Appeal from a judgment of the Supreme Court, Erie County (John F. O’Donnell, J.), entered October 14, 2011. The judgment, inter alia, equitably distributed the marital assets of the parties.
It is hereby ordered that the judgment so appealed from is unanimously modified on the law by directing defendant to obtain a life insurance policy with plaintiff as the beneficiary in *1138 the amount of $500,000 and to maintain that policy until the youngest child reaches the age of majority and the judgment is otherwise affirmed without costs.
Memorandum: Plaintiff appeals from certain parts of a judgment of divorce that, inter alia, directed defendant to pay to plaintiff the amount of $30,160 per year in child support and to pay his pro rata share of 80% of the children’s private school tuition. Contrary to plaintiff’s contention, we conclude that Supreme Court did not abuse its discretion in refusing to award child support on the parties’ combined income in excess of $130,000 (see Burns v Burns, 70 AD3d 1501, 1502 [2010]; Frost v Frost, 49 AD3d 1150, 1151 [2008]). In deciding to limit the child support award to the first $130,000 in combined parental income, the court properly considered the factors set forth in Domestic Relations Law § 240 (1-b) (f), including the fact that the divorce would not result in a change in the children’s standard of living (see Burns, 70 AD3d at 1502). Plaintiffs contention that the court erred in calculating the parties’ pro rata shares was raised for the first time in her reply brief and thus that contention is not properly before us on appeal (see Turner v Canale, 15 AD3d 960, 960 [2005], lv denied 5 NY3d 702 [2005]).
We reject plaintiffs contention that the court erred in ordering that defendant’s maintenance obligation be terminated on December 31, 2011. “ ‘As a general rule, the amount and duration of maintenance are matters committed to the sound discretion of the trial court’ ” (Frost, 49 AD3d at 1150-1151). We conclude that the court’s determination here to terminate maintenance on December 31, 2011 was not an abuse of discretion inasmuch as the court properly considered the factors set forth in Domestic Relations Law § 236 (B) (6) (a) (see Smith v Winter, 64 AD3d 1218, 1220 [2009], lv denied 13 NY3d 709 [2009]). Contrary to plaintiffs further contention, we conclude that the court did not abuse its discretion in directing that defendant was not obligated to begin paying his pro rata share of the children’s private high school tuition until January 1, 2012 (see generally Fruchter v Fruchter, 288 AD2d 942, 943 [2001]).
We also conclude that the court properly distributed the marital property. Plaintiff “ ‘failed to trace the source of the funds [that she contended were separate property] with sufficient particularity to rebut the presumption that they were marital property’ ” (Bailey v Bailey, 48 AD3d 1123, 1124 [2008]; see Bennett v Bennett, 13 AD3d 1080, 1082 [2004], lv denied 6 NY3d 708 [2006]). Contrary to plaintiff’s contention, the court did not abuse its discretion in determining the value of the marital *1139 home. “|V]aluation [of marital property] is an exercise properly within the fact-finding power of the trial courts, guided by expert testimony” (Burns v Burns, 84 NY2d 369, 375 [1994]). “ ‘Supreme Court has broad discretion in crediting the testimony of an expert witness’ in determining value” (Walasek v Walasek, 243 AD2d 851, 852-853 [1997]), and the court properly exercised its discretion when it credited the testimony of defendant’s expert concerning the estimated costs of making necessary repairs to the marital home.
We agree with plaintiff, however, that the court erred in failing to direct defendant to obtain a life insurance policy to secure his obligation for child support and his pro rata share of the children’s private school tuition (see Domestic Relations Law § 236 [B] [8] [a]; Corless v Corless, 18 AD3d 493, 494 [2005]). We therefore conclude that defendant is obligated to obtain a life insurance policy listing plaintiff as the beneficiary in the amount of $500,000 and to maintain that policy until the youngest child reaches the age of majority (see generally Corless, 18 AD3d at 494), and we modify the judgment accordingly. We have reviewed plaintiffs remaining contentions and conclude that they are without merit. Present — Smith, J.E, Valentino, Whalen and Martoche, JJ.