Before they were married, Jessica refused to sign a pre-nuptial agreement so both she and Nick were entitled to 50 per cent of their joint earnings, mainly generated from the hugely popular MTV show 'Newlyweds'.
The 'Dukes of Hazzard' actress reportedly began by offering Nick a measly $1.5 million share of their fortune.
The amount is believed to have been suggested by Jessica's father and manager Joe Simpson, who didn't believe his former son-in-law had the stomach to put up a battle in court for his rightful share.
According to website TMZ.com, Nick will receive more than the original $1.5 million offered, but has agreed to accept less than 50 per cent in the settlement, to avoid a messy court case.
A friend of Nick's said: "Nick agreed to end the dispute because he doesn't want anyone to get hurt."
A figure has now been agreed but is yet to be filed in court.
Since the split Jessica has been unlucky in love while Lachey is enjoying a happy relationship with MTV presenter Vanessa Mannillo.

Star Magazine reports, Nick Lachey sees a strong future with new love Vanessa Minillo, and is planning a move from his home in L.A. to NYC’s trendy Tribeca area in lower Manhattan. Vanessa, tired of L.A. and unexpected run-in’s with Nick’s ex-lover Jessica Simpson, is thrilled by the news.

Nick wants to move in with Minillo and is excited about taking their relationship to the next level. Nick is also investigating Broadway musical roles to combine his singing and acting talents. However, Nick’s rep does not confirm his plans for a cross-coastal move.