Forex Leverage and Margin: Why the Deposit Is Not the Size of the Risk

Margin is money required to support a leveraged position. It is not the purchase price of a risk-free opportunity and should not be mistaken for the maximum amount that can be lost. Leverage makes a given change in the underlying exposure more significant relative to account equity. For U.S. readers, understanding this distinction is more important than comparing platforms by the largest leverage number advertised. The legal product and provider also determine which rules apply.

Separate notional, margin and equity

Notional exposure describes the amount referenced by the position. Required margin is the amount the provider requires under the relevant rules and agreement. Equity reflects the account's value, including the treatment of open gains and losses. These are different quantities. A small margin requirement can support a much larger notional position. Write all three in a common currency before assessing scale. A platform's available-margin display can change as prices move, requirements change or other positions affect the account.

A simple leverage example

Suppose a hypothetical account with $2,000 of equity carries $20,000 of notional exposure. The ratio is ten to one under this simplified measure. A 1% adverse move on the exposure corresponds to about $200 before costs and conversion effects, or 10% of the starting equity. This illustration is not a recommendation or a statement of permitted leverage for any particular contract. It shows that a small percentage move in the underlying market can translate into a much larger percentage account change.

Required margin is not a loss budget

The provider's minimum is designed within its regulatory and risk framework, not around an individual customer's financial goals. Having enough margin to open a position does not establish that the customer can afford the potential loss. Open losses, spreads and financing can reduce available resources. Other positions can add correlated exposure. A planned maximum loss requires assumptions about execution that may fail during gaps or illiquid conditions. Do not use the amount of initial margin as a substitute for understanding the position's full economic sensitivity.