Page 1321

given year. If a tax liability for the given year still remains, the credit from the next earliest year will then be applied, and so on, until all credits have been used or no tax liability for the given year remains. Any remaining unused credit or credits then will be carried forward to the next following year in which a tax liability is incurred, except that no credit can be carried forward to a year which is more than 5 years after the year in which the expense for which the credit is given was incurred. No inference shall be drawn from Public Act 91-644 in construing this Section for taxable years beginning before January 1, 1999. It is the intent of the General Assembly that the research and development credit under this subsection (k) shall apply continuously for all tax years ending on or after December 31, 2004 and ending prior to January 1, 2032, including, but not limited to, the period beginning on January 1, 2016 and ending on July 6, 2017 (the effective date of Public Act 100-22). All actions taken in reliance on the continuation of the credit under this subsection (k) by any taxpayer are hereby validated. (l) Environmental Remediation Tax Credit. (i) For tax years ending after December 31, 1997 and on or before December 31, 2001, a taxpayer shall be allowed a credit against the tax imposed by subsections (a) and (b) of this Section for certain amounts paid for SB3019 Enrolled LRB104 20255 HLH 33706 b Public Act 104-0468