[Code of Federal Regulations]
[Title 26, Volume 2]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR1.166-1]

[Page 910-912]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 1_INCOME TAXES--Table of Contents
 
Sec. 1.166-1  Bad debts.

    (a) Allowance of deduction. Section 166 provides that, in computing 
taxable income under section 63, a deduction shall be allowed in respect 
of bad debts owed to the taxpayer. For this purpose, bad debts shall, 
subject to the provisions of section 166 and the regulations thereunder, 
be taken into account either as--
    (1) A deduction in respect of debts which become worthless in whole 
or in part; or as
    (2) A deduction for a reasonable addition to a reserve for bad 
debts.

[[Page 911]]

    (b) Manner of selecting method. (1) A taxpayer filing a return of 
income for the first taxable year for which he is entitled to a bad debt 
deduction may select either of the two methods prescribed by paragraph 
(a) of this section for treating bad debts, but such selection is 
subject to the approval of the district director upon examination of the 
return. If the method so selected is approved, it shall be used in 
returns for all subsequent taxable years unless the Commissioner grants 
permission to use the other method. A statement of facts substantiating 
any deduction claimed under section 166 on account of bad debts shall 
accompany each return of income.
    (2) Taxpayers who have properly selected one of the two methods for 
treating bad debts under provisions of prior law corresponding to 
section 166 shall continue to use that method for all subsequent taxable 
years unless the Commissioner grants permission to use the other method.
    (3)(i) For taxable years beginning after December 31, 1959, 
application for permission to change the method of treating bad debts 
shall be made in accordance with section 446(e) and paragraph (e)(3) of 
Sec. 1.446-1.
    (ii) For taxable years beginning before January 1, 1960, application 
for permission to change the method of treating bad debts shall be made 
at least 30 days before the close of the taxable year for which the 
change is effective.
    (4) Nothwithstanding paragraphs (b) (1), (2), and (3) of this 
section, a dealer in property currently employing the accrual method of 
accounting and currently maintaining a reserve for bad debts under 
section 166(c) (which may have included guaranteed debt obligations 
described in section 166(f)(1)(A)) may establish a reserve for section 
166(f)(1)(A) guaranteed debt obligations for a taxable year ending after 
October 21, 1965 under section 166(f) and Sec. 1.166-10 by filing on or 
before April 17, 1986 an amended return indicating that such a reserve 
has been established. The establishment of such a reserve will not be 
considered a change in method of accounting for purposes of section 
446(e). However, an election by a taxpayer to establish a reserve for 
bad debts under section 166(c) shall be treated as a change in method of 
accounting. See also Sec. 1.166-4, relating to reserve for bad debts, 
and Sec. 1.166-10, relating to reserve for guaranteed debt obligations.
    (c) Bona fide debt required. Only a bona fide debt qualifies for 
purposes of section 166. A bona fide debt is a debt which arises from a 
debtor-creditor relationship based upon a valid and enforceable 
obligation to pay a fixed or determinable sum of money. A debt arising 
out of the receivables of an accrual method taxpayer is deemed to be an 
enforceable obligation for purposes of the preceding sentence to the 
extent that the income such debt represents have been included in the 
return of income for the year for which the deduction as a bad debt is 
claimed or for a prior taxable year. For example, a debt arising out of 
gambling receivables that are unenforceable under state or local law, 
which an accrual method taxpayer includes in income under section 61, is 
an enforceable obligation for purposes of this pargarph. A gift or 
contribution to capital shall not be considered a debt for purposes of 
section 166. The fact that a bad debt its not due at the time of 
deduction shall not of itself prevent is allowance under section 166. 
For the disallowance of deductions for bad debts owed by a political 
party, see Sec. 1.271-1.
    (d) Amount deductible--(1) General rule. Except in the case of a 
deduction for a reasonable addition to a reserve for bad debts, the 
basis for determining the amount of deduction under section 166 in 
respect of a bad debt shall be the same as the adjusted basis prescribed 
by Sec. 1.1011-1 for determining the loss from the sale or other 
disposition of property. To determine the allowable deduction in the 
case of obligations acquired before March 1, 1913, see also paragraph 
(b) of Sec. 1.1053-1.
    (2) Specific cases. Subject to any provision of section 166 and the 
regulations thereunder which provides to the contrary, the following 
amounts are deductible as bad debts:
    (i) Notes or accounts receivable. (a) If, in computing taxable 
income, a taxpayer values his notes or accounts receivable at their fair 
market value when received, the amount deductible

[[Page 912]]

as a bad debt under section 166 in respect of such receivables shall be 
limited to such fair market value even though it is less than their face 
value.
    (b) A purchaser of accounts receivable which become worthless during 
the taxable year shall be entitled under section 166 to a deduction 
which is based upon the price he paid for such receivables but not upon 
their face value.
    (ii) Bankruptcy claim. Only the difference between the amount 
received in distribution of the assets of a bankrupt and the amount of 
the claim may be deducted under section 166 as a bad debt.
    (iii) Claim against decedent's estate. The excess of the amount of 
the claim over the amount received by a creditor of a decedent in 
distribution of the assets of the decedent's estate may be considered a 
worthless debt under section 166.
    (e) Prior inclusion in income required. Worthless debts arising from 
unpaid wages, salaries, fees, rents, and similar items of taxable income 
shall not be allowed as a deduction under section 166 unless the income 
such items represent has been included in the return of income for the 
year for which the deduction as a bad debt is claimed or for a prior 
taxable year.
    (f) Recovery of bad debts. Any amount attributable to the recovery 
during the taxable year of a bad debt, or of a part of a bad debt, which 
was allowed as a deduction from gross income in a prior taxable year 
shall be included in gross income for the taxable year of recovery, 
except to the extent that the recovery is excluded from gross income 
under the provisions of Sec. 1.111-1, relating to the recovery of 
certain items previously deducted or credited. This paragraph shall not 
apply, however, to a bad debt which was previously charged against a 
reserve by a taxpayer on the reserve method of treating bad debts.
    (g) Worthless securities. (1) Section 166 and the regulations 
thereunder do not apply to a debt which is evidenced by a bond, 
debenture, note, or certificate, or other evidence of indebtedness, 
issued by a corporation or by a government or political subdivision 
thereof, with interest coupons or in registered form. See section 
166(e). For provisions allowing the deduction of a loss resulting from 
the worthlessness of such a debt, see Sec. 1.165-5.
    (2) The provisions of subparagraph (1) of this paragraph do not 
apply to any loss sustained by a bank and resulting from the 
worthlessness of a security described in section 165(g)(2)(C). See 
paragraph (a) of Sec. 1.582-1.

[T.D. 6500, 25 FR 11402, Nov. 26, 1960, as amended by T.D. 6996, 34 FR 
835, Jan. 18, 1969; T.D. 7902, 48 FR 33260, July 21, 1983; T.D. 8071, 51 
FR 2479, Jan. 17, 1986]