The 1% Rule in Trading: What It Is and Why It Works
The 1% rule in trading caps the loss on any trade at 1% of your account. Why it survives losing streaks, how to size lots from it and when 0.5% is better.
Accounts are usually lost on a run of ordinary losing trades that were each a little too big. The 1% rule in trading exists to stop that happening, and it is simpler than it sounds.
Quick answer: The 1% rule in trading means you never lose more than 1% of your account on a single trade. On a $5,000 account that is $50. You place the stop where the chart says your idea is wrong, then choose the lot size so that hitting the stop costs no more than that 1%.
What is the 1 percent rule in trading?
The 1% rule is a limit on risk per trade: the amount of money you lose if your stop loss is hit. It says that amount should be no more than 1% of your trading account. It is a ceiling, not a target, so 0.5% is still within the rule and 2% is not.
It is a long-standing rule of thumb among traders, not a regulation. No regulator or broker sets it, and nobody checks whether you follow it. That is part of its value: it is one number, small enough to survive bad luck, simple enough to apply on every trade without a spreadsheet.
The rule has three moving parts, and it only works if you keep them in the right order:
- The money at risk. Take your account balance and multiply by 1%. A $2,000 account can lose $20 on a trade; a $10,000 account can lose $100.
- The stop. Place it where the chart proves your trade idea wrong, plus a small buffer for the spread. The stop comes from the market, not from your wallet.
- The size. Choose the position size so that the distance to the stop, multiplied by what each pip is worth, equals the money at risk.
The rule does not say “trade a position worth 1% of your account”, and it does not say “put your stop 1% away from the entry price”. Both readings turn up all the time, and the second one is far more dangerous than it looks. On EUR/USD, a 1% price move is more than 100 pips, which is several days of normal movement.
The Academy lesson on risk per trade is the hub for this topic, with a short quiz to check you have the order right. If you want the wider picture, our guide to forex risk management shows where this one rule sits among the others.
Why the 1% rule works: surviving losing streaks
Losing streaks are normal, and long ones are close to certain if you trade for long enough.
Take a method that wins 40% of the time, which is ordinary for trend-following approaches that aim for winners larger than their losers. The chance of at least one run of six or more losses in a row somewhere in 100 trades is about 87%. Over 1,000 trades, the chance of a run of ten in a row is over 90%. A method that wins half its trades is not immune either: over 500 trades it is very likely to produce six straight losses at some point. None of this means the method is broken. It is simply what a sequence of uncertain outcomes looks like.
Now put that streak against different risk settings. Because each loss is a percentage of what is left, ten losses at 1% do not cost exactly 10%: they cost 1 − 0.99¹⁰, which is about 9.6%.
| Risk per trade | Left after 10 straight losses | Drawdown | Gain needed to recover |
|---|---|---|---|
| 0.5% | 95.1% | −4.9% | +5.1% |
| 1% | 90.4% | −9.6% | +10.6% |
| 2% | 81.7% | −18.3% | +22.4% |
| 5% | 59.9% | −40.1% | +67.0% |
| 10% | 34.9% | −65.1% | +186.8% |
Try the same streak yourself. Move the slider in the ladder below and watch what ten losses in a row do at each setting.
For comparison: at 1% you keep 90%, at 5% you keep 60%, at 10% you keep 35%.
Ten losing trades in a row at the chosen risk per trade. At 1% the account keeps about 90% of its value; at 5% it keeps about 60%, and at 10% only about 35%.
The table’s last column is where the real damage shows. A drawdown is the fall from your account’s peak to its low, and recovering from it takes a larger percentage gain than the loss, because you are growing a smaller balance. The curve below shows how quickly that gap widens.
The gain needed to recover from each drawdown. A 10% fall needs 11% to get back; a 50% fall needs 100%. The 1% rule keeps an ordinary losing streak on the flat, cheap part of this curve.
At 1% risk, a ten-trade losing streak leaves you needing a 10.6% gain: a few good weeks for a working method. At 5%, you need 67%, and at 10% you need the account to nearly triple. There is also a cost that does not show in the arithmetic. A 9.6% drawdown is uncomfortable but you can keep trading your plan through it. A 40% drawdown changes how you think, and traders in deep drawdowns tend to start breaking their own rules to get the money back quickly, which our guide to revenge trading covers in detail.
The 1% rule does not make a method profitable, and it does not improve your entries. It keeps the cost of bad luck small enough that you are still trading, still following the plan, when the method’s good stretches arrive. Whether there is a positive edge to wait for is a separate question, answered by your expectancy and covered in our guide to trading expectancy. The Academy lesson on the maths of drawdowns goes through the recovery formula step by step.
How the 1% rule converts to lot size
A risk percentage only becomes a rule when it turns into a number you type into the volume box. The conversion uses one formula:
Lots = money at risk ÷ (stop in pips × pip value per standard lot)
For EUR/USD, GBP/USD and any pair quoted in US dollars, one standard lot of 100,000 units is worth about $10 a pip if your account is in dollars. So on a $5,000 account risking 1%, or $50, with a 25-pip stop, the size is 50 ÷ (25 × 10) = 0.20 lots.
