Why does my calculated drawdown headroom differ from the firm's?

The usual causes are the day boundary and the peak definition. If the firm trails the intraday unrealised high and your figure follows closed balances, the firm's floor is higher than yours; if your day rolls at midnight local and theirs at 5pm Chicago, some trades are in the wrong bucket entirely.

Does the floor ever come back down?

On most trailing programmes it does not — once raised it stays, and on some it stops trailing entirely once it reaches the starting balance. That detail is part of the rule set and varies by firm, which is why it is worth reading rather than inferring.

Is a funded prop account's profit the same as cash?

No, and this is worth stating plainly: at most firms the funded account is simulated and the only money that exists is a payout the firm actually wires. A balance and a payout are different quantities, and adding them together describes an amount nobody has.

Prop Firm Drawdown Rules Explained

Static drawdown

The floor is set once, from the starting balance, and never moves. A $50,000 account with a $2,000 static limit fails at $48,000 regardless of what the balance reached in between.

It is the simplest to reason about and the easiest to reproduce from a trade record, because it depends on nothing except the current balance.

End-of-day trailing drawdown

The floor trails the highest CLOSING balance. Profit made and held through the session close raises it; profit made and given back within the same day does not.

This version is reproducible from trade rows, because the quantity it follows — the balance at each day's close — is something a journal computes exactly. It does depend on knowing when the firm's day closes, which is a wall clock in the firm's own timezone rather than the trader's.

Intraday trailing drawdown

The floor trails the highest balance the account ever reached, including unrealised profit on open positions. An account that was $1,200 up at one moment and closed the day flat has still had its floor raised by $1,200.

This is the one a journal cannot reproduce. The peak happened between the fills, and trade rows record the fills. A figure derived from stored excursions is an estimate that can move the floor in either direction — it can miss a peak, and it can invent one — so it should be labelled as an estimate everywhere it is shown, and never used to declare a breach.

One balance path under three rules

The same four days on a $50,000 account with a $2,000 drawdown. Only the floor's rule changes.Illustration built from the example in the text — not real trades.

The firm's day is not your day

Daily limits and end-of-day floors both hinge on when the day rolls over, and that boundary is set by the firm — commonly 5pm in Chicago for US futures programmes, or midnight in a European zone. A trade taken at 6pm on a Wednesday belongs to Thursday under such a rule.

Bucketing those trades by calendar date instead reports a limit break on a day that never had one, and misses the day that did. It is arithmetic on the firm's declared clock, and it is the single most common source of a figure that disagrees with the firm's dashboard.

Rules that sit alongside the floor

Most programmes combine the drawdown floor with other conditions, and a rule the firm did not set should not be assumed:

A daily loss limit, measured against the day's own starting balance and reset each day. Not every programme has one — several evaluations do not.
A profit target, for evaluation phases.
A minimum number of trading days.
Consistency rules, capping how much of the total profit any single day may represent.

Questions

Why does my calculated drawdown headroom differ from the firm's?: The usual causes are the day boundary and the peak definition. If the firm trails the intraday unrealised high and your figure follows closed balances, the firm's floor is higher than yours; if your day rolls at midnight local and theirs at 5pm Chicago, some trades are in the wrong bucket entirely.
Does the floor ever come back down?: On most trailing programmes it does not — once raised it stays, and on some it stops trailing entirely once it reaches the starting balance. That detail is part of the rule set and varies by firm, which is why it is worth reading rather than inferring.
Is a funded prop account's profit the same as cash?: No, and this is worth stating plainly: at most firms the funded account is simulated and the only money that exists is a payout the firm actually wires. A balance and a payout are different quantities, and adding them together describes an amount nobody has.