The debts of a deceased in the ordinary course of administration include all liabilities which his estate would be liable to discharge - present, future, contingent or unascertained (see Commissioner of Stamps (W.A.) v. West Australian Trustee, Executor and Agency Co.[1]). The deduction of such liabilities for the purposes of Acts relating to probate duties necessarily depends upon the precise terms of the Acts themselves (cf. In the Will of Kininmonth[2]). Sec. 107 of the New South Wales Act, in the first sub-section, only permits a deduction of debts "actually due and owing by" the deceased "at the time of his death." Such a phrase includes, no doubt, debts debita in præsenti solvenda in futuro, but it would not include money payable on the happening of a contingency or some future event (O'Driscoll v. Manchester Insurance Committee[3]; Mack v. Commissioner of Stamp Duties (N.S.W.)[4]). The future liability to pay an annuity is not a debt actually due and owing (In re Robertson[5]); the annuitant could not sue for it, and the right to each payment depends upon the continuance of his life. But sub-sec. 2 (d) of sec. 107, it is said, permits, as a necessary implication, the allowance of contingent debts that are capable of estimation. In terms, however, the sub-section does not so provide, and the suggested construction would, quite contrary to the provisions of sub-sec. 1, turn the prohibition of an allowance into the permission of an allowance; in other words, would not construe the Act at all but would alter it, and indeed would warrant, we would think, the conclusion that all debts not within the prohibition of sub-sec. 2 may be treated as debts actually due and owing for the purposes of sub-sec. 1. But to our mind the obvious purpose of sub-sec. 2 (d) is not to enlarge sub-sec. 1 but to reinforce it and illustrate its meaning. We do not at all dissent from the view that sub-sec. 2 (d) treats contingent debts as specifically of a character incapable of estimation and then proceeds to cover generally other debts which in the opinion of the Commissioner are incapable of estimation. But we prefer to rest our opinion upon a more general view of the meaning of the whole section.