@jakeclaverqfop: Adding a spouse as a manager of a single-member LLC is often straightforward and typically does not change the entity's tax treatment. In some states, a qualified joint venture structure may allow spouses to share ownership without triggering asset contribution issues. Multiple LLCs can serve different purposes, such as active holdings versus long-term legacy planning. The right structure depends on your goals, assets, and state rules, so consult an estate planner before making changes.