Montana Rent Calculator

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Montana Rent Calculator

Montana taxes wages at 4.7 percent starting from federal taxable income with no standard deduction and no city income tax, and Montana places no cap on the security deposit but requires a 10-day return when there are no deductions. This calculator sizes the rent that income supports against both the 30 percent standard and the income ratio your landlord publishes, prices the cash you need at signing, and benchmarks your rent against the HUD Fair Market Rent for your county.

What Do You Want To Calculate?

The second and third modes require a target monthly rent. The third solves for annual salary.

Location and Unit

Select the county where you will rent.
Selects the HUD FY 2025 Fair Market Rent for your county.
Select a county to load its HUD Fair Market Rent schedule and the income a published screening ratio would require at that benchmark. Rural counties map to the representative non-metropolitan area.

Household Income

Wages before tax from every household earner. Montana taxes federal taxable income at 4.7 percent with no city income tax. Enter your annual gross household salary.
Child support, pension, Social Security or a side income. Enter 0 or more.
401(k), 403(b), 457 or traditional IRA. Reduces federal and Montana taxable income but not FICA wages. Enter 0 or more.
Sets the federal standard deduction used as the Montana taxable-income base.
Drives the $2,000 federal child tax credit for the first three dependents. Enter 0 to 10.
Base rent of the listing, before utilities and fees. Enter a target monthly rent greater than 0.
Montana sets no statutory income ratio, so the figure in the landlord’s written screening criteria governs.

Monthly Money Commitments

Minimum credit card payments, auto loans, student loans and support obligations. Counted in the debt-to-income ratio. Enter 0 or more.
Enter 0 or more.
Groceries, fuel, insurance, phone, internet, childcare and health costs. Leaving this at zero overstates the rent you can carry. Enter 0 or more.

Housing Add-Ons

HUD publishes Fair Market Rent as a gross rent, so this figure is added back for that comparison. Montana heating makes this line large in winter. Enter 0 or more.
Enter 0 or more.
Enter 0 or more.
Enter 0 or more.

Cash Required At Signing

Montana places no statutory cap on the security deposit; the amount is negotiable.
Prepaid rent is collected in addition to the deposit in Montana.
Montana sets no statutory cap on application fees; confirm the amount and request a receipt. Enter 0 or more.
Movers or truck, deposits to activate utilities, locks and basic supplies. Enter 0 or more.

Lease Term and Renewal

Rent cannot be raised during a fixed term. A month-to-month rent increase requires at least 30 days advance written notice.
Montana has no rent control and no cap on the increase size, only the notice rule. Enter 0 to 50.
Montana rules this calculator enforces: Montana places no cap on the security deposit; if there are no damages the landlord must return the deposit within 10 days, and if deductions are taken the landlord must send an itemized list and the balance within 30 days after the tenancy terminates (MCA 70-25-202). A month-to-month rent increase requires at least 30 days advance written notice (MCA 70-26-109 sets a 15-day term-change notice), and rent cannot be raised during a fixed term. Montana has no rent control and no cap on the increase size, no statutory cap on application fees, and no statewide just cause requirement for declining to renew a market-rate periodic tenancy.

Understanding Rent Affordability in Montana

Montana has a low 4.7 percent income tax starting from federal taxable income and no city income tax, but booming Bozeman and Missoula rents mean the binding constraint is usually the market and the screening ratio rather than the tax code.
  • Montana taxes Montana taxable income (which begins with federal taxable income; Montana has no standard deduction) at 4.7 percent for tax year 2025. There is no city or municipal income tax on wages.
  • The 30 percent affordability standard requires annual income equal to 40 times the monthly rent, while the 3 times monthly ratio most Montana landlords publish requires only 36 times. Test case 3 shows a household that clears the 3x screen yet spends 31.90 percent of gross on housing at the Missoula-area Fair Market Rent.
  • Montana places no cap on the security deposit; if there are no damages the landlord must return it within 10 days, and if deductions are taken an itemized list plus balance within 30 days (MCA 70-25-202).
  • A month-to-month rent increase requires at least 30 days advance written notice (MCA 70-26-109 sets a 15-day term-change notice), and rent cannot be raised during a fixed term. Montana has no rent control and no cap on the increase size.
  • Montana sets no statutory cap on application fees and no statewide just cause requirement for declining to renew a market-rate periodic tenancy.
  • Montana’s FY 2025 two-bedroom Fair Market Rent ranges from $933 across much of the non-metropolitan west to $1,778 in Gallatin County (Bozeman), with Missoula at $1,316, Billings at $1,226 and Great Falls at $1,121, against a $1,114 statewide average.

