
    Nita Kissel FANNING, Appellant, v. Whitney Ely FANNING, Appellee.
    No. 10-91-238-CV.
    Court of Appeals of Texas, Waco.
    Nov. 18, 1992.
    Rehearing Denied Dec. 30, 1992.
    LaNelle L. McNamara, McNamara & McNamara, Waco, for appellant.
    Jim Meyer, Jim Meyer & Associates, P.C., Waco, for appellee.
    Before THOMAS, C.J., and CUMMINGS and VANCE, JJ.
   OPINION

CUMMINGS, Justice.

Nita Fanning appeals from a court order reducing her former husband’s child-support payments from $3000 per month to $2250 per month. After a hearing on Whitney Fanning’s motion to modify child support, the court found that his net resources were less than at the time of divorce. Because Nita Fanning was improperly denied discovery of documents essential to prove the net resources available to Whitney Fanning, we reverse the judgment and remand the cause for a new trial.

The Decree of Divorce was rendered by the trial court on June 30, 1990. Mr. Fanning filed his motion to modify on September 28, 1990. On May 9, 1991, the court set the hearing on the motion to modify for May 20. Also on May 9, Ms. Fanning served Mr. Fanning with a notice to take his oral deposition on May 17. The notice was accompanied by a subpoena duc-es tecum, requesting the production of all financial documents supporting his motion to modify at least twenty-four hours before the deposition. The request for production designated particular documents including bank depository records, personal and business expense records, financial statements, and tax returns reflecting Mr. Fanning’s income since November 2, 1989. At Mr. Fanning’s request, the deposition was rescheduled for May 24, 1991, and the hearing was rescheduled for May 30. Finally, the deposition was again rescheduled by Mr. Fanning for May 29, one day before the hearing.

On May 30, Ms. Fanning presented to the court a motion for sanctions related to Mr. Fanning’s failure to comply with the requested discovery. At the beginning of the hearing Ms. Fanning’s attorney informed the court that, although Mr. Fanning made no objections or claims of privilege to the discovery request, he produced only ten pieces of paper at the time specified in the amended notice of oral deposition. Mr. Fanning appeared at the deposition with incomplete records of bank deposits, but he refused to produce other records to substantiate his claimed reduction in income from his law practice. According to Ms. Fanning’s attorney, during the deposition Mr. Fanning claimed for the first time that the requested financial documents were privileged.

Nevertheless, the court proceeded to hear evidence on Mr. Fanning’s motion to modify without considering Ms. Fanning’s motion for sanctions. Mr. Fanning testified that there had been a material and substantial change in his net resources since the entry of the divorce decree. The court overruled Ms. Fanning’s objections to the conclusory nature of his testimony. At the time of the divorce, the amount of net resources available to Mr. Fanning was $19,000 per month. He offered, as evidence of a change in resources, copies of income-tax returns representing his income for 1989 and 1990. Ms. Fanning objected to the admission of both exhibits because they were a summary of financial records not in evidence and because Mr. Fanning had failed to provide such records during discovery.

Mr. Fanning testified that the 1989 return reflected a gross income of $251,000 and a net income of less than $180,000. Ms. Fanning objected to the introduction of the 1990 tax return, which was unsigned, as hearsay. She also objected to the introduction of his accountant’s letter, attached to the return, as hearsay. Mr. Fanning testified that the 1990 return reflected gross receipts of $321,000 from his law profession, a gross income of $135,065, and taxes of $40,000. The court overruled Ms. Fanning’s objections and admitted the two exhibits.

Finally, Mr. Fanning argued that, because of recent changes in the workers’ compensation laws, his law practice was going to suffer. Although the court took judicial notice of the statutory changes, and Mr. Fanning testified that over half of his income was attributable to workers’ compensation cases, he offered no evidence of how his practice had in fact been affected by the changes in workers’ compensation practice generally.

Section 14.052(a) of the Family Code provides that the statutory guidelines for the support of a child “are intended to guide the courts in determining equitable amounts of child support in any suit affecting the parent-child relationship, including actions involving ... modification _” According to section 14.053(a), “An order of child support shall be based on the ‘net resources’ of the obligor and obligee....” “Net resources” includes self-employment income:

Income from self-employment, whether positive or negative, includes benefits allocated to an individual from a business ... less ordinary and necessary expenses required to produce that income, but may exclude amounts allowable under federal income tax law as depreciation, tax credits, or any other business expenses shown by the evidence to be inappropriate to the determination of income for the purpose of calculating child support.

(Emphasis added).

For the court to properly consider what business expenses are appropriately deducted from the gross income of Whitney Fanning’s law practice, Nita Fanning must be able to conduct discovery of the financial documents supporting his calculations of net income. Without the requested documents, Ms. Fanning is unable to adequately challenge Mr. Fanning’s testimony concerning his financial resources. Ms. Fanning properly requested discovery of Mr. Fanning’s financial records, filed a motion for sanctions upon his refusal to produce documents that he asserted were privileged, sought a hearing on her motion before the hearing on Mr. Fanning s motion to modify, and objected to Mr. Fanning’s evidence of net income because it was derived from the financial records withheld from her. Under these circumstances, we find that the denial of discovery deprived Ms. Fanning of access to material information needed to effectively cross-examine Mr. Fanning and to effectively challenge the accuracy of his testimony. The denial of discovery was material not only because it denied Ms. Fanning information needed to adequately present her case to the court, but also because it deprived the trial court of sufficient evidence on which to base a determination of Mr. Fanning’s net resources, including his income from the law practice. We recognize the need to protect the confidentiality of the records of Mr. Fanning’s law practice. However, this need not be an absolute bar to discovery because the court may order an in camera inspection of the documents to protect confidential client records. We find that the denial of discovery was such a denial of Nita Fanning’s rights as was reasonably calculated to cause and probably did cause the rendition of an improper judgment. As a result, we sustain Nita Fanning’s second point of error, and, without reaching her other points, we reverse the judgment and remand the cause for a new trial.

Reversed and remanded 
      
      . The trial court’s child-support award was affirmed by this court in Fanning v. Fanning, 828 S.W.2d 135, 150 (Tex.App. — Waco 1992, writ denied).
     
      
      . See Tex.R.Civ.P. 200(2)(a).
     
      
      . Although the exhibits were not included in the record filed with this court, we accept the unchallenged statement in Nita Fanning’s brief, that the return was unsigned, as correct. See Tex.R.App.P. 74(f).
     
      
      . Tex.Fam.Code Ann. § 14.052(a) (Vernon Supp. 1992).
     
      
      . Id. § 14.053(a).
     
      
      . Id. § 14.053(b).
     
      
      . Id. § 14.053(c).
     
      
      . See Finn v. Finn, 658 S.W.2d 735, 744 (Tex. App. — Dallas 1983, writ refd n.r.e.).
     
      
      . See id.
      
     
      
      . See id. at 746.
     
      
      . See Tex.R.App.P. 81(b)(1).
     