Paul A. Piaskoski (Paul) appeals from an order that denied his motion for modification of support payments and the allowance of credit against his support arrearage. We reverse the trial court's order.
The facts are undisputed. Paul and his former wife, Eileen M. Piaskoski (a/k/a Eileen La Susa) (Eileen), were granted a divorce on April 7, 1986. Eileen was awarded custody of the couple's two minor sons; Ray, born February 27,1972, and Tom, born March 30,1977. Paul had custody of their daughter, Stephanie, bom May 27, 1968. An adult son, Paul Jr., attended college. Paul was ordered to pay child support of $520 per month to Eileen for the couple's two minor sons.
Eileen remarried on November 1, 1986. Subsequently, Tom asked Paul if he could spend more time with Paul. At a motion hearing, Paul testified that Tom spent approximately 223 days at his home during 1987. He also testified that he provided transportation, food, clothing, and various other items for Tom.
On September 23, 1987, Eileen filed a contempt motion alleging nonpayment of child support by Paul. *552 On January 4,1988, Paul filed a countermotion, seeking the transfer of custody of Tom to him, the "crediting, abating, or recouping [of] the support arrearage" to compensate him for expenditures for Tom and amounts paid by Paul on Eileen's behalf, and adjustment in the support payments. In its May 27,1988 order, the trial court held that: (1) Paul was not in contempt because he complied with the court order in good faith; (2) under sec. 767.32, Stats., Paul was not entitled to a modification of child support; and (3) it was prohibited from cancelling or changing arrearage. See sec. 767.32(lm). On September 23, 1988, the trial court issued an order stating that Tom should continue to reside with Paul.
On appeal, Paul raises two issues: (1) whether the trial court abused its discretion when it failed to modify the child support payments; and (2) whether the trial court erred when it concluded that sec. 767.32(lm) prohibits it from giving credit against the support arrearage.
CHILD SUPPORT MODIFICATION
The determination of child support is within the sound discretion of the trial court.
Edwards v. Edwards,
The trial court may modify support payments when there has been a substantial or material change in circumstances of the parties or the children.
Anderson v. Anderson,
At the hearing on the motions, Paul testified that Tom spent approximately 223 days with him in 1987 and that he paid for Tom's expenses during that time. He also testified that at the time of the divorce, his gross monthly income was $2,085, and that at the time of the hearing, it had decreased to $1,825. Under the divorce judgment, Paul was obligated to pay child support of $520 to Eileen for both sons, although only Ray lived with her on a full-time basis. Eileen testified that she was remarried and that her spouse paid for one-half of the household expenses. Although her monthly income had not changed since the divorce, her expenses had decreased dramatically. At the time of the divorce, Eileen was obligated to pay a monthly mortgage payment of $1,200. After selling the house, her rent amounted to $787 per month. Furthermore, in addition to contributing one-half of the expenses, Eileen's spouse gave her $2,400 to cover other expenses. Finally, Eileen testified that she alone paid for Tom's tuition and books at a private school.
In its memorandum decision, the trial court failed to state its reasons for denying the modification. It simply found that "the standards outlined in [sec.] 767.32
*554
[Stats.,] have not been met." Although the decision to modify child support payment is within the discretion of the trial court, that exercise of discretion is not the equivalent of unfettered decision-making.
See Hartung v. Hartung,
CREDIT ALLOWANCE
Paul next argues that he should be given credit against the support arrearage. At the time of the hearing, the support arrearage amounted to $4,063. In his motion, Paul requested that the trial court give him credit against his support arrearage for two bills that were assigned to him and support expenditures for Tom in 1987. In the divorce judgment, Paul was ordered to pay $320 of a $960 doctor's bill. However, because Eileen failed to pay the remaining portion, the doctor obtained a judgment against Paul for $640. Paul requested a $640 credit. Paul also asked for credit for a $382 oil company bill, which the trial court ordered him to pay but agreed to give him credit against his support obligation. Finally, Paul requested a $3,435.05 credit for support expenditures for Tom in 1987. Although Paul had physical custody of Tom for 223 days during 1987, Paul was required to pay Eileen child support of $260 per month for Tom. *555 The trial court held that sec. 767.32(lm), Stats., prohibited it from recalculating the arrearage based on a credit.
The application of a statute to a set of undisputed facts presents a question of law which we review independently without deference to the trial court.
Ball v. District No. 4, Area Bd.,
Section 767.32(lm) states that "[i]n an action under sub. (1) to revise a judgment providing for child support, . . . the court may not revise the amount of child support . . . due prior to the date that notice of the action is given to the respondent, except to correct previous errors in calculations." (emphasis added). Section 767.32(lm) only prohibits the court from revising the amount of child support, it does not prevent the trial court from giving credit against support arrearage. Paul did not request a revision of the child support. We conclude that the trial court erred when it failed to credit the doctor and oil bills and the support expenditures on behalf of Tom against Paul's support arrearage.
By the Court. — Order reversed and cause remanded for further proceedings.
