What is a Special Memorandum Account (SMA)?

A Special Memorandum Account (SMA) is a line of credit that holds excess equity from your margin account, increasing your buying power for stocks on margin.

• Owned by: your broker, functioning much like a credit account.
• Two states: positive SMA (healthy) or negative SMA (a warning sign).
• Negative SMA triggers: a margin call, requiring you to add funds or sell securities.
• Threshold: extra equity occurs when an account holds more than 50% equity above what's prescribed.
• Example: if a stock's margin requirement is Rs. 10,000 and your SMA doesn't hold that amount, you can't enter the trade until you add funds or the account value rises.

A special memorandum account is a line of credit where the additional margin from your individual margin account is deposited. Owned by your broker, an SMA functions much like a credit account, with two possible states — positive or negative.

A negative SMA is always a cause for concern and should be avoided. If you do end up with one, knowing the possible repercussions in advance helps you plan a contingency strategy.

Every deposit into an SMA corresponds to an increase in the value of your stocks or derivatives. Credits also flow into an SMA whenever a portion of your income — such as dividends — is deposited. You can withdraw these credits to buy more shares, but maintaining a positive SMA balance is essential if you plan to keep investing.

Additional read: Trading on equity

When your SMA value turns negative, your broker issues a margin call — a request to add more funds or assets to offset losses and meet margin requirements. Meeting this often means selling some of your securities, which is generally seen as an undesirable outcome. You also need a positive SMA balance to afford any new stock purchases.

Example: Suppose you want to invest in a stock with a margin requirement of Rs. 10,000. You need this amount available in your SMA to execute the trade. If it isn't there, you can't enter the trade until you add funds or the existing account value rises enough to cover it.

The securities and figures referenced above are hypothetical examples only and not a recommendation.

An SMA increases the buying power of your margin or brokerage account. It also secures the gains realised within your margin account, keeping them available for further trading.

Additional read: Debt-to-equity ratio

Keep the following factors in mind:

• An SMA is maintained alongside a margin account, not as a standalone facility.
• Asset values in a margin account fluctuate regularly.
• Extra equity occurs when an account holds equity exceeding the prescribed 50% threshold.
• When this extra equity is detected, the broker can automatically transfer the excess from the margin account to the SMA.
• The broker treats a single entry as a debit transaction in the margin account while computing equity.
• SMA value rises when a security's value increases, but does not fall when the security's value declines.
• Once a transfer happens from a margin account to an SMA, a later drop in the margin account's asset value doesn't affect the amount already transferred.
• The margin account and SMA can both be debited and credited by the same amount, moving together with a single entry's increase or decrease.
• Payments made by the broker to you (or on your behalf), along with transfers from the SMA to other accounts, can reduce a single entry's amount.

The SMA typically records these types of entries:

• Interest and dividend payments only.
• Cash deposited to meet a maintenance margin call or another requirement set by a self-regulatory body.
• Lapsed or liquidated positions eligible for withdrawal under the margin account, where no sale proceeds of securities or cash are required.

A Special Memorandum Account (SMA) is a broker-held line of credit that captures excess equity from your margin account, expanding your capacity to trade on margin. Its value rises with security gains but doesn't fall with losses, and a negative SMA balance triggers a margin call requiring additional funds or asset sales.

Keeping a positive SMA balance matters most if you plan to continue investing, since it directly determines whether you have enough buying power to enter new trades.