Drawdown buffer — The cushion between your balance and the level that would breach the account — or the profit a firm requires above the starting balance before a payout.
How drawdown buffer works in prop trading
Buffer is used two ways in prop trading and it is worth keeping them apart. Operationally, your buffer is simply the distance between your balance and the drawdown floor — the money you can still lose today. It is the number to size trades against, not the account balance.
Contractually, a buffer rule is a firm requirement that your balance sit a set amount above the starting balance before a withdrawal is allowed. A $50,000 account with a $2,600 buffer requirement cannot pay out until the balance reaches $52,600, and a withdrawal usually cannot take it back below that line. The effect is that the first payout is smaller and later than a naive reading of the profit split suggests.
Key points
- Your working buffer is balance minus drawdown floor — always size from this, never from account size.
- A payout buffer is a separate contractual minimum balance that must remain after any withdrawal.
- Buffer requirements are commonly set just above the point where the trailing drawdown locks.
- Withdrawing down to the buffer line leaves the account with minimum room and is a common route to a later breach.
Example
$50,000 account with a $2,600 buffer requirement: at a $53,500 balance you may withdraw $900, because the balance must remain at or above $52,600.
Also known as
- buffer rule
- profit buffer
- safety buffer
- payout buffer
Frequently asked questions
What is the buffer rule in futures prop trading?
It is a minimum balance a funded account must hold before and after a withdrawal, set above the starting balance. It exists to stop traders stripping an account back to its breach level immediately after a good day. The required amount is usually stated as a dollar figure per account size in the payout terms.
How much buffer should I keep above the drawdown?
That is a risk decision rather than a rule, but a common approach is to keep at least five to eight times your average per-trade risk between your balance and the floor, so a normal losing streak does not end the account.
Put this into practice
Drawdown buffer is described here as a plain-language educational definition. Firms, platforms, and account programs may apply different conditions or calculations. Verify the current official terms before using this definition to make an account decision.