Abatement of debts and legacies is a common law doctrine of wills that holds that when the equitable assets of a deceased person are not sufficient to satisfy fully all the creditors, their debts must abate proportionately, and they must accept a dividend.
In the case of legacies when the funds or assets out of which they are payable are not sufficient to pay them in full, the legacies abate in proportion, unless there is a priority given specially to any particular legacy. Annuities are also subject to the same rule as general legacies.
The order of abatement usually goes as follows:
A general devise, is a monetary gift to a specific person to be satisfied out of the overall estate. For example, if James's will states that he is leaving $500,000 to his son Sam then the money would be a general devise.
A residual devise is one left to a devisee after all specific and general devices have been made. For example James's will might say: "I give all the rest, residue and remainder of my estate to my daughter Lilly." Lilly would be the residual devisee.