(a) Repealed by Acts 1983, 68th Leg., p. 982, ch. 234, Sec. 1, eff. May 25, 1983.
(b) Sampling auditing methods are appropriate if:
(1) the taxpayer’s records are so detailed, complex, or voluminous that an audit of all detailed records would be unreasonable or impractical;
(2) the taxpayer’s records are inadequate or insufficient, so that a competent audit for the period in question is not otherwise possible; or
(3) the cost of an audit of all detailed records to the taxpayer or to the state will be unreasonable in relation to the benefits derived, and sampling procedures will produce a reasonable result.

(c) Before using a sample technique to establish a tax liability, the comptroller or his designee must notify the taxpayer in writing of the sampling procedure to be used.
(d) The sample must reflect as nearly as possible the normal conditions under which the business was operated during the period to which the audit applies. If a taxpayer can demonstrate that a transaction in a sample period is not representative of the taxpayer’s business operations, the transaction shall be eliminated from the sample and be separately assessed in the audit. If records are inadequate to reflect accurately the business operations of the taxpayer, the comptroller or his designee shall determine the best information available and base his audit report on that information.
(e) If the taxpayer demonstrates that any sampling method used by the comptroller was not in accordance with generally recognized sampling techniques, the audit will be dismissed as to that portion of the audit established by projection based upon the sampling method, and a new audit may be performed.