(a) Depositions for use at a hearing may be taken, with the written approval of the Administrative Law Judge, by either the Director of Practice or the respondent or their duly authorized representatives. Depositions may be taken before any officer duly authorized to administer an oath for general purposes or before an officer or employee of the Internal Revenue Service who is authorized to administer an oath in internal revenue matters.

(b) The party taking the deposition must provide the deponent and the other party with 10 days written notice of the deposition, unless the deponent and the parties agree otherwise. The notice must specify the name of the deponent, the time and place where the deposition is to be taken, and whether the deposition will be taken by oral or written interrogatories. When a deposition is taken by written interrogatories, any cross-examination also will be by written interrogatories. Copies of the written interrogatories must be served on the other party with the notice of deposition, and copies of any written cross-interrogation must be mailed or delivered to the opposing party at least 5 days before the date that the deposition will be taken, unless the parties mutually agree otherwise. A party on whose behalf a deposition is taken must file the responses to the written interrogatories or a transcript of the oral deposition with the Administrative Law Judge and serve copies on the opposing party and the deponent. Expenses in the reporting of depositions will be borne by the party that requested the deposition.