Leverage amplifies an outcome relative to equity, collateral deposited or operating profit. First establish what the stated multiple compares. A company's assets relative to equity are not the same ratio as its debt relative to equity; a contract linked to an asset price may instead compare position size with a deposit. A 5× label alone tells you neither how much you can lose nor when more money will be required.
Start with our own simple company: assets of 100 USD, or US dollars, debt of 80 and equity of 20. Here equity is the difference between assets and debt. Assets relative to equity give 100/20 = 5, while debt relative to equity gives 80/20 = 4. Both describe the same company but answer different questions. A multiple therefore needs its exact calculation and date; reported book values may also differ from what the assets could currently sell for. This is a model company balance sheet, not an allowed U.S. retail margin-account limit. [1]
Keep debt at 80 in the same company. If assets rise to 110, equity after subtracting debt is 30. Relative to original equity, the change is (30−20)/20 = 50%. If assets instead fall to 90, only 10 remains: a return of −50%. At asset value 80, equity is exhausted. This simplified model excludes costs and interim settlement. Some contracts can leave you with losses beyond the amount deposited. Zero equity is not a universal liquidation price either: liquidation means a forced closeout, and the provider may act earlier under its collateral rules. [6]
Margin is the required equity or collateral backing a position; after opening it, the initial deposit may no longer be sufficient. For eligible ordinary US stocks, FINRA describes general initial borrowing of up to 50% of the purchase price and minimum maintenance equity of 25% of current value. A broker can require more. Our position worth 100 USD with debt of 50 reaches the 25% boundary at 50/(1−0.25), about 66.67. A 40% requirement gives a boundary of about 83.33. These are scaled illustrative amounts, not a real account’s minimum deposit. A demand for more backing is called a margin call, but a broker can sell without prior contact. The calculated threshold is not a guaranteed sale price, and other products have different rules. [2]
A futures contract provides for future settlement and derives its value from an underlying asset, such as BTC. CME distinguishes collateral for that contract from a loan to buy shares: posting margin does not itself give ownership of the underlying. In our model, a linear contract tracks the price movement of a position worth 1000 USD against collateral of 100. Nominal leverage is 10×. A 2% contract move means 20, or 20% of original collateral before costs. The same move against you produces a loss. We assume fixed linear exposure: an unchanged position size with a directly proportional price effect. Options, inverse contracts and changing collateral need different calculations. [3]
Another form is operating leverage, which CFA distinguishes from financial borrowing. It arises because some costs, such as rent, do not immediately fall with sales. Our company has revenue of 100 USD, variable costs of 60, fixed costs of 30 and operating profit of 10. If the variable-cost proportion stays unchanged and revenue falls to 90, profit becomes 90−54−30 = 6. Revenue fell by 10%, but operating profit fell by 40%, without the company taking a loan. Fixed costs amplified the effect of weaker sales. Even fixed costs, however, do not remain unchanged at every possible production scale. [4]
Return to the company with assets of 100 USD and debt of 80. If available cash is only 2 and principal of 10 is due soon, it lacks 8 without other funding. Principal means the borrowed amount, excluding interest. Assets exceeding debt are not the same as liquidity, the ability to pay on time; some assets cannot be sold quickly without a loss. Financing itself also has a cost: an amount of 2 over the period equals 2/20 = 10% of original equity. A later maturity, a cheap loan and an easy asset sale are different things. A good debt ratio does not guarantee them. [1]
An ETF is a fund traded on an exchange. Some leveraged ETFs target a multiple of daily returns and reset their positions each day. A longer holding period therefore combines the daily changes. Our index goes from 100 to 110 and back to 100. An ideal daily 2× fund without costs goes from 100 to 120 and then to 120×(1−2/11), about 98.18. The index is back at its starting point, while the fund loses about 1.82%. With two index gains of 10%, however, the fund would reach 144 against an index value of 121. The outcome depends on the price path: not always a loss. Check the actual reset interval and the fund's objectives in its prospectus. [5]
Imagine debt of 50000 USD secured by 1 BTC worth 100000. Debt represents 50% of the collateral's value. If BTC falls to 60000, the ratio 50000/60000 rises to about 83.33%, although you have neither borrowed more nor reduced your BTC. If you hold another BTC position, collateral can weaken at the same time as that position loses value. To assess the risk, check how much collateral value the lender recognizes, its reference price, the debt currency, interest charges and when the lender may sell the collateral. Adding leverage alone creates neither a trading advantage nor yield supplied by the Bitcoin protocol. [6]
For the clearest picture, read this entry together with Margin, Forced liquidation, Cash flow, Risk Management. The reverse links also lead from Reflexivity, Debt maturity, Refinancing risk, Credit risk.