(a) If it appears upon audit or otherwise that any person has improperly claimed the credit allowed by this article, the amount improperly claimed and which the person was not entitled to take shall be recaptured. Amended returns shall be filed for any taxable year for which the credit was improperly taken. Any additional taxes due under this chapter shall be remitted with the amended return or returns filed with the Tax Commissioner, along with interest, as provided in section seventeen, article ten of this chapter, and a ten percent penalty plus such other penalties and additions to tax as may be applicable under the provisions of article ten of this chapter.

(b) Recapture for jobs lost. --

(1) In any tax year the number of individuals employed in full-time positions by the eligible taxpayer decreases by more than ten percent, credit recapture shall apply, and the taxpayer shall return to the state an amount of tax determined by multiplying $500 by the number of full-time jobs lost which exceed ten percent. An amended return shall be filed for the tax year for which credit recapture is required. Any additional taxes due under this chapter shall be remitted with the amended return filed with the Tax Commissioner, along with interest, as provided in section seventeen, article ten of this chapter, and a ten percent penalty plus such other penalties and additions to tax as may be applicable under the provisions of article ten of this chapter.

(2) Notwithstanding the provisions of article ten of this chapter, penalties and additions to tax imposed under article ten of this chapter and the ten percent penalty imposed under this section may be waived, in whole or in part, at the discretion of the Tax Commissioner. However, interest may not be waived.

(c) Notwithstanding the provisions of article ten of this chapter, the time within which a notice of assessment may be issued by the Tax Commissioner to recover recapture tax shall be five years from the date of filing of any tax return on which this credit was taken or five years from the date of payment of any tax liability calculated pursuant to the assertion of the credit allowed under this article, whichever is later.