OPINION
Opinion By
Clifford Holland appeals the trial court’s orders on the parties’ motions for clarification of the divorce decree between him and Carrie Holland. Appellant brings five issues asserting the trial court erred (1) by failing to grant offsets to appellant’s contractual alimony obligation; (2) by signing an income-withholding order for contractual alimony after the court’s plenary power had expired; (3) by signing an income-withholding order when appellee had not performed the conditions precedent in the divorce decree; (4) by signing an income-withholding order for spousal maintenance instead of an income-withholding order for contractual alimony; and (5) by signing a nunc pro tunc order of income withholding for contractual alimony without notice to the parties or a hearing. We reverse the trial court’s judgment in part, vacate the trial court’s income-withholding orders, and remand the cause to the trial court for further proceedings.
BACKGROUND
The parties were divorced in February 2008 under a divorce decree incorporating the terms of their mediated settlement agreement of October 2007. Pursuant to the decree, appellant was to transfer to appellee funds from a 401k account, which were worth $459,145 at the time of the signing of the mediated settlement agreement. Appellee was then required to pay eight specified liabilities totaling $344,002, plus taxes due on the funds appellee received from the 401k account.
The parties also agreed that appellant would pay contractual alimony of $5000 per month for forty-five months up to a maximum of $225,000 “to provide a continuing measure of support for [appellee] after divorce.” The decree contained a provision permitting appellant to offset against the alimony payments any amounts of the eight liabilities that appellee did not pay and that appellant was required to pay. The decree also stated that once appellee paid the eight liabilities in full, then the Order of Income Withholding for Contractual Alimony would be served on appellant’s employer and the withheld earnings forwarded to appellee “in accordance with the Order of Income Withholding for Contractual Alimony that was signed by this Court.” No income-withholding order for contractual alimony was signed when the trial court signed the divorce decree.
After the decree was signed, the funds in the 401k account were transferred to appellee. However, according to appel-lee’s counsel’s statement to the trial court, appellee received only $375,100, not $459,145, a difference of $84,045 and 18.3 percent, because of a market decline between the signing of the mediated settlement agreement in October 2007 and the signing of the divorce decree in February 2008.
Appellant made payments on some of the eight liabilities, and he offset those payments against the alimony payments. Appellee then paid the entire amount out
In August 2008, both parties filed motions to clarify the divorce decree. Appellant requested that his alimony payments be offset by the $76,308 reduction in the debt appellee paid. He also asked that the court deny appellee’s request for a withholding order because appellee had not complied with the decree’s condition precedent for the withholding order that the eight liabilities “are paid in full.” Appellant also brought a claim for breach of contract, alleging appellee had breached the mediated settlement agreement by failing to pay the liabilities in the amounts set forth in the agreement. Appellee asserted that appellant had failed to make six of the alimony payments and requested the court hold appellant in contempt for failing to pay and impose a withholding order.
On July 10, 2009, the trial court ruled on the parties’ motions and determined: (a) appellant had agreed to pay 45 payments in the amount of $5000 for a total amount of $225,000; (b) appellant was entitled to credits for debt and car-repair payments of $20,000; (c) appellant had paid alimony of $23,070; (d) the combined alimony and credits equaled $43,070; and (e) appellant still owed $181,930 in contractual alimony. The court then ordered that appellant make payments of $5000 per month until the sum of $181,930 has been paid in full. The court stated in the order it “has signed the Order of Income Withholding for Contractual Alimony on this date.” However, the document the court signed was styled, “Order of Income Withholding for Spousal Maintenance.” Appellant timely filed a motion for new trial, which was overruled by operation of law, and a notice of appeal from the July 10, 2009 order.
On February 5, 2010, after the court’s plenary power over the July 10, 2009 order had expired and while the case was pending on appeal, the trial court, without a motion and without notice to the parties, signed a “Nunc Pro Tunc Order of Income Withholding for Contractual Alimony.”
CONTRACTUAL ALIMONY
In his first issue, appellant contends the trial court erred in failing to offset his alimony payments by the amount of the liabilities appellee had agreed, but failed, to pay. In the third issue, appellant contends the trial court erred in signing an income-withholding order because appellee had not complied with the condition precedent of paying the eight liabilities in full. In the second, fourth, and fifth issues, appellant contends the trial court lacked authority and jurisdiction to enter the withholding orders.
