The risk-reward ratio is the most quoted number in trading and one of the most misunderstood. You have seen the advice: only take trades with a 1:3 or better ratio and you cannot lose. That is not how it works. A ratio on its own tells you nothing about whether a strategy makes money. It is one half of an equation, and people keep quoting it as if it were the whole thing.

So here is what the number is, what it measures, and where it stops being useful.

What the risk-reward ratio actually is

Risk-reward is a simple comparison of two distances on a single trade: how far your stop-loss sits from entry (the risk) versus how far your take-profit sits from entry (the reward). If you risk 20 pips to make 60, that is a 1:3 ratio. If you risk 50 to make 50, that is 1:1.

That is all it is. It is a planning number, decided before you enter, based on where you put your stop and target. It says nothing about how often you actually hit that target. A 1:5 ratio is trivially easy to set up. Put your stop tight, put your target far away, and the spreadsheet looks beautiful. Whether price ever reaches the target is a completely separate question, and that question is where most traders go quiet.

This is the core confusion. People treat the ratio as a promise of profitability when it is really just a description of trade geometry.

Why the ratio means nothing without win rate

A ratio only becomes useful when you pair it with how often you win. The two numbers are inseparable, and they trade off against each other in a way that is not intuitive until you do the arithmetic.

Here is the break-even win rate for a few common ratios, ignoring costs:

1:1 needs a 50% win rate to break even

1:2 needs about 33%

1:3 needs about 25%

1:5 needs about 17%

The formula is straightforward: break-even win rate = risk / (risk + reward). For 1:3 that is 1 / (1 + 3), which is 25%.

Read those numbers the other way and the trap appears. A 1:5 strategy that wins 17% of the time only breaks even. If your honest win rate at that ratio is 15%, you are losing money with a gorgeous-looking risk-reward number attached to every trade. Meanwhile a 1:1 scalping approach that wins 58% of the time is quietly profitable. The ratio told you nothing about which one to trade.

This is why the sensible way to think about a strategy is through expectancy , not the ratio in isolation. Expectancy combines the two: (win rate x average win) minus (loss rate x average loss). A positive number means the approach makes money over enough trades. A ratio cannot be positive or negative on its own, which should tell you it is incomplete on its own.

Planned ratio versus realised ratio

There is a second gap that quiet trading advice never mentions: the ratio you plan is almost never the ratio you get.

You plan 1:3. Then you move your stop to break even too early and get wicked out for zero. You take partial profit at 1:1 because the trade felt shaky. You close the whole position at 1.4R because you got nervous near a level. None of these are the 1:3 you wrote down. Over a hundred trades, your planned average reward might be 3R while your realised average reward is 1.6R. Your break-even maths was built on a number you never actually captured.

This is where a journal earns its place. If you record the planned stop and target at entry, then the actual exit, you can compare the two and see how much reward you are leaving on the table (or how much risk you are quietly adding by widening stops). This is one of the more useful things to log, and it sits alongside the other journal metrics that matter . TradeSave+ stores both the intended risk-reward and the realised outcome per trade, so the difference between your plan and your behaviour becomes a number you can look at rather than a feeling you argue with.

R-multiples: the cleaner way to talk about the same idea

Once you are recording outcomes, it is worth switching from raw pips or dollars to R-multiples. One R is the amount you risked on the trade. A winner that made three times your risk is +3R. A full stop-out is -1R. A trade you cut early for a small loss might be -0.4R.

The point of R is that it makes trades comparable regardless of position size or account balance. A 2R win on a small account and a 2R win on a large one are the same quality of decision, which is exactly what you want to measure. It also removes the temptation to judge trades by dollar amounts, where a big loss feels catastrophic and a big win feels like genius, when both might just be size. We go deeper on this in the piece on R-multiples versus win rate , and the short version is that thinking in R makes the risk-reward ratio far more honest, because you are grading every trade against the same yardstick.

What a good ratio is good for

None of this means the ratio is useless. It is genuinely helpful in a few specific ways.

It forces you to define an exit before you enter. Deciding where your target and stop sit before the emotion starts is worth a lot on its own.

It sets a floor for what a setup is worth. If a trade only offers 1:1 and your win rate on that setup is 45%, you can reject it on the maths rather than on hope.

It gives you room for error. Higher-reward trades let you be wrong more often and still survive, which is psychologically easier than needing to win most of the time.

What a good ratio is bad for

Equally, here is where the number quietly misleads people.

It says nothing about whether the target is reachable. A 1:6 target sitting the far side of a major resistance level is a 1:6 target you will rarely hit.

It ignores trade costs. Spread and commission eat into tight stops disproportionately. On a 5-pip stop, a 1-pip spread is a 20% tax on your risk before you have done anything.

It tempts you toward stops that are too tight. Chasing a prettier ratio by squeezing the stop just means you get stopped out by normal noise more often, dragging your real win rate below break-even.

That last point is the most common self-inflicted wound. Traders reverse-engineer a nice ratio by tightening the stop rather than by finding better entries, and then wonder why their win rate collapsed.

How to actually use it

Treat the ratio as an input, not a scoreboard. Set your stop where the trade is genuinely invalidated, not where the ratio looks tidy. Set your target where price has a realistic reason to go, not at whatever distance makes the number impressive. Then check the pairing: given the win rate you honestly record for that setup, does the combination clear break-even with margin to spare?

You cannot answer that from memory, which is the whole argument for keeping records. Log the planned ratio, log the realised R, and after fifty or a hundred trades let the numbers tell you whether your 1:3 dream is a 1:1.6 reality. If you want a practical starting point, the guide on keeping a trading journal that works covers the fields worth tracking.

The risk-reward ratio is a good servant and a terrible master. Used as one half of an expectancy calculation, checked against what you actually do rather than what you planned, it is one of the most practical tools you have. Quoted on its own as proof a strategy will print money, it is just a nice-looking number attached to trades that may or may not work.