Minnesota uses an income shares model under Minn. Stat. § 518A.35 to calculate child support, combining both parents' gross incomes to determine a basic support obligation that is then divided proportionally. The state's official child support calculator, maintained by the Minnesota Department of Human Services, applies these guidelines for up to 6 joint children with combined parental incomes up to $20,000 per month. Filing for child support in Minnesota costs $390 in base court fees, with county law library surcharges bringing most totals to $400 to $425. Understanding how to use the Minnesota child support calculator correctly requires knowing what counts as income, how parenting time reduces the obligation, and what additional costs for medical care and childcare are factored into the final order.
| Key Fact | Detail |
|---|---|
| Governing Statute | Minn. Stat. Chapter 518A |
| Calculation Model | Income Shares (both parents' incomes) |
| Filing Fee | $390 base; $400 to $425 with county law library fees |
| Residency Requirement | 180 days in Minnesota (Minn. Stat. § 518.07) |
| Grounds for Divorce | No-fault only: irretrievable breakdown (Minn. Stat. § 518.06) |
| Waiting Period | None for standard dissolution; 30 days for summary dissolution |
| Property Division | Equitable distribution |
| Income Cap | $20,000 combined monthly parental income |
| Official Calculator | childsupportcalculator.dhs.state.mn.us |
How Minnesota's Income Shares Model Works
Minnesota calculates child support by combining both parents' monthly gross incomes into a single figure called Parental Income for Determining Child Support (PICS), then referencing a statutory guidelines table under Minn. Stat. § 518A.35 to find the basic support obligation for the number of joint children. Each parent pays a proportionate share of that obligation based on their percentage of the combined income. For example, if Parent A earns $6,000 per month and Parent B earns $4,000 per month, the combined PICS is $10,000, and Parent A is responsible for 60% of the basic support obligation while Parent B covers 40%.
The income shares model replaced Minnesota's older percentage-of-income approach effective January 1, 2007. Under Minn. Stat. § 518A.34, courts must compute each parent's gross income, subtract allowable deductions for nonjoint children under Minn. Stat. § 518A.33, and arrive at each parent's PICS as defined by Minn. Stat. § 518A.26. The noncustodial parent (obligor) then pays their proportionate share minus any parenting expense adjustment to the custodial parent (obligee). Minnesota courts treat the guidelines amount as a rebuttable presumption, meaning the court will order the guidelines amount unless a party demonstrates that deviation is warranted under Minn. Stat. § 518A.43.
Step-by-Step Guide to Using the Minnesota Child Support Calculator
The official Minnesota child support calculator at childsupportcalculator.dhs.state.mn.us produces an estimated basic support amount by applying the statutory guidelines to the income and parenting time data you enter. The calculator handles up to 6 joint children and caps combined income at $20,000 per month. Follow these steps to generate an accurate estimate of what the court may order.
Step 1: Gather Income Documentation
Before using the child support calculator Minnesota provides online, collect the following for both parents:
- Last 2 years of federal tax returns (Form 1040)
- Most recent 3 months of pay stubs
- Documentation of self-employment income, if applicable (Minn. Stat. § 518A.30)
- Records of overtime, bonuses, and commissions
- Social Security, disability, or veterans benefit statements
- Unemployment or workers' compensation benefit letters
- Spousal maintenance received from a prior or current proceeding
- Investment income statements (dividends, interest, rental income)
Step 2: Calculate Each Parent's Gross Income
Under Minn. Stat. § 518A.29, gross income includes all periodic payments: wages, salaries, commissions, self-employment earnings, workers' compensation, unemployment benefits, pensions, annuities, Social Security benefits, spousal maintenance received, and military retirement pay. Minnesota courts may also impute potential income under Minn. Stat. § 518A.32 if a parent is voluntarily unemployed or underemployed. Potential income is based on the parent's probable earnings considering their work history, education, occupational qualifications, and local job availability.
