In order to achieve a complete and fair agreement, it is essential that you both fully disclose all of the assets and debts of the marriage. Hiding assets is against the law and will hurt you in the long run.
In one famous case, a woman named Denise Rossi won $1.3 million in the California State Lottery in 1996. She concealed the winnings from her husband of 25 years and filed for a divorce 11 days later. Two years after the divorce was finalized, her ex-husband discovered that she had won the lottery. He took her to court and the judge gave all of the $1.3 million dollar lottery winnings to the husband. Even if you haven’t won the lottery, concealing assets is not worth the risk.