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.
While it sounds simple, how it’s calculated depends entirely on what kind of account you’re using. 1. Cash Account Buying Power
AI responses may include mistakes. For financial advice, consult a professional. Learn more stock buying power
In a standard cash account, your buying power is straightforward: it is the you have on hand.
Your buying power isn't a static number. It changes based on: Brokers require you to keep a certain percentage
If you have $5,000 in your account, your buying power is $5,000.
If the stocks you already own drop in value, your equity decreases. Because your borrowing limit is tied to your equity, your buying power drops too. Learn more In a standard cash account, your
If you put all your money into one "risky" or volatile stock, a broker might reduce your leverage, effectively lowering your buying power to protect themselves from a total wipeout. The Bottom Line