Refundable materials and supplies tax exemption provided for research and development campuses.

HF 2488 creates a refundable tax exemption for construction materials used in qualifying research and development (R&D) campuses in Minnesota. It directly affects developers building campuses with at least 250,000 square feet of lab space and a $200 million construction cost within 32 months. The bill requires the state to collect sales tax on these materials initially but then refund the full amount, mirroring existing refund processes for other projects. This exemption applies to materials for campus construction or improvements and expires on March 1, 2028, with implementation effective after June 30, 2025.