A managed fee-based account is normally structured so that a licensed portfolio manager has discretionary trading authority over the client’s account. This means the manager can make investment decisions according to the client’s investment policy statement, mandate, objectives, and risk profile without asking for approval before every transaction. Option A is too narrow because fee-based accounts may include portfolio construction, monitoring, reporting, rebalancing, and advisory services, not only investment management. Option B is incorrect because fee schedules can vary and may be negotiable depending on account size and services provided. Option D is incorrect because fees charged inside registered accounts are generally not tax-deductible. The defining feature is discretionary management by a qualified portfolio manager.