Daily Loss Limit in Prop Firms: How It Is Calculated and How to Stay Inside It
The daily loss limit caps what you can lose in one trading day. See the common formulas, a $100K example and a plan to stay inside it.
OctoFunded Trading DeskUpdated ยท 8 min read
A prop firm daily loss limit is the maximum amount your account can lose in one trading day, counted from a reference point set at the start of that day. If your equity crosses that line, even briefly, the account fails. On a $100K account with a 5% limit, that line sits $5,000 below the reference.
The daily limit is much tighter than the max drawdown, so it is the rule most likely to end an account in one bad session. This guide shows the common formulas, a worked example and a plan to stay inside it.
Key takeaways
- It resets every day: the limit applies to each trading day on its own, from a fresh reference point.
- The reference point matters: a percentage of the initial balance gives a fixed dollar amount. A percentage of start-of-day balance or equity moves with your account.
- Floating losses count: if the rule is equity-based, open trades in the red count toward it.
- It runs alongside the max drawdown: breaking either rule fails the account.
- Your real budget is the closer floor: if the max drawdown floor is nearer than the daily floor, that is the line you must respect.
What is a daily loss limit in a prop firm?
A daily loss limit is a cap on how much your account can lose within one trading day. It works next to the max drawdown, which caps the total loss for the whole account.
The max drawdown stops a slow slide over weeks. The daily limit stops one session, such as a revenge-trading spiral, from doing all the damage at once.
At OctoFunded, each program pairs a daily limit with a max drawdown:
- 2-Step: 5% daily loss limit, 10% static max drawdown.
- 1-Step: 4% daily loss limit, 8% trailing max drawdown.
- Instant Funded: 3% daily loss limit, 6% trailing max drawdown.
If you want the detail on the second rule, see how static and trailing drawdown move on the same account.
How is the daily loss limit calculated?
The daily loss limit is a percentage applied to a reference value, and the choice of reference value is where firms differ. The floor for the day is the start-of-day value minus that limit.
Formula: daily floor = start-of-day reference minus (limit % x base value)
Three methods are common across the industry:
- Fixed, from the initial balance. The dollar limit never changes. On $100K at 5%, you can lose $5,000 each day, whatever your balance is.
- From the start-of-day balance. The limit is a percentage of the previous day's closing balance. It grows when the account grows and shrinks after losses.
- From the higher of start-of-day balance or equity. If you hold a winning trade overnight, its floating profit raises the reference. Giving that open profit back then counts as a daily loss.
Two more details decide whether you breach or not:
- What counts. Closed losses, floating losses on open trades and, at most firms, commissions and swaps.
- When the day resets. Each firm resets at a fixed server time. Know the exact hour, because a trade open across the reset changes which day its loss belongs to.
Check the OctoFunded program rules for the reference point and reset time used on each program before you trade.
What does the daily loss limit look like on a $100K account?
On a $100K simulated account, the OctoFunded daily limits are $5,000, $4,000 and $3,000 when taken as a share of $100,000. Here they are next to the max drawdown for each program.
| Program | Daily loss limit (%) | Daily limit on $100,000 ($) | Max drawdown (%) | Max drawdown on $100,000 ($) | Drawdown type |
|---|---|---|---|---|---|
| 2-Step | 5% | $5,000 | 10% | $10,000 | Static |
| 1-Step | 4% | $4,000 | 8% | $8,000 | Trailing |
| Instant Funded | 3% | $3,000 | 6% | $6,000 | Trailing |
One ratio is worth remembering: in every program, two full daily losses equal the whole max drawdown. Hitting the daily limit even once uses up half of your total room.
