Montana Child Support Resources

FamilyCourtHelp is an independent educational platform. It is not a court, law firm, government agency, or government partner. We organize and link to publicly available resources published by courts and government agencies. Official requirements may change. Always confirm current requirements with the applicable court or clerk.

Montana sets child support with a written guideline, and the official worksheet is how the math gets shown to the judge. Both parents' income normally goes into the calculation, along with things like health insurance for the children and child care costs.

The official guideline materials for Montana are linked below, together with the verified support documents and the financial paperwork the court usually asks both sides to file. Our own calculator can give you a working estimate before you fill in the official worksheet.

Official Montana child support resources

Official links below open in a new tab. You are leaving FamilyCourtHelp and opening an external government or court website.

Montana child support guideline resources (courts.mt.gov): Official Montana child support guideline materials, worksheets, or calculators. https://dphhs.mt.gov/csed/financialforms

Montana financial affidavit and disclosure forms (courts.mt.gov): The official source for the financial disclosure paperwork most Montana family cases ask both sides to complete. https://courts.mt.gov/forms

Montana family law forms (official index) (Montana judicial branch): The official statewide collection of Montana family law forms. When a direct document link stops working, this index is where the current version lives. https://courts.mt.gov/forms

Montana court self-help resources (Montana courts self-help): Official self-help information for people handling their own Montana family case, including instructions and plain-language guides. https://www.montanalawhelp.org

Montana Courts Electronic Filing (Tyler Technologies): Montana's e-filing system keeps adding courts, but it is attorney-only. The courts say plainly that e-filing is not available to self-represented litigants right now, so you file family court papers on paper or by mail with your clerk of district court. https://mtefile.courts.mt.gov/login

Verified official Montana support documents

These official documents are the worksheets and orders Montana uses to set and record child support.

Child Support Affidavit (Child Support), official document: https://dphhs.mt.gov/assets/cssd/financialaffidavit.pdf

Official link data for Montana was last verified June 2026. Report anything outdated through our contact page and we will re-check the official source.

Frequently asked questions

How is child support calculated in Montana?

Through the state's written guideline, applied on the official worksheet. The guideline uses income and a defined list of add-ons rather than a judge's rough guess, so filling the worksheet in honestly is the single most useful thing you can do. Open the official Montana guideline materials above for the exact method.

Can the court order a different amount than the guideline?

A judge can depart from the guideline in some situations, but the order normally has to explain why. Start from the guideline number and be ready to say plainly what makes your case different.

How much does it cost to file a family case in Montana?

Dissolution filing fee: ~$170. If you cannot afford the fee, ask the clerk about a fee waiver or indigency application; every state has a process for requesting one.