What Is the Profit/Loss Ratio and How Do You Use It?

What Is the Profit/Loss Ratio?

The profit/loss ratio, often shortened to P/L ratio, compares the average profit per winning trade with the average loss per losing trade. Simply put, the ratio shows whether your winners are, on average, bigger than your losers.

You calculate the ratio over a chosen period and only using trades that have already been closed. Open positions do not count. For example, a P/L ratio of 2:1 means your average profit per winning trade is twice as large as your average loss per losing trade.

The profit/loss ratio sounds similar to PnL (profit and loss), but they are two different things. PnL shows how much profit or loss you actually have, for example on an open position or across all your closed trades together. The P/L ratio, on the other hand, looks at the relationship between the average profit of your winners and the average loss of your losers.

Important to know: the P/L ratio does not say how often you win. It also does not directly tell you what your total result is. For that, you need to look at things like your win rate, trading costs, PnL, and net result.

Also don’t confuse the P/L ratio with the profit factor. The profit factor compares total gross profit with total gross loss. The P/L ratio looks at the average size of a winning trade versus a losing trade.

Key Takeaways

• The P/L ratio compares the average profit of closed winners with the average loss of closed losers.
• A ratio of 2:1 means the average profit is twice as large as the average loss.
• The ratio does not tell you how often you win or what your total return is.
• Win rate and trading costs are needed to judge the ratio properly.
• The P/L ratio is different from the profit factor.

How Is the Profit/Loss Ratio Calculated?

You calculate the profit/loss ratio by dividing your average profit per winning trade by the average loss per losing trade.

The formula is:

P/L ratio = average profit per winning trade ÷ average loss per losing trade

For losses, you use the absolute value. That means you enter the loss as a positive number.

Example: Suppose you close 10 trades in one month.

• 4 trades are profitable and together make €600.

• 6 trades are losing and together cost €300.

Your average profit per winning trade is then:

€600 ÷ 4 = €150

Your average loss per losing trade is:

€300 ÷ 6 = €50

The P/L ratio is then:

€150 ÷ €50 = 3.0

In other words: 3:1

That means your winning trades are, on average, three times as large as your losing trades.

Keep in mind: this does not automatically mean your strategy is profitable. If you only have very few winning trades, your total result can still be negative.

Here’s how to calculate the ratio step by step:

1. Choose a measurement period For example, take all your closed trades from the past month. Use the same period for both profits and losses.

2. Calculate your average profit Add up all the profits from your closed winning trades and divide that amount by the number of winning trades.

3. Calculate your average loss Add up all the losses from your closed losing trades and divide that amount by the number of losing trades. Use the absolute value of the loss.

4. Divide the two results Divide your average profit by your average loss. You can write the result as a number, for example 3.0, or as a ratio: 3:1.

When calculating, also take trading costs into account. Think about commissions, spreads, slippage, and any funding costs. If you leave these costs out, your P/L ratio can look better than your actual net result.

Do you often change position size? Then it can be useful to also look at percentages or fixed risk units. Otherwise, your ratio can be heavily affected because some trades are much larger than others.

Have you not had a single losing trade yet? Then you can’t calculate a normal P/L ratio, because you would be dividing by zero. That mainly means you still have too few losing trades to judge this ratio properly.

How Do You Interpret the Profit/Loss Ratio?

A ratio above 1 means your average winning trade is larger than your average losing trade. The higher the ratio, the larger your average profit is compared with your average loss.

A few simple examples:

• 2:1: your average profit is twice as large as your average loss.
• 1:1: your average profit and loss are the same size.
• 0.5:1: your average loss is twice as large as your average profit.

A high P/L ratio does not automatically mean you are profitable. You also need to look at how often you win: your win rate.

With a ratio of 1:1, you need to win more than 50% of your trades to be profitable, before trading costs. With a ratio of 2:1, the theoretical break-even point is around a 33.3% win rate. With a ratio of 0.5:1, you need about 66.7% winning trades just to break even.

Example: Suppose your average winning trade makes €100 and your average losing trade costs €50. Your P/L ratio is then 2:1.

If you make 10 trades, win 4 of them, and lose 6, then your winners earn 4 × €100 = €400. Your losers cost 6 × €50 = €300 in total.

Even though you only won 40% of your trades, you still end up with €100 in profit before trading costs. That’s because your winners are, on average, twice as large as your losers.

The combination of your win rate and average profit and loss is often expressed as expectancy: the expected return per trade over a large number of trades.

Expected value per trade = win rate × average profit − (1 − win rate) × average loss

That’s why a low P/L ratio is not automatically bad. A strategy with relatively small profits and larger losses can still be profitable if the percentage of winning trades is high enough. On the flip side, a high P/L ratio can still lead to losses if you almost never have a winning trade.

Also keep in mind trading fees, spreads, slippage, and other trading costs. These reduce your actual result and can make the win rate you need to break even a little higher in practice.

So never look at the P/L ratio by itself. Combine it with your win rate, costs, and total PnL to get a better picture of your trading results.

Why Is the Profit/Loss Ratio Important for Traders?

