IRS Manual Computations

20.2.8.3  (08-01-2006)
Manual Computations

  1. Do not unnecessarily restrict accounts; ensure that TCs 340/341 and TCs 770/772 are used appropriately. Management is required to perform random reviews of cases to verify that they are being restricted/computed correctly.

    1. When manually computing interest, always attach the computation and the reason for the action taken to the adjustment source document.

    2. When abating interest or inputting a TC 340 for zero amount, provide the reason on the adjustment source document.

    3. It is not necessary to input manual debit interest restriction transaction codes (TC 34X) in ADJ54 or ADJ47 with a blocking series that will create a refile DLN if sufficient documentation is attached to the adjustment source document.

    4. All manual debit interest transactions input through ADJ54 or ADJ47 must have an interest-to-date in the DB–INT–TO–DT field (MMDDYYYY format).

    5. Use the non-restricting TC 190 for quick and prompt assessments when Master File can compute the interest.

    Note:

    A reversal of a Gas Tax Credit(s) will require a manual computation and restriction of interest if the taxpayer signed a Form 870, Waiver of Restrictions on Assessment and Collection of Deficiency in Tax and Acceptance of Overassessment.

  2. Transaction code (TC) 342 removes the interest restriction previously set by either a TC 340 or TC 341. TC 342 must be input for zero amount. Master File will consider all posted TCs 19X, 34X, and 33X amounts when assessing or abating additional interest as a result of a recomputation.

    1. TC 342 may NOT be input without first securing the source document for the TC 340/341 that created the interest freeze.

    2. The TC 342 may be input only if the TC 340/341 restriction was unnecessary.

    3. A TC 340 .00 may indicate net rate interest netting.DO NOT INPUT TC 342.

    4. When inputting TC 342, it is not necessary to use a blocking series that will create a refile DLN if sufficient documentation is attached to the adjustment source document

    5. Attach a copy of the source document for the TC 340/341 to the TC 342 adjustment document.

    Caution:

    TC 342 will reverse ALL restricted interest transactions on the module.


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