Support in Kansas (2026)

The 35% Parenting Time Adjustment

One of the most important features of Kansas’s child support framework is its parenting time adjustment. When the non-residential parent exercises 35% or more of the annual overnights (approximately 128 nights), the Kansas Child Support Guidelines reduce the support obligation to reflect the direct costs — food, utilities, transportation, activities — that the non-residential parent incurs during their parenting time.

This threshold is significant because it creates a clear incentive for parents to maximize involvement: once a parent crosses the 35% overnight mark, the child support calculation shifts meaningfully. For parents negotiating parenting time schedules, this adjustment is a practical consideration that intersects directly with their financial obligations.

How Kansas Calculates Child Support

Kansas uses an income shares model to determine child support obligations. The Kansas Child Support Guidelines, adopted by the Kansas Supreme Court under Administrative Order No. 307 and codified under K.S.A. Section 23-3001 et seq., are based on the principle that a child should receive the same proportion of parental income that the child would have received if the parents lived together.

The calculation follows these steps:

1. Determine domestic gross income. Each parent’s domestic gross income is calculated, including wages, salaries, commissions, bonuses, pensions, Social Security, disability payments, workers’ compensation, unemployment benefits, investment income, and trust income.
2. Apply adjustments. Certain deductions are made, including maintenance paid to a former spouse, support for other children, and work-related child care costs.
3. Combine adjusted incomes. The parents’ combined adjusted incomes form the basis for the calculation.
4. Consult the support schedule. The combined adjusted income is applied to the child support schedule, which produces a total support obligation based on the number of children.
5. Apportion proportionally. Each parent’s share is proportional to their percentage of the combined income. The non-residential parent typically pays their share to the residential parent.

For a broader explanation of how income shares models work, see our guide on how child support is calculated. You can also estimate your potential obligation with our child support calculator.

The 10% Modification Threshold

Kansas has a specific, quantifiable threshold for child support modification. Under the Kansas guidelines, a change of 10% or more in either parent’s income may constitute grounds for modification. This concrete benchmark — rather than the vague “substantial change” standard used by many states — gives parents a clearer signal about when a modification request is likely to succeed.

Beyond income changes, modification may also be warranted by changes in parenting time, a child’s special needs, or changes in the cost of health insurance. All modifications take effect from the date the motion is filed. Kansas does not allow retroactive modification of child support arrearages.

Child Support Duration

In Kansas, child support generally continues until the child reaches age 18. However, if the child is still attending high school at age 18, support continues until the child graduates or turns 19, whichever occurs first. The parties may agree to extend support for post-secondary education, but the court cannot order it absent an agreement. This is a meaningful distinction from states that can mandate college support.

Enforcement of Child Support

Kansas enforces child support orders through the Kansas Department for Children and Families (DCF), Child Support Services division. Enforcement methods include:

• Income withholding (wage garnishment)
• Interception of state and federal tax refunds
• Suspension of driver’s, professional, and recreational licenses
• Contempt of court proceedings
• Liens on real and personal property
• Denial of passport applications for arrearages exceeding $2,500
• Credit bureau reporting

Kansas participates in interstate enforcement through the Uniform Interstate Family Support Act (UIFSA) for cases involving parents in different states.

The 121-Month Maintenance Cap

Kansas’s approach to spousal maintenance is shaped by its distinctive statutory cap. Under K.S.A. Section 23-2904, Kansas limits the duration of maintenance to a maximum of 121 months — approximately 10 years. This hard cap applies regardless of the length of the marriage, distinguishing Kansas from states that permit indefinite or permanent maintenance for long marriages.

Maintenance may be paid in monthly installments or as a lump sum. The court considers the following factors:

• The age and physical and emotional condition of the parties
• The duration of the marriage
• The standard of living established during the marriage
• The ability of the supported party to become self-supporting and the time and expense required for training or education
• The property awarded to each party
• The earning capacity of each party

Maintenance terminates upon the death of either party, the remarriage of the recipient, or the establishment of a cohabitation arrangement that reduces the recipient’s financial need.

Interplay Between Property Division and Maintenance

Because Kansas courts can divide all property owned by either spouse (not just marital property) under K.S.A. Section 23-2802, the property division stage of a divorce directly affects whether maintenance is necessary and, if so, for how long. A generous property award may reduce or eliminate the need for ongoing maintenance, particularly given the 121-month cap. Conversely, when property is limited, the court may award maintenance closer to the maximum duration.

