California treats post-sale restraints differently from most states. Business and Professions Code §16600 voids most non-competes, but §16601 carves out a clean exception for an owner who sells the goodwill of a business, which is exactly the situation a BPA covers. The covenant has to be tied to the goodwill sale and drafted within the statutory carve-out, or a California court will strike it. Buyers paying for customer relationships should treat this clause as load-bearing, not boilerplate, and confirm the selling owner holds enough equity to fall inside §16601.
New York enforces seller non-competes more readily than employee non-competes, applying a reasonableness test on duration, geography, and scope. New York also scrutinizes the bulk sales angle in asset deals involving inventory, and its tax authority can pursue a buyer for the seller's unpaid sales tax unless a bulk-sale notification is filed and a clearance received. Skipping that notice in New York can make the buyer personally liable for the seller's back taxes, a risk that has no equivalent in a stock deal.
Texas governs non-competes through Business and Commerce Code §15.50, which requires the covenant to be ancillary to an otherwise enforceable agreement, a standard a business sale satisfies cleanly. Texas courts will reform an overbroad covenant rather than void it, which gives sellers less leverage to escape a reasonable restriction. For entity-level deals, the partnership and entity buyout mechanics under the Texas Business Organizations Code should be checked against the company's own governing documents before transfer.
Delaware is the default choice for governing law even when neither party operates there, because its courts have the deepest body of M&A case law and predictable rules on sandbagging and indemnification. A Delaware-incorporated target sold by stock keeps its franchise tax and annual report obligations running through closing, and the buyer inherits them, so confirming the entity's good standing is a standard closing condition.