Gwen Erdahl appeals the decision of the tax court,
Erdahl v. Commissioner,
I.
In 1962, Gwen and Bruce Erdahl were married in Fargo, North Dakota. She was a high school graduate employed by a wholesale distributor and he was attending college on the GI bill. During the early years of their marriage, Mrs. Erdahl continued to work while her husband completed his undergraduate and medical degrees. In 1970, Mrs. Erdahl quit her job with Kelly Services to remain at home with their adopted infant son. In 1972, after fulfilling his internship and residency requirements, Dr. Erdahl began his practice as a radiologist in Sterling, Colorado. The Er-dahls then adopted their second child, a daughter.
Two years later, after an unspecified problem occurred with Dr. Erdahl’s practice, the Erdahls sold their home and everything they could not pack in their car and began a three-month search throughout the southwestern region of the United States for another radiology position. They ended up back in Colorado where Dr. Erdahl went into practice with another doctor in South Denver. In 1974, not satisfied with that practice, Dr. Erdahl moved his family to Boulder, where he began work at a clinic. In 1977, Dr. Erdahl filed for a divorce and moved into an apartment next to his girlfriend’s apartment. He put the family home up for sale and told Mrs. Erdahl that she and the children should move into HUD housing.
By 1978, the Erdahls had reconciled and moved to Wadena, Minnesota. There Dr. Erdahl established Wadena Radiology, P.A., a professional corporation. Dr. Er-dahl had promised Mrs. Erdahl that he would make her an officer in his newly-formed corporation. However, when he learned that the corporation needed only one officer to satisfy legal requirements, he took the position for himself and excluded Mrs. Erdahl from having anything to do with his corporation except to serve as a trustee of its pension plan. Dr. Erdahl was the sole employee of Wadena Radiology. Mrs. Erdahl remained at home caring for their children and managing the household expenses with the $1,500.00 monthly allowance Dr. Erdahl gave her. If Mrs. Erdahl needed additional money to buy a new dress or something of that sort, she had to ask her husband for the extra amount. He did not allow her to have any charge cards. Mrs. Erdahl had a personal checking account to pay the household expenses from her allowance. The Erdahls also had a joint checking account that the doctor used almost exclusively.
In 1981, Dr. Erdahl’s accountant, Charles Rowe, informed him about a tax-sheltered investment involving the purchase of an interest in Charleston Park, a Texas limited partnership organized to acquire a luxury condominium complex in Houston. Mr. Rowe provided Dr. Erdahl with the partnership’s prospectus and other promotional materials. To finance the investment of $60,000.00 for the partnership interest, Dr. Erdahl decided to borrow funds from his corporation’s pension plan. The pension plan had to be amended to permit the loan to be made, and the amendment to the plan required Mrs. Erdahl’s signature. Dr. Er-dahl testified that he discussed the Charleston Park investment and its tax advantages with Mrs. Erdahl on numerous occasions. When she asked whether the Texas condominiums actually existed, he replied, “Oh, yes. Trust me. Charlie Rowe knows all about this.” Joint Appendix at 131. Although Dr. Erdahl testified that he showed her the prospectus specifically calling her attention to the page summarizing the prospective tax benefits for the first six years of the investment, Mrs. Erdahl remembers seeing only a postcard addressed to her husband. On October 1, 1981, Dr. and Mrs. Erdahl signed the amendment allowing his corporation’s pension plan to make loans. In November 1981, Dr. Erdahl borrowed $30,000.00 from the plan, deposited that amount into the couple’s joint bank account, and made the initial $30,000.00 capital contribution to the partnership by check from the joint account. An additional capital contribution of $10,000.00 was made to the partnership by check in August 1982, after Dr. Erdahl borrowed that amount from the Wadena State Bank and deposited the funds into the joint account. *588 The final contribution of $20,000.00 was paid to the partnership in November 1982, again by check from the joint account, after Dr. Erdahl borrowed another $30,000.00 from his corporation's pension plan to repay the bank loan and to finance the final investment installment. Mrs. Erdahl believed that the total $60,000.00 investment in the Charleston Park partnership was part of her husband’s corporation and that their personal funds were not used to finance the investment.
During 1982, Dr. Erdahl was drinking, gambling, and keeping late hours. Mrs. Erdahl heard rumors that her husband had at least one girlfriend and perhaps two or three. The problems culminated on March 17, 1983, when Dr. Erdahl again left his wife and children and moved into a motel. Shortly afterwards, he moved into the family’s unfurnished lake home with his girlfriend. On March 31, 1983, two weeks after he had left his wife, Dr. Erdahl called on Mrs. Erdahl to obtain her signature on their joint income tax return for 1982. Like their 1981 return, the 1982 return had been prepared and signed by their accountant, Charles Rowe. On their 1982 return, the Erdahls reported, inter alia, income in the amount of $176,661.00 from Dr. Er-dahl’s salary and a loss in the amount of $68,211.00 from the Charleston Park partnership, which reduced their joint tax liability by $34,106.00. 1 Dr. Erdahl testified that he went over the reported deductions with Mrs. Erdahl to ensure that none had been omitted. He also testified that, as he had done the previous year, he explained to Mrs. Erdahl that they were entitled to a refund because of the Charleston Park partnership. Both Dr. and Mrs. Erdahl signed the 1982 tax return.
