Prop Firm Slippage Analysis: We Tracked 10,000 Trades

Slippage is the silent tax. If you pay $3 commission per lot, but suffer 0.5 pips of slippage, your Real Cost is actually $8 per lot.

Most traders ignore this. We didn't. We deployed execution logger bots on FTMO, E8, FundedNext, and 5 others during December 2025.

The Data

Sample Size: 10,847 Trades. Pairs: EURUSD, GBPJPY, XAUUSD (Gold). Events: Asian Session, London Open, NY Open, NFP Release.

1. Normal Conditions (London Open)

Insight: FTMO and Alpha Capital are effectively near-zero slippage during liquid times. "Budget Firm X" (a generic $30 firm) is stealing 1 pip per trade. Over 100 trades, that is 100 pips ($1,000 on a standard lot). That "cheap" challenge is expensive.

2. High Impact News (NFP)

Insight: Maven Trading held up incredibly well during the chaos. 4 pips on Gold NFP is excellent.

Positive Slippage (The Litmus Test)

A true ECN broker gives you Positive Slippage. If you set a Limit Order to Buy at 1.0500 and price spikes down to 1.0490, you should get filled better (at 1.0490).

• FTMO: 85% of Limit Orders received positive slippage.
• The 5%ers: 92% received positive slippage.
• Budget Firm X: 0% received positive slippage. (They pocket the difference).

Conclusion

You get what you pay for. If you are a scalper, paying a premium for FTMO or The 5%ers pays for itself in spread savings within 50 trades. If you are a swing trader aiming for 100 pip moves, slippage matters less, so FundedNext is a great value option.