Step 3: Determine PICS for Each Parent
Parental Income for Determining Child Support (PICS) equals gross income minus any court-ordered support obligations for nonjoint children under Minn. Stat. § 518A.33. If Parent A pays $500 per month in support for a child from a prior relationship, that $500 is subtracted from Parent A's gross income before calculating their PICS. Enter each parent's resulting PICS into the calculator.
Step 4: Enter the Number of Joint Children
The Minnesota child support calculator worksheet allows entries for 1 through 6 joint children. Each additional child increases the basic support obligation. For proceedings involving more than 6 children, the court derives the amount without the guidelines table but must still follow the principles of Minn. Stat. § 518A.35.
Step 5: Enter Parenting Time Percentages
The calculator applies the parenting expense adjustment under Minn. Stat. § 518A.36, which reduces the obligor's basic support based on overnights spent with the child. Parenting time is calculated as a percentage of overnights over a 2-year period. Under the formula updated in 2018, each additional overnight produces an incremental adjustment rather than requiring threshold brackets. Enter the number of court-ordered overnights for each parent, and the calculator converts this into the parenting expense adjustment automatically.
Step 6: Review the Basic Support Amount
The calculator outputs the presumptive basic support obligation for each parent. This amount reflects only basic support. Medical support and childcare support are calculated separately. The total child support order consists of basic support, medical support, and childcare support combined.
What Counts as Gross Income for the Child Support Worksheet
Minnesota defines gross income broadly under Minn. Stat. § 518A.29 to include virtually all sources of periodic payment. Wages and salary account for the majority of income in most cases, but Minnesota courts also count commissions, bonuses, overtime pay, self-employment net income under Minn. Stat. § 518A.30, workers' compensation benefits, unemployment insurance, pension and retirement disbursements, Social Security benefits, disability payments, spousal maintenance received, military pay and allowances, trust income, and annuities. Capital gains, while not periodic, may be included if they recur regularly.
Minnesota courts exclude means-tested public assistance benefits (MFIP, SNAP, SSI) from gross income calculations. Child support received for nonjoint children is also excluded. If a parent receives Social Security or veterans benefits on behalf of a joint child due to the obligor's disability or retirement, those benefits are credited toward the obligor's support obligation under Minn. Stat. § 518A.31.
| Income Type | Included in Gross Income? | Statute Reference |
|---|---|---|
| Wages, salary, tips | Yes | § 518A.29 |
| Self-employment net income | Yes | § 518A.30 |
| Overtime, bonuses, commissions | Yes | § 518A.29 |
| Unemployment benefits | Yes | § 518A.29 |
| Workers' compensation | Yes | § 518A.29 |
| Social Security / VA benefits | Yes (credited to obligor) | § 518A.31 |
| Pension / retirement pay | Yes | § 518A.29 |
| Spousal maintenance received | Yes | § 518A.29 |
| MFIP, SNAP, SSI | No | § 518A.29 |
| Imputed potential income | Yes (if voluntarily underemployed) | § 518A.32 |
The Parenting Expense Adjustment Explained
Minnesota's parenting expense adjustment (PEA) under Minn. Stat. § 518A.36 reduces the obligor's basic child support obligation based on the percentage of court-ordered parenting time the obligor exercises. The adjustment reflects the presumption that a parent incurs direct costs for housing, food, clothing, transportation, and recreation while the child is in their care. Since the 2018 revision, the PEA uses a continuous formula that adjusts incrementally for each overnight rather than relying on fixed percentage brackets.
The parenting time percentage is calculated by dividing the obligor's annual court-ordered overnights by 365, then averaging over a 2-year period. A parent with 130 overnights per year has approximately 35.6% parenting time. The adjustment formula uses each parent's basic support obligation and parenting time percentage to determine which parent owes support and the net amount. In cases of equal parenting time (50/50 or 182.5 overnights each), the higher-income parent typically pays the difference between the two parents' proportionate obligations. The child support estimator provided by Minnesota DHS handles this calculation automatically when you enter overnight counts.
Medical Support and Childcare Obligations
Minnesota child support orders include 3 separate components: basic support, medical support under Minn. Stat. § 518A.41, and childcare support under Minn. Stat. § 518A.40. The official child support calculator Minnesota hosts online addresses basic support only. Medical and childcare amounts require additional calculations.
