Former Billabong chief executive Matthew Perrin has lost an appeal to overturn his fraud conviction.
Perrin was sentenced in January to eight years in jail over the forging of his then-wife's signature to access more than $13 million from the Commonwealth Bank.
The Court of Appeal knocked back his appeal against his conviction, but will allow him to appeal his sentence.
The 44-year-old will be eligible for parole in June 2020.
Perrin's trial heard that in 2008 he forged his wife's signature to mortgage the family home, which was solely in his wife's name, in order to pay off large debts that had accumulated from failed business deals.
He admitted to signing his wife's name on bank documents, but claimed he had her permission.
In December 2016 he was found guilty of 12 counts of fraud and forgery, but prosecutors chose to drop three of the charges.
The former multi-millionaire surf wear boss committed the offences after a series of failed investments left him facing financial ruin.
He was declared bankrupt in 2009.
