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Montana Child Support Calculator
Montana child support uses Melson Formula. Duration age 18 or HS to 19. Shared custody threshold varies.
Child Support Calculator
Estimate child support payments based on income, custody, and expenses. This tool uses the Income Shares Model common in most states.
Children
Parent 1
Parent 2
Healthcare & Childcare Costs
Additional Expenses
No additional expenses added. Click "Add Expense" to include education, extracurricular, or other costs.
Estimated Child Support Payment
Detailed Breakdown
Parent 1
Parent 2
Important: This calculator provides estimates using a simplified Income Shares Model for educational purposes only. Actual child support calculations vary significantly by state (Montana) and individual circumstances. Courts consider many factors including deviations, caps, and state-specific guidelines. Consult with a family law attorney in Montana for accurate calculations specific to your situation.
Montana Child Support Guidelines
Montana child support calculated using Melson Formula Model. Both parents income considered to determine fair support amount ensuring child needs met.
How Montana Calculates Child Support
Income Calculation: Gross income from all sources including wages bonuses self-employment rental income unemployment disability. Excludes means-tested benefits like SSI TANF food stamps child support received.
Base Obligation: Combine incomes look up base amount on state schedule based on combined income and number of children. Amount prorated between parents based on income percentage.
Additional Costs: Add health insurance premiums covering child, work-related childcare costs, extraordinary medical expenses. Prorate by income share.
Custody Adjustment: Shared parenting time may reduce obligation accounting for direct expenses during custody. Threshold varies by state.
Duration of Support
Montana child support continues until termination conditions met: child reaches age specified in order typically 18 or 19, child graduates high school, child emancipated through marriage military or self-support, child adopted, parent or child dies, court modifies or terminates.
Modification
Can modify with substantial change in circumstances: either parent income changes significantly typically 10-15 percent, change in custody or parenting time, change in health insurance or childcare costs, child needs change, other relevant changes. File motion with court demonstrating change.
Enforcement
Montana enforces through: automatic income withholding from paycheck, tax refund interception federal and state, license suspension driver professional recreational, credit bureau reporting damaging credit score, contempt of court with jail time possible, property liens and bank levies, passport denial for arrears over 2500 dollars.
Self-Employment Income
Self-employed parent income calculated as gross receipts minus ordinary necessary business expenses. Courts scrutinize deductions prevent income manipulation. Personal expenses claimed as business added back. Depreciation often added back as non-cash expense.
Imputed Income
Court can impute income if parent voluntarily unemployed or underemployed without good cause. Based on work history education training, local job market available positions, physical mental ability to work. Good cause includes caring for very young child, verified disability, approved education increasing earning capacity.
Tax Treatment
Child support NOT tax-deductible for payor and NOT taxable for recipient. Paying support does not automatically grant right to claim child as dependent. Custody order or IRS tiebreaker rules determine dependent exemption.
Cost Information
Free Calculator: Montana child support calculator instant estimates. Administrative: Through state agency minimal or no cost. With Divorce: Uncontested 1500-3500 dollars. Contested 5000-15000 dollars plus. Modification: Agreed 500-1500. Contested 2000-8000. Filing Fees: Vary by county typically 150-400 dollars.
Frequently Asked Questions
Q: How is Montana child support calculated? A: Melson Formula Model. Combined parental income determines base from schedule. Amount prorated by income percentage. Add health insurance childcare extraordinary costs.
Q: What income counts? A: All gross income wages bonuses commissions self-employment rental income unemployment disability retirement pensions. Excludes SSI TANF food stamps child support received.
Q: How long does child support last? A: Typically until age 18 or high school graduation whichever later. Some states extend to 19 or 21. Ends earlier if child emancipated.
Q: Can I modify child support? A: Yes with substantial change in circumstances. Income change 10-15 percent plus, custody change, childcare or insurance cost change. File motion with court.
Q: What if custodial parent remarries? A: Remarriage does NOT affect child support. New spouse income not considered. Support continues until termination conditions met.
Q: Is child support taxable? A: No. Not tax-deductible for payor not taxable for recipient. Different from spousal support.
Q: What if payor does not pay? A: State enforcement: income withholding tax intercept license suspension credit reporting contempt jail time passport denial liens.
Q: Does shared custody reduce support? A: Often yes if meets state threshold typically 25-40 percent parenting time. Accounts for expenses during custody. Specific calculation varies.
Q: What about self-employment? A: Gross receipts minus ordinary business expenses. Courts scrutinize deductions prevent manipulation. Personal expenses added back.
Q: Can court impute income? A: Yes if voluntarily unemployed or underemployed without good cause. Based on earning capacity work history education job market.