Contract Interpretation
Resolution of these issues involves interpretation of the parties’ mediated settlement agreement as incorporated in the divorce decree.
Divorce Decree
The relevant provisions of the divorce decree state,
IT IS FURTHER ORDERED Carrie Holland is to receive from the USB 401 (k) the gross amount due her pursuant to this agreement (which was in the amount of $459,145.00 at the time of the execution of the Mediated Settlement Agreement in this matter) and immediately upon her receipt of [it] is ordered to pay the following liabilities:
a.Bank of America credit card acct. # ... in the amount of $56,734.00;
b. CitiBank credit card acct. # ... in the amount of $45,000.00;
c. Bank of America credit card account # ... in the amount of $11,336.00;
d. Wells Fargo loan, acct. # ... in the amount of $99,758.00;
e. Attorney’s fees payable to Laurence A. De Plaza in the amount of $40,000.00;
f. Attorney’s fees payable to Tom O’Brien in the amount of $30,000.00;
g. American Express credit card acct. # ... in the amount of $61,174.00; and
h. The total amount of taxes due on the funds received from the USB 401 (k) on behalf of Carrie Holland.
Alimony
Purpose and Intent of Article
The Court finds that the parties have agreed that it is the mutual desire of the parties to provide a continuing measure of support for Carrie Holland, Receiving Party, after divorce....
Terms, Conditions, and Contingencies
The Court finds that the parties have agreed, and IT IS ORDERED AND DECREED that Clifford Holland will pay to Carrie Holland forty-five (45) consecutive monthly payments of $5,000.00 per month as alimony. These payments will be payable monthly, on or before the tenth day of each month, with the first payment being due and payable on the first day after the date this Agreed Decree of Divorce has been signed by the Presiding Judge in this case and then on the 10th of each month thereafter until all payments have been*197 made in accordance with this Decree of Divorce.
[[Image here]]
The parties have agreed and it is therefore ORDERED that in the event Carrie Holland does not pay the liabilities listed on Schedule D, item W-l (a) through (h), and if Clifford Holland is then required to pay any of said liabilities, then Clifford Holland shall be entitled to take a dollar-for-dollar offset against his alimony obligation for payment of these liabilities.
Withholding Order
IT IS ORDERED AND DECREED that once the liabilities listed on Schedule D, item W-l (a) through (g) are paid in full by Carrie Holland as more fully set forth herein, then the Order of Income Withholding for Contractual Alimony shall be served upon the employer of Clifford Holland, and the unpaid monthly alimony obligation shall be withheld from the earnings of Clifford Holland and forwarded to Carrie Holland in accordance with the Order of Income Withholding for Contractual Alimony that was signed by this Court.
Offsets
In his first issue, appellant contends the trial court erred by failing to offset his alimony obligations by the difference in the amount of the eight liabilities set forth in the divorce decree and the amount ap-pellee actually paid to resolve those liabilities. The decree ordered appellee to pay “Bank of America credit card ... in the amount of $56,734.00,” but she resolved the liability for $22,000. The decree ordered her to pay “American Express credit card ... in the amount of $61,174.00,” and she settled that account for $19,600. Appellant argues he was entitled to an offset of $76,308.
The decree provided that appellant would receive an offset if appellee failed to pay the liabilities, and if appellant “[was] then required to pay any of said liabilities.” It is undisputed that appellant was not required to pay, and did not pay, any of the $76,308 that appellee failed to pay on those two liabilities. Accordingly, appellant is not entitled to an offset under the terms of the divorce decree.
Appellant appears to assert that, notwithstanding the offset provision in the divorce decree, he is entitled to offsets under common law contract principles. However, appellant does not identify or explain these common law contract principles or cite any authority in support of them. This assertion is not sufficiently briefed for us to review it. See Tex.R.App. P. 38.1(i) (“The brief must contain a clear and concise argument for the contentions made, with appropriate citations to authorities and to the record.”).
We conclude appellant has failed to show the trial court erred by not offsetting his alimony payments by the $76,308 that ap-pellee failed to pay on two of the liabilities. We overrule appellant’s first issue.
