HowMuchChildSupport

Child support for 4 children in Montana

Montana guidelines effective February 1, 2026. Montana overview

For 4 children, with Parent A earning $60,000 and Parent B $40,000, Montana's guideline amount is $1,200 a month (Parent A pays Parent B).

This is the guideline amount, not a court order.

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Include wages, self-employment, bonuses, and other income the guidelines count.

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Guideline child support

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Child support for 4 children in Montana by income

Monthly guideline amount for 4 children by Parent A's and Parent B's yearly income; the children live mostly with Parent B (Parent A has 52 overnights a year).
Parent A incomeParent B $0Parent B $30,000Parent B $50,000Parent B $80,000
$20,000$136$136$136$136
$25,000$216$216$216$216
$30,000$408$328$256$256
$35,000$724$528$424$368
$40,000$1,036$704$588$512
$45,000$1,260$860$744$660
$50,000$1,376$1,012$880$792
$55,000$1,492$1,148$1,024$920
$60,000$1,600$1,284$1,152$1,056
$65,000$1,696$1,412$1,276$1,184
$70,000$1,796$1,516$1,392$1,288
$75,000$1,888$1,620$1,496$1,392
$80,000$1,972$1,724$1,600$1,496
$90,000$2,148$1,920$1,804$1,700
$100,000$2,316$2,104$2,000$1,896
$120,000$2,660$2,476$2,384$2,276
$150,000$3,156$3,004$2,916$2,820
$200,000$3,992$3,876$3,808$3,724
$250,000$4,812$4,716$4,648$4,584

Parenting time and child support for 4 children

Monthly guideline amount for 4 children by Parent A's income and overnights a year with Parent A; Parent B earns $40,000. "B→A" means Parent B pays.
Parent A income0 nights52 nights104 nights128 nights182 nights
$20,000$136$136$136$80 B→A$716 B→A
$25,000$216$216$216$0$660 B→A
$30,000$280$280$280$60$596 B→A
$35,000$464$464$464$232$464 B→A
$40,000$628$628$628$384$348 B→A
$45,000$784$784$784$528$240 B→A
$50,000$928$928$928$660$144 B→A
$55,000$1,064$1,064$1,064$784$56 B→A
$60,000$1,200$1,200$1,200$908$32
$65,000$1,324$1,324$1,324$1,020$108
$70,000$1,440$1,440$1,440$1,128$184
$75,000$1,544$1,544$1,544$1,220$244
$80,000$1,648$1,648$1,648$1,312$304
$90,000$1,844$1,844$1,844$1,488$416
$100,000$2,040$2,040$2,040$1,660$528
$120,000$2,420$2,420$2,420$2,004$744
$150,000$2,944$2,944$2,944$2,468$1,028
$200,000$3,836$3,836$3,836$3,256$1,508
$250,000$4,676$4,676$4,676$3,996$1,944

How the number of children changes the amount in Montana

With Parent A earning $60,000 and Parent B $40,000, the guideline amount for 4 children is $1,200 a month, about 2.01 times the $598 for one child. Support rises with each child, but by less than the first child's amount, because the guidelines reflect how households share costs among children.

Montana uses a Melson-type formula on yearly amounts. Each parent keeps a personal allowance of $20,748. The children's primary allowance ($6,224 a year for one child) and their expenses are shared by the parents' incomes above the allowance; a standard of living adjustment then adds a share of each parent's remaining income.

Frequently asked questions

How much is child support for 4 children in Montana on $50,000?

If Parent A earns $50,000 a year, Parent B earns $40,000 and the children live mostly with Parent B, Montana's guideline amount is about $928 a month (Parent A pays Parent B).

How much is child support for 4 children in Montana on $100,000?

If Parent A earns $100,000 a year, Parent B earns $40,000 and the children live mostly with Parent B, the guideline amount is about $2,040 a month (Parent A pays Parent B).

How much more is child support for 4 children than for one child in Montana?

At $60,000 (Parent B $40,000), the amount for 4 children is about 2.01 times the amount for one child: $1,200 against $598 a month.

Does equal parenting time change child support for 4 children in Montana?

With about equal parenting time and the same incomes ($60,000 and $40,000), the guideline amount is about $32 a month (Parent A pays Parent B), against $1,200 when Parent A has 52 overnights a year. When the children spend more than 110 days a year with each parent, each parent's amount is reduced for the days above that number and the parent who owes more pays the difference.

Official sources and verification

Guidelines effective February 1, 2026. Verified against the official Montana sources on October 7, 2026. How we calculate →