(a)
General rule
If the individual who is in physical possession of cash in excess of $10,000 does not claim such cash—
(2)
as belonging to another person whose identity the Secretary can readily ascertain and who acknowledges ownership of such cash,
then, for purposes of sections
6851 and
6861, it shall be presumed that such cash represents gross income of a single individual for the taxable year in which the possession occurs, and that the collection of tax will be jeopardized by delay.
(c)
Effect of later substitution of true owner
If, after an assessment resulting from the application of subsection (a), such assessment is abated and replaced by an assessment against the owner of the cash, such later assessment shall be treated for purposes of all laws relating to lien, levy and collection as relating back to the date of the original assessment.
(d)
Definitions
For purposes of this section—
(1)
Cash
The term “cash” includes any cash equivalent.
(2)
Cash equivalent
The term “cash equivalent” means—
(B)
any bearer obligation, and
(C)
any medium of exchange which—
(i)
is of a type which has been frequently used in illegal activities, and
(ii)
is specified as a cash equivalent for purposes of this part in regulations prescribed by the Secretary.
(3)
Value of cash equivalent
Any cash equivalent shall be taken into account—
(A)
in the case of a bearer obligation, at its face amount, and
(B)
in the case of any other cash equivalent, at its fair market value.