Income-Withholding Orders
“Pay in Full ”
In his third issue, appellant contends the court erred in signing an income-withholding order because appellee had failed to meet the condition precedent that she pay “in full” the eight liabilities. Appellant argues appellee did not pay the Bank of America and American Express liabilities in full because she negotiated settlements of those accounts for less than the amounts set out in the divorce decree.
A liability is “paid in full” when the payor has fully extinguished the liability, regardless of the amount paid. See
July 2009 Income-Withholding Order
In his second issue, appellant contends the trial court lacked jurisdiction to enter income-withholding orders after the court’s plenary power over the 2008 divorce had expired. Appellee argues the trial court had authority to issue income-withholding orders as enforcement orders of the 2008 divorce decree. See Tex.R. Civ. P. 308. Appellant, however, argues the signing of an income-withholding order after the signing of the divorce decree would modify the divorce decree.
Trial courts have authority under their inherent authority and Texas Rule of Civil Procedure 308 to enforce their orders and decrees. See id.; Arndt v. Farris,
The divorce decree specifically provided that the contractual alimony provisions would be enforced through a withholding order. Appellant argues the signing of a withholding order would modify the divorce decree because the decree stated that the court had already signed the withholding order. Appellant acknowledges that “[n]o such order of income withholding, however, was signed by the trial court at that time.” In this case, the entry of a withholding order for contractual alimony after the court’s plenary power had expired would not modify the divorce decree because the decree expressly provided for enforcement through such an order. The fact that the decree incorrectly recited that such an order had been signed did not make the later issuance of a withholding order a modification of the decree.
Appellant cites Kee v. Kee,
We conclude the trial court did not lack jurisdiction to enter an order of income withholding for contractual alimony after its plenary power over the divorce decree expired. We overrule appellant’s second issue.
We next consider whether the trial court erred in the orders it issued. In his fourth issue, appellant contends the trial court erred in signing the July 10, 2009 Order of Income Withholding for Spousal Maintenance because the order modified the trial court’s judgment. Although the trial court, in this case, had authority to enforce the divorce decree through an order of income withholding for contractual alimony, the order it signed on July 10, 2009 was for income withholding for spousal maintenance. Spousal maintenance is paid when one spouse has a statutory duty to continue to support the other spouse after the divorce in the circumstances set forth in the statute. See Tex. Fam.Code Ann. §§ 8.051-.056 (West Supp. 2011). Spousal maintenance may be enforced through means not available for breach of contract, including contempt. See id. § 8.059; see also id. § 9.012(b) (West 2006) (“The court may not enforce by contempt an award in a decree of'divorce ... of a sum of money ... in the nature of debt....”). The trial court may not issue an order of income withholding for spousal maintenance to enforce a contractual alimony obligation. See Kee,
As discussed above, an order enforcing a judgment must be consistent with the original judgment and must not constitute a material change in the judgment. Katz,
In his fifth issue, appellant contends the court erred in issuing the February 5, 2010 Nunc Pro Tunc Order of Income Withholding for Contractual Alimony because there was no motion, notice, or hearing with respect to the order. No party had moved for the nunc pro tunc order, and the trial court did not give the parties any notice before entering the nunc pro tunc order. Texas Rule of Civil Procedure 316 provides,
Clerical mistakes in the record of any judgment may be corrected by the judge in open court according to the truth or justice of the case after notice of the motion therefor has been given to the parties interested in such judgment, as provided in Rule 21a, and thereafter the execution shall conform to the judgment as amended.
Tex.R. Civ. P. 316. A judgment nunc pro tunc entered without notice to the parties as required by rule 316 is a nullity. See Money of the United States in the Amount
CONCLUSION
We conclude the trial court had jurisdiction to sign orders of income withholding for contractual alimony to enforce the divorce decree. We also conclude the trial court did not err in denying appellant further offsets against his contractual alimony obligation. However, we conclude the trial court erred in signing the July 10, 2009 and February 5, 2010 income-withholding orders. Accordingly, we reverse the trial court’s judgment as to the July 10, 2009 and February 5, 2010 income-withholding orders, we vacate the trial court’s entry, of those orders, and we affirm the trial court’s judgment in all other respects. We remand the cause for further proceedings consistent with this opinion.
Notes
. Appellee’s counsel told the trial court that the taxes on the 401k account were $125,000.
. The copies of the mediated settlement agreement in the record are incomplete, lacking pages 7, 8, and 9. It appears that the agreement concerning the contractual alimo
