1079. Liabilities taken into account.

Except as otherwise provided1, in determining the value of a person's estate at any time his liabilities at that time are to be taken into account2 but, except in the case of a liability imposed by law3, only to the extent that they were incurred for a consideration in money or money's worth4. A liability in respect of which there is a right to reimbursement is taken into account only to the extent, if any, that reimbursement cannot reasonably be expected to be obtained