Opinion
In this appeal we consider whether a court may take cognizance of a child’s independent income in determining the parent’s obligation of support. We conclude that it may do so, but only in a limited, and restricted sense and that a solvent parent may not entirely discharge his or her support obligation by resort to the child’s independent income.
Plaintiffs, Scott and Marc Armstrong, ages 19 and 16, respectively, at the time of the commencement of this action are the only children born to the marriage, since dissolved, of Henry Armstrong (defendant) and Charmaine Armstrong. Plaintiffs were income beneficiaries of a testamentary trust established by their paternal grandfather in 1956. Under the terms of the trust their interest terminated on December 31, 1972.
Charmaine obtained an interlocutory decree of divorce from defendant in 1959, and a final decree in 1960. Prior to the entry of the interlocutory judgment, the parties executed a property settlement agreement which provided that, since each plaintiff received approximately $84 per month from the trust, defendant would pay monthly the difference bétween the amount each child received from the trust and. *946 $125, and in the event and to the extent the sum derived from the trust exceeded $125, defendant was to receive a corresponding credit against his support obligations for succeeding months. Defendant also agreed to pay all extraordinary medical and dental expenses incurred by the children. The terms of the agreement in substance were incorporated in the interlocutory decree of divorce.
In 1973 plaintiffs sued their father for past child support and for misappropriation of their trust assets. They sought general, damages, declaratory relief, a temporary restraining order, counsel fees, costs and a preliminary injunction against distribution to defendant of a $50,000 trust asset. The trial court sustained both general and special demurrers interposed by defendant, concluding that it was proper for the court to recognize and give full credit to the plaintiffs’ independent income received from the trust in determining defendant’s support obligations. Plaintiffs declined to amend their complaint and instead took this appeal after their complaint was dismissed.
Plaintiffs’ complaint contains four causes of action. In the first they allege that they are the sons of defendant and that defendant had both the duty and ability financially to support them; that the property settlement agreement incorporated in the divorce decrees obligated
defendant to pay
child
support of
$125
per month per
child
(in
passing we note the material variance between this allegation and the provisions of the support order, incorporated as an exhibit to the complaint, which directs defendant to pay only the
difference
between the trust income and $125, see
Able
v.
Van Der Zee
(1967)
*947 1. Parental Duty of Support
As we have noted, the principal issue in the case is whether a trial court in determining the nature and extent of a parent’s support obligation may consider the child’s own independent income.
Resolution of the issue involves application of certain well-settled general principles. There is a statutory obligation of child support imposed on parents. (Civ. Code, §§ 242-243, 4700.) This obligation continues notwithstanding the parents’ lack of custody
(Kresteller
v.
Superior Court
(1967)
Notwithstanding the broad latitude permitted the trial court in support matters, and acknowledging the existence of conflicting views, we conclude that the soundest and most substantial statutory and judicial authority supports the rule that parents bear the primary obligation to support their child and that resort may be had to the child’s own resources for his basic needs only if the parents are financially unable to fulfill that obligation themselves. We consider some of these authorities.
California has adopted the Uniform Civil Liability for Support Act, contained in' Civil Code section 241 et. seq. Sections 242 and 243 impose upon both parents the duty to support their children. Guidance for the application of these sections is found in section 246, which authorizes the court to consider the child’s need, relative wealth, and income in determining “. . . the amount due for support...” (Italics added.) While *948 section 246 allows consideration of the child’s independent wealth and income in fixing the amount of the support obligation, this section does not authorize the court to relieve entirely a financially capable parent of his or her obligation to support the child. The section permits reduction in the amount of support but it neither expressly nor by necessary implication frees the parent of the continuing obligation, which we deem primary, to provide the child with at least the basic necessaries of life.
Section 1504 of the Probate Code reinforces this conclusion. It provides that if a minor “has property, the income of which is sufficient for his or her support, maintenance and education in a manner more expensive than his or her parents can reasonably afford, ...” (italics added) then the expenses of support, maintenance and education may be defrayed out of the child’s income, in whole or in part, in such amounts as the court deems reasonable. Section 1504 confirms the view that although the parent, if financially able, must provide for the child’s basic, minimum support needs, the child’s income may be used to supplement the parent’s contribution in order to permit the child to live in a more “expensive” manner by way of special education, travel, etc. It follows as a corollary, however, that only if the parent is unable to provide minimum-level support should the child’s outside income relieve the parent entirely of his support obligation.
Numerous appellate decisions add strength to the foregoing interpretation of the statutes. As expressed in
In re Carboni
(1941)
The general rule in other states appears to be that “the primary obligation of a parent to support his minor children if he is able to do so is not affected by the fact that the child may have his own separate property, or his own income derived from property, trust, or annuity.” (59 Am.Jur.2d, Parent and Child, § 77, p. 169, and cases cited; see Annot.
Sound public policy favoring child support (see
Williams
v.
Williams
(1970)
*950 2. A vailability of Collateral A ttack
Although the trial court erred in assuming that defendant properly could escape his support obligation by resort to plaintiffs’ trust fund for their entire support needs, defendant urges that, nevertheless, plaintiffs are not entitled collaterally to attack the judgment which established the support obligation. We agree.
As plaintiffs concede, and as we have previously noted
(ante,
p. 947), a support order may not be retroactively modified. (Civ. Code, §§ 4700, 4811;
Parker
v.
Parker
(1928)
Plaintiffs confuse errors in excess of jurisdiction with errors of substantive law which are within the court’s jurisdiction. Collateral attack is proper to contest lack of personal or subject matter jurisdiction or the granting of relief which the court has
no power
to grant
(Swycaffer
v.
Swycaffer
(1955)
Moreover, even were we to assume that the defect in the divorce judgment was jurisdictional, nevertheless, in the absence of unusual circumstances “collateral attack will .not be allowed where there is fundamental jurisdiction [i.e. of the person and "subject matter] even though the judgment is contrary to statute.”
(Pacific Mut. Life Ins. Co.
v.
McConnell
(1955)
Plaintiffs argue that the interlocutory and final divorce judgments should not be binding on them because they were not parties to the action giving rise to the judgments. The doctrinal reach of the res judicata bar extends, however, to those persons “in privity with” parties.
(Bernhard
v.
Bank of America
(1942)
Plaintiffs have not alleged that defendant committed fraud in the divorce action, a circumstance which might independently justify collateral attack. (Code Civ. Proc., § 473;
Miller
v.
Miller
(1945)
As noted above, modification of child support orders cannot ordinarily be given retroactive effect. In the light of all of the circumstances of this case and in the interests of finality of judgments, we will not permit plaintiffs in this case to achieve the same effect through collateral attack.
The judgment is affirmed.
Wright, C. J., McComb, J., Tobriner, J., Mosk, J., Sullivan, J., and Clark, J., concurred.
