WVC 11 - 13 T- 5
§11-13T-5. Unused credit; carryforward; credit forfeiture.
If any credit remains after application of the credit against
tax for any taxable year under this article, the amount thereof
shall be carried forward to each ensuing tax year until used or
until the first day of July, two thousand ten, whichever occurs
first. If any unused credit remains after the first day of July,
two thousand ten, the amount thereof is forfeited. No carryback to
a prior taxable year is allowed for the amount of any unused
portion of this credit.