Medical support covers the cost of health insurance premiums and unreimbursed medical expenses for joint children. The court assigns responsibility for maintaining health insurance based on availability and cost-effectiveness. Each parent's share of unreimbursed medical expenses is proportional to their share of combined PICS. If both parents owe medical support to each other, the court offsets the obligations and orders the parent with the higher amount to pay the difference.
Childcare support covers work-related or education-related childcare costs. Under Minn. Stat. § 518A.40, the total childcare expense is divided between parents based on their proportionate share of combined PICS. The amount is adjusted by the estimated federal and state child care credits the custodial parent receives. Average childcare costs in Minnesota range from $800 to $1,400 per month per child for full-time care, depending on the child's age and geographic area.
When Courts Deviate from the Guidelines
Minnesota courts may deviate from the child support calculator guidelines amount when strict application would be unjust or inappropriate. Under Minn. Stat. § 518A.43, the court must consider specific factors before ordering a deviation, and the deviation must serve the best interests of the child. Common deviation factors include:
- The financial resources and needs of the child beyond what the guidelines address
- The standard of living the child would have enjoyed had the marriage continued
- The physical, emotional, and educational needs of the child
- Combined parental income exceeding $20,000 per month, where the court may set a higher obligation
- The self-support reserve, which protects low-income obligors by ensuring they retain at least 130% of the federal poverty guideline for one person ($1,565 per month as of 2025)
- A parent's receipt of public assistance
- Extraordinary medical or educational expenses for the child
The court must make written findings explaining why the deviation serves the child's best interests and how the guidelines amount is unreasonable. Both parents may agree to a deviation, but the court retains authority to reject agreements that do not adequately support the child.
How to Modify a Minnesota Child Support Order
Minnesota allows modification of child support orders when there is a substantial change in circumstances under Minn. Stat. § 518A.39. A modification is presumed appropriate if the existing order differs from the current guidelines amount by at least 20% and $75 per month. As of 2025, courts are also encouraged to approve modifications when a parent's income changes by more than 10% or when parenting time shifts substantially. Either parent can file a motion to modify, and the modification takes effect from the date the motion is served, not retroactively.
Common grounds for modification include job loss, significant pay increase or decrease, remarriage or new children, changes in the child's needs (such as special education or medical treatment), and substantial changes in parenting time. The self-support reserve of 130% of the federal poverty guideline also applies to modification proceedings, ensuring that obligors with very low incomes retain enough to meet basic living expenses. Effective January 1, 2025, Social Security or veterans benefits received by the obligee for the benefit of a joint child based on the obligor's disability may be applied to satisfy arrears when a motion to modify is filed.
Filing for Child Support in Minnesota: Costs and Process
Filing for child support as part of a divorce proceeding in Minnesota costs $390 in base fees ($340 court fee plus $50 surcharge), with most counties adding a law library fee that brings the total to between $400 and $425. As of March 2026, Hennepin County charges $402 total. Verify the exact amount with your county's district court clerk, as law library fees vary. Fee waivers are available for parents who cannot afford filing costs through the In Forma Pauperis process.
To establish child support, at least one parent must have resided in Minnesota for a minimum of 180 days (approximately 6 months) under Minn. Stat. § 518.07. Child support can be established through a divorce proceeding, a standalone child support petition, or a paternity action. In all cases, the court applies the same guidelines under Minn. Stat. § 518A.35 and the same calculator methodology.
2025 to 2026 Changes Affecting Minnesota Child Support
Minnesota updated several child support provisions effective in 2025 that directly affect how the child support calculator Minnesota parents use produces results. The self-support reserve increased to 130% of the federal poverty guideline for one person, set at $1,565 per month in 2025. This provides greater protection for low-income obligors by ensuring they retain enough income to cover basic needs before child support is assessed. Courts are now more receptive to modification motions when income changes by more than 10%, lowering the practical barrier to adjusting outdated orders.
