TPThe Trading Playbook

RebelsFunding $640,000 Challenge — Position Size Calculator

Quick Answer

RebelsFunding's $640k account has no daily loss limit ($0), meaning there are no daily restrictions on your losses. With 1% risk, you'd be risking $6,400 per trade, allowing for a position size of approximately 21.3 lots on EURUSD with a 30-pip stop loss. This unique structure means your only constraint is your own risk management discipline.

Position Size Calculator
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pips
0.5%5%
Firm Rules Summary
Max Daily Loss$0 (0%)
Max Total Loss$0 (0%)
Profit Target (Phase 1)$0 (0%)
Min Trading Days0 days
Consistency RuleNo
Risk Guide
RebelsFunding's $640k account presents a unique scenario in prop trading - zero daily loss limits and zero drawdown limits. This means you face no firm-imposed daily restrictions, making position sizing entirely dependent on your personal risk management strategy. At 1% risk per trade, you're looking at $6,400 per position. Since there's no daily loss limit, theoretically you could take unlimited consecutive losses without violating firm rules, but this would obviously be catastrophic for your account. The real danger here isn't rule violation - it's complete account destruction through poor risk management. With $6,400 at 1% risk, you could size 21.3 lots on EURUSD with a 30-pip stop (using $30 per pip value). For Gold with a 20-pip stop at roughly $200 per pip, you'd trade 3.2 lots. At 2% risk ($12,800), these sizes double to 42.6 lots EURUSD and 6.4 lots Gold respectively. The mathematics become critical: while most prop firms force conservative sizing through daily limits, RebelsFunding places complete responsibility on the trader. A series of 2% losses could devastate the account quickly - ten consecutive 2% losses would remove roughly $115,000 from your account through compound losses. The absence of phase transitions (single-phase challenge) means these sizing calculations remain constant throughout your trading period. Unlike traditional prop firm structures where you might face tightening restrictions, your position sizing flexibility remains unchanged. This freedom demands exceptional discipline - consider implementing your own daily loss limits despite the firm not requiring them. Many successful traders on unlimited accounts still cap daily losses at 3-5% to prevent emotional trading spirals.
Frequently Asked Questions

RebelsFunding 640k Calculator — FAQ

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Last verified: 2 April 2026. Always confirm current rules directly with RebelsFunding before trading.