Rule 46.SPECIAL MASTERS
Rule 46. SPECIAL MASTERS · Last amended 2015 · Last verified July 17, 2026
Full Text of Rule 46
Plain-English Summary
Rule 46 gives superior courts a way to bring in outside help — a special master — unless a statute provides otherwise for the case at hand. A court can appoint a master on its own motion or a party’s motion, for purposes ranging from duties the parties have agreed to, to pretrial and post-trial matters the court can’t handle efficiently on its own, to guidance on complex or specialized subjects like discovery technology, to monitoring compliance with court orders or settlements, to investigation, accounting, or supervising out-of-jurisdiction depositions. In exceptional cases, or where an accounting or difficult damages calculation calls for special expertise, a master may even hold trial proceedings and recommend findings of fact. A master can’t have any relationship to the parties or the case that would disqualify a judge, unless the parties consent after full disclosure, and the court has to weigh the fairness of the expense involved before making the appointment — an appointment that can’t deprive any party of access to the courts or the civil justice system. Once appointed, a master may also be removed or substituted by court order, whether on a party’s motion or the court’s own initiative.
Before a master takes office, the parties get notice and a chance to be heard, and the master has to file an affidavit disclosing any grounds for disqualification and certifying impartial service. The court’s order of appointment has to spell out the master’s duties and any limits on them, when the master can communicate with the court or a party outside the presence of the other side, what records the master keeps, how the master’s work will be reviewed, and how the master will be paid. Once appointed, the master can regulate proceedings, take evidence, hear motions, and impose noncontempt sanctions, while recommending contempt sanctions or sanctions against nonparties to the court.
A master’s orders go to the parties promptly, and the master reports to the court on motions submitted, rulings and findings made, evidence offered and its admissibility, and anything else the master thinks the court should know. Parties have twenty days to object to a report before it takes on the force of a court order. The court reviews factual findings de novo unless the parties agree to a clear-error standard, or to treat the findings of a consented-duty or efficiency master as final; legal conclusions always get de novo review; procedural rulings are reviewed only for abuse of discretion unless the appointment order says otherwise.
Compensation is set by the court in the appointment order, though the court can revise the basis and terms after notice and a hearing. Payment comes either from a party or parties, or from a fund or subject matter within the court’s control, and the court allocates that cost among the parties based on the size and nature of the dispute, the parties’ financial means, and how responsible each party was for needing a master in the first place.
Frequently Asked Questions
Can a special master be appointed without the parties agreeing to it?
Yes, in general — the court may appoint a master on the motion of any party or on its own motion. Consent is required only for a master appointed to perform duties the parties have specifically consented to.
Does a proposed special master have to disclose conflicts of interest?
Yes — before the order of appointment is entered, the master must file an affidavit disclosing any ground for disqualification and certifying that duties will be discharged without favor to, or prejudice against, any party.
How long do the parties have to object to a master’s order, report, or recommendations?
Twenty days from the date the order, report, or recommendations are served, unless the court sets a different time.
What standard of review applies to a master’s factual findings?
The court decides objections to factual findings de novo, unless the parties stipulate, with the court’s consent, to a clear-error standard, or to treat as final the findings of a master appointed to perform consented-to duties or to address matters the court couldn’t efficiently handle itself.
Who pays for a special master’s services?
Either a party or parties, or a fund or subject matter of the action within the court’s control, with the court allocating the cost after considering the nature and amount of the controversy, the parties’ means, and each party’s relative responsibility for the reference.
Amendment History
Adopted effective June 4, 2009; amended effective June 4, 2015.