Prop-firm drawdown and consistency rules: calculate the real loss floor

Before paying for any evaluation, translate the rulebook into two numbers you can act on: the exact level at which the account stops being tradable, and the largest position that fits inside your remaining room after costs. The marketed account size does neither of those jobs on its own.

The marketed size is not your loss allowance

Evaluation providers describe accounts in terms of simulated capital. FTMO states that its account sizes are simulated capital, and Topstep describes its Trading Combine as a simulated account. That means the headline figure labels the exercise, not money under your control in live markets. [1] [2]

What matters instead is the distance between your current equity and the active loss floor. If a hypothetical 100,000-unit account carries a 10,000-unit allowance and later reaches 104,000, a trailing floor may move from 90,000 to 94,000. The account still has 10,000 units of room at that moment, but 4,000 less room than it would have under a static 90,000 floor. The allowance number alone tells you nothing without the formula that moves it.

Definitions needed before reading any rulebook [1] [3]

• Balance: the account value based on closed trades only. [3]
• Equity: balance plus unrealised profit or loss on open positions, and often fees already applied. FTMO's loss calculations use equity, including open profit or loss, swaps and commissions, not closed balance alone. [1]
• Realised P/L: profit or loss locked in when positions close. [1] [3]
• Unrealised P/L: floating profit or loss on positions still open. Topstep states that both realised and unrealised P/L count towards its Maximum Loss Limit. [3]
• High-water mark: the highest qualifying balance or equity reached, used as the reference point for some trailing floors. [1]
• Static drawdown: a loss floor fixed at one level for the life of the phase. [1]
• Trailing drawdown: a floor that rises as the account grows. Topstep's Maximum Loss Limit is described as trailing with end-of-day balance, never moving down, and locking once it reaches the starting balance. [3]
• End-of-day trailing drawdown: a trailing floor recalculated once per day from a qualifying reference, such as the midnight balance. FTMO's 1-Step maximum-loss limit uses the highest qualifying midnight balance and never moves down; FTMO says it resets when a reward is withdrawn and a new FTMO Account is provided. [1]
• Intraday monitoring: checking the rule against live values during the session rather than only at day end. Topstep monitors its Maximum Loss Limit in real time even though the limit itself rises at end of day. [3]
• Daily loss: the maximum loss permitted within one trading day, measured against a defined reference point. [1] [2]
• Reset time: the clock moment when a new trading day begins for rule purposes. FTMO recalculates its daily loss from the balance at 00:00 CE(S)T, and Topstep defines its trading day as running from 5:00 PM CT to 3:10 PM CT the next calendar day. [1] [2]
• Consistency target: a cap on how large a single day's profit may be relative to total profit or a target, designed to discourage one outsized day. [4]
• Profit target: the gain required before an evaluation phase can be passed.
• Payout eligibility: the conditions, including any separate consistency thresholds, that must be met before rewards or withdrawals become available. Topstep describes a different 40% threshold using largest single-day net profit divided by total net profit for an optional payout path on its Express Funded Account. [4]

Why the exact wording of a trigger clause matters

Small differences in wording change outcomes. A rule that triggers when equity hits a level differs from one that requires equity to fall below it, because equality itself can be the trigger. An end-of-day update clause states when the floor changes; it does not by itself state when compliance is monitored. That must be read separately. Topstep notes that hitting its Maximum Loss Limit can trigger liquidation even if later price movement would have left the final realised balance above it, which shows why timing of measurement matters. [3]

You also need to know what value is measured. A clause written against balance ignores open losses; one written against equity includes them. Because FTMO calculates losses on equity including open P/L, swaps and commissions, a floating loss can consume room before anything closes. [1]

Model contact, detection and exit as separate events

A rule-engine event has at least three timestamps: the moment the monitored value touches the threshold, the moment the system detects the condition, and the moment liquidation orders finish. Those values need not be identical. As a hypothetical illustration, live equity touches a 94,000 floor, the system submits market exits, and the final closed balance settles at 94,080 after prices move during execution. The account can still have triggered at the earlier touch. The reverse is also possible: exit slippage can leave the closed value below the level even though the trigger was detected at it. Topstep's current explanation expressly separates the real-time threshold event from the final realised balance after liquidation. [3]

For your rule sheet, create separate fields for update time, monitoring frequency, equality wording and liquidation method. Do not collapse them into a single row called drawdown. If the terms are silent on one field, mark it unknown and ask for clarification in writing before paying. A dashboard that shows the remaining distance may help with monitoring, but it cannot resolve an ambiguous trigger clause or document which rule version applied.

