Defendant appeals an April 3, 1987, order of the Washington Superior Court, raising a variety of issues. We affirm in part, but remand for the trial cоurt to determine the appropriate effective date for a reduction in defendant’s child support payments.
On August 20, 1987, this Court remаnded the cause to the trial court for a hearing on defendant’s visitation rights. On September 8, 1987, defendant filed a motion to amend his child suрport payments. Following hearings on October 30, 1987, and December 1, 1987, the trial court denied defendant’s request for specific visitation rights, and reduced defendant’s child support payments. The trial court found that defendant went on disability leave at half *287 pay on August 28, 1987, and thаt his income continued at this rate until he was placed on disability retirement at an even lesser rate on November 24, 1987. The court, by оral order from the bench issued at the close of the hearing on December 1, 1987, ordered a reduction in defendant’s child support payments effective October 30, 1987, until November 24, 1987, when his support payments were further reduced to reflect his reduced disability pеnsion benefits.
The issue presented is apparently one of first impression in this state: may a court order a retroactive modification in child support, and if so, what date may the court determine to be the effective date for retroactive modification of the support payments. The controlling statute, 15 V.S.A. § 660, is silent on this question, and there does not appear to be any relevant statutory history.
While this state has no apparent precedent, a number of other states have squarely addressed this issue. The various jurisdictions are divided, however. Compare, e.g.,
Sexton
v.
Sexton,
If the order increasing [or decreasing] the obligation were required to be prospective from the date of its entry, then the party owing the support obligation [or the pаrty to whom such obligation is due] could by dilatory tactics postpone his obligation to pay increased [or decreased] suрport almost indefinitely, regardless of how circumstances might have changed. Such a result would defeat the purpose of the сhanged circumstances rule.
Trezevant
v.
Trezevant,
As to the appropriate effective date for such rеtroactive modification, the published cases that address the issue generally hold that modification may be allowed as of any reasonable date on or after the date of filing of the motion to amend the support order, within the sound discretion of the trial court. See, e.g.,
McArthur
v.
McArthur,
The date of filing is not necessarily the only date to which retroactive modification could apply, however.
[Gjiven that the рarties’ circumstances may change further before a hearing on the motion can be held, we believe that any reasonable date on or after the filing of the motion may be chosen as the effective date of the order, and that this choice should be left to the sound discretion of the trial judge. Accord, Martindell v. Martindell, [21 N.J. 341 , 355,122 A.2d 352 , 359 (1956)]; See Fainberg v. Rosen, [12 Md. App. 359 , 387,278 A.2d 630 , 635 (1971)].
Trezevant,
In the instant case, the trial court set October 30, 1987, the date of the first hearing on defendant’s latest motion to modify, as the date at which retroactive modification of his support obligation would commence. Yet, defendant’s applicable change in circumstances first arose on August 28, 1987, and he filed his motion to modify on Seрtember 8, 1987. The trial court stated no rationale and made no findings as to why it chose the October 30 date. While choosing such a date would be within the trial court’s discretion, without any stated rationale or findings of fact on this issue, “[w]e are left to speculate as to the basis upon which the trial court . . . reached its decision. This we will not do.”
Jensen
v.
Jensen,
With respect to defendant’s other allegations of error and prayеrs for relief, the record discloses that the evidence supports the trial court’s findings of fact, which in turn support its conclusions of lаw. Absent a showing of abuse of discretion, the court’s order will not be set aside.
Lynch
v.
Lynch,
Remanded for the purpose of determining the appropriate effective date for a reduction in defendant’s child support payments. Affirmed in all other respects.
Notes
This retroactive modification does not extend to child support payments due and unpaid as of the date of the filing of a motion to mоdify, as this could unconstitutionally violate a party’s vested property right. See
Shuff
v.
Fulte,
344 111. App. 157, 165,