This interplay means that property division and maintenance should be analyzed together, not in isolation. A strategy that focuses on one without considering the other can lead to suboptimal outcomes.

When to Seek Legal Guidance

Kansas child support and maintenance laws involve specific guidelines, thresholds, and caps that can significantly affect the outcome of your case. The 35% parenting time adjustment, the 10% modification threshold, and the 121-month maintenance cap are all provisions that reward informed planning. If you are evaluating child support or spousal maintenance in Kansas, consider scheduling a free consultation with an experienced family law attorney.

Statutes referenced: K.S.A. Section 23-3001 et seq. (child support guidelines), K.S.A. Section 23-2904 (spousal maintenance), Kansas Supreme Court Administrative Order No. 307.

Frequently Asked Questions

How is child support calculated in Kansas?

Kansas uses the income shares model under K.S.A. Section 23-3001 et seq. Both parents’ domestic gross incomes are adjusted for maintenance, prior support obligations, and childcare costs, then combined and applied to the support schedule. Each parent’s share is proportional to their percentage of the combined income. When the non-residential parent has 35% or more of annual overnights, a parenting time adjustment reduces the obligation.

How long does child support last in Kansas?

Child support continues until the child reaches age 18, or until the child graduates from high school or turns 19, whichever occurs first if the child is still attending high school at 18. The parties may agree to extend support for post-secondary education, but the court cannot order it without an agreement.

What is the modification threshold for child support in Kansas?

A change of 10% or more in either parent’s income may constitute grounds for modification. Changes in parenting time, special needs, or health insurance costs may also warrant review. Modifications take effect from the date the motion is filed, and Kansas does not allow retroactive reduction of arrearages.

Is spousal maintenance capped in Kansas?

Yes. Under K.S.A. Section 23-2904, maintenance is limited to a maximum of 121 months (approximately 10 years). The court considers the duration of the marriage, standard of living, age and health of the parties, and each spouse’s earning capacity when setting the amount and duration. This cap applies regardless of how long the marriage lasted.

What is the 35% parenting time threshold in Kansas?

When the non-residential parent has 35% or more of annual overnights (approximately 128 nights), the Kansas Child Support Guidelines apply an adjustment that reduces the support obligation. This reflects the direct costs that the non-residential parent incurs during their parenting time and is a significant factor in both support calculations and parenting time negotiations.

How does Kansas enforce child support across state lines?

Kansas participates in interstate enforcement through the Uniform Interstate Family Support Act (UIFSA) and the Kansas Department for Children and Families, Child Support Services division. Enforcement tools available for interstate cases include income withholding from out-of-state employers, federal tax refund intercepts, and passport denial.

How This Guide Was Researched

This guide was developed by reviewing the Kansas Child Support Guidelines (K.S.A. Section 23-3001 et seq. and Kansas Supreme Court Administrative Order No. 307), K.S.A. Section 23-2904 (spousal maintenance), and the official Kansas Child Support Guidelines worksheet. Enforcement procedures were verified against Kansas Department for Children and Families Child Support Services publications. The analysis of the interplay between property division and maintenance was informed by Kansas Bar Association family law section materials and Kansas appellate case law.

Sources and Legal References

This guide draws on the following specific legal authorities and resources:

• K.S.A. Section 23-3001 et seq. — Kansas Child Support Guidelines (income shares model, guidelines schedule, parenting time adjustment)
• Kansas Supreme Court Administrative Order No. 307 — Adoption and updates to child support guidelines
• K.S.A. Section 23-2904 — Spousal maintenance (121-month cap, termination provisions, modification)
• K.S.A. Section 23-2802 — Property division (all property, marital and separate)
• Kansas Department for Children and Families — Child Support Services enforcement procedures

Official Kansas Resources

• Kansas Courts — About District Courts
• Kansas Legal Services
• Kansas DCF — Child Support Services

For more about how we research our guides, see our editorial policy and sources methodology.

Related Guides

• Child custody in Kansas
• Divorce in Kansas
• How child support is calculated
• Modifying child support
• Child support enforcement
• How alimony works
• Property division in divorce
• How to file for child support