Illinois vs Montana Paycheck Comparison 2026
Annual salary
Annual salary
Additional options (filing status, deductions)
$691 /yr more take-home in Montana
$58/mo · $27 a paycheck.
Illinois
Montana
$58,025/yr in Illinois vs $58,716/yr in Montana.
Illinois
Take-home per paycheck
$2,231.72
$58,025/yr · 26x/yr
Tax rates
Montana
Take-home per paycheck
$2,258.30
$58,716/yr · 26x/yr
Tax rates
What this paycheck affords in Illinois vs Montana
Sized off $4,835/mo take-home in Illinois and $4,893/mo in Montana. Every figure below is a spending rule of thumb, not a tax rule.
Purchasing power
$59,124 is what Illinois take-home is worth at Montana prices
Against $58,716 actually paid in Montana, leaving Illinois $408/yr ahead once cost of living is taken off.
Rent
$142 /mo more for a two-bedroom in Montana
$1,180/mo in Illinois, $1,322/mo in Montana.
The average two-bedroom takes 24% of take-home in Illinois and 27% in Montana — inside the comfortable range in both.
Buying a home
$150,000 more for the median home in Montana
$260,000 in Illinois, $410,000 in Montana.
The median home is 1.1× what this salary supports in Illinois and 1.4× in Montana. Lenders size a mortgage off gross pay, so the budgets start from $75,000 at a 28% debt-to-income ratio, 6.75% over 30 years, each with its own state property tax rate.
What's left each month
$30 /mo more left over in Illinois
Illinois has $1,218/mo spare; Montana has $1,188/mo spare.
Both paychecks cover the local average for everything. Splitting rent with one roommate would free up $590/mo in Illinois and $661/mo in Montana.
Monthly cost by expense class
Every class on one scale, so housing's share of the month stays visible. Housing is the measured average two-bedroom; the rest are BLS Consumer Expenditure Survey averages moved by each state's cost-of-living index.
Other costs
| Cost | Illinois | Montana |
|---|---|---|
| Regular gas | $3.60/gal | $3.19/gal |
| Electricity | $108/mo | $96/mo |
| Infant childcare | $1,342/mo | $1,065/mo |
Childcare sits outside the budget above because it applies to some households and not others — on its own it is 28% of take-home in Illinois and 22% in Montana.
Sources: MERIC/C2ER Cost of Living Index (2025), AAA Fuel Gauge Report (2025), EIA State Electricity Profiles (2024), Child Care Aware of America (2024), Zillow Home Value Index (2025), BEA Regional Price Parities (2024)
Estimate based on 2026 tax rates and standard deductions. Does not include local taxes, itemized deductions, tax credits, or other individual circumstances.
Tax system comparison
Illinois: Illinois has a flat state income tax of 4.95%. All taxable income is taxed at the same rate.
Montana: Montana uses a progressive income tax with 2 brackets ranging from 4.70% to 5.65%.
Take-home pay at different salaries (single filer, 2026)
| Salary | Illinois take-home | Montana take-home | Difference |
|---|---|---|---|
| $50,000 | $40,025 | $40,762 | -$737 |
| $75,000 | $58,025 | $58,716 | -$691 |
| $100,000 | $74,375 | $74,891 | -$516 |
| $150,000 | $106,511 | $106,677 | -$166 |
| $200,000 | $139,172 | $138,988 | + $184 |
| $300,000 | $200,472 | $199,588 | + $884 |
Positive values mean higher take-home in Illinois. Assumes single filer, no deductions.
FAQ
Which state has lower taxes, Illinois or Montana?
At a $100,000 salary, Montana results in $516 more annual take-home pay. Illinois has a flat state income tax of 4.95%. All taxable income is taxed at the same rate. Montana uses a progressive income tax with 2 brackets ranging from 4.70% to 5.65%.
How much more do you take home in Montana vs the other state?
The difference depends on salary. At $50,000, the gap is $737/yr. At $150,000, it grows to $166/yr. At $300,000, the difference is $884/yr.
Do Illinois and Montana have the same federal taxes?
Yes. Federal income tax, Social Security, and Medicare are the same in every state. Only state income tax differs. This calculator shows the combined effect of federal and state taxes on your take-home pay.
Is it cheaper to live in Illinois or Montana?
Illinois is cheaper to live in. Cost of living in Illinois and Montana is about the same. Illinois's Regional Price Parity is 97.1 and Montana's is 97.2 (US average = 100).
Is Illinois cheaper than Montana?
Yes. Illinois has a lower cost of living than Montana (index 97.1 vs 97.2). Housing is typically the biggest difference between the two states.
Is Montana more expensive than Illinois?
Yes. Montana has a higher cost of living (index 97.2) compared to Illinois (index 97.1). The national average is 100. Housing costs are typically the largest driver of the difference.
After cost of living, which state is actually cheaper?
At a $100,000 salary, take-home pay of $74,375 in Illinois has the purchasing power of $74,298 in Montana terms. Conversely, $74,891 in Montana equals $74,968 in Illinois terms. After adjusting for both taxes and cost of living, Montana comes out ahead.
Illinois vs Montana cost of living — what's the difference?
The overall cost of living is 0% different between Illinois and Montana. Living costs are about 3% below the national average Living costs are about 3% below the national average After taxes and cost of living, Montana gives you more purchasing power on a $100,000 salary.
Do I need to file state tax returns in both Illinois and Montana?
Illinois requires residents to file a state income tax return annually, typically due April 15. Montana requires residents to file a state income tax return annually, typically due April 15. If you move between states mid-year, you typically file a part-year resident return in each state for the income earned while living there. Each state has its own tax return form — check your state's department of revenue website for the correct form and e-filing options.
Related tools
- Illinois vs Montana Cost of Living — Compare housing, groceries, utilities, and overall expenses
- Illinois Cost of Living — Housing, groceries, gas, and overall index
- Montana Cost of Living — Housing, groceries, gas, and overall index
- How much house can you afford in Illinois?
- How much house can you afford in Montana?
- Illinois Tax Brackets — See 2026 marginal rates and effective tax rate
- Montana Tax Brackets — See 2026 marginal rates and effective tax rate
- Illinois Bonus Tax Calculator — See how bonuses are taxed differently
- Montana Bonus Tax Calculator — See how bonuses are taxed differently
- Pay Raise Calculator — See how a raise changes your take-home pay
- Gross-Up Calculator — Find the salary you need to hit a target take-home
- Salary to Hourly Converter — Convert annual salary to hourly rate
- Mortgage Calculator — Estimate monthly payments with local rates
Illinois Paycheck Estimator · Montana Paycheck Estimator · All states