The right structure depends on the number of owners, personal-liability exposure, continuity, compliance cost, tax treatment, funding plans and exit strategy. A proprietorship is simple but not legally separate from its owner. A partnership is governed by its deed and partners generally carry broader liability. An LLP is a separate legal entity with limited liability and an LLP agreement. OPC and private limited companies are incorporated entities with company-law governance and annual compliance. Obtain professional legal and tax advice for the specific activity and state.