Jessica Simpson's parents are reportedly fighting over financial rewards from their divorce.

The singer-and-actress's mother Tina and father Joe separated last September after 35 years of marriage, and the showbiz patriarch is said to be keen to move their case from Texas to Los Angeles as he believes the no-fault state will look upon his indiscretions - such as being found guilty of driving under the influence (DUI) - more favorably and give him a better financial outcome.

Although Tina has already offered Joe $100 million of her $300 million fortune, her estranged husband - who manages both Jessica and his other daughter Ashlee Simpson - still wants more, including a bigger share of the profits gained from Jessica's clothing line The Jessica Simpson Collection.

"Joe's desperate to get his hands on the pot of gold and is pushing his lawyers to move the case to Los Angeles. Texas is both a fault and a no-fault divorce state, so he's concerned that Tina may be favored by a judge there, after all she was the one that filed and is seemingly the wronged party. So, by moving the divorce to California, which is a no-fault divorce state only, Joe thinks he will likely get more sympathetic treatment and hopefully a larger chunk of Tina's wealth. Joe wants a more even distribution of the wealth. Tina has already offered him a settlement of around $100 million, but Joe is holding out for even more," a source said.

Following their break-up Joe has denied a number of gay sex allegations, but Tina stated their marriage ended when it became "insupportable because of discord or conflict of personalities."