Sources, Methodology and Verification

Data Years

  • HUD Fair Market Rents: federal fiscal year 2025, Montana HUD metro FMR areas and non-metropolitan counties.
  • Federal and Montana income tax figures: tax year 2025 (Montana 4.7 percent on federal taxable income; no standard deduction).
  • Housing statutes: Montana Code Annotated Title 70, Chapters 25 and 26 as current through 2026.

Primary Sources

  • MCA 70-25-201 and 70-25-202 (no security deposit cap; 10-day return if no deductions, 30-day itemized list plus balance if deductions).
  • MCA 70-26-109 and Montana Law Help (month-to-month rent increase on at least 30 days advance written notice; 15-day term-change notice; no increase during a fixed term; no rent control).
  • Montana Department of Revenue 2025 tax tables and deductions (4.7 percent on Montana ordinary income beginning with federal taxable income; no standard deduction).
  • U.S. Department of Housing and Urban Development, FY 2025 Fair Market Rents for Montana, huduser.gov.
  • Internal Revenue Service Publication 15 and Publication 15-T for 2025.

Methodology Notes

  • Recommended maximum rent is the lowest of the 30 percent gross rule, the after-tax budget rule and the debt-to-income rule. The screening ratio ceiling is reported separately as an approval test.
  • The take-home engine applies federal income tax on wages minus pre-tax retirement contributions minus the federal standard deduction, less $2,000 per dependent for the first three, then FICA, then Montana income tax at 4.7 percent on federal taxable income (the 2025 schedule is approximated as flat 4.7 percent). Montana adds no municipal wage tax.
  • Because Montana places no cap on the deposit, deposit requests pass through unchanged and the deposit badge reports no statewide cap.
  • Required-income mode uses a guarded bisection solver with 60 bound expansions and 90 iterations, rounded up to the next whole dollar, evaluated against the recommended affordability figure rather than a fixed multiple.
  • Fair Market Rent comparisons add tenant-paid utilities to base rent because HUD publishes FMR as a gross rent.
  • Not modeled: Montana itemized-deduction differences from federal, Montana credits claimed at filing, and local resort-area rent premiums not captured by county FMR.

Verification Test Cases

TC1 – Yellowstone County (Billings), 1 bedroom, single, $60,000 with $3,000 pre-tax, $300 debts, $300 savings, $1,100 other living, $130 utilities, $16 insurance, $35 screening fee, one-month deposit, $500 moving, 3x ratio, affordability modeFederal tax $4,801.50, Social Security $3,720.00, Medicare $870.00, Montana tax $1,974.00 on $42,000 of taxable income, net annual $48,674.50 and net monthly $4,056.21. Rules: 30 percent $1,500.00, 3x ceiling $1,666.67, DTI $1,600.00, budget $2,606.21. Recommended $1,500.00 with the 30 percent rule binding. Total housing $1,646.00 is 32.92 percent of gross and 40.18 percent of net, cost-burdened. Cash at signing $3,750.00. Billings 1 bedroom FMR $948.00, exceeded by $682.00.
TC2 – Gallatin County (Bozeman), 2 bedroom, married filing jointly, $110,000 with 2 dependents and $6,000 pre-tax, target rent $1,778 equal to the area Fair Market Rent, two adults at $40 eachFederal tax $3,014.00 after the $4,000 child tax credit, Social Security $6,820.00, Medicare $1,595.00, Montana tax $3,478.00 on $74,000 of taxable income, net annual $81,682.00 and net monthly $6,806.83. The target passes the 3x ceiling of $3,055.56, the 30 percent test at 21.27 percent of gross, DTI at 26.73 percent and the budget test with $4,256.83 discretionary. Cash at signing $4,456.00.
TC3 – Missoula County (Missoula), 2 bedroom, single, $55,000 with $2,500 pre-tax, target rent $1,316 equal to the area Fair Market RentThe target clears the 3x screen ($47,376.00 required) yet consumes 31.90 percent of gross and 41.53 percent of net pay and pushes DTI to 38.44 percent, leaving $1,008.54 discretionary. Verdict approvable but cost-burdened. Cash at signing $3,451.00.
TC4 – Cascade County (Great Falls), 1 bedroom, single, target rent $854 equal to the area Fair Market Rent, 3x ratio, $200 debts, $250 savings, $900 other living, $120 utilities, $15 insurance, income modeSolved required annual salary $34,160.00, which makes the 30 percent rule bind at exactly $854.00. At that salary federal tax is $2,060.70, Social Security $2,117.92, Medicare $495.32, Montana tax $899.52 on $19,160 of taxable income, and net monthly $2,427.57. Total housing is $989.00 or 34.74 percent of gross, DTI is 41.77 percent and cash at signing is $2,443.00.
TC5 – Yellowstone County (Billings), studio, head of household, $75,000 with 1 dependent and $4,000 pre-tax, target rent $904 equal to the area studio Fair Market Rent, landlord requesting a two-month depositBecause Montana places no cap on the deposit, the two-month deposit of $1,808.00 passes through unchanged, bringing cash at signing to $3,662.00. Federal tax $3,581.50 after the $2,000 child tax credit, Social Security $4,650.00, Medicare $1,087.50, Montana tax $2,279.50 on $48,500 of taxable income, net annual $63,167.50 and net monthly $5,263.96. The target is affordable at 16.80 percent of gross and 19.95 percent of net, DTI 24.81 percent, with $3,613.96 discretionary.
Estimates only. Based on HUD fiscal year 2025 Fair Market Rents, tax year 2025 federal and Montana rates, and the Montana Code Annotated as current through 2026. Not legal, tax, or financial advice.