The money at risk stays fixed while the size moves: a wide stop gives a small position, a tight stop a larger one.
Pip value is the input people most often get wrong. It is not $10 for every pair. For USD/JPY near 150.00, one pip on a standard lot is 1,000 yen, which is about $6.67. So a $3,000 account risking 1% ($30) with a 30-pip stop on USD/JPY trades 30 ÷ (30 × 6.67) = 0.15 lots, not the 0.10 lots you would get by assuming $10 a pip. Our guide to pip value by currency pair shows the calculation for crosses and non-dollar accounts, and the Forex Foundations lesson on position sizing lets you practise it.
Two practical adjustments keep the rule honest:
- Round down, never up. If the formula gives 0.1667 lots and your broker trades in steps of 0.01, use 0.16. Rounding up quietly pushes you over 1% on every trade.
- Respect the minimum lot. The smallest size most brokers offer is 0.01 lots, about $0.10 a pip on EUR/USD. On a $1,000 account, 1% is $10, so the widest stop you can use at that size is 100 pips. On a $300 account it is 30 pips. If the chart needs a wider stop than your account allows at 1%, skip the trade rather than bend the rule. Our guide to how much money you need to start works through this floor for several account sizes.
Check any of these numbers in the calculator below: change the stop and the size moves, while the money at risk stays put.
One last caution. The 1% is the loss at the stop price. If the market gaps over a weekend, or jumps on a major data release, your order can be filled beyond the stop and the loss can be larger than planned. Slippage of this kind is the reason many traders size slightly under 1% when they hold through news or over a weekend. Our guide to slippage in forex explains when it happens.
1% of your current balance or your starting balance?
The rule says 1% of “your account”, but your account changes after every trade. Should you take 1% of what you started with, or of what you have now? The answer most risk frameworks use is 1% of your current balance. Put the two side by side during a losing run and you can see why.
If you fix your risk at 1% of a $10,000 starting balance, every trade risks $100 no matter what happens. If you take 1% of the current balance, the amount at risk shrinks as the account falls: $100 on the first trade, about $95 after five losses, about $90 after ten.
The difference over ten trades is small: −9.6% against −10%. Over a long, ugly run it becomes meaningful. More important is what happens to the percentage you are risking. After the fixed-dollar account has fallen to $6,000, a $100 loss is 1.67% of what is left, so the account is risking more of itself exactly when it can least afford to. Sizing from the current balance does the opposite: your positions shrink automatically during a drawdown, at the moment your judgement is most likely to be shaken, without you having to decide anything.
The same logic works in reverse after a winning run. At $12,000, 1% is $120, so your positions grow in proportion to the account, but a single loss never becomes a larger share of it than it was at the start.
A few practical points:
- Use the balance, or a number just below it. If you have trades open, your equity moves around with them. The simplest habit is to size from your closed balance and count open trades separately, as described in the section on combining limits below.
- Recalculate on a schedule if per-trade is too fiddly. Some traders update their 1% figure once a week, or only when the balance crosses a round number. That is fine, as long as you update downwards promptly during a drawdown.
- Do not reset to the starting balance after losses. Sizing back up to your old $100 because “that’s my normal size” is the fixed-dollar line in the chart with extra steps.
When 0.5% is better than 1%
The 1% rule is a ceiling. Plenty of experienced traders risk less, and there are clear situations where half that, 0.5% per trade, is the wiser setting. The arithmetic behind it is simple: halving your risk roughly doubles the number of straight losses it takes to reach any given drawdown.
Consider dropping to 0.5% in these cases:
- Your first months of live trading. Real money feels different from a demo, and early mistakes are cheaper at half size. A sensible approach is to run your first 50 to 100 live trades at 0.5%, and move up only if your journal shows you followed the plan.
- During a drawdown. A common plan rule is to halve risk once the account is a set distance below its peak, such as 10%, and return to 1% only after recovering part of it. This slows the damage while you check whether the problem is the market, the method or you.
- When trades are correlated. Two trades that both depend on the US dollar falling are really one idea. Risking 0.5% on each keeps the combined risk near 1%. The lesson on correlation risk and our guide to currency correlation show how to spot these pairs.
- When you trade often. If your method takes five or six trades a day, a bad session at 1% each can cost 5% before lunch. Lower risk per trade keeps the day’s total in proportion.
- When you are testing something new. A fresh method has no track record. Until it has a few dozen trades behind it, it has not earned full size.
The simulator below runs 100 trades with whatever settings you choose. Try a 40% win rate at 1% risk, then at 0.5%, and compare the worst drawdown each time.
Each run uses the same settings with different luck. Run it several times: the shape changes, the drawdowns don't go away.
Going the other way is a different decision. Moving from 1% to 1.5% or 2% is something to write into your plan after reviewing a meaningful sample of trades, not something to do because the last few went well or the next one looks good. We suggest treating 2% as the ceiling.
