House Call

What Is a House Call?

A house call is a brokerage firm's margin call based on the firm's own margin requirements, which may be stricter than regulatory minimums. It tells a margin-account customer to deposit more cash or securities, reduce positions, or otherwise restore the account to the broker's required equity level.

The word house refers to the brokerage firm, not a residence. A firm can set house maintenance requirements above exchange or regulatory minimums, and those internal requirements can trigger a call even when the account still satisfies the minimum rule set.

How a House Call Works

Margin accounts let investors borrow from a broker to buy securities or carry positions. The account must maintain a minimum amount of equity. If market losses, concentration, volatility, or a broker's policy change pushes account equity below the required level, the firm can issue a margin call.

A house call uses the firm's house requirement. For example, regulators may require a certain minimum equity level, but a broker may require more for a volatile stock, concentrated position, leveraged ETF, thinly traded security, or account with unusual risk. The broker's stricter threshold can create a call before the regulatory minimum is breached.

How Investors Can Meet It

A customer may meet a house call by depositing cash, depositing marginable securities, selling securities, or reducing the margin debit. The broker's notice will usually state the amount due and deadline, but the firm may also reserve the right to sell securities sooner if risk changes.

Investors should not assume they control the liquidation sequence. Margin agreements often allow the broker to sell positions without prior notice to protect the firm. That can create tax consequences, lock in losses, or disrupt an investment plan.

Why House Requirements Change

Brokers adjust house requirements to manage risk. Requirements may rise when a security becomes volatile, when a position is concentrated, when liquidity weakens, or when market conditions deteriorate. A broker may also set higher requirements for options, low-priced stocks, leveraged funds, or securities subject to news risk.

This means a margin account can receive a call even if the investor did not make a new trade. A price decline, volatility increase, or policy change can reduce the account's margin capacity.

House Call Versus Regulatory Margin Call

A regulatory margin call is tied to minimum requirements under rules such as Regulation T or maintenance-margin rules. A house call is tied to the broker's own stricter standard. Both can require action, and both can lead to forced liquidation if not resolved.

The difference matters because some investors focus only on regulatory minimums and overlook broker discretion. The firm lending the money can demand more protection than the minimum rules require.

Risk Management

The safest way to avoid house calls is to use less leverage than the account technically allows. Maintaining excess equity, diversifying positions, avoiding concentrated margin exposure, and understanding house requirements can reduce the chance of forced selling.

Investors should also remember that margin losses move faster than cash-account losses because borrowed money magnifies exposure. A house call often arrives when markets are already moving against the account, which can make the required response financially and emotionally difficult.

The Bottom Line

A house call is a broker-level margin demand. It is a reminder that margin borrowing is governed not only by market prices and regulation, but also by the brokerage firm's own risk policies. Those policies can change quickly when volatility rises.