Cost of Living in Montana for a Family of Four (2026)
A family of four in Montana needs about $7,251 a month ($87,018 a year) to cover a typical household budget before saving. That is 7% below the U.S. average of $7,777 and ranks #30 of 51, where #1 is the most expensive.
Rent is the main reason it costs less. Montana's rent level is 85% of the national average, so a typical three-bedroom rental with utilities runs about $1,718 a month, compared with $2,030 nationally. Everyday goods such as groceries and clothing cost 4% less than the national average, which puts this family's grocery bill at about $1,001 a month on the USDA low-cost food plan.
To cover this budget and still save 15% of take-home pay, a family would need about $8,531 a month after taxes ($102,374 a year).
Monthly budget in Montana by household
The family is two parents aged 38 and 40 with children aged 9 and 4, the youngest in paid childcare, renting a three-bedroom home. The couple is two adults aged 35 and the single adult is 30, each renting a one-bedroom home.
| Category | Family of four | Couple | Single adult |
|---|---|---|---|
| Housing & utilities | $1,718 | $1,123 | $1,123 |
| Groceries | $1,001 | $626 | $342 |
| Dining out & takeout | $250 | $157 | $85 |
| Transportation | $1,179 | $1,179 | $590 |
| Health care | $691 | $454 | $227 |
| Childcare | $1,040 | $0 | $0 |
| Phone & internet | $155 | $155 | $115 |
| Clothing | $209 | $148 | $105 |
| Household & personal care | $242 | $171 | $121 |
| Entertainment & hobbies | $395 | $279 | $197 |
| Gifts, giving & other | $371 | $262 | $185 |
| Total per month | $7,251 | $4,555 | $3,091 |
| Total per year | $87,018 | $54,661 | $37,086 |
Estimates for 2026 from LifeCalculator's family budget model: BEA Regional Price Parities by state (2024, released February 2026), USDA Food Plans: Cost of Food at Home (August 2026, low-cost plan), BLS Consumer Expenditure Survey (2024), Census median gross rent (2024) and Child Care Aware of America (2025). Figures from 2024 are adjusted by about 5% for price changes since. Savings and income taxes are not included.
What moves the number
- Childcare. Paid care for the 4-year-old adds about $1,040 a month. Without it, the family budget falls to about $6,212.
- Housing. The figure assumes renting at the state's typical level. Rents in big cities run well above the state average, and rural areas well below it.
- Cars. Transportation assumes typical costs for two drivers, including a car payment. Families with paid-off cars spend less.
- Price level. Overall, prices in Montana are 5% below the national average (BEA all-items index 94.6).
States with similar costs
- Idaho: $7,386 a month (#27)
- Maine: $7,256 a month (#28)
- Michigan: $7,252 a month (#29)
- North Carolina: $7,193 a month (#31)
- South Carolina: $7,159 a month (#32)
- Wisconsin: $7,093 a month (#33)
See all 50 states and D.C. on the cost of living by state page, or read what it costs a family of four to live in every state.
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