The profit/loss ratio matters because it shows how large your average profits are compared with your average losses. That gives you a quick picture of how your trades are actually performing.

Together with your win rate, the ratio helps you judge whether your strategy makes sense. For example, if you use a tight stop-loss and let winners run longer, you would usually expect your average profit to be larger than your average loss. If that does not show up in your closed trades, it could be a sign that you are taking profits too early or letting losses run too long.

The ratio can also reveal changes in your trading behavior. Maybe you keep closing profitable trades earlier, which lowers your average profit. Or maybe you keep losing positions open longer than planned, which makes your average loss bigger. By checking your P/L ratio regularly, you can spot those patterns faster.

In crypto, it is especially important to look at your net result. The market can move fast, and with low liquidity, your order can be filled at a different price than you expected. That means even a stop-loss does not guarantee that you will sell at exactly the price you set.

So always look at the P/L ratio together with other numbers, such as:

1. Win rate What percentage of your trades ends in profit?

2. Net result How much profit or loss do you end up with after all trades and costs?

3. Number of closed trades The larger your dataset, the more reliable your average profit and loss usually become.

4. Maximum drawdown This is the biggest drop in your capital from a previous peak. A strategy can be profitable and still have large temporary losses.

5. Trading costs Commissions, spreads, slippage, and any funding costs can make a big difference between your gross and net result.

No single statistic tells the whole story on its own. The P/L ratio is mainly useful as part of a broader review of your results and risks.

What Is the Difference Between the Profit/Loss Ratio and the Win Rate?

The win rate tells you how often you win, while the P/L ratio shows how large your average profit is compared with your average loss.

The formula for win rate is:

win rate = number of winning closed trades ÷ total number of closed trades

If you have 6 winning trades out of 10 closed trades, your win rate is 60%.

A high win rate does not automatically mean you are profitable. If your profits are small and your losses are large, you can still lose money even with many winning trades.

On the other hand, a lower win rate can still be profitable if your average winners are much larger than your average losers.

That’s why win rate and P/L ratio together give a much better picture than looking at either number on its own.

Just make sure you calculate consistently. A winning trade, for example, is a closed trade with a net result above zero. Trades that break even can be counted separately or handled according to a fixed rule.

What Are the Limitations of the Profit/Loss Ratio?

The profit/loss ratio is useful, but it works with averages and therefore leaves out important information.

One unusually large winner can push your average profit up a lot. That can make the ratio look attractive, even if most profitable trades are actually much smaller. Especially with a small number of closed trades, the ratio can give a distorted picture.

With only the P/L ratio, you do not see, for example:

1. How many trades you made A ratio based on 10 trades says less than a ratio calculated over hundreds of similar trades.

2. What your win rate is A high average profit helps little if almost all your trades are losing.

3. What your net result is The ratio does not directly show how much profit or loss you ultimately made.

4. How much risk you took Two strategies can have the same P/L ratio but handle position size and risk very differently.

5. How large your maximum drawdown was A strategy can end up profitable but still go through large losses along the way.

6. How much trading costs you paid Commissions, spreads, slippage, and any funding costs can significantly reduce your actual result.

So two strategies can have the same P/L ratio but still produce totally different results and risks.

The input also has to be consistent. If you leave out trading costs or compare different time periods, the result can be misleading. Open positions also do not count in the P/L ratio, because their final profit or loss is not known yet.

A good ratio from a backtest is also no guarantee that a strategy will produce the same result in the future. A backtest uses historical price data. That means a strategy may fit the past very well without the same conditions showing up later.

In the crypto market, fast price moves and low liquidity make this even more important. The loss you planned ahead of time can end up being larger than expected because of slippage, for example.

So if you share or compare a P/L ratio, always mention the period you used, how many closed trades were included, and whether trading costs were part of the calculation.

Profit/Loss at Finst

Finst does not show a separate profit/loss ratio. Instead, you can view your profit and loss (P/L) in different places. This shows how much profit or loss you currently have, expressed in euros.

In your account, you can look at things like:

1. Total P/L Shows how much profit or loss your investments are currently at in total. A positive amount means your total position is in profit, while a negative amount means you are at a loss.

2. Daily P/L Shows how much your total portfolio has gone up or down in value during the current day.

3. P/L per coin In your Wallet, you can see for each cryptocurrency how much profit or loss you have on your position in that coin.

4. Break-even point (BEP) For each coin, you can also view the break-even point. This is the price at which your position is roughly at break-even.

So the P/L figures on Finst are different from the profit/loss ratio. The profit/loss ratio compares the average profit of your winning trades with the average loss of your losing trades. P/L, on the other hand, shows directly how much profit or loss you have in euros.

Conclusion

The profit/loss ratio shows how large your average profit per winning trade is compared with your average loss per losing trade. For example, a ratio of 2:1 means your winners are, on average, twice as large as your losers.

The ratio does not tell you how often you win or how much profit or loss you ultimately made. So always look at it together with things like your win rate, trading costs, net result, and the number of trades your calculation is based on.

At Finst, you do not see the profit/loss ratio, but you do see your P/L. That lets you directly check how much your total portfolio or a specific coin is in profit or loss.