Static versus trailing loss floors: a worked illustration

All numbers in this section are illustrations of mechanics, not a current offer from any provider.

1. Start with a hypothetical 100,000-unit account and a 10,000-unit allowance. Under a static floor, the level is 90,000 and stays there regardless of performance.
2. Suppose the trader's end-of-day balance reaches 104,000. Under an end-of-day trailing rule keyed to the highest qualifying balance, the floor rises by the same 10,000-unit allowance to 94,000.
3. If the rule locks at the starting balance once reached, as Topstep describes for its Maximum Loss Limit, continued growth eventually stops moving the floor and it becomes effectively static again. [3]
4. Under the trailing example, the account at 104,000 has 10,000 units of room below current equity, exactly as at the start. Under the static example, the same account would have 14,000 units of room. The trailing floor therefore leaves 4,000 less spare loss room at that point than the static floor. If a programme later locks its trailing floor, subsequent gains may increase the distance again.

How a daily-loss reset actually works

Use a second hypothetical, unrelated to any provider's current figures. Imagine a rule allowing a 2,500-unit daily loss, reset at midnight in the provider's timezone, measured on equity.

1. At reset, the reference balance is recorded. Say it is 101,000.
2. During the day the trader closes a trade for minus 900 (realised P/L), then opens a position currently showing minus 700 (unrealised P/L), with 120 of commissions and 30 of swap charges applied. Equity-based measurement counts all of it: roughly 1,750 consumed against the 2,500 daily allowance.
3. At the next reset in the provider's timezone, the reference rebases to the new balance. A profitable morning in your home timezone may sit inside the previous trading day under the provider's clock, so sessions straddle resets differently than you expect.

For dated examples of real reset conventions, FTMO recalculates its 1-Step daily loss from the balance at 00:00 CE(S)T, while Topstep defines its trading day from 5:00 PM CT through 3:10 PM CT the next calendar day. These are provider-specific and phase-specific examples, not standards. [1] [2]

End-of-day updates can still mean real-time enforcement

Two properties combine in many rulebooks. The floor's level may update only once per day from a qualifying balance, yet enforcement during the session may compare live equity against that floor continuously. Topstep's documentation pairs an end-of-day rising limit with real-time monitoring, counting unrealised P/L. The practical consequence: yesterday's balance sets today's floor, but today's floating losses are measured against it minute by minute. [3]

Consistency rules: turning a best day into a minimum total

Most consistency clauses follow one general structure: best day divided by the allowed share equals the minimum total profit required. All arithmetic here is illustrative.

1. Take a hypothetical best day of 1,800 under a 50% cap. Minimum total profit equals 1,800 divided by 0.50, which is 3,600.
2. Topstep documents this form for its Trading Combine: a 50% Consistency Target where the required total is calculated as best day divided by 0.50. [4]
3. Losses do not repair the ratio, because they do not reduce the best-day numerator. Topstep states that losses do not reset the best day. [4]
4. Earning more within the same session can raise the best day along with the total, leaving the ratio unchanged or worse. Topstep notes that earning more during the same session can raise the best day rather than fix the target. [4]

Note also that exceeding a consistency share is not always a breach. FTMO's 1-Step Best Day Rule says the best day must not exceed 50% of Positive Days' Profit; exceeding it is not itself a breach but requires more profitable days before passing or reward eligibility. Distinguish hard stops from delayed eligibility when reading any rulebook. [1]

Keep pass rules, account stops and payout rules separate

Four categories often sit side by side in one document and must not be merged. First, pass conditions: profit targets and minimum trading days for the evaluation phase, such as the four minimum trading days shown in FTMO's current 2-Step rules. Second, breach conditions: loss limits that can stop an account, monitored in real time or otherwise. Third, eligibility modifiers: rules like consistency shares that delay passing or payouts rather than ending the account. Fourth, payout-path rules that apply after funding, which can use different formulas entirely, as Topstep's 40% payout-path threshold differs from its 50% Combine target. [1] [4]

Phases matter too. FTMO's current 1-Step rules show a 3% maximum daily loss and a 10% end-of-day trailing maximum loss, while its current 2-Step rules show a 5% maximum daily loss and a static 10% maximum loss. Same firm, different phases, different mechanics. [1]

Comparing three dated rule sets

The following comparison exists only to show variation between programmes and phases. All details were accessed on 2026-08-24 and can change; always check the live rulebook before relying on anything here.

