Creates tax credit for grocery stores built or renovated in food deserts

Creates a new tax credit (Section 45BB) equal to 30% of the basis of a new qualified grocery store placed in service during the taxable year.

Allows a 30% credit for qualified renovation expenditures for grocery-store areas where groceries are sold (qualified renovation areas).

Caps the credit at $500,000 per taxpayer per taxable year and requires reduction of the property basis by the credit amount.

Defines key terms: "grocery store" (>=35% grocery sales), "groceries" (produce, meat, dairy, deli, baked goods), and a detailed "food desert" test based on distance, population, poverty, and income.

Adds the new credit to the general business credit framework under section 38 and sets the effective date for taxable years beginning after December 31, 2026.