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Underreported income.

When the IRS suspects a taxpayer is underreporting income, various IRC sections come into play. Section 6001 requires a taxpayer to keep adequate records to compute taxable income. When a taxpayer's accounting method does not clearly reflect income, section 446(b) gives the IRS authority to compute taxable income using an alternate method. This section allows the service to use reasonable means to determine income when accounting records do not support the income and deductions a taxpayer reports. If there is a reasonable indication of unreported income, the IRS can use an indirect method to reconstruct it. The available methods, which are listed in the Internal Revenue Manual, have been validated in various court cases. The Third Circuit Court of Appeals recently heard a case relating to income determination and the burden of proof.

Barbara Bacon and her spouse, Robert, filed joint returns for tax years 1988 through 1991. Robert Bacon was the sole shareholder of an S corporation. Its only activity was a restaurant and bar business. The couple made deposits to their joint bank account that exceeded their reported taxable income by several million dollars.

As the Bacons' accounting records did not show the source of the additional deposits, the IRS used the bank deposit method to reconstruct income. Under this method, the IRS determines income through analysis of bank deposits, canceled checks, currency transactions, electronic debits, electronic transfers and account credits. Cash expenditures not from deposited funds or nontaxable sources are added to the underreported income. Deductible expenses not accounted for in the taxpayers' return are allowed. (See Calhoun v. United States, 591 F2d 1243, 1245 (9th Cir. 1978)). Based on this reconstructed income, the IRS assessed the Bacons an additional tax for deficiencies and penalties for fraud. The Tax Court agreed with the IRS. In filing an appeal, Barbara Bacon (Robert Bacon withdrew from the appeal without explanation) contended the court had failed to properly prove unreported income and that it impermissibly shifted the burden of proof to her.

Result. For the IRS. Taxpayers must maintain adequate records to permit the IRS to determine their tax liability. When a taxpayer fails to do so, the IRS may use reasonable methods to reconstruct income. (See Agnellino v. Commissioner, 302 F2d 797, 798-99 (3d Cir. 1962)). The Third Circuit held that the Bacons failed to maintain such records and had substantially underreported income.

It is well established that IRS deficiency determinations of income are presumed correct and taxpayers have the burden of proof when contesting them in tax court. (See Helvering v. Taylor, 293 US 507, 513 (1935); Anastasato v. Commissioner, 794 F2d 884, 887 (3d Cir. 1986)). In unreported income cases, the normal presumption of correctness attaches to the IRS deficiency determination so long as it is not "without rational foundation." (United States v. Janis, 428 US 433, 441 (1976); see also Anastasato). In this case the Third Circuit held that the IRS income computation was reasonable and the Bacons failed to prove the determination was incorrect.

Taxpayers should maintain adequate accounting records to determine their tax liability. Failing this, the IRS may use reasonable methods to reconstruct income. Unless this determination is found to be arbitrary, the burden of proof falls on the taxpayer rather than the IRS. CPAs and taxpayers may see detailed illustrations of the IRS's income determination methods (the bank deposit, cash transaction, net worth, percentage-of-markup and unit-and-volume methods) by reviewing part 4, "Examining Process" in the Internal Revenue Manual, at info/tax_pro/irm-part/part04/27637a. html. The taxpayer or CPA also may use these methods to reconstruct income when the taxpayer's accounting records are not sufficient.

* Barbara Bacon v. Commissioner, 88 AFTR2d 2001-6396.
Tax: Collections Go Up

According to estimates based
on the presidential budget
released in April 2001, the
federal government will have
collected $7,597 in tax revenue
for every man, woman and child
in the nation during fiscal 2001,
a 5.1% increase over 2000. This
per capita federal tax burden is
expected to rise another 1.5%
to $7,711 in fiscal 2002.

 2001 2002

$7,597/person $7,711/person

+5.1% +1.5%
from 2000 from 2001

Source: Tax Foundation,

Prepared by Ronald R. Hiner, CPA, EdD, professor of accounting and Darlene Pulliam Smith, CPA, PhD, professor of accounting, both of the T. Boone Pickens College of Business, West Texas A&M University, Canyon.
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Article Details
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Title Annotation:IRS authority to compute taxable income using an alternate method
Author:Smith, Darlene Pulliam
Publication:Journal of Accountancy
Geographic Code:1USA
Date:Mar 1, 2002
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