6 min readMyTradingBuddy
Trailing Drawdown Explained: Intraday vs End of Day
Understand trailing drawdown with a $50,000 account example. Compare intraday, end-of-day and static limits, then check your remaining risk buffer.
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Trailing drawdown is a loss limit that moves upward as an account reaches new qualifying highs. The awkward part is that your remaining room can shrink even when a trade finishes green. If unrealized profit raises the limit and then disappears, the higher limit may stay.
Nothing here is financial advice. The firm's live rules win if they disagree with this page. A passed evaluation is not a payout.
We use one hypothetical $50,000 account below to show the mechanics. The account label is not your loss allowance. What matters before an entry is the distance between your current equity and the account's actual breach floor.
What is trailing drawdown?
Think of the breach floor as the equity level your account must stay above. A trailing limit raises that floor when the account reaches a new qualifying high. Under a typical trailing rule, subsequent losses do not push the floor back down.
Three numbers do different jobs:
- Account equity: balance plus open profit or loss, subject to the platform's fee treatment.
- Breach floor: the threshold at which the firm's loss rule is violated.
- Remaining buffer: current equity minus that floor.
A $50,000 account with a $48,000 floor has $2,000 of initial room. That does not mean you can lose $2,000 on every trade, or every day. Daily limits, fees, positions already open and other rules can restrict you further.
The broader prop-firm challenge process starts with these constraints. A chart setup is only one part of deciding whether an entry fits your plan.
Intraday, end-of-day and static limits compared
The key difference is what moves the floor. These are general models; the exact account agreement decides how each one works.
| Model | What can raise the floor? | What to watch |
|---|---|---|
| Intraday trailing | A new qualifying equity peak during the session; some accounts include unrealized gains | A floating gain can raise the floor before you close the trade |
| End-of-day trailing | A new qualifying closing balance at the firm's daily cutoff | The floor can still be enforced during the session |
| Static | No routine upward movement from trading gains under the basic model | Withdrawals, fees and separate rules can still reduce usable room |
For trailing drawdown vs static drawdown, the practical question is whether yesterday's or today's gains change tomorrow's failure level. A static floor stays where the account rules place it. A trailing floor may follow those gains until a specified stopping point.
Check the cutoff time and time zone too. Your local midnight is not necessarily the firm's end of trading day. “End of day” without a defined cutoff leaves a hole in the plan.
A $50,000 example: same trade, different buffer
Assume all three hypothetical accounts start at $50,000 with a $2,000 loss distance. There are no fees or withdrawals in this simplified example, and the trailing floors have not reached a stopping point.
During one session, equity rises to $51,000. The trade then gives back $700, closes, and the account finishes the day at $50,300.
| Point in the session | Intraday floor | End-of-day floor | Static floor |
|---|---|---|---|
| Start: equity $50,000 | $48,000 | $48,000 | $48,000 |
| Open trade reaches $51,000 | $49,000 | $48,000 | $48,000 |
| Trade closes at $50,300, before daily reset | $49,000 | $48,000 | $48,000 |
| After the qualifying daily close | $49,000 | $48,300 | $48,000 |
| Remaining buffer after that close | $1,300 | $2,000 | $2,300 |
The same $300 net gain produces three different buffers. On the intraday model, the $51,000 peak moved the floor to $49,000. Giving back part of the profit did not reverse that move.
This is why an account can finish a winning trade with less room than it had before entry. The account did not become red; its floor moved closer. Reviewing only closed profit would miss that change.
Why end-of-day does not mean end-of-day enforcement
The time a limit updates and the time a breach is checked are separate rules. An end-of-day calculation does not automatically allow equity to fall through the existing floor during the session.
For example, Topstep's Maximum Loss Limit documentation describes a floor that rises with the end-of-day balance, while the limit is monitored in real time and includes unrealized profit or loss. Its standard $50,000 Trading Combine has a $2,000 Maximum Loss Limit distance. These details do not establish the rules for every Topstep product.
By comparison, Apex's intraday account documentation describes a threshold that follows the highest equity reached, including unrealized gains. Touching or falling below the threshold triggers the breach. That page applies to the named intraday accounts; do not extend it to every Apex account category.
Those official examples were checked on September 30, 2026. Before trading, match the documentation to your firm, account stage, size and platform. A familiar brand name is not a complete rule specification.
Turn the remaining buffer into trade math
In our intraday example, current equity is $50,300 and the breach floor is $49,000. The remaining buffer is $1,300. That number is a boundary to protect, not a suggested amount to risk on the next trade.
Now suppose a planned stop is 20 Nasdaq points from entry. CME's Nasdaq futures specifications give NQ a $20 multiplier per index point and MNQ a $2 multiplier. Before commissions and slippage, that hypothetical stop distance represents:
- One NQ contract: 20 points × $20 = $400.
- One MNQ contract: 20 points × $2 = $40.
- Three NQ contracts: 20 points × $20 × 3 = $1,200.
The third example leaves only $100 between the planned loss and the account's $1,300 buffer, before costs or a worse fill. It shows how quickly nominal account size becomes a distraction. It is not a recommendation to use any of these sizes.
Account for existing positions as well. Two trades exposed to the same market move can consume room together. A stop order does not guarantee the assumed fill, especially when prices move quickly; the NQ high-impact news guide gives that scenario a separate place in the session plan.
What changes after a payout or account upgrade?
Recalculate instead of carrying the old buffer forward. If a hypothetical account has $52,000 of equity and a $50,100 floor, its buffer is $1,900. A $1,000 withdrawal would leave $900 if the floor stayed unchanged. Actual payout rules may also reset the floor.
Topstep's documentation, linked above, specifies a first-payout change to the Maximum Loss Limit on its Express account. It also uses a different displayed starting balance from a Trading Combine. Apex's intraday documentation describes stopping rules that differ by account type and, for evaluations, platform. A screenshot from another trader may therefore describe a different arrangement.
Write down both the post-withdrawal equity and the post-withdrawal floor before treating money as available to remove. For account-specific context, read the Lucid Flex account rules, then verify the current terms directly with the firm.
A five-minute rule check before the next session
Open the firm's own dashboard and complete this short worksheet:
- Identify the account. Record firm, product, size, evaluation or post-evaluation stage, and platform.
- Copy the live floor. Record its value and the time checked. Confirm whether touching it counts as a breach.
- Calculate current room. Subtract the floor from current equity; include the effect of open positions and costs.
- Check what moves it. Identify unrealized-equity or closing-balance treatment, the daily cutoff and any stopping rule.
- Compare the written trade plan. Check contract size, stop distance, other positions and separate daily restrictions against that room.
If the dashboard and your calculation disagree, resolve the difference before placing another trade. Guessing which number is correct makes the rest of the worksheet decorative.
Use MyTradingBuddy Ai for a second read of your chart and written plan. Keep the prop-firm platform as the source of truth for the live account limit. You make the trade decision; a chart explanation does not replace the firm's risk controls.
Related reading
The next useful step is to put the rule into a repeatable session routine. Our guide to why traders fail prop-firm evaluations covers process mistakes around otherwise plausible setups. Start with the mistake that matches your own journal, then add one concrete check to tomorrow's plan.