Jolie's attorneys claimed in the filing that the former couple had "informal arrangements" for the payment of the children's expenses, but stated that Pitt had not adhered to those guidelines.
A source familiar with the situation told InStyle, "Brad fulfills his commitments".
Per NBC News, the court filing did not define what is "meaningful" support.More news: Ontario to offer 'non-financial incentives' to brewers for buck-a-beer
The divorce filing, citing irreconcilable differences, triggered a bitter custody dispute during which Pitt was investigated and cleared of child abuse.
Angelina Jolie Pitt says she wants her divorce from Brad Pitt finalised before the end of the year.
Angelina Jolie on Tuesday sought to move forward with her long and sometimes bitter divorce from Brad Pitt, which has yet to be finalized after nearly two years.
The documents acknowledge that the duo had an "informal arrangement", but that Pitt has not lived up to that agreement.More news: Assad's chemical war expert dies in vehicle blast
In court documents obtained by The Blast, the judge explained that "not having a relationship with their father is harmful to [the children]", and added that "it is critical that each of them have a healthy and strong relationship with their father and mother". They have six children for whom she is seeking primary custody. Jolie has sought sole custody of the children. Their eldest son Maddox was adopted from Cambodia in 2002.
Meanwhile, another source told HollywoodLife that Jolie keeps "changing the rules" despite Pitt doing his best to be responsible for his family.
Pitt and Jolie also have three children together, biologically: their daughter Shiloh was born in 2006, and their twins Knox and Vivienne were born in 2008.
People close to Pitt think that Jolie pre-emptively filed the papers as a warning shot, because Pitt had told her he wanted to restart the formal divorce process.More news: Former campaign aide to Trump testifies he committed crimes with Manafort
The "Moneyball" actor said in an interview a year ago that he had quit drinking, was undergoing therapy and that he and Jolie had made a decision to abandon "vitriolic hatred" and work together to sort out their issues.