On October 23, 1984, Dr. Erdahl divorced Mrs. Erdahl. His share of the property settlement included the family’s principal residence, his radiology corporation, and the Charleston Park partnership interest. Mrs. Erdahl and her children moved into a smaller home. Mrs. Erdahl was awarded maintenance in the amount of $1,500.00 a month from Dr. Erdahl until she reached the age of 60 in 1995.
On February 3, 1988, the Commissioner mailed a joint notice of tax deficiency to Dr. and Mrs. Erdahl informing them that the deduction claimed on their 1982 return relating to the partnership loss was disallowed. The Erdahls conceded that the tax deficiency and additions determined by the Commissioner were correct, but Mrs. Er-dahl petitioned the tax court for relief from liability under the innocent spouse provision of the Internal Revenue Code. 26 U.S.C. § 6013(e). She and the IRS stipulated that: 1) the Erdahls had filed a joint return for the 1982 tax year, § 6013(e)(1)(A); and 2) the disallowed partnership loss was a “grossly erroneous item” resulting in “a substantial understatement of tax,” § 6013(e)(1)(B). At trial, the remaining issues were whether Mrs. Erdahl knew or had reason to know of the substantial understatement at the time she signed the return, § 6013(e)(1)(C), and whether it would be inequitable to hold her liable for the tax deficiency taking into account all the facts and circumstances, § 6013(e)(1)(D). The tax court decided that Mrs. Erdahl was not entitled to innocent spouse relief because she “knew or had reason to know of the underlying circumstances which gave rise to the disallowed losses.”
Mrs. Erdahl urges us to hold that the tax court erred as a matter of law in its interpretation of section 6013(e)(1)(C) and in its failure to decide whether it would be inequitable to hold her liable for the deficiency resulting from the disallowed deduction.
II.
Congress enacted section 6013(e) to shield an innocent spouse from tax liability
*589
resulting from erroneous items reported on a joint return by the other spouse. “[T]he statute was passed as an exception to the normal rule of joint and several liability.”
Sanders v. United States,
This is the first opportunity our circuit has. had to construe the statutory lack of knowledge requirement in the context of a disallowed deduction case. Other courts that have addressed this issue have arrived at a variety of interpretations.
2
This lack of uniformity may stem from the development of section 6013(e). In its original version, the statute offered relief only in cases involving tax deficiencies resulting from omitted items of income.
See
Act of Jan. 12, 1971, Pub.L. No. 91-679, 84 Stat. 2063 (codified as amended at 26 U.S.C. § 6013(e) (1976)). The provision did not encompass “deductions or credits that were erroneously claimed by the culpable spouse.”
Stevens v. Commissioner,
In omission cases, the test of knowledge asks whether a taxpayer knew or should have known of an income-producing transaction that his or her spouse has not reported on the joint return.
Quinn v. Commissioner,
*590
The standard we adopt asks a question different from the query posed by the tax court: “whether [Mrs. Erdahl] knew or had reason to know of the underlying circumstances which gave rise to the disallowed losses.”
The standard we adopt for innocent spouse cases asks whether “a reasonably prudent taxpayer under the circumstances of the spouse at the time of signing the return could be expected to know that the tax liability stated was erroneous or that further investigation was warranted.”
Stevens,
The only findings made by the tax court concerning the state of Mrs. Erdahl’s knowledge were that she knew: 1) “that the transaction was intended to achieve handsome tax benefits,” and 2) “that significant losses were claimed on the tax return.”
Notes
. The Erdahls had claimed a similar deduction of $62,545.00 as a loss from the Charleston Park partnership on their joint tax return for 1981. This deduction was not challenged by the Internal Revenue Service.
. E.g., Stevens v. Commissioner,
. Section 424(c) of the Deficit Reduction Act of 1984 provides for retroactive application of the amendments to all open tax years to which the Internal Revenue Code of 1954 applies. H.R. Rep. No. 98-432, 98th Cong., 2d Sess., pt. 2, at 1503, reprinted in 1984 U.S.Code Cong. & Admin.News 697, 1144.
. We discern no difference between the test we adopt from the Ninth Circuit and the test articulated by the Eleventh Circuit, the only other circuit that has interpreted the lack of knowl
*590
edge requirement in the context of deduction cases, in
Stevens,
. The tax court relies on its opinion in
Bokum v. Commissioner,
. "Obviously, the more a spouse knows about a transaction,
ceteris paribus,
the more likely it is that she will know or have reason to know that the deduction arising from that transaction may not be valid.”
Price,
. If a spouse has questioned the underlying transaction (or the deductions based on that transaction) previously and has received assurances as to its (or their) legitimacy, she need not repeat her queries at the time she is presented with the return, unless the return arrives with red flags flying,
e.g.,
the omission of the preparer's signature.
See Bokum,
. Mrs. Erdahl’s other argument on appeal — that the tax court erred as a matter of law in failing to decide whether it would be inequitable to hold her liable for the tax deficiency — is without merit. Because section 6013(e) is written in the conjunctive, all of its requirements must be met for the taxpayer to be eligible for innocent spouse relief. Because the tax court decided that Mrs. Erdahl failed to satisfy the lack of knowledge requirement under section 6013(e)(1)(C), it did not reach her section 6013(e)(1)(D) argument relating to the inequity of holding her liable for the deficiency. Although the tax court could have made a determination of the inequity issue for the sake of "completeness,”
see Krause v. Commissioner,
