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Trading Calculators
If you bought on margin, check in advance how far the stock price can fall before you face a collateral shortfall and forced liquidation.
140% at most brokers (varies by stock)
Enter your values and press Calculate
Forced liquidation (collateral shortfall) price
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Current collateral ratio
Cushion from current price
Shares held
Margin trading risk
If your collateral ratio falls below the maintenance ratio, you are asked to post additional collateral, and if you fail to do so by the deadline, the broker forcibly sells at a price close to the market price.
Enter your own money, the margin loan amount, the purchase price and the current price.
It reflects the maintenance margin ratio (usually 140%) of the broker and stock, and the interest.
See how many more percent the price can fall from the current level before a collateral shortfall, and prepare for it.
When a collateral shortfall occurs, you usually must post additional collateral by the next business day, and if you fail to, a forced liquidation order at around the daily lower price limit may go out before the market opens on the following business day. For unsettled-balance trading (misu), if you do not pay by the settlement date (T+2), the position is immediately subject to forced liquidation. Detailed rules differ by broker.
It means the collateral value must stay at 1.4 times the amount borrowed or more. If you borrowed KRW 10 million, a collateral shortfall occurs when the market value of your stocks falls below KRW 14 million.
It differs by broker, but generally, if you do not post additional collateral by the set deadline after a collateral shortfall (usually 1 to 2 business days), forced liquidation is carried out at the market open. The sell orders may even be placed at around the daily lower price limit relative to the previous close.
Your collateral ratio goes up if you add cash or other stocks as extra collateral, or sell part of your holdings yourself to repay the loan. Keeping your margin loan share low in the first place is the surest way.
Results are estimates based on your inputs and simplified assumptions, and are for reference only, not a basis for investment decisions.
Last updated: November 2, 2026
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