Worked example: same trades, two methods. This is an example of methods 1 and 2 above with a 5% limit, not a statement of how OctoFunded calculates it. A $100K account starts the day at a $103,000 balance after earlier profits.
| Moment | Equity ($) | Method 1 floor: 5% of $100,000 ($) | Method 2 floor: 5% of $103,000 ($) | Result |
|---|---|---|---|---|
| Start of day | $103,000 | $98,000 | $97,850 | Both safe |
| After a closed loss of $2,800 | $100,200 | $98,000 | $97,850 | Both safe |
| Open trade at a floating loss of $2,300 | $97,900 | $98,000 | $97,850 | Method 1 breached, Method 2 safe by $50 |
Step by step:
- Method 1: 5% of $100,000 is $5,000, so the floor is $103,000 minus $5,000, which is $98,000.
- Method 2: 5% of $103,000 is $5,150, so the floor is $103,000 minus $5,150, which is $97,850.
Only $2,800 of losses were closed; the open trade did the rest. Under method 1 the account fails the moment equity dips under $98,000. Under method 2 there is $50 of room left, less than a wide spread on a busy day.
The overnight trap. Under method 3, say you start the day at a $103,000 balance with an open trade showing +$1,500, so equity is $104,500. With a fixed $5,000 limit, the floor is $99,500. If that trade drifts back to breakeven and you lose $3,500 on other trades, equity is $99,500 and you have hit the limit, even though your balance only fell $3,500.
When does the daily loss limit matter most?
The daily loss limit matters most on days when losses can stack up faster than you can react. A few situations deserve extra care.
- News releases. Spreads widen and stops can fill worse than planned, so a $1,000 planned loss can become more.
- Correlated positions. Several trades that depend on the same currency behave like one larger trade. Three positions each risking 1% can lose 3% together, which is the whole daily limit on Instant Funded.
- After a winning streak. Raising size because you feel ahead makes each loss a bigger share of the limit.
- Trades held across the reset. A floating loss carried into a new day can start that day already close to the floor.
- EAs running several strategies. Each may respect its own stop while the combined loss breaks the limit.
How do you stay inside the daily loss limit?
- Write your floor down before the first trade. Note the reference value, the limit in dollars and the resulting floor for the day.
- Set a personal daily stop above the firm's floor. For example, with the 1-Step's 4% limit ($4,000 on $100,000), you might stop for the day at a $2,000 loss. This is an example of a buffer, not a recommendation for your account.
- Size each trade as a fraction of the daily limit. Risking $500 per trade against a $4,000 limit allows 8 full losses. Risking $1,000 allows only 4.
- Count open risk, not just closed losses. Add today's closed loss to the stop distance of every open trade. That total must stay under your daily room.
- Leave room for slippage. Keep a few hundred dollars between your worst-case loss and the floor to absorb gaps and wide spreads.
- Build the guard into your EA. An equity check that closes all trades and stops for the day at your personal stop removes the decision from the heat of the moment. OctoFunded allows EAs.
- Do not try to win it back the same day. OctoFunded has no time limit, so a red day can simply end. The next session starts with a fresh daily limit.
Red days also lower total profit, which raises your best day's share under the best day rule. Still choosing? See which program fits your risk.
FAQ
Do floating losses count toward the daily loss limit?
Usually yes when the limit is measured on equity, because equity includes open trades. A balance-based limit only counts losses once trades are closed.
When does the daily loss limit reset?
It resets once per trading day at a fixed server time set by the firm. Learn that exact time, because a trade open across the reset can change which day a loss counts in.
Is the daily loss limit the same as the max drawdown?
No. The daily loss limit caps the loss inside one trading day, while the max drawdown caps the total loss for the account. They run together, and breaking either one fails the account.
What are the OctoFunded daily loss limits?
The 2-Step has a 5% daily loss limit, the 1-Step 4% and Instant Funded 3%. As shares of $100,000, that is $5,000, $4,000 and $3,000.
Do commissions and swaps count toward the daily loss limit?
At most firms they do, because they reduce your balance and equity like any other loss. Check the rules of your program to be sure.
Choose a daily limit you can trade inside
Your daily limit should fit your worst normal day with room to spare. OctoFunded offers 5%, 4% and 3% daily limits across the 2-Step, 1-Step and Instant Funded, all on simulated capital, for a one-time fee and with no time limit.
