Sizing a leveraged position from your loss limit rather than your hopes in Australia

When people open a leveraged futures position, the usual order of thinking is size first, leverage second and risk last, if at all. That order is backwards. Leverage magnifies losses as well as gains, and a position can be liquidated quickly when the market moves sharply. A safer habit is to start from the most you are willing to lose on the trade and work back to a size and leverage that fit inside it. This guide explains the idea for readers in Australia using Binance, OKX, Bybit or Bitget. It is not financial advice and makes no forecasts.

Start with a loss you can accept

Before looking at the order form, decide the maximum amount you are prepared to lose on this single trade. It should be money whose loss would not affect bills, savings or plans. Write the figure down. Also decide the price at which your idea is clearly wrong and you will exit. Those two numbers, the loss amount and the exit price, are the foundation for everything else.

Work back to a position size

The distance between your entry and your exit price tells you how much you lose per unit if you are wrong. Divide your acceptable loss by that distance to get a position size. If the result is smaller than you hoped, that is the plan working: it is telling you the trade does not fit your limit at that size. Resist the temptation to move the exit price further away just to allow a bigger position.

Check leverage and liquidation

Leverage determines how much margin the position needs, not how much you should risk. Read how margin modes and liquidation work in the help centre of the platform you use. Check the estimated liquidation price shown before you confirm and make sure it sits well beyond your planned exit, so that your exit order acts first. Test stop orders with a tiny size to see how they behave.

Record and review

After each trade, note the planned loss, the actual result and whether you followed the plan. At the end of the month, look for trades where the size did not match the limit and ask why. Set a monthly loss limit too, and stop trading futures for the month if it is reached. Choosing not to use leverage at all is a perfectly reasonable outcome of this review.

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Scenario checkpoint

• Write down the maximum loss you accept before opening any leveraged trade
• Decide the exit price at which your trade idea is clearly wrong
• Calculate position size from the accepted loss and the distance to your exit
• Confirm the estimated liquidation price sits well beyond your planned exit
• Stop trading futures for the month when your monthly loss limit is reached