Madison County Divorce Guide: Circle, Montana Filing

Missoula County Divorce Guide: Missoula, Montana Filing

Musselshell County Divorce Guide: Roundup, Montana Filing

Park County Divorce Guide: Livingston, Montana Filing

Phillips County Divorce Guide: Malta, Montana Filing

Pondera County Divorce Guide: Conrad, Montana Filing

Powell County Divorce Guide: Deer Lodge, Montana Filing

Ravalli County Divorce Guide: Hamilton, Montana Filing

Richland County Divorce Guide: Sidney, Montana Filing

Roosevelt County Divorce Guide: Wolf Point, Montana Filing

Rosebud County Divorce Guide: Forsyth, Montana Filing

Sanders County Divorce Guide: Thompson Falls, Montana Filing

Sheridan County Divorce Guide: Plentywood, Montana Filing

Silver Bow County Divorce Guide: Butte, Montana Filing

Stillwater County Divorce Guide: Columbus, Montana Filing

Sweet Grass County Divorce Guide: Big Timber, Montana Filing

Teton County Divorce Guide: Choteau, Montana Filing

Valley County Divorce Guide: Glasgow, Montana Filing

Yellowstone County Divorce Guide: Billings, Montana Filing

Beaverhead County Divorce Guide: Dillion, Montana Filing

Big Horn County Divorce Guide: Hardin, Montana Filing

Carbon County Divorce Guide: Red Lodge, Montana Filing

Cascade County Divorce Guide: Great Falls, Montana Filing

Custer County Divorce Guide: Miles City, Montana Filing

Dawson County Divorce Guide: Glendive, Montana Filing

Deer Lodge County Divorce Guide: Anaconda, Montana Filing

Flathead County Divorce Guide: Kalispell, Montana Filing

Gallatin County Divorce Guide: Bozeman, Montana Filing

Hill County Divorce Guide: Havre, Montana Filing

Jefferson County Divorce Guide: Boulder, Montana Filing

Lake County Divorce Guide: Polson, Montana Filing

Lewis and Clark County Divorce Guide: Helena, Montana Filing

Liberty County Divorce Guide: Chester, Montana Filing

Lincoln County Divorce Guide: Libby, Montana Filing

Toole County Divorce Guide: Shelby, Montana Filing

Treasure County Divorce Guide: Hysham, Montana Filing

Wheatland County Divorce Guide: Harlowton, Montana Filing

Wibaux County Divorce Guide: Wibaux, Montana Filing

McCone County Divorce Guide: Virginia City, Montana Filing

Meagher County Divorce Guide: White Sulphur, Montana Filing

Mineral County Divorce Guide: Superior, Montana Filing

Petroleum County Divorce Guide: Winnett, Montana Filing

Powder River County Divorce Guide: Broadus, Montana Filing

Prairie County Divorce Guide: Terry, Montana Filing

Blaine County Divorce Guide: Chinook, Montana Filing

Broadwater County Divorce Guide: Townsend, Montana Filing

Carter County Divorce Guide: Ekalaka, Montana Filing

Chouteau County Divorce Guide: Fort Benton, Montana Filing

Daniels County Divorce Guide: Scobey, Montana Filing

Fallon County Divorce Guide: Baker, Montana Filing

Fergus County Divorce Guide: Lewistown, Montana Filing

Garfield County Divorce Guide: Jordan, Montana Filing

Glacier County Divorce Guide: Cut Bank, Montana Filing

Golden Valley County Divorce Guide: Ryegate, Montana Filing

Granite County Divorce Guide: Philipsburg, Montana Filing

Judith Basin County Divorce Guide: Stanford, Montana Filing
Other Articles:

Madison County Divorce Guide: Circle, Montana Filing

Missoula County Divorce Guide: Missoula, Montana Filing

Musselshell County Divorce Guide: Roundup, Montana Filing

Park County Divorce Guide: Livingston, Montana Filing

Phillips County Divorce Guide: Malta, Montana Filing

Pondera County Divorce Guide: Conrad, Montana Filing

Powell County Divorce Guide: Deer Lodge, Montana Filing

Ravalli County Divorce Guide: Hamilton, Montana Filing

Richland County Divorce Guide: Sidney, Montana Filing

Roosevelt County Divorce Guide: Wolf Point, Montana Filing

Rosebud County Divorce Guide: Forsyth, Montana Filing

Sanders County Divorce Guide: Thompson Falls, Montana Filing

Sheridan County Divorce Guide: Plentywood, Montana Filing

Silver Bow County Divorce Guide: Butte, Montana Filing

Stillwater County Divorce Guide: Columbus, Montana Filing

Sweet Grass County Divorce Guide: Big Timber, Montana Filing

Teton County Divorce Guide: Choteau, Montana Filing

Valley County Divorce Guide: Glasgow, Montana Filing

Yellowstone County Divorce Guide: Billings, Montana Filing

Beaverhead County Divorce Guide: Dillion, Montana Filing

Big Horn County Divorce Guide: Hardin, Montana Filing

Carbon County Divorce Guide: Red Lodge, Montana Filing

Cascade County Divorce Guide: Great Falls, Montana Filing

Custer County Divorce Guide: Miles City, Montana Filing

Dawson County Divorce Guide: Glendive, Montana Filing

Deer Lodge County Divorce Guide: Anaconda, Montana Filing

Flathead County Divorce Guide: Kalispell, Montana Filing

Gallatin County Divorce Guide: Bozeman, Montana Filing

Hill County Divorce Guide: Havre, Montana Filing

Jefferson County Divorce Guide: Boulder, Montana Filing

Lake County Divorce Guide: Polson, Montana Filing

Lewis and Clark County Divorce Guide: Helena, Montana Filing

Liberty County Divorce Guide: Chester, Montana Filing

Lincoln County Divorce Guide: Libby, Montana Filing

Toole County Divorce Guide: Shelby, Montana Filing

Treasure County Divorce Guide: Hysham, Montana Filing

Wheatland County Divorce Guide: Harlowton, Montana Filing

Wibaux County Divorce Guide: Wibaux, Montana Filing

McCone County Divorce Guide: Virginia City, Montana Filing

Meagher County Divorce Guide: White Sulphur, Montana Filing

Mineral County Divorce Guide: Superior, Montana Filing

Petroleum County Divorce Guide: Winnett, Montana Filing

Powder River County Divorce Guide: Broadus, Montana Filing

Prairie County Divorce Guide: Terry, Montana Filing

Blaine County Divorce Guide: Chinook, Montana Filing

Broadwater County Divorce Guide: Townsend, Montana Filing

Carter County Divorce Guide: Ekalaka, Montana Filing

Chouteau County Divorce Guide: Fort Benton, Montana Filing

Daniels County Divorce Guide: Scobey, Montana Filing

Fallon County Divorce Guide: Baker, Montana Filing

Fergus County Divorce Guide: Lewistown, Montana Filing

Garfield County Divorce Guide: Jordan, Montana Filing

Glacier County Divorce Guide: Cut Bank, Montana Filing

Golden Valley County Divorce Guide: Ryegate, Montana Filing

Granite County Divorce Guide: Philipsburg, Montana Filing

Judith Basin County Divorce Guide: Stanford, Montana Filing
Other Articles:
RETAINER FEE
PETITION
COURT FILING FEE
SUMMONS
AFFIDAVIT
MOTIONS
ARGUMENTS
TEMPORARY ORDERS
HEARINGS
SUBPOENAS
DEPOSITIONS
SETTLEMENT
CONFERENCES
JUDGEMENT
TRIAL
APPEALS

