4 is what you intended, since Montana withholding follows it directly, then check whether pre-tax benefit deductions (401k, health insurance) are lowering your taxable wages. If you are married and both spouses work, mark MW-4 line 2 so you are withheld on the single table and are not short at filing. To see how your withholding connects to your year-end return, read the Montana Payroll Taxes guide and our How Payroll Taxes Work guide.
For hourly workers who also receive overtime, the Hourly Paycheck Calculator lets you model specific hours and frequencies. For a generic multi-state view, use the Paycheck Calculator. To understand every line item on your Montana pay stub, see our How to Read a Pay Stub guide.
If you have self-employment income in addition to wages, the 1099 Tax Calculator estimates your full federal tax burden including self-employment tax. If you need to estimate quarterly payments on that income, use the Quarterly Tax Calculator. To track a filed state or federal refund, use the Refund Tracker.
Sources & Editorial Disclosure
- Montana Department of Revenue, Employer and Information Agent Guide with Montana Withholding Tax Tables (for use beginning January 1, 2026): the percentage-method formula W = A + (B x (G - C)), the per-frequency and annual tables for each MW-4 status, the removal of allowances, the standard deduction built into the zero-tax band, the nearest-dollar rounding rule, the supplemental-wage aggregate method, and the North Dakota reciprocity agreement
- Montana Department of Revenue, 2026 Withholding Updates: House Bill 337 lowering the top rate to 5.65% for 2026 and the widened 4.7% brackets ($47,500 single, $71,250 head of household, $95,000 joint)
- USDA National Finance Center, Montana State Income Tax Withholding (2025): the 2025 two-rate annual tables mirroring the Montana formula (single $15,000 / $36,100, married $30,000 / $72,200, head of household $22,500 / $54,200, 4.7% / 5.9%)
- Montana Department of Labor and Industry / Bloomberg Tax: employer-funded unemployment, 2026 taxable wage base $47,300 (up from $45,100 in 2025), new-employer rate
- IRS Publication 15-T (2025), Employer's Tax Guide to Federal Income Tax Withholding
- IRS Topic 751, Social Security and Medicare Withholding Rates
- Social Security Administration, 2025 Wage Base ($176,100)
- Authored by Munib Ur Rehman · Reviewed by Nausheen Shahid, LMN Tax Inc. Not affiliated with the IRS or the Montana Department of Revenue. For informational purposes only.