"(2) The second requirement is that the wife is a volunteer. It is not sufficient that the wife has received consideration as would be recognised in the law of contract: Bank of Victoria Ltd v Mueller (at 649). The consideration for the guarantee must be of 'real benefit' to the wife: Garcia (at 412). Incidental benefit which accrues generally to the family of which the wife is a member is not sufficient benefit to render a transaction which does not otherwise contain a 'real benefit,' non-voluntary: Armstrong v Commonwealth Bank of Australia (unreported, 17 June 1999, New South Wales Supreme Court, per Hamilton J), Cranfield Pty Ltd v Commonwealth Bank of Australia (unreported, 20 November 1998, Supreme Court of Victoria, per Mandie J). Where the wife expects to reap direct profit from the transaction, the transaction cannot be said to be voluntary: State Bank of New South Wales Ltd v Vecchio (Unreported, 10 November 1998, New South Wales Supreme Court, per Kirby J). Neither can it be said to be voluntary where the moneys secured by the guarantee are used to purchase an asset in which the wife is equally interested with her husband: Commonwealth Bank of Australia v Khouri (Unreported, 4 November 1998, Supreme Court of Victoria, per Harper J). However, where the interest of the wife is a shareholding in the company through which her husband conducted his business and in which she has no real involvement, then a guarantee given by the wife over that company's debts will be voluntary: Commonwealth Bank of Australia v Khouri (supra). But where the wife has an active and substantial interest in the conduct of, and the fortunes of, the business run by her husband, she will not be a volunteer in relation to any guarantee over the debts of that business: Radin v Commonwealth Bank of Australia (Unreported, 23 October 1998, Federal Court of Australia, per Lindgren J). Where the transaction is not ex facie for the benefit of the wife, then the onus will lie on the party seeking to enforce the security to show that the wife was not, relevantly, a volunteer: Warburton v Whiteley p1989] NSW ConvR 55-453 at 58, 288 per McHugh JA."