What Is the Montana Rent Calculator?

The Montana Rent Calculator is a rental budgeting and affordability tool for people planning to rent in Montana. It offers three modes: maximum rent supported by income, affordability and approval testing for a specific rent, and required annual salary for a target rent.

The calculator estimates affordable base rent by comparing 30 percent of gross monthly household income, an after-tax monthly budget, and a selected debt-to-income limit. The lowest of those three limits becomes the recommended maximum rent. A separate landlord screening ratio shows whether the household income meets the selected rental qualification rule.

Results also include estimated take-home pay, total housing cost, income requirements, move-in cash, HUD Fair Market Rent comparisons, and a three-year rent projection. These figures help renters compare a listing with their income and expenses, but they do not guarantee landlord approval or predict an exact tax bill.

How the Montana Rent Calculator Formula Works

The calculator begins by combining annual salary with other monthly household income. Other income affects the gross-income affordability tests, but the code does not add it to estimated take-home pay.

G=S+12O12G = \frac{S + 12O}{12}

Here, G is gross monthly household income, S is annual salary, and O is other monthly household income.

Monthly housing add-ons include tenant-paid utilities, renters insurance, pet rent, and parking or storage. If the utilities-included box is selected, the utility amount becomes zero in the calculation.

A=U+I+P+KA = U + I + P + K

The three affordability limits are calculated as follows:

R30=0.30GR_{30} = 0.30G
RDTI=dG−D−AR_{DTI} = dG - D - A
Rbudget=N−D−V−L−AR_{budget} = N - D - V - L - A

d is the selected DTI ceiling, D is monthly debt, V is monthly savings, L is other living expenses, and N is estimated monthly take-home pay. The recommended base rent is the lowest of these three figures, with a floor of zero.

Rmax=max⁡(0,min⁡(R30,RDTI,Rbudget))R_{max} = \max\left(0,\min\left(R_{30},R_{DTI},R_{budget}\right)\right)

The landlord screening ceiling is calculated separately:

Rscreen=GqR_{screen} = \frac{G}{q}

Here, q is the selected 2.5, 3, 3.5, or 4 times monthly rent ratio. This screening figure does not determine the recommended maximum rent.

Worked Example

Consider a single renter earning $60,000 a year with no other income and no pre-tax contribution. Assume $300 in monthly debt, $300 in savings, $1,100 in other living costs, $130 in utilities, $16 in renters insurance, and a 43 percent DTI ceiling.

  1. Gross monthly income is $5,000.
  2. The 30 percent rent limit is $1,500.
  3. Estimated monthly take-home pay is $4,011.13 under the calculator's 2025 tax logic.
  4. Housing add-ons total $146.
  5. The DTI-based rent limit is $1,704.
  6. The after-tax budget rent limit is $2,165.13.

The recommended maximum base rent is therefore $1,500 because the 30 percent rule is the lowest test. Total monthly housing becomes $1,646 after utilities and insurance. That equals 32.92 percent of gross monthly income.

How to Use the Montana Rent Calculator: Step by Step

  1. Choose a calculator mode. You can find your maximum supported rent, test a specific rent, or solve for the salary needed for a target rent.
  2. Select the Montana location and bedroom size. The calculator supports Yellowstone, Cascade, Missoula, Gallatin, and a representative rural Montana option, with studio through four-bedroom HUD rent data.
  3. Enter annual gross household salary and any other monthly household income. Add annual pre-tax retirement contributions if applicable.
  4. Select filing status and enter dependents claimed. The calculator allows 0 to 10 dependents and applies its federal child tax credit logic to the first three.
  5. If using qualification or required-income mode, enter a target monthly base rent greater than zero.
  6. Select the landlord's income ratio and your preferred DTI ceiling. Available DTI limits are 36, 43, and 50 percent.
  7. Enter monthly debt payments, savings, other living expenses, utilities, renters insurance, pet rent, and parking or storage.
  8. Add the requested security deposit, prepaid rent, application fee, moving costs, lease type, and expected annual renewal increase. The increase input accepts 0 to 50 percent.
  9. Check the acknowledgment box and run the calculator.

