
889 P.2d 1354 (1995)
133 Or.App. 112
In the Matter of the MARRIAGE OF Laurie Ann HARDIMAN, Petitioner, and
Jeffery Donald HARDIMAN, Respondent.
STATE of Oregon, DEPARTMENT OF HUMAN RESOURCES, Appellant,
v.
Jeffery Donald HARDIMAN, Respondent, and
Laurie Ann Hardiman, nka Blair, Obligee.
90-0914; CA A84128.
Court of Appeals of Oregon.
Argued and Submitted January 19, 1995.
Decided February 15, 1995.
Janie M. Burcart, Asst. Atty. Gen., argued the cause for appellant. With her on the brief were Theodore R. Kulongoski, Atty. Gen. and Virginia L. Linder, Sol. Gen.
No appearance by respondent.
Before WARREN, P.J., and EDMONDS and ARMSTRONG, JJ.
PER CURIAM.
Mother appeals from a judgment that reduced father's child support obligation. On de novo review, ORS 19.125(3), we reverse and remand.
The parties ended their five-year marriage in 1990. The trial court awarded wife custody of their child and ordered husband to pay $235 per month in child support. Later, mother, through the Support Enforcement *1355 Division, sought a modification of father's child support obligation. The referee entered an order reducing father's obligation to $175 per month. Mother appealed to the circuit court. ORS 416.427(6). At the hearing, the parties gave evidence that father is remarried and mother is living with another partner. The trial court, in calculating the presumptive child care obligation of each parent, included the wages of each parent's new partner. Next, it reduced the presumptive amount without applying any of the criteria under the guidelines and ordered father to pay $170 per month in child support.
The state appeals, asserting that the trial court erred in considering the income of each parent's new partner in determining the presumptive child support obligation. We agree. In calculating gross income under the guidelines, the only items that are included are the parents' income and, in some cases, their potential income.[1] ORS 25.275; ORS 25.280; OAR 137-50-320(3); Ainsworth and Ainsworth, 114 Or. App. 311, 314, 835 P.2d 928 (1992).
Reversed and remanded to reconsider child support.
NOTES
[1]  The income of the parties' new partners may be considered under OAR 137-50-330(2)(a)(J) to rebut the presumed amount.
