Costs are charged on the way in and the way out, every time. At a few trades a week that is a meaningful share of the year.
A strategy that trades daily pays its spread roughly five hundred times a year. Our own backtests charge five basis points of commission and two and a half of slippage per side for exactly this reason — a cost-free backtest is a fantasy.
Enter the account and typical position size.
Set how many round trips you take a year.
Enter commission plus slippage, per side.
Read the drag on the year.
Short, practical answers. Trade-offs explained, no advice framing.
Shares from account size, risk percent and stop distance, so the loss is decided before the entry.
R-multiples from entry, stop and target, plus the win rate each ratio needs to break even.
What a steady return does to an account over years, with or without monthly deposits.