is essentially the total amount of money you have available to purchase securities. Think of it as your "spending limit" at the brokerage mall.
Brokers require you to keep a certain percentage of equity in your account (usually 25% or higher). If you dip below this, you’ll face a margin call , where your buying power hits zero (or goes negative), and you're forced to deposit cash or sell assets.
In a standard cash account, your buying power is straightforward: it is the you have on hand.
When you sell a stock, the money doesn’t always become "buying power" instantly. Most trades take one business day to "settle" (T+1). If you buy more stock using "unsettled" funds and sell it too quickly, you could trigger a Good Faith Violation . 2. Margin Account Buying Power