The 2024 legislative session addressed equal shared parenting time provisions under House File 3204, clarifying how the parenting expense adjustment applies when parents share overnights equally. Minnesota's child support calculator was updated accordingly to reflect these refinements. Additional 2025 changes addressed wage garnishment limitations under Minn. Stat. § 518A.53, refining the rules governing how much of a parent's earnings can be levied for child support enforcement.
Frequently Asked Questions
How does the Minnesota child support calculator determine the basic obligation amount?
The Minnesota child support calculator uses the income shares model under Minn. Stat. § 518A.35 by combining both parents' Parental Income for Determining Child Support (PICS), referencing the statutory guidelines table for the number of joint children, and dividing the resulting obligation proportionally based on each parent's share of combined income. The combined income cap is $20,000 per month.
What income is included when you calculate child support in Minnesota?
Minnesota includes all forms of periodic payment as gross income under Minn. Stat. § 518A.29: wages, salaries, commissions, self-employment income, unemployment and workers' compensation benefits, pensions, Social Security, spousal maintenance received, and military pay. Courts may also impute potential income under Minn. Stat. § 518A.32 for voluntarily unemployed or underemployed parents based on work history and local job availability.
How does parenting time affect child support in Minnesota?
The parenting expense adjustment under Minn. Stat. § 518A.36 reduces the obligor's basic support based on court-ordered overnights. Since the 2018 update, each overnight incrementally reduces the obligation rather than requiring parents to cross fixed threshold brackets. A parent with 130 overnights (35.6% parenting time) receives a proportional reduction. In 50/50 arrangements, the higher-income parent pays the net difference.
What is the filing fee for child support in Minnesota?
The base filing fee for a dissolution proceeding that includes child support is $390 ($340 court fee plus $50 surcharge) as of March 2026. County law library fees add $10 to $35, bringing most county totals to $400 to $425. Hennepin County charges $402. Fee waivers are available through the In Forma Pauperis process for parents who cannot afford the cost. Verify with your local clerk.
Can Minnesota courts order child support above the $20,000 monthly income cap?
Yes. Under Minn. Stat. § 518A.43, the presumptive guidelines apply up to $20,000 per month in combined PICS. For incomes exceeding that cap, the court may order additional support if a party demonstrates the child's needs justify it, considering the standard of living the child would have enjoyed and extraordinary expenses such as private education or specialized medical care.
How do I modify a child support order in Minnesota?
File a motion to modify under Minn. Stat. § 518A.39 when there is a substantial change in circumstances. A modification is presumed appropriate if the current guidelines amount differs from the existing order by at least 20% and $75 per month. As of 2025, courts are encouraged to approve modifications when income changes by more than 10%. The modification is effective from the date the motion is served.
Does Minnesota impute income to a parent who is not working?
Yes. Under Minn. Stat. § 518A.32, if a parent is voluntarily unemployed or underemployed, the court may impute potential income based on the parent's employment history, education, occupational qualifications, prevailing wages in the community, and job availability. The child support calculator Minnesota provides online allows you to enter imputed income as gross income when running your estimate.
What is the self-support reserve in Minnesota child support?
The self-support reserve ensures that a low-income obligor retains enough income to meet basic needs. As of 2025, the reserve is set at 130% of the federal poverty guideline for one person, which equals $1,565 per month. If paying the full guidelines amount would reduce the obligor's income below this threshold, the court reduces the support obligation accordingly under the guidelines.
Are childcare and medical costs included in the basic child support amount?
No. Basic support, medical support, and childcare support are 3 separate components of a Minnesota child support order. The official calculator addresses basic support only. Medical support under Minn. Stat. § 518A.41 covers insurance premiums and unreimbursed medical costs. Childcare support under Minn. Stat. § 518A.40 covers work-related or education-related childcare, adjusted for federal and state child care tax credits.
How long does child support last in Minnesota?
Minnesota child support obligations generally continue until the child turns 18 or completes secondary school, whichever occurs later, but not beyond age 20. If the child is still attending secondary school at age 18, support continues until graduation or age 20. Support may also terminate upon the child's marriage, emancipation, or entry into military service. The court may extend support for a child with a disability that existed before age 18.