Russell Brand filed final divorce papers yesterday and reportedly doesn't want any of estranged wife Katy Perry's earnings.

The British comedian announced he and Katy were splitting up at the end of last year. According to US website TMZ, the pair didn't sign a pre nuptial agreement and as a result, Russell is entitled to approximately $20 million of Katy's fortune.

However, sources say the star will not take any of her cash.

"This divorce is as amicable as it gets, and Russell was a mensch [Yiddish for a good person]," the insider told TMZ.

Russell's lawyer filed final papers to officially end the former couple's marriage on Tuesday. However, the divorce won't be finalised until June 30, because of the required six month waiting period.

Katy and Russell's union lasted for just 14 months after they tied the knot in October 2010. Because of the absent pre-nup the pair are entitled to 50 per cent of each other's earnings as a result of community property rights.

Katy made $44 million between May 2010 and May 2011 according to Forbes. The songstress has just been on the road for a year with her California Dreams tour.