Real Answers. Real Support.
We're here to guide you through every step of divorce — whether you're just starting to explore your options or ready to take the next step. Our blog offers expert insights, practical tips, and real-life stories to help you move forward with clarity and confidence.
Upfront pricing at a fraction of the cost of traditional divorce
Divorce doesn’t have to cost as much as a car.
Our Services
Paperwork Only
Basic access to divorce paperwork where you handle the rigorous filing process with the court.
POPULAR
We File For You
Our most popular package includes a dedicated case manager, automated court filing, spouse signature collection, and personalized documentation.

Fully Guided
Complete divorce support including mediation sessions, dedicated case management, court filing, and personalized documentation.
We've helped with
over 1 million divorces
We provide everything you need to get divorced — from conflict resolution to filing support and access to divorce experts — in one comprehensive, convenient online platform.
The team at divorce.com was responsive and helpful during a difficult process. I would highly recommend the site for uncomplicated, amicable divorces!!
Jen B.
I came across this online. So I checked on it. It was easy and affordable. I wish I would have found this years ago.
Brandy D.
I was able to read it easily. Thanks God for this service. I will recommend it to anyone who asks this is a very easy step to do. I love it please try it you won't be disappointed
Dianna R.
Great customer service. Questions were easy to answer and had descriptions to understand the questions.
Andelain R.
Proudly featured in these publications

"The Most Trusted
Name in Online Divorce"
Exclusive
Online Divorce Partner
Best
Online Divorce Service
ADVISOR
We offer a guided path through divorce that helps avoid unnecessary conflict and costs.

