Profit factor is the ratio of your total gross profit to your total gross loss over a set of trades. A profit factor of 2.0 means you made $2 for every $1 you lost. It's one of the fastest ways to gauge whether a trading strategy is working, at a glance.
The Profit Factor Formula
Profit Factor = Gross Profit ÷ Gross Loss
Add up the profit from every winning trade in the period ("gross profit"), add up the loss from every losing trade as a positive number ("gross loss"), then divide the first by the second.
A Worked Example
Say your winning trades this month totaled $2,400 in profit, and your losing trades totaled $1,200 in losses. Profit Factor = $2,400 ÷ $1,200 = 2.0. For every dollar lost, two dollars were made.
How to Interpret Your Profit Factor
- Below 1.0 — the strategy is losing money overall; losses exceed profits
- 1.0 — breakeven before costs like spread and commission
- 1.5–2.0 — generally considered a solid, tradeable edge
- Above 2.5 — strong, though worth checking whether it's driven by a small number of outsized wins rather than consistent performance
Where Profit Factor Falls Short
Profit factor is a ratio, not a per-trade average — it doesn't tell you your expectancy per trade, and it can look identical for a strategy with a huge win rate and small average win as for one with a low win rate and a few large wins. A profit factor of 2.0 built from 40 trades is far more trustworthy than the same number built from 6 trades, where one lucky trade can distort the entire ratio.
Profit Factor vs. Risk-Reward Ratio
Profit factor looks at your whole trade history at once; risk-reward ratio looks at a single trade's planned risk versus reward before you take it. Both matter — risk-reward ratio helps you plan a trade, profit factor tells you whether your planning has actually worked over time.
Profit Factor, Recalculated Automatically Every Trade
LedgerPips syncs your MT4/MT5 trade history automatically and recalculates your profit factor and every related statistic in real time — no manual tally of wins and losses.
Conclusion
Profit factor is a quick, useful health check on a trading strategy — but like win rate, it's more reliable when read alongside expectancy and sample size, not as a single number in isolation.
