Specialized technical guide
Consistency Rule Guide: How to protect your profits
The most violated and least understood rule in prop firms. Learn to calculate and comply with 30%, 40% and 50% consistency to ensure your withdrawals are not rejected.
Updated on April 13, 2026 | By Agustin Bianciotti - Trader with more than 4 years in the market
📊 What is the Consistency Rule?
The concept that can invalidate months of work in a single day
📑 Quick index
The consistency rule is one of the most important and least understood policies in funding companies. In essence, it establishes that "one lucky day should not represent more than X% of your total profit". Prop firms implement this rule to ensure that you are a consistent trader and not someone who had a lucky day but cannot maintain sustainable results.
📋 Types of Consistency Rules
Know the different variants you'll find
📊 30%/40% Rule - The Most Common
The 30 percent trading rule is the most implemented in futures firms. It limits your best day to no more than 30% (or 40% in some firms) of your total profit.
🧮 Basic Calculation:
Total Goal: $10,000
Daily Limit (30%): $10,000 × 0.30 = $3,000
Daily Limit (40%): $10,000 × 0.40 = $4,000
⚠️ Common Error:
Many traders believe they can make $3,000 one day and then $7,000 on other days. Wrong! If you make $3,000 on the first day, your new total goal becomes $10,000, and your daily limit adjusts to $3,000.
🏆 Best Day Rule - The Hidden Trap
This variant is more complex: your best day cannot exceed X% of the total, but additionally, if you have an exceptionally good day, you could get "trapped" needing to continue trading to balance the account.
🎯 Problematic Scenario:
Goal: $10,000
Day 1: +$2,800 (28% of goal)
Day 2: +$2,900 (29% of current total)
Day 3: +$3,100 (31% - VIOLATION!)
⚡ The "Trapping" Problem:
If you make $2,900 in one day, your new daily limit becomes $2,900. If you've almost completed your goal, you might need to trade more days just to comply with the rule, increasing your risk.
📈 Lot/Volume Consistency - Total Control
Some firms not only control the money, but also the trading volume. You must maintain a similar position size throughout the evaluation.
📊 Lot Control Example:
- Average lot: 2 contracts per trade
- Rule: You cannot trade more than 50% above your average
- Maximum limit: 3 contracts per trade
- Violation: Trading 4+ contracts in any trade
💡 Why this rule exists:
Firms want to avoid traders dramatically increasing their position size after good profits, which could indicate gambling behavior rather than disciplined trading.
🔢 Detailed Practical Example
Step-by-step analysis of a real evaluation
Initial Setup
Profit goal: $10,000
Consistency rule: 30%
Maximum daily limit: $3,000
📊 Initial calculation:
$10,000 × 0.30 = $3,000 maximum per day
First Trading Days
Day 1: +$1,200 (12% of goal)
Day 2: +$800 (8% of goal)
Day 3: +$1,500 (15% of goal)
📈 Current status:
Total accumulated: $3,500
Best day: $1,500 (42.8% of current total)
⚠️ VIOLATION! Day 3 exceeds 30%
How It Should Have Been
Day 1: +$1,200 (12% of goal)
Day 2: +$800 (8% of goal)
Day 3: +$900 (9% of goal)
✅ Correct status:
Total accumulated: $2,900
Best day: $1,200 (41.4% of current total)
✅ Within allowed limit
⚠️ Common Critical Error
Traders calculate the limit over the initial goal ($10,000), but the rule applies dynamically over the total accumulated at each moment.
💡 Key Tip
Always calculate your daily limit over your current accumulated total, not over the initial goal. The rule is dynamic, not static.
🧮 Automatic Calculation Tool
Don't do the calculations by hand - use our free calculator
Free Consistency Calculator
We've designed a free calculator that analyzes your consistency rule in seconds. Just enter your total profit and your best day.
🚀 Calculator Features:
- Instant calculation: Check if you comply with the rule in real time
- Multiple percentages: Supports 30%, 40% and 50% rules
- Scenario simulator: Test different profit distributions
- Risk alerts: Warns you when you approach the limit
- Results export: Save your calculations for future reference
⭐ Best Firms Without Consistency Rule
Options for traders who prefer to avoid this limitation
🚀 Alpha Futures
Has consistency rule? No
Why it's ideal: Fixed drawdown, fast payouts (5-7 days), no daily limits. Perfect for traders with very variable days.
💎 Bluenox
Has consistency rule? No
Why it's ideal: Affordable evaluations, fixed drawdown, no consistency rules. Excellent for beginner traders.
⚡ FXIFY Futures
Has consistency rule? No
Why it's ideal: Stable platform, no consistency rules, good reputation in the community.
✅ Advantage of no rule
You can have exceptional days without worrying about violating rules. Ideal for strategies that depend on large market movements.
⚠️ Important consideration
Firms without consistency rules usually have other stricter limitations, such as tighter drawdown or higher trading requirements.
🎯 Ready to Master the Consistency Rule?
Use our free calculator and choose the perfect firm for your trading style.
Next lesson of the free course
Tradovate vs. Rithmic: Which platform to choose? →