Saying they "can no longer support the family's former standard of living," Manhattan state Supreme Court Justice David Saxe on Friday told Culkin's estranged parents to cut their monthly expenses in half.
The couple told the court they spend about $30,000 per month on themselves and their children.
"Home Alone" child star Macaulay Culkin, who has said he is willing to dip into his fortune to save his parents from financial ruin, is worth an estimated $17 million. His money remains off-limits to his parents.
The sole source of income for his parents, who never married, is the 15 percent commission they take for managing his acting career and acting work by Culkin siblings, which earned them nothing so far in 1996.
The 16-year-old actor has said he will not resume his Hollywood career until his parents' legal battles conclude.
Macaulay Culkin may need to support his parents' $30,000 per month lifestyle.