Background
After Kathryn and Colin Christofferson dissolved their marriage, the parties disputed the amount of child support. A temporary administrative order required Colin to pay $193 monthly and credited him for private health-insurance premiums for the children. Kathryn later sought a recalculation and retroactive support.
Following an evidentiary hearing and an earlier remand, the District Court adopted a $770 monthly child-support calculation effective April 1, 2025. It also ordered Kathryn to enroll the children in Healthy Montana Kids, replacing Colin’s private coverage, but the worksheet used to calculate $770 continued to include and credit Colin for $6,534 in annual private-insurance premiums. The court declined to award support retroactively before April 1, 2025.
The Court’s Holding
The Montana Supreme Court reversed the $770 support amount because the calculation did not implement the District Court’s own health-insurance ruling. The Guidelines require the calculation to reflect actual child-insurance expenses and to credit the parent who pays them. Because the ordered Healthy Montana Kids arrangement eliminated the private-premium expense, the court could not retain a worksheet that added that expense and credited Colin for paying it without making a legally supported variance finding.
The Court affirmed the denial of support retroactive to January 17, 2024 or earlier. Although the District Court incorrectly stated that Kathryn delayed requesting back support, that error was not necessary to its decision. The court permissibly considered the support Colin actually provided, including insurance, both parents’ financial circumstances, and the children’s needs in declining an earlier retroactive award. It also denied Colin’s request for appellate sanctions.
Key Takeaways
- A child-support worksheet must match the court’s actual health-insurance arrangement and cannot credit premiums that no parent incurs.
- The District Court must recalculate presumptive support from April 1, 2025, credit payments already made, and account for actual insurance expenses without duplicative credits.
- A final support amount exceeding a temporary administrative payment does not automatically require retroactive support.
Why It Matters
The decision underscores that courts must ensure each material Guidelines input—including health-insurance costs—matches their findings and operative orders. A support figure cannot be sustained merely because other worksheet inputs are correct.
It also confirms that retroactive child support remains discretionary and depends on the full record, while clarifying that insurance payments already credited in a net transfer calculation cannot be counted again to show an obligor paid enough support.