Kansas Parenting Time Percentage Calculator

Why the Percentage Matters

Your parenting time percentage directly affects your child support obligation under the Kansas Child Support Guidelines. The more time the non-residential parent has the child, the lower the support transfer may be — because that parent is already covering direct expenses (meals, activities, utilities) during their parenting time.

The thresholds are specific:

• 35%–39% parenting time: 10% reduction in the basic child support obligation
• 40%–44%: 20% reduction
• 45%–49%: 30% reduction
• 50% (true equal time): The standard adjustment doesn't apply — instead, the court uses either the Shared Expense Formula or the Direct Expense Formula

A single percentage point can cross a threshold boundary. If your schedule works out to 34.8%, you get no adjustment. At 35.1%, a 10% reduction may apply. That difference could mean hundreds of dollars per year.

How Kansas Calculates the Percentage

Kansas uses a 168-hour week as the base. Every week has 168 hours, and each hour the child is in your physical care counts toward your total — with one critical exception.

School and structured daycare hours are excluded. If the child is in school from 8:00 a.m. to 3:00 p.m. on a day that falls during your parenting time, those 7 hours don't count toward your total. The same rule applies to organized daycare or after-school programs. The rationale: neither parent is providing direct care during those hours, so they shouldn't inflate either parent's percentage.

This exclusion is where most parents make calculation errors. A parent who has the child every Monday and Tuesday overnight may assume they have 2/7 of the week (28.6%). But after subtracting school hours on both days, the actual percentage is lower.

The 168-Hour Method Step by Step

1. Map your schedule for a typical two-week cycle. Most Kansas schedules repeat on a 14-day pattern (the 2-2-3 rotation alternates weekends biweekly, and 2-2-5 runs a 14-day cycle).

2. Count the total hours you have the child each week. Include overnight hours, weekend hours, and any weekday time outside of school/daycare.

3. Subtract school and structured daycare hours from any day that falls during your parenting time.

4. Calculate the adjusted weekly total by dividing the hours remaining by the total countable hours (168 minus school and structured daycare hours).

Worked Example: Every-Other-Weekend Plus Wednesday Evening

Parent B (non-residential) has the child:

• Every other weekend: Friday 6:00 p.m. to Sunday 6:00 p.m. = 48 hours every two weeks = 24 hours/week average
• Wednesday evening: 5:00 p.m. to 8:00 p.m. = 3 hours/week

Total: 27 hours per week. No school hours to subtract (all parenting time falls outside school hours).

Percentage: 27 ÷ 168 = 16.1% — well below the 35% threshold, so no adjustment applies.

Worked Example: 2-2-5 Rotation (50/50)

Parent A always has Monday and Tuesday. Parent B always has Wednesday and Thursday. Weekends (Friday through Sunday) alternate.

In a typical week where Parent A has the weekend:

• Monday: after school (3:00 p.m.) to Tuesday morning school drop-off (8:00 a.m.) = 17 hours (exclude Monday school 8:00–3:00)
• Tuesday: after school (3:00 p.m.) to Wednesday morning school drop-off (8:00 a.m.) = 17 hours (exclude Tuesday school)
• Friday 3:00 p.m. through Sunday 6:00 p.m. = 51 hours (no school on weekend)

Total = 85 hours. 168-hour week minus roughly 35 school hours = 133 countable hours. Parent A's share: 85 ÷ 133 ≈ 63.9% for that week.

In the alternating week (Parent B has the weekend), Parent A drops to Monday/Tuesday only. The two-week average reaches approximately 50/50.

Extended Summer Parenting Time

If the non-residential parent hosts the child for more than 14 consecutive days — common during summer breaks — a temporary extended parenting time adjustment may reduce the monthly support obligation by up to 50% for that period. The summer block counts toward the annual average as well, which can push the overall percentage past a threshold.

Common Mistakes

Counting school hours: The most frequent error. Hours where the child is in school or structured daycare don't count for either parent.

Using a single week instead of averaging: If your schedule alternates (e.g., 2-2-3 rotates the weekend block), you need to average over the full cycle, not calculate a single week.

Rounding prematurely: Calculate to at least one decimal place before determining which threshold applies. Rounding 34.7% to 35% when the actual number is below the threshold changes the support calculation.

Ignoring holidays and school breaks: Your regular schedule percentage may differ from your annual average if one parent gets a disproportionate share of holiday and summer time.

The Kansas Child Custody & Parenting Plan Guide includes a parenting time calculator worksheet that walks through the 168-hour method, handles alternating schedules, and connects the resulting percentage directly to the child support adjustment thresholds.

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