5 Exceptions to the general rule in the field of probate litigation were identified in Re Estate of Hodges; Shorter v Hodges (1988) 14 NSWLR 698 at 709 - 710 by Powell J:
Costs are, of course, in the discretion of the court, but that discretion, being a judicial, and not an unfettered, one must be exercised in accordance with established principle.
The general principle to be applied in adversary litigation is that costs follow the event, those costs being taxed on a party and party basis. However, over the years, a number of exceptions to this general rule have come to be recognised. In the field of probate litigation, two such exceptions have come to be recognised, they being:
1. where the testator has, or those interested in residue have, been the cause of the litigation, the costs of unsuccessfully opposing probate may be ordered to be paid out of the estate;
2. if the circumstances led reasonably to an investigation in regard to the document propounded, the costs may be left to be borne by those who respectively incurred them: see, eg, Mitchell and Mitchell v Gard and Kingwell (1863) 3 Sw & Tr 278; 164 ER 1280; Orton v Smith (1873) LR 3 P & D 23; Wilson v Bassil [1903] P 239; Spiers v English [1907] P 122; Kenny v Wilson ; In the Estate of Holtam; Gillett v Rogers (1913) 108 LT 732.
To these exceptions to the general principle should, perhaps, be added the principle that, although a legal personal representative may be entitled to recover from a party to litigation costs only on a party and party basis, he, as a fiduciary, retains the right to an indemnity from the estate, and, thus, may have recourse to the estate for any difference between his costs on a trustee basis and the costs recovered from a party.