Track exactly how much you can still lose today before breaching your prop firm's daily drawdown rule. Shows remaining loss buffer and safe position sizes.
enter start and current balance
Start of day balance ($)
Current balance ($)
Daily DD limit (%)
DD type
Remaining Today
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Status
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Losing Trades Left (1% risk)
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Full breakdown (click to copy)
How to Use the Daily Drawdown Calculator
Enter start of day balance — your account balance at the beginning of today's trading session. For most prop firms this is your balance at midnight server time.
Enter current balance — your account balance right now, including any open positions (use equity, not just closed P&L).
Set daily DD limit — your firm's daily drawdown percentage (usually 4–5%). Check your firm's exact rules — FTMO uses 5%, FundedNext uses 4%.
Select DD type — Fixed (from start-of-day balance) or Trailing (from highest balance reached today). Most top firms use trailing — this is stricter.
Check your remaining buffer — the calculator shows exactly how much more you can lose today before breaching. Plan your remaining trades around this number.
⚠️ Critical rule: Always check your remaining daily buffer BEFORE opening a new position. If your buffer is $800 and your trade risks $600, you have almost no margin for error. Either reduce position size or wait until tomorrow.
Understanding Daily Drawdown Rules
Daily drawdown is the most misunderstood rule in prop firm trading. Traders often focus entirely on the maximum drawdown limit and forget that a single bad day — even one where they recover partially — can end their challenge.
📌 Fixed Daily DD
Calculated from your balance at the start of each trading day. Simple: if you start at $100,000 with 5% daily DD, your floor is $95,000 for the entire day, regardless of profits made during the day.
📌 Trailing Daily DD
Calculated from the HIGHEST balance reached at any point during the day, including unrealised profits. If your balance peaks at $102,000 during the day, your floor becomes $96,900 — even if you close that profit. Used by FTMO and most top firms.
🕐 When It Resets
Most firms reset at midnight CET/EET server time. Positions open through midnight can affect both today's and tomorrow's daily DD calculation. Know your broker's server time.
📊 Equity vs Balance
Some firms calculate DD from equity (including open trades), others from balance (closed trades only). FTMO uses equity — meaning a large open losing position counts against your daily limit even before you close it.
The Wednesday triple swap trap
If you hold positions overnight into Wednesday, you pay 3× the normal swap (to cover the weekend). This can unexpectedly reduce your balance and eat into your daily drawdown limit. Factor swap costs into your daily DD calculation when holding overnight.
Daily Drawdown Management Strategies
The 50% rule
Many professional prop firm traders use a personal daily stop loss of 50% of the firm's limit. If the firm allows 5% daily DD, they stop trading after 2.5% drawdown. This creates a safety buffer for slippage, spread widening, and unexpected news events. It also preserves emotional clarity — losses beyond 50% of the limit often trigger emotional trading that leads to full limit breaches.
Session-based trading
Dividing your daily DD budget by trading session (Asian, London, New York) helps prevent a bad morning session from eliminating all afternoon opportunities. Allocate 40% of your daily budget to your primary session and reserve 60% as a buffer.
Tracking equity in real time
The most important habit for prop firm trading is checking your current equity — not just closed P&L — before every trade. Open losing positions consume your daily DD allowance even before you close them. Use this calculator throughout the trading day, not just at the start.
🛡️ Professional approach: Set a hard rule — if you hit 60% of your daily DD limit, close all positions and stop trading for the day. No exceptions. The challenge is won over 30 days, not recovered in one afternoon session.
Frequently Asked Questions
Why is daily drawdown so important?
Daily drawdown breach is the #1 reason prop firm traders fail challenges. Even if you're profitable overall, exceeding the daily loss limit will fail your account instantly. Tracking your remaining buffer throughout the day is essential.
What is the difference between fixed and trailing daily drawdown?
Fixed daily DD: calculated from your balance at the start of each day. Trailing daily DD: calculated from the highest balance reached at any point during the day (including unrealised profits). Trailing is stricter and used by most top prop firms including FTMO.
When does the daily drawdown reset?
Most prop firms reset the daily drawdown limit at midnight server time (usually CET/EET). FTMO resets at midnight Central European Time. Always check your firm's specific server time and reset schedule.