MEGABUCKS Janet Jack­son has cut ties with her freeloading brothers, sources say.

In the past, 47-year-old Janet’s big brother Michael reportedly kept the extended Jackson clan afloat.

But since the King of Pop’s untime­ly death, his reportedly cash-strapped brothers have sought help from Ja­net – who it was recently revealed has grossed a bil­lion dollars from concert tours, acting gigs, album sales and corporate spon­sorships.

“Janet has been very generous whenever one of her family came to her for a handout,” a source told The ENQUIRER.

“But it seemed like the money she gave them was never enough, and it was only a matter of time be­fore Janet felt like she was being taken advantage of. Eventually, Janet had to change her phone number so that her mom, Katherine, was the only family member with direct ac­cess to her. But now Janet’s brothers try to get to her through their mom!”

The “What Have You Done For Me Lately” singer revealed in Feb­ruary that she had secretly married Middle East business tycoon Wissam Al Mana, who’s nine years her junior.

“He wants Janet to cut off her family and he supports her deci­sion one hundred percent,” says the insider. Of Janet’s siblings, her five brothers – Jackie, 62, Tito, 59, Jermaine, 58, Marlon, 56, and Randy, 51 – are the most demanding, a source says.

“They’ve asked Ja­net to help them with everything from late child-support payments to home foreclosures and tax liens,” the source said. “But now she’s drawn a line and let them know enough is enough.”

Meanwhile, 83-year-old clan matriarch Katherine stands to hit the jackpot if she wins a $40 billion wrongful death suit against concert promoter AEG Live. She claims the company failed to properly investigate and supervise the doctor hired to care for Michael in connection with the singer’s ill-fated “This Is It” come­back tour.

“If Katherine collects just a small portion of that claim against AEG, there’s no doubt her sons will be lined up at her doorstep with their hands out,” the source says. “But the good news is a windfall for Kath­erine will take some of the pressure off of Janet!”