may not be cited except as provided by
Minn. Stat. § 480A.08, subd. 3 (1996).
STATE OF MINNESOTA
IN COURT OF APPEALS
In re the Marriage of:
Debra Jean Schreur, petitioner,
Kevin James Schreur,
Filed March 3, 1998
Affirmed in part, reversed in part, and remanded.
Mille Lacs County District Court
File No. F997250
Thomas J. Meinz, 515 First Street, Princeton, MN 55371 (for respondent)
Considered and decided by Lansing, Presiding Judge, Crippen, Judge, and Peterson, Judge.
In an appeal from judgment in a marital dissolution action, Kevin Schreur challenges the district court's calculation of Debra Schreur's net monthly income for support purposes and the calculation of the amount of support in light of the joint physical custody. The income calculation is supported by the record, but the parents' respective obligations indicate a departure without accompanying findings. We therefore affirm in part, reverse in part, and remand.
A finding of net income will not be set aside unless it is clearly erroneous. See Minn. R. Civ. P. 52.01 (findings of fact not set aside unless clearly erroneous); Kornberg v. Kornberg, 542 N.W.2d 379, 386 (Minn. 1996) (same); see also Strauch v. Strauch, 401 N.W.2d 444, 448 (Minn. App. 1987) (finding of net income for support purposes will be affirmed if it has a reasonable basis in fact). Debra Schreur acknowledges that she worked additional hours when they were available, but explained in her affidavit that her employer has informed her that "the recent hiring of additional staff will probably limit [her] ability to work extra hours."
The district court's exclusion of income that may be unavailable has a reasonable basis in fact. See Minn. Stat. § 518.54, subd. 6 (1996) (defining income, in part, as a "periodic payment"); Haasken v. Haasken, 396 N.W.2d 253, 261 (Minn. App. 1986) (stating, "[t]o properly be included in a calculation of net monthly income the payments need to be `the type of income which could or should provide a dependable source of child support'") (quoting Stangel v. Stangel, 366 N.W.2d 747, 749 (Minn. App. 1985)). Cf. Erler v. Erler, 390 N.W.2d 316, 319-320 (Minn. App. 1986) (holding trial court did not abuse its discretion by including income from "regular, steady" part-time employment as earnings for support purposes). To the extent Debra Schreur regularly works more than 22.3 hours per week, Kevin Schreur may move to modify support. See Minn. Stat. § 518.64 (Supp. 1997).
The district court did not address the amount of time either parent acts as custodian of the children. Kevin Schreur claims the district court erred in setting support without considering what he claims is an equal split in the time each parent acts as custodian. The Hortis/Valento formula contemplates each parent paying support while the other parent has custody of the children. Hortis, 367 N.W.2d at 636; see Valento, 385 N.W.2d at 863 ("[a] party's support obligation is determined by his or her guideline amount for the period of time the other parent has custody") (emphasis added). Although the district court indicated that it set support based on the Hortis/Valento formula, its calculations were not computed using the period of time that each parent has custody but instead on the amount that each parent would pay if the other parent had physical custody of the children all the time. The court properly applied an offset, but the net result is an overstatement of Kevin Schreur's net monthly support obligation.
Debra Schreur defends the support award as an upward deviation from the guidelines and within the district court's discretion. But a deviation would require written findings justifying the deviation. Minn. Stat. § 518.551, subd. 5(i) (1996) ("court shall make written findings" to justify deviation); see Minn. Stat. § 645.44, subd. 16 (1996) ("`[s]hall' is mandatory"). Although we agree that Valento did not require such findings, the legislature amended the support guidelines after Valento was decided. See 1991 Minn. Laws ch. 292, art. 5, §§ 75-78 (amending child support guidelines).
The district court did not indicate that it intended to deviate from the guidelines, and it did not make the findings statutorily required for a deviation. Therefore, we remand for further determination of the support amount. See Erickson v. Erickson, 385 N.W.2d 301, 303 (Minn. 1986) (stating inadequate findings on modification issues requires remand). On remand, the district court should determine the amount of time each parent acts as custodian of the children and calculate a support obligation based on the Hortis/Valento formula. If the district court intends to deviate from the obligation calculated under the Hortis/Valento formula, the order should provide reasons for the deviation or for the choice of a differing formula. Whether to reopen the record on remand is discretionary with the district court.
Affirmed in part, reversed in part, and remanded.
 A minor arithmetic error in the order caused Kevin Schreur's net monthly support obligation to be listed as $333.80 rather than $332.80.