Prop Firm Trailing Drawdown Calculator
Enter your daily P&L to see where an end-of-day, intraday or static drawdown floor would sit each day, how much room was left, whether the account would have failed, and how your best day compares with a consistency rule.
Account rules
Topstep figures from its help center, checked October 5, 2026. Rules change and differ by firm and account type.
Default 50%. Firms use different percentages and bases, so enter your firm's current rule.
Daily P&L
Net closing P&L for each trading day, in dollars. Use a minus sign for losses.
- D1
- D2
- D3
- D4
- D5
Result
After day 5: balance $51,200.00, floor $50,000.00 (locked), $1,200.00 of room left.
Consistency
Best day $1,200.00 is 100.0% of $1,200.00 net profit. Over the 50% limit: you would need $1,200.00 more profit without a bigger day to qualify.
| Day | Balance | High | Floor | Room |
|---|---|---|---|---|
| 1 | $50,800.00 | $50,800.00 | $48,800.00 | $2,000.00 |
| 2 | $50,500.00 | $50,800.00 | $48,800.00 | $1,700.00 |
| 3 | $51,700.00 | $51,700.00 | $49,700.00 | $2,000.00 |
| 4 | $52,100.00 | $52,100.00 | $50,000.00* | $2,100.00 |
| 5 | $51,200.00 | $52,100.00 | $50,000.00* | $1,200.00 |
* Floor locked at the starting balance. Rows after a breach are shown greyed for reference only.
Learn the rules before the evaluation
The free Futures Trading course covers contract specs, position sizing and prop firm rules, with clear risk warnings. Size each trade against your remaining room with the ES futures calculator.
Free futures course (sign-in required)How the drawdown floor is calculated
High-water = highest closing balance so far (intraday: also the day's peak) Floor = max(previous floor, High-water − Limit) Lock on = Floor never goes above the starting balance Static = Starting balance − Limit, always Breach = closing balance ≤ Floor
Example with a 50K account and a $2,000 end-of-day limit: the floor starts at $48,000. A +$1,000 day closes at $51,000 and lifts the floor to $49,000. A +$1,500 day closes at $52,500; the trailing floor would be $50,500, but it locks at the $50,000 start. A −$3,000 day then closes at $49,500, below the floor, so the account fails on day 3. On a static $2,000 limit the same days would still be open, $1,500 above a $48,000 floor.
- Topstep's Maximum Loss Limit. Topstep's help center lists $2,000 for the 50K Trading Combine, $3,000 for the 100K and $4,500 for the 150K. It rises with your end-of-day balance, never moves down, locks permanently once it reaches the starting balance, and is monitored in real time. Checked October 5, 2026.
- Consistency rules differ. Firms, and even different account types at one firm, use different percentages and measure against total profit or the profit target. This tool uses net profit over the days you enter; set the percentage to your firm's current rule.
- Intraday lows are not modeled. The tool checks closing balances. A dip below the floor during the session can fail an account in real time even if it closed above it.
Risk: what the numbers leave out
Results are hypothetical and not trading advice. Commissions, fees and slippage are not included, and passing an evaluation does not mean a strategy will make money. The CFTC's futures basics warn that many individuals "lose all of their money, and can be required to pay more than they invested initially." Always read the firm's current rulebook before you trade.
FAQ
What is a trailing drawdown?
A trailing drawdown is a loss limit that follows your account up. The floor sits a fixed amount below the highest balance you have reached, rises when you make a new high and never moves back down. Close at or below the floor and the account fails.
What is the difference between end-of-day and intraday trailing drawdown?
End-of-day trailing only moves the floor up from your closing balance each day. Intraday trailing moves it up from the highest balance reached during the session, including open, unrealized profit, so a winning trade you give back can raise the floor without ever being banked.
What is Topstep's Maximum Loss Limit on a 50K Combine?
Topstep's help center lists a Maximum Loss Limit of $2,000 on the 50K Trading Combine, $3,000 on the 100K and $4,500 on the 150K. It trails your end-of-day balance, never moves down and locks permanently once it reaches the starting balance. Check Topstep's current rules before trading.
What does it mean when the drawdown locks at the starting balance?
Once your high-water balance is a full loss limit above the start, the floor stops trailing and stays at the starting balance. On a 50K account with a $2,000 limit that happens at a $52,000 high: from then on the account fails only if the balance falls to $50,000.
How does a consistency rule work?
A consistency rule caps how much of your total profit can come from one day. With a 50% rule, a $1,200 best day needs at least $2,400 of total profit. Firms set different percentages for evaluations and funded accounts, and some measure against the profit target instead, so check the firm's current rules.
Does this calculator catch every breach?
No. It checks each day's closing balance, plus the peak you enter for intraday mode. A firm monitors the limit in real time, so a balance that dipped below the floor during the day can fail the account even if it closed above it. Fees and commissions are not modeled.