Combining the 1% rule with daily loss limits
The 1% rule caps the cost of a single trade. It says nothing about how many trades can lose in a row on the same afternoon. That is the job of a daily loss limit: a fixed loss, in money or in losing trades, at which you close the platform for the day.
The two rules protect against different things. The 1% rule protects the account from any one trade. The daily limit protects it from a bad session, and from you during that session, because two or three losses in a morning are exactly when rules start to bend.
A workable set of limits for someone risking 1% per trade looks like this, and it matches the example plan in the Academy lesson on writing a trading plan:
- Per trade: 1% of the current balance, set by the stop and the size.
- Total open risk: for example 3%, counting correlated trades together, so three open trades on unrelated pairs is the most you carry at once.
- Per day: two losses or −2%, whichever comes first. Then stop.
- Per week: for example −4%. No new trades until the following week.
- Drawdown from the peak: at −10%, halve the risk to 0.5% and review your journal.
Count open risk as well as closed losses. If you are down 1.5% for the day and have a trade open risking another 1%, you are effectively at your limit already. And the setup that appears just after you hit the limit will nearly always look like the best of the week. Write it in your journal and look at it tomorrow. Our guide to handling a losing streak and the lesson on losing streaks cover what to do in the days after.
Here is how the pieces fit together.
Common misreadings of the 1% rule
The rule is short, which makes it easy to misread in ways that cause real damage.
Treating 1% as a price move or a stop distance
As the first diagram showed, a 1% move in EUR/USD is over 100 pips. A stop placed “1% away” with a large position can cost a fifth of the account or more. The 1% refers to the money you lose, measured against the account, and nothing else. Your stop comes from the chart; our guide on where to place a stop loss shows how.
Taking 1% of the margin or the position
Some traders read the rule as “use 1% of my account as margin” or “open a position worth 1% of my balance”. Neither says anything about what you lose at the stop. With leverage, a small margin can control a position large enough to lose far more than 1%. Our guide to leverage in forex explains why the margin figure and the risk figure are unrelated.
Applying 1% per trade but forgetting what is already open
Five open trades at 1% each is 5% at stake. If they are all short the US dollar, they behave like one 5% trade and can all stop out on the same data release. The 1% rule needs a cap on total open risk alongside it.
Using one lot size for every trade
“0.1 lots is about 1% for me” is only true for one stop distance on one kind of pair. A wider stop, or a pair with a different pip value, changes the risk without changing the size. Recalculate on every trade; it takes ten seconds. Our guide to position sizing walks through the steps.
Raising the risk when you feel sure
Confidence is not information. The trades you feel certain about lose at roughly the same rate as the others, and the oversized ones are the losses that end accounts. The same goes for raising risk to win back losses. Try the decision below.
What would you do?
You are up 12% this month after a good run, all at 1% risk. A setup appears that matches every rule in your plan and looks like the cleanest of the month. You are tempted to risk 3% on it. What do you do?
Expecting the rule to make you profitable
The 1% rule controls how much you lose while you find out whether your method works. It cannot turn a method with negative expectancy into a positive one; it only makes the decline slower. Pair it with a sound risk-reward ratio and a record of results, and remember that regulators in the UK and EU require CFD providers to publish the percentage of retail accounts that lose money, and it is usually a majority (ESMA explains the rules behind those warnings).
Frequently asked questions
What is the 1% rule in trading?
The 1% rule means you never risk more than 1% of your trading account on a single trade. If your stop loss is hit, the loss is at most 1% of the balance: $50 on a $5,000 account. You set the stop from the chart, then size the position so the loss at the stop fits within that limit.
How do I calculate lot size with the 1% rule?
Multiply your balance by 1% to get the money at risk, then divide by the stop distance in pips times the pip value per standard lot. On a $5,000 account with a 25-pip stop on EUR/USD: $50 ÷ (25 × $10) = 0.20 lots. Round down to your broker's lot step.
Is the 1% rule too conservative for a small account?
It feels slow, because 1% of $500 is only $5 a trade. But raising risk to make small accounts grow faster is the most common way they are lost. If 1% feels too small to bother with, keep practising and add savings over time rather than raising the risk percentage.
Should I use 1% of my starting balance or current balance?
Most traders use the current balance. Your risk then shrinks automatically during a drawdown and grows in proportion after gains. Using a fixed amount from the starting balance means you risk a larger share of the account exactly when it has fallen, which speeds up losses.
Is it better to risk 1% or 2% per trade?
Both are within the range most guidance suggests, but 1% gives you far more room for losing streaks: ten straight losses cost about 9.6% at 1% and about 18.3% at 2%. Beginners, traders in a drawdown and anyone taking many trades a day are usually better served by 1% or even 0.5%.
Can I lose more than 1% even with a stop loss?
Yes. A stop loss becomes a market order when it is triggered, so in a fast market, on a news release or over a weekend gap it can be filled at a worse price. The 1% is the loss at your stop price, not a hard cap. Size a little smaller around major events.
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