Why this number decides whether a strategy is viable
Assume 0.06% taker in and 0.06% taker out. That is 0.12% of notional per round trip. At 10x
leverage it is 1.2% of your margin, per trade, before the market moves at all. Three trades a day
for twenty trading days is 72% of margin paid in fees in a month.
Three levers, in order of size
Maker instead of taker. Posting a limit order rather than crossing the spread takes the
round trip from 0.12% to roughly 0.04% — a 3x reduction. Most retail flow is 100% taker out of
impatience, not necessity.
Volume tiers. Fee schedules step down with 30-day volume. A lot of traders are paying
tier-0 rates on tier-2 volume because they never checked where they sit.
Fee rebates. Affiliate and broker programmes return part of the fee. That is disclosed
in the footer, because it is how this site is funded.
Cutting your fee rate improves expectancy by arithmetic, with no forecast required. Improving
your entries requires being right about the future. Do the arithmetic one first.