Proof that you are a legitimate operating business.
This allows you to purchase materials tax-free if they are intended for resale (e.g., as part of a finished furniture piece).
Move away from "big box" stores and target these specialized sources: Need some advice on wholesale lumber. : r/woodworking
Wholesale pricing is tied to volume. Minimums can range from 100 to 1,000+ board feet. Some specialty suppliers, like Estate Millwork , require a 500 BF minimum. 2. Identifying Suppliers