Income tax; extend repealer on credit for certain railroad expenditures.

HB 717 extends the expiration date of Mississippi's income tax credit program for railroad infrastructure investments, which currently ends January 1, 2030. The bill directly affects Class II and Class III railroads operating in Mississippi by allowing them to continue claiming tax credits for eligible reconstruction/replacement (up to 50% of costs or $5,000 per mile) and new infrastructure projects (capped at $1 million per project). Key provisions maintain the existing credit structure, including annual spending limits ($8 million total), credit transfers to other taxpayers, and carry-forward rules for unused credits. This extension preserves the program's current rules without altering the credit amounts or eligibility criteria.