Maximum-rent mode displays the recommended base rent and its binding test. Qualification mode evaluates the target rent against screening, budget, 30 percent, and DTI measures. Required-income mode uses repeated calculations to find the annual salary that makes the target rent reach the calculator's recommended affordability level.

How to Read Your Montana Rent Calculator Results

Affordability Is Different From Landlord Screening

A landlord's income multiple is treated as a separate approval test. For example, a 3 times monthly rent rule requires annual household income equal to 36 times the monthly rent. The calculator's 30 percent rule requires 40 times monthly rent. A household can therefore pass the 3x screening test while exceeding the calculator's 30 percent standard.

ResultHow the Calculator Uses It
30 percent ruleLimits base rent to 30 percent of gross monthly household income
DTI limitSubtracts debts and housing add-ons from the selected share of gross income
After-tax budgetSubtracts debts, savings, living costs, and housing add-ons from estimated take-home pay
Screening ratioShows a separate landlord qualification ceiling
Recommended rentUses the lowest of the 30 percent, DTI, and budget limits

Base Rent and Total Housing Cost

The recommended result is base rent, not the entire monthly housing bill. The calculator adds tenant-paid utilities, renters insurance, pet rent, and parking to calculate total housing cost. It labels housing below 30 percent of gross income as affordable, 30 through 50 percent as cost-burdened, and above 50 percent as severely cost-burdened.

Move-In Cash and Montana Rules

Move-in cash includes first month's base rent, the selected security deposit, prepaid rent, the application fee, and moving costs. The code contains no visible adult-count input, so the application fee calculation defaults to one adult even though the fee field is labeled per adult.

The calculator models no statewide security-deposit cap. Its legal notes state a 10-day deposit return when there are no deductions and 30 days when deductions are taken. It also models 30 days' advance written notice for a month-to-month rent increase and no increase during a fixed term.

Fair Market Rent and Renewal Projection

For the HUD comparison, the calculator adds tenant-paid utilities to base rent. Insurance, pet rent, and parking are not included in that Fair Market Rent figure. The three-year projection applies the entered renewal increase to Year 2 and compounds it again for Year 3, then adds 12 months of rent for each year.

These results are estimates. The tax engine uses tax year 2025 settings, while the market comparison uses HUD FY 2025 Fair Market Rents stored in the code. Actual taxes, expenses, rental policies, fees, laws, lease terms, and market rents may differ. The calculator is not legal, tax, or financial advice.

Frequently Asked Questions

What rent can I afford in Montana?

The calculator estimates affordable base rent using three limits: 30 percent of gross monthly income, your selected debt-to-income ceiling, and your after-tax monthly budget. The lowest result becomes the recommended maximum. Utilities, renters insurance, pet rent, and parking are then added when the calculator measures total monthly housing cost.

How much income do I need to rent an apartment in Montana?

The required income depends on the rent and the calculation method. Under a 3x landlord screening ratio, annual income equals 36 times monthly rent. Under the calculator's 30 percent gross-income test, annual income equals 40 times monthly rent. Required-income mode also accounts for the DTI and after-tax budget limits.

Is the 3x rent rule the same as the 30 percent rule?

No. A 3x monthly income test allows rent equal to one-third of gross monthly income, which is about 33.33 percent. The calculator's 30 percent test is stricter. A $1,500 monthly rent requires $54,000 in annual income under a 3x screen but $60,000 under the 30 percent rule.

Does the Montana Rent Calculator include taxes?

Yes. The calculator estimates 2025 federal income tax, Social Security, Medicare, Additional Medicare tax, and Montana income tax. Montana taxable income is set equal to federal taxable income and multiplied by 4.7 percent. The model is simplified and does not reproduce every deduction, credit, filing adjustment, or tax situation.

Does the calculator include utilities in affordable rent?

Utilities are treated as a housing add-on rather than part of base rent. They reduce the DTI and after-tax budget rent limits and increase total housing cost. If you check that utilities are included in rent, the calculator treats the entered utility amount as zero. Utilities are also added to base rent for the HUD comparison.

How does the required income calculator work?

Required-income mode repeatedly tests different annual salary amounts until the recommended maximum rent reaches the target rent. The code uses a guarded bisection process with up to 60 upper-bound expansions and 90 iterations. The final required annual salary is rounded up to the next whole dollar before being displayed.

How accurate is the Montana Rent Calculator?

The calculator accurately follows the formulas and data stored in its code, but its result remains an estimate. It uses simplified 2025 tax assumptions, fixed HUD FY 2025 rent tables, user-entered expenses, and selected affordability limits. Actual take-home pay, landlord screening, rent, deposits, fees, legal requirements, and household costs can differ.

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