Minnesota Child Support Guidelines: How Support Is Calculated

In Minnesota, child support is set using the income shares model: the court adds both parents' incomes together, figures out what percentage of that combined income each parent contributes, and then splits the basic support obligation in that same proportion. This calculation follows a six-step process set out in Minn. Stat. § 518A.34, and it produces a support order made up of three separate pieces: basic support, medical support, and child care support.

If you're trying to figure out what you might owe or receive, or you think an existing order needs to change, the sections below walk through how the number is built, what counts as income, how parenting time affects the amount, and what it takes to modify an order later.

How Minnesota calculates the basic support amount

Minnesota's formula starts with each parent's gross income and converts it into what the statute calls Parental Income for Determining Child Support, or PICS. The two parents' PICS figures are combined, and each parent's basic support share is proportional to how much of that combined total they earn. This is the "income shares" approach referenced in Minn. Stat. § 518A.34.

Once combined income is known, Minnesota applies a guideline table to determine the presumed basic support obligation. Under Minn. Stat. § 518A.35, subd. 2, the table runs from combined monthly incomes of $0–$1,399 up through $20,000 per month, with separate columns depending on how many children are involved (one through six). At the bottom of the table there is a minimum obligation — around $50 a month for one child — so support doesn't drop to zero just because income is very low. For combined income above $20,000 per month, the presumed basic obligation is capped at the same amount as it would be at exactly $20,000 per month.

Time-sensitive note: guideline tables and dollar thresholds like these are set in statute and are periodically updated by the legislature. Confirm the current table and minimum amount with a Minnesota court or your county child support office before relying on a specific dollar figure.

What counts as income

Under Minn. Stat. § 518A.29, gross income for child support purposes is broad. It includes salaries, wages, commissions, self-employment income, workers' compensation, unemployment benefits, pensions, annuities, Social Security and veterans' benefits, spousal maintenance received, and potential income (income a parent could earn but isn't). It excludes need-based public assistance and the income of either parent's current spouse — a new spouse's paycheck is not counted against you.

How parenting time changes the support amount

Minnesota does not calculate support in a vacuum from custody arrangements — the number of overnights each parent has with the child factors directly into the formula. Under Minn. Stat. § 518A.36, a parenting expense adjustment reduces basic support as a parent's court-ordered parenting time increases, measured by overnights over a calendar year and averaged over two years. In situations where parents have equal parenting time and equal incomes, the formula can result in no basic support obligation being owed at all, unless the parents aren't equally sharing the child's other expenses.

Time-sensitive note: this parenting-time formula was revised effective August 1, 2018. If you're looking at an older worksheet, order, or online calculator that predates that date, the math may not reflect current law — make sure any calculation you rely on uses the current version of the formula.

Medical and child care support

A Minnesota order doesn't just set one lump number — it separately designates basic support, medical support, and child care support as distinct components, according to guidance from the state's Department of Children, Youth, and Families (DCYF), which administers Minnesota's Title IV-D child support program. Parents can open a support case through their local county or tribal child support office, which handles establishment, modification, and enforcement of these orders (Minnesota DCYF — Child Support Guidelines).

Modifying a Minnesota child support order

Support orders aren't necessarily permanent. Under Minn. Stat. § 518A.39, subd. 2, a court can modify an order when circumstances have changed enough to make the current terms unreasonable and unfair. To make that easier to prove, the law creates a rebuttable presumption of a substantial change when recalculating support under the current guidelines would produce an amount that is at least 20% and at least $75 per month higher or lower than the existing order.

Time-sensitive note — this one matters for your wallet: if a modification is granted, it is only retroactive to the date the modification motion was served on the other parent, not back to whenever your circumstances actually changed. In practice, that means waiting to file after a job loss, income change, or shift in parenting time can cost you months of support you might otherwise have been entitled to (or continue to owe you a higher amount than necessary). File promptly once you believe a substantial change has occurred.

Enforcement and interstate cases

Child support enforcement in Minnesota runs on a federal backbone. Federal law (42 U.S.C. §§ 654, 659, 666) requires every state, including Minnesota, to run a Title IV-D enforcement program and to have tools like automatic income withholding, license suspension, and liens available to collect unpaid support. It also allows federal wages and benefits to be garnished for support obligations.

If the other parent lives in a different state, 28 U.S.C. § 1738B requires that state to enforce Minnesota's order and generally bars it from modifying that order on its own — this works together with the Uniform Interstate Family Support Act (UIFSA) framework adopted across the states to determine which state's order controls.

It's also worth knowing that child support obligations generally survive bankruptcy. Under 11 U.S.C. §§ 507 and 523, a "domestic support obligation" such as child support cannot be discharged in bankruptcy and is paid ahead of most other unsecured debts.

What you can do in Minnesota

• Open a case: Contact your county or tribal child support office to open a IV-D case if you don't already have a support order in place.
• Gather income documentation: Pull together pay stubs, tax returns, self-employment records, and documentation of any benefits (Social Security, veterans' benefits, unemployment) for both parents — this is the raw material for the PICS calculation.
• Get the current guideline worksheet: Ask your county child support office or the court for the current Minnesota child support guidelines calculator or worksheet rather than relying on an old form, since the table and parenting-time formula have changed over time.
• Track parenting time accurately: Keep a record of actual overnights, since the parenting expense adjustment depends on overnights measured over time, not just what the parenting plan says on paper.
• Act quickly if circumstances change: If income or parenting time has shifted enough that you think the 20%/$75-per-month threshold is met, file a modification motion as soon as possible — remember, any change is only retroactive to the date the other parent is served.
• Know your interstate rights: If the other parent moves out of state, Minnesota's order generally still controls and other states are required to enforce it under UIFSA and 28 U.S.C. § 1738B.

This article is general information about Minnesota law, not legal advice for your specific situation — talk to a Minnesota family law attorney or your county child support office about your case.