[Code of Federal Regulations]
[Title 26, Volume 13]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR]

[Page 510-512]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
Procedure and Administration--Table of Contents
 
Sec.  1.6664-3  Ordering rules for determining the total amount of 
penalties imposed.

    (a) In general. This section provides rules for determining the 
order in which adjustments to a return are taken into account for the 
purpose of computing the total amount of penalties imposed under 
sections 6662 and 6663, where--
    (1) There is at least one adjustment with respect to which no 
penalty has been imposed and at least one with respect to which a 
penalty has been imposed, or
    (2) There are at least two adjustments with respect to which 
penalties have been imposed and they have been imposed at different 
rates.

This section also provides rules for allocating unclaimed prepayment 
credits to adjustments to a return.
    (b) Order in which adjustments are taken into account. In computing 
the portions of an underpayment subject to penalties imposed under 
sections 6662 and 6663, adjustments to a return are considered made in 
the following order:
    (1) Those with respect to which no penalties have been imposed.
    (2) Those with respect to which a penalty has been imposed at a 20 
percent rate (i.e., a penalty for negligence or disregard of rules or 
regulations, substantial understatement of income tax, or substantial 
valuation misstatement, under sections 6662(b)(1) through 6662(b)(3), 
respectively).
    (3) Those with respect to which a penalty has been imposed at a 40 
percent rate (i.e., a penalty for a gross valuation misstatement under 
sections 6662 (b)(3) and (h)).
    (4) Those with respect to which a penalty has been imposed at a 75 
percent rate (i.e., a penalty for fraud under section 6663).
    (c) Manner in which unclaimed prepayment credits are allocated. Any 
income tax withholding or other payment made before a return was filed, 
that was neither claimed on the return nor previously allowed as a 
credit against the tax liability for the taxable year

[[Page 511]]

(an ``unclaimed prepayment credit''), is allocated as follows--
    (1) If an unclaimed prepayment credit is allocable to a particular 
adjustment, such credit is applied in full in determining the amount of 
the underpayment resulting from such adjustment.
    (2) If an unclaimed prepayment credit is not allocable to a 
particular adjustment, such credit is applied in accordance with the 
ordering rules set forth in paragraph (b) of this section.
    (d) Examples. The following examples illustrate the rules of this 
Sec.  1.6664-3. These examples do not take into account the reasonable 
cause exception to the accuracy-related penalty under Sec.  1.6664-4.
    Example 1. A and B, husband and wife, filed a joint federal income 
tax return for calendar year 1989, reporting taxable income of $15,800 
and a tax liability of $2,374. A and B had no amounts previously 
assessed (or collected without assessment) and no rebates had been made. 
Subsequently, the return was examined and the following adjustments and 
penalties were agreed to:

Adjustment 1 (No penalty imposed)......  ..........      $1,000
Adjustment 2 (Substantial                ..........      40,000
 understatement penalty imposed)................
Adjustment 3 (Civil fraud penalty        ..........      45,000
 imposed).......................................
                                                 -------------
Total adjustments...............................  ..........     $86,000
Taxable income shown on return..................  ..........      15,800
                                                 -------------
Taxable income as corrected.....................  ..........    $101,800
Computation of underpayment:
    Tax imposed by subtitle A...................  ..........     $25,828
    Tax shown on return.........................      $2,374  ..........
    Previous assessments........................        None  ..........
    Rebates.....................................        None  ..........
                                                 -------------
    Balance.....................................  ..........      $2,374
                                                 -------------
      Underpayment..............................  ..........     $23,454


    Computation of the portions of the underpayment on which penalties 
under section 6662(b)(2) and section 6663 are imposed:
    Step 1 Determine the portion, if any, of the underpayment on which 
no accuracy-related or fraud penalty is imposed:

Taxable income shown on return..............................     $15,800
Adjustment 1.......................................       1,000
                                                             -----------
      ``Adjusted'' taxable income...........................     $16,800
                                                             ===========
Tax on ``adjusted'' taxable income..........................      $2,524
Tax shown on return.........................................       2,374
                                                             -----------
      Portion of underpayment on which no penalty is imposed        $150


    Step 2 Determine the portion, if any, of the underpayment on which a 
penalty of 20 percent is imposed:

``Adjusted'' taxable income from step 1.....................     $16,800
Adjustment 2.......................................      40,000
                                                             -----------
      ``Adjusted'' taxable income...........................      56,800
                                                             ===========
Tax on ``adjusted'' taxable income..........................     $11,880
Tax on ``adjusted'' taxable income from step 1..............      $2,524
                                                             -----------
      Portion of underpayment on which 20 percent penalty is      $9,356
       imposed..............................................


    Step 3 Determine the portion, if any, of the underpayment on which a 
penalty of 75 percent is imposed:

Total underpayment..............................  ..........     $23,454
Less the sum of the portions of such
 underpayment determined in:
    Step 1......................................        $150
    Step 2......................................       9,356
                                                 -------------
Total...........................................  ..........      $9,506
                                                 -------------
      Portion of underpayment on which 75         ..........     $13,948
       percent penalty is imposed...............


    Example 2. The facts are the same as in Example 1 except that the 
taxpayers failed to claim on their return a credit of $1,500 for income 
tax withheld on unreported additional income that resulted in Adjustment 
2. Because the unclaimed prepayment credit is allocable to 
Adjustment 2, the portion of the underpayment attributable to 
that adjustment is $7,856 ($9,356--$1,500). The portions of the 
underpayment attributable to Adjustments 1 and 3 
remain the same.
    Example 3. The facts are the same as in Example 1 except that the 
taxpayers made a timely estimated tax payment of $1,500 for 1989 which 
they failed to claim (and which the Service had not previously allowed). 
This

[[Page 512]]

unclaimed prepayment credit is not allocable to any particular 
adjustment. Therefore, the credit is allocated first to the portion of 
the underpayment on which no penalty is imposed ($150). The remaining 
amount ($1,350) is allocated next to the 20 percent penalty portion of 
the underpayment ($9,356). Thus, the portion of the underpayment that is 
not penalized is zero ($150--$150), the portion subject to a 20 percent 
penalty is $8,006 ($9,356--$1,350) and the portion subject to a 75 
percent penalty is unchanged at $13,948.

[T.D. 8381, 56 FR 67507, Dec. 31, 1991; T.D. 8381, 57 FR 6165, Feb. 20, 
1992]