(a) Amnesty shall be granted for any taxpayer who meets the requirements of Code Section 48-16-5 in accordance with the following:

(1) For taxes which are owed as a result of the nonreporting or underreporting of tax liabilities or the nonpayment of any accounts receivable owed by an eligible taxpayer, the state shall waive criminal prosecution and all civil penalties which may be assessed under any provision of this title for the taxable years or periods for which tax amnesty is requested; and

(2) With the exception of instances in which the taxpayer and commissioner enter into an installment payment agreement authorized under subsection (c) of Code Section 48-16-5, the failure to pay all taxes and interest as shown on the taxpayer's amnesty tax return shall invalidate any amnesty granted pursuant to this chapter.

(b) This chapter shall not apply to any taxpayer who is on notice, written or otherwise, of a criminal investigation being conducted by an agency of the state or any political subdivision thereof or the United States, nor shall this chapter apply to any taxpayer who is the subject of any criminal litigation which is pending on the date of the taxpayer's application in any court of this state or the United States for nonpayment, delinquency, evasion, or fraud in relation to any federal taxes or to any of the taxes to which this amnesty program is applicable.

(c) No refund or credit shall be granted for any interest or penalty paid prior to the time the taxpayer requests amnesty pursuant to Code Section 48-16-5.

(d) Unless the commissioner in his own discretion redetermines the amount of taxes and interest due, no refund or credit shall be granted for any taxes or interest paid under the amnesty program.