Montana Child Support Calculator

Free instant estimate based on Montana's Income Shares model (MCA §40-5-209)

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Select a state and enter your monthly gross income to see an estimated child support payment based on net income.

How Montana Calculates Child Support

Montana calculates child support using the Income Shares model as defined in MCA §40-5-209. Both parents' incomes are combined to determine the total support obligation from the Montana child support guidelines table. Each parent's share is then allocated proportionally based on their percentage of the combined income.

Montana considers gross income from all sources, including wages, salaries, commissions, bonuses, self-employment income, rental income, investment income, and Social Security benefits. Health insurance premiums for the child and childcare costs are added to the base obligation. Extraordinary medical expenses are shared proportionally between the parents.

Montana provides a self-support reserve of $1,038 per month (2024) to protect low-income obligors. The state may impute income for parents who are voluntarily underemployed or unemployed, ensuring parents cannot avoid obligations by intentionally earning less. Low-income adjustments are also available for qualifying obligors.

Frequently Asked Questions

How does Montana calculate child support under the Income Shares method?
Montana uses the Income Shares Model under MCA §40-5-209. Both parents' incomes are combined to determine the total support obligation from the state schedule. Each parent's share is then allocated proportionally based on their percentage of the combined income.
What is the self-support reserve in Montana?
Montana's self-support reserve is $1,038 per month (2024). If the obligor parent's income falls near this level, their child support obligation may be reduced to ensure they can meet their own basic living needs.
What counts as income in Montana child support?
Montana considers gross income from all sources including wages, salaries, commissions, bonuses, self-employment income, rental income, investment income, and Social Security benefits.
Does Montana impute income for child support?
Yes. Montana may impute income for parents who are voluntarily underemployed or unemployed. The court can assign an income level based on the parent's earning capacity, work history, and job qualifications.
Can Montana child support be modified?
Yes. Either parent can request a modification if there has been a substantial change in circumstances since the last order, such as a significant change in income, custody arrangements, or the needs of the child.

Important Legal Disclaimer

The information provided on SupportCalc is for general informational and educational purposes only. Nothing on this website should be taken as legal advice. Child support calculations are estimates based on publicly available state guidelines and may not reflect the exact amount ordered by a court. Every case is unique, and many factors can affect the final support order. Please consult with a qualified family law attorney in your jurisdiction for advice specific to your situation.