Written By:
Divorce.com Staff
Montana Child Support Calculator
Montana child support uses Melson Formula. Duration age 18 or HS to 19. Shared custody threshold varies.
Child Support Calculator
Estimate child support payments based on income, custody, and expenses. This tool uses the Income Shares Model common in most states.
Children
Parent 1
Parent 2
Healthcare & Childcare Costs
Additional Expenses
No additional expenses added. Click "Add Expense" to include education, extracurricular, or other costs.
Estimated Child Support Payment
Detailed Breakdown
Parent 1
Parent 2
Important: This calculator provides estimates using a simplified Income Shares Model for educational purposes only. Actual child support calculations vary significantly by state (Montana) and individual circumstances. Courts consider many factors including deviations, caps, and state-specific guidelines. Consult with a family law attorney in Montana for accurate calculations specific to your situation.
Montana Child Support Guidelines
Montana child support calculated using Melson Formula Model. Both parents income considered to determine fair support amount ensuring child needs met.
How Montana Calculates Child Support
Income Calculation: Gross income from all sources including wages bonuses self-employment rental income unemployment disability. Excludes means-tested benefits like SSI TANF food stamps child support received.
Base Obligation: Combine incomes look up base amount on state schedule based on combined income and number of children. Amount prorated between parents based on income percentage.
Additional Costs: Add health insurance premiums covering child, work-related childcare costs, extraordinary medical expenses. Prorate by income share.
Custody Adjustment: Shared parenting time may reduce obligation accounting for direct expenses during custody. Threshold varies by state.
Duration of Support
Montana child support continues until termination conditions met: child reaches age specified in order typically 18 or 19, child graduates high school, child emancipated through marriage military or self-support, child adopted, parent or child dies, court modifies or terminates.
Modification
Can modify with substantial change in circumstances: either parent income changes significantly typically 10-15 percent, change in custody or parenting time, change in health insurance or childcare costs, child needs change, other relevant changes. File motion with court demonstrating change.
Enforcement
Montana enforces through: automatic income withholding from paycheck, tax refund interception federal and state, license suspension driver professional recreational, credit bureau reporting damaging credit score, contempt of court with jail time possible, property liens and bank levies, passport denial for arrears over 2500 dollars.
Self-Employment Income
Self-employed parent income calculated as gross receipts minus ordinary necessary business expenses. Courts scrutinize deductions prevent income manipulation. Personal expenses claimed as business added back. Depreciation often added back as non-cash expense.
Imputed Income
Court can impute income if parent voluntarily unemployed or underemployed without good cause. Based on work history education training, local job market available positions, physical mental ability to work. Good cause includes caring for very young child, verified disability, approved education increasing earning capacity.
Tax Treatment
Child support NOT tax-deductible for payor and NOT taxable for recipient. Paying support does not automatically grant right to claim child as dependent. Custody order or IRS tiebreaker rules determine dependent exemption.
Cost Information
Free Calculator: Montana child support calculator instant estimates. Administrative: Through state agency minimal or no cost. With Divorce: Uncontested 1500-3500 dollars. Contested 5000-15000 dollars plus. Modification: Agreed 500-1500. Contested 2000-8000. Filing Fees: Vary by county typically 150-400 dollars.
Frequently Asked Questions
Q: How is Montana child support calculated? A: Melson Formula Model. Combined parental income determines base from schedule. Amount prorated by income percentage. Add health insurance childcare extraordinary costs.
Q: What income counts? A: All gross income wages bonuses commissions self-employment rental income unemployment disability retirement pensions. Excludes SSI TANF food stamps child support received.
Q: How long does child support last? A: Typically until age 18 or high school graduation whichever later. Some states extend to 19 or 21. Ends earlier if child emancipated.
Q: Can I modify child support? A: Yes with substantial change in circumstances. Income change 10-15 percent plus, custody change, childcare or insurance cost change. File motion with court.
Q: What if custodial parent remarries? A: Remarriage does NOT affect child support. New spouse income not considered. Support continues until termination conditions met.
Q: Is child support taxable? A: No. Not tax-deductible for payor not taxable for recipient. Different from spousal support.
Q: What if payor does not pay? A: State enforcement: income withholding tax intercept license suspension credit reporting contempt jail time passport denial liens.
Q: Does shared custody reduce support? A: Often yes if meets state threshold typically 25-40 percent parenting time. Accounts for expenses during custody. Specific calculation varies.
Q: What about self-employment? A: Gross receipts minus ordinary business expenses. Courts scrutinize deductions prevent manipulation. Personal expenses added back.
Q: Can court impute income? A: Yes if voluntarily unemployed or underemployed without good cause. Based on earning capacity work history education job market.
RETAINER FEE
PETITION
COURT FILING FEE
SUMMONS
AFFIDAVIT
MOTIONS
ARGUMENTS
TEMPORARY ORDERS
HEARINGS
SUBPOENAS
DEPOSITIONS
SETTLEMENT
CONFERENCES
JUDGEMENT
TRIAL
APPEALS


RETAINER FEE
PETITION
COURT FILING FEE
SUMMONS
AFFIDAVIT
MOTIONS
ARGUMENTS
TEMPORARY ORDERS
HEARINGS
SUBPOENAS
DEPOSITIONS
SETTLEMENT
CONFERENCES
JUDGEMENT
TRIAL
APPEALS


Other Articles:

Madison County Divorce Guide: Circle, Montana Filing

Missoula County Divorce Guide: Missoula, Montana Filing

Musselshell County Divorce Guide: Roundup, Montana Filing

Park County Divorce Guide: Livingston, Montana Filing

Phillips County Divorce Guide: Malta, Montana Filing

Pondera County Divorce Guide: Conrad, Montana Filing

Powell County Divorce Guide: Deer Lodge, Montana Filing

Ravalli County Divorce Guide: Hamilton, Montana Filing

Richland County Divorce Guide: Sidney, Montana Filing

Roosevelt County Divorce Guide: Wolf Point, Montana Filing

Rosebud County Divorce Guide: Forsyth, Montana Filing

Sanders County Divorce Guide: Thompson Falls, Montana Filing

Sheridan County Divorce Guide: Plentywood, Montana Filing

Silver Bow County Divorce Guide: Butte, Montana Filing

Stillwater County Divorce Guide: Columbus, Montana Filing

Sweet Grass County Divorce Guide: Big Timber, Montana Filing

Teton County Divorce Guide: Choteau, Montana Filing

Valley County Divorce Guide: Glasgow, Montana Filing

Yellowstone County Divorce Guide: Billings, Montana Filing

Beaverhead County Divorce Guide: Dillion, Montana Filing

Big Horn County Divorce Guide: Hardin, Montana Filing

Carbon County Divorce Guide: Red Lodge, Montana Filing

Cascade County Divorce Guide: Great Falls, Montana Filing

Custer County Divorce Guide: Miles City, Montana Filing

Dawson County Divorce Guide: Glendive, Montana Filing

Deer Lodge County Divorce Guide: Anaconda, Montana Filing

Flathead County Divorce Guide: Kalispell, Montana Filing

Gallatin County Divorce Guide: Bozeman, Montana Filing

Hill County Divorce Guide: Havre, Montana Filing

Jefferson County Divorce Guide: Boulder, Montana Filing

Lake County Divorce Guide: Polson, Montana Filing

Lewis and Clark County Divorce Guide: Helena, Montana Filing

Liberty County Divorce Guide: Chester, Montana Filing

Lincoln County Divorce Guide: Libby, Montana Filing

Toole County Divorce Guide: Shelby, Montana Filing

Treasure County Divorce Guide: Hysham, Montana Filing

Wheatland County Divorce Guide: Harlowton, Montana Filing

Wibaux County Divorce Guide: Wibaux, Montana Filing

McCone County Divorce Guide: Virginia City, Montana Filing

Meagher County Divorce Guide: White Sulphur, Montana Filing

Mineral County Divorce Guide: Superior, Montana Filing

Petroleum County Divorce Guide: Winnett, Montana Filing

Powder River County Divorce Guide: Broadus, Montana Filing

Prairie County Divorce Guide: Terry, Montana Filing

Blaine County Divorce Guide: Chinook, Montana Filing

Broadwater County Divorce Guide: Townsend, Montana Filing

Carter County Divorce Guide: Ekalaka, Montana Filing

Chouteau County Divorce Guide: Fort Benton, Montana Filing

Daniels County Divorce Guide: Scobey, Montana Filing

Fallon County Divorce Guide: Baker, Montana Filing

Fergus County Divorce Guide: Lewistown, Montana Filing

Garfield County Divorce Guide: Jordan, Montana Filing

Glacier County Divorce Guide: Cut Bank, Montana Filing

Golden Valley County Divorce Guide: Ryegate, Montana Filing

Granite County Divorce Guide: Philipsburg, Montana Filing

Judith Basin County Divorce Guide: Stanford, Montana Filing
Upfront pricing at a fraction of the cost of traditional divorce
Divorce doesn’t have to cost as much as a car.
Real Answers. Real Support.
We're here to guide you through every step of divorce — whether you're just starting to explore your options or ready to take the next step. Our blog offers expert insights, practical tips, and real-life stories to help you move forward with clarity and confidence.
Our Services
Paperwork Only
Basic access to divorce paperwork where you handle the rigorous filing process with the court.
POPULAR
We File For You
Our most popular package includes a dedicated case manager, automated court filing, spouse signature collection, and personalized documentation.

Fully Guided
Complete divorce support including mediation sessions, dedicated case management, court filing, and personalized documentation.
We've helped with
over 1 million divorces
We provide everything you need to get divorced — from conflict resolution to filing support and access to divorce experts — in one comprehensive, convenient online platform.
The team at divorce.com was responsive and helpful during a difficult process. I would highly recommend the site for uncomplicated, amicable divorces!!
Jen B.
I came across this online. So I checked on it. It was easy and affordable. I wish I would have found this years ago.
Brandy D.
I was able to read it easily. Thanks God for this service. I will recommend it to anyone who asks this is a very easy step to do. I love it please try it you won't be disappointed
Dianna R.
Great customer service. Questions were easy to answer and had descriptions to understand the questions.
Andelain R.
Proudly featured in these publications







