Earn $10 when you view your rate on a personal loan *
Bonus deposited into a SoFi Money® account. See terms.

What Is a Margin Call?

By Inyoung Hwang · July 16, 2021 · 4 minute read

We’re here to help! First and foremost, SoFi Learn strives to be a beneficial resource to you as you navigate your financial journey. Read more We develop content that covers a variety of financial topics. Sometimes, that content may include information about products, features, or services that SoFi does not provide. We aim to break down complicated concepts, loop you in on the latest trends, and keep you up-to-date on the stuff you can use to help get your money right. Read less

What Is a Margin Call?

Margin calls are demands for additional money made by the brokerage firm. Margin calls occur when the value of an investor’s trading account dips below a required level.

In a cash account, all transactions are made with the funds investors have available. Meanwhile, in a margin account, investors can make trades with their own money and with money that is borrowed from their broker.

Hence, brokerages often require investors to maintain a fixed level of cash. Margin calls are designed to protect both the brokerage and the client from bigger losses. Here’s a closer look at how margin calls work, as well as how to avoid or cover a margin call.

Rules Around Margin Calls

Under Federal Reserve Board Regulation T, stock brokerage firms can only lend their customers up to 50% of the initial margin, or the total purchase price for a new purchase.

In addition, the Financial Industry Regulatory Authority (FINRA), a self-regulatory organization, requires investors deposit at least $2,000 in a margin account. For day trading, the minimum deposit amount goes up to $25,000.

FINRA also says that the maintenance margin level should be at least 25% of the market value of all securities in the account.

Recommended: How Does a Margin Account Work?

Example of Margin Call

Here is how a margin trade works. Suppose an investor wants to buy 200 shares of a stock at $50 each for an investment that totals $10,000. He or she puts up $5,000 while the brokerage firm lends the remaining $5,000.

FINRA rules and your broker require that the investor hold 25% of the total stock value in his or her account at all times—this is the maintenance requirement. So the investor would need to maintain $2,500 in his or her brokerage account. The investor currently achieves this since there’s $5,000 from the initial investment.

If the stock’s shares fall to $30 each, the value of your investment also drops to $6,000. The broker would then take $4,000 from the investor’s account, leaving just $1,000. That would be below the $1,500 required, or 25% of the total $6,000 value in the account.

That would trigger a margin call of $500, or the difference between the $1,000 left in the account and the $1,500 required to maintain the margin account. Normally, a broker will allow two to five days for the investors to cover the margin call. In addition, the investor would also owe interest on the original loan amount of $5,000.

Margin Call Formula

Here’s how to calculate a margin call:

Margin call amount = (Value of investments multiplied by the percentage margin requirement) minus (Amount of investor equity left in margin account)

Here’s the formula using the hypothetical investor example above:

$500 = ($6000 x 0.25%) – ($1,000)

Investors can also calculate the share price at which he or she would be required to post additional funds.

Margin call price = Initial purchase price times (1-borrowed percentage/1-margin requirement percentage)

Again, here’s the formula using the hypothetical case above:

$33.33 a share = $50 x (1-0.50/1-0.25)

How to Cover a Margin Call

When investors receive a margin call, here are their options to fulfill the demand.

1.   They can deposit cash into the margin account so that the level of funds is back above the maintenance margin requirement.

2.   Investors can deposit securities that aren’t margined.

3.   Investors can also sell the securities that are margined in order to meet requirements.

How Long Do I Have to Cover a Margin Call?

Brokerage firms are not required to give investors a set amount of time. As mentioned in the example above, a brokerage firm normally gives customers two to five days to meet a margin call. However, the time given to provide additional funds can differ from broker to broker.

In addition, during volatile times in the market, which is also when margin calls are more likely to occur, a broker has the right to sell securities in a customer’s trading account shortly after issuing the margin call. Investors won’t have the right to weigh in on the price at which those securities are sold. This means investors may have to settle their accounts by the next trading day.

How to Avoid a Margin Call

Here are some steps investors can take in order to avoid a margin call.

1.   Investors can understand how margin trading and margin calls work and be aware of their broker’s maintenance requirements.

2.   Investors can monitor the volatility of the stock or asset that they are investing in.

3.   Investors can set aside money for a margin call and calculate the stock’s lowest price at which their broker might call them for a margin call.

4.   Investors can use order types that may help protect them, such as limit orders.

Recommended: Tips for Investing Long Term

The Takeaway

As many investors turn to margin trading to boost their investments, rules on initial deposits and maintenance can also help reduce systemic risk in the market. Borrowing by margin traders has steadily climbed higher in 2020 and was at $654.3 billion in September. That’s near the all-time high of $668.9 billion reached in May 2018.

While margin trading allows investors to amplify their purchases in markets, margin calls could result in the investor paying more than he or she initially invested. Margin calls occur when the level of cash in an investor’s trading account falls below a fixed level required by the brokerage firm.

Through SoFI Invest®, investors can pick and choose company stocks, exchange-traded funds (ETFs), and fractional shares through the Active Investing platform. For those who want a more hands-off approach, the Automated Investing service builds and manages portfolios for members.

Check out Active or Automated Investing with SoFi Invest today.


SoFi Invest®
The information provided is not meant to provide investment or financial advice. Investment decisions should be based on an individual’s specific financial needs, goals and risk profile. SoFi can’t guarantee future financial performance. Advisory services offered through SoFi Wealth, LLC. SoFi Securities, LLC, member FINRA / SIPC . SoFi Invest refers to the three investment and trading platforms operated by Social Finance, Inc. and its affiliates (described below). Individual customer accounts may be subject to the terms applicable to one or more of the platforms below.
1) Automated Investing—The Automated Investing platform is owned by SoFi Wealth LLC, an SEC Registered Investment Advisor (“Sofi Wealth“). Brokerage services are provided to SoFi Wealth LLC by SoFi Securities LLC, an affiliated SEC registered broker dealer and member FINRA/SIPC, (“Sofi Securities).
2) Active Investing—The Active Investing platform is owned by SoFi Securities LLC. Clearing and custody of all securities are provided by APEX Clearing Corporation.
3) Cryptocurrency is offered by SoFi Digital Assets, LLC, a FinCEN registered Money Service Business.
For additional disclosures related to the SoFi Invest platforms described above, including state licensure of Sofi Digital Assets, LLC, please visit www.sofi.com/legal. Neither the Investment Advisor Representatives of SoFi Wealth, nor the Registered Representatives of SoFi Securities are compensated for the sale of any product or service sold through any SoFi Invest platform. Information related to lending products contained herein should not be construed as an offer or pre-qualification for any loan product offered by SoFi Lending Corp and/or its affiliates.
SOIN20251

All your finances.
All in one app.

SoFi QR code, Download now, scan this with your phone’s camera

All your finances.
All in one app.

App Store rating

SoFi iOS App, Download on the App Store
SoFi Android App, Get it on Google Play

TLS 1.2 Encrypted
Equal Housing Lender