• FTMO 1-Step (accessed 2026-08-24): 3% maximum daily loss recalculated from the 00:00 CE(S)T balance; 10% end-of-day trailing maximum loss using the highest qualifying midnight balance and never moving down, with FTMO describing a full reset after reward withdrawal when a new FTMO Account is provided; Best Day Rule capping the best day at 50% of Positive Days' Profit, with excess requiring more profitable days rather than ending the account; losses measured on equity including open P/L, swaps and commissions. [1]
• FTMO 2-Step (accessed 2026-08-24): 5% maximum daily loss; static 10% maximum loss; four minimum trading days. [1]
• Topstep Trading Combine (accessed 2026-08-24): Maximum Loss Limit that must not be hit or gone below; trailing with end-of-day balance, never moving down, locking at the starting balance; monitored in real time including unrealised P/L; liquidation possible on contact with the limit; 50% Consistency Target with required total equal to best day divided by 0.50; trading day defined as 5:00 PM CT to 3:10 PM CT next calendar day. [2] [3] [4]

Why passing a simulation does not prove live results

Hypothetical or simulated results may not reflect real-market conditions, loss absorption, spreads, fees, data subscriptions, liquidity or actual execution, as the CFTC's advisory on internet-sold trading systems explains. A stop order may fill better, worse, or not at all. No system guarantees profits. Build buffers into your plan accordingly, because a simulation pass says little about how slippage and costs will behave elsewhere. [6]

On the broader landscape, the CFTC's forex fraud material warns that promotions offering to trade with a proprietary firm's money and share profits may not live up to the hype, and advises understanding the documents, fees, risks and the party involved before committing funds. Read who you are contracting with and what the terms actually say. [5]

Building a pre-trade risk budget

1. Identify the active overall floor and compute the distance from current equity to it.
2. Identify the active daily floor and compute the distance from the current daily reference to it.
3. Take the tighter of the two rooms as your working budget for the session.
4. Subtract an operational buffer sized to your instruments and methods. There is no single buffer percentage that fits every situation. The buffer should account for instrument volatility, position size, spread, commissions, swaps, gap risk around news or sessions, and execution uncertainty including the possibility that protective orders fill worse than expected. [6]
5. Size positions so that worst-case fills plus costs stay inside the buffered budget, not merely inside the raw rule.

Dashboards are convenient; the saved rulebook provides the definition

Provider dashboards often display metrics labelled something like drawdown remaining. Useful as these are, never assume the label implements the formula you expect. It may measure balance rather than equity, exclude costs, update at a different moment, or use a different high-water event. The saved rulebook and terms you accepted govern interpretation; treat dashboard numbers as a convenience cross-check, not the definition.

What to preserve after an apparent rule stop

If an account appears to have been stopped, preserve evidence before contacting support: the rule version and terms in force, the account phase, screenshots of the dashboard immediately before and after, order identifiers, platform timestamps, the balance and equity history, commission and swap records, liquidation records, and all support correspondence. Preservation supports a factual review of what happened. It does not guarantee reinstatement, a refund or any payout, and no outcome should be promised or assumed.

Pre-purchase rule-sheet checklist

Complete every line below before paying for an evaluation, and date-stamp the whole sheet.

1. Save the dated rules and full terms as accepted at purchase, including any change-notice terms describing how and when the provider may alter them.
2. Record the legal entity you contract with and confirm explicitly whether trading is simulated.
3. Record the programme name and phase, since rules differ across both.
4. Write out each formula in your own notation: base amount, high-water event, update frequency, monitoring frequency, reset timezone, included P/L and costs, and the exact equality wording (hit, touch, fall below).
5. Note the liquidation method: what happens on contact with a limit and whether unrealised P/L counts.
6. Record the consistency denominator, whether excess days breach or merely delay eligibility, and any separate payout-path formulas.
7. List prohibited strategies, platform time settings, minimum trading days, and the profit target.
8. Compute your own numbers: overall floor, daily floor, tighter room, operational buffer, and maximum position size consistent with the buffered budget.