Cyclone Drilling, Inc. (taxpayer) appeals from the district court’s Order of Dismissal (With Findings), which denied taxpayer the injunction it sought against Michael J. Kelly, District Director of Internal Revenue Service for the Cheyenne District (Mr. Kelly was sued in his official capacity; the defendant in this case will hereinafter be referred to as “the IRS”). Thе IRS’s motion to dismiss was filed pursuant to Fed.R. Civ.P. 12. Inasmuch as the motion was based on affidavits and other documents outside the pleadings, the district court properly treаted the motion as one for summary judgment under Fed.R.Civ.P. 56.
See
Fed.R.Civ.P. 12(b);
Adams v. Campbell County School District,
Taxpayer sought an injunction barring the IRS from collecting an allegedly void assessment of tax deficiency. The deficiency represented underpayments in taxpayer’s corporate income tax for the years 1979 and 1980. Under 26 U.S.C. § 6212, the IRS is required to send a “Notice of Deficiency” to the taxpayer’s “last known address” before an assessment сan be made. (If the taxpayer acquires timely
actual notice
of the deficiency, which is not the case here, the “last known address” requirement no longer pertains.
Pugsley v. Commissioner,
We are presented with a single issue in this appeal: Did the district court err in its *664 finding that no issue of material fact existed with respect to the question whether the IRS sent the Notiсe of Deficiency to taxpayer’s “last known address”?
In order to ascertain what facts are material to the “last known address” determination, we must first definе the term “last known address” itself. The term is not defined in either the statutes or the regulations; its definition has instead been accomplished by a substantial body of case law. Fundamentally, the term means “that address to which the IRS reasonably believes the taxpayer wishes the notice sent.”
United States v. Ahrens,
In general, “[t]he relevant inquiry pertains to the IRS’s knowledge rather than to what may in fact bе the taxpayer’s most current address in use.”
Alta Sierra Vista, Inc. v. Commissioner,
The IRS is, however, required to use “reasonable diligence” in attempting to ascertain the taxpayer’s correct address.
Id., Cool Fuel, Inc. v. Connett,
Within these general principles, the “last known address” determination is a factual question to be resolved upon the facts and circumstances of each particular case.
McPartlin v. Commissioner,
We now review the facts and documents that were before the district court at the time the IRS’s motion for dismissal/summary judgment was granted. Before June, 1981, taxpayеr used P.O. Box 246 in Gillette, Wyoming. Taxpayer’s return for the 1978 tax year, received by the IRS on December 20, 1979, bore the P.O. Box 246 return address. R. at 40. Taxpayer’s return for the 1979 tax yeаr, received by the IRS on October 17, 1980, likewise bore the P.O. Box 246 return address. R. at 41. These were the returns for the “years in question”; i.e., the years for which a tax deficiency had been determined.
*665
In June, 1981, taxpayer changed to the new address of P.O. Box 908, Gillette, Wyoming. After this date, however, taxpayer used the old P.O. Box 246 return address on two documents sent to the IRS. These documents were: (1) a Form 872, Consent to Extend the Time to Access Tax, received by the IRS on November 23,
The IRS used taxpayer’s P.O. Box 908 address some 15 times in correspondence concerning unrelated employee withholding matters between October 28,1981 and June 10, 1982. R. at 83-97. Nevertheless, the IRS sent taxpаyer its 30-day Notice of Deficiency, dated May 6, 1982, to P.O. Box 246. R. at 44-45. This notice was apparently neither received nor returned. The IRS followed with a 90-day Noticе of Deficiency, dated July 23, 1982, which was also sent to P.O. Box 246. R. at 48. This notice was returned to the IRS marked “forward expired.” R. at 48-49. The IRS’s Final Notice, dated April 29, 1983, was sent to P.O. Box 908. R. at 19.
Taxpayer filed its complaint in the district court on January 17, 1984. R. at 1-4. The IRS’s Answer was filed March 19, 1984. R. at 24. On May 21, 1984, taxpayer served upon the IRS a set of interrogatories, inquiring as to the methods used by IRS in ascertaining taxpayer’s address on various correspondence and requesting production of any pertinent IRS procеdural manuals. R. at 55-61. The IRS responded on June 8, 1984 with a Motion For Protective Order. R. at 52-54. This was followed on June 14 by the IRS’s Motion to Dismiss or for Summary Judgment. R. at 25-26. After consideration of the various memoranda and affidavits submitted by the parties, the court granted the IRS’s Motion to Dismiss by its Order of Dismissal (With Findings) on August 16, 1984. R. at 111— 115. The court did not rule on the IRS’s Motion for Protective Order; thus, taxpayer did not receive the discovery material requested.
On the basis of this factual record, we must hold that an issue of material fact remainеd on the question of taxpayer’s “last known address.” The court’s grant of summary judgment was therefore premature.
When we view the factual evidence and pеrmissible inferences therefrom in the light most favorable to the non-moving party, as we must,
Brown v. Parker-Hannifin Corp.,
We express no view on the merits of this case. Both parties have used both addresses after taxpayer’s address сhanged to P.O. Box 908. Under such circumstances, the “last known address” determination should be made only after a complete consideration of all pertinent facts and reasonable *666 inferences. The case is remanded for further proceedings consistent with this opinion.
REVERSED AND REMANDED.
