All-In Round-Trip Cost
Also known as: all-in cost, total cost per trade, effective spread, cost per round turn
What is it?
All-in round-trip cost is every charge a single completed trade incurs, spread plus commission both ways plus any overnight financing, expressed as one number so that two differently priced accounts can be compared directly. The conversion is straightforward once you fix a unit, and pips is the useful one. Take one standard lot of EUR/USD on a raw account: 0.2 pips of spread, with 3.50 dollars of commission on entry and 3.50 on exit.
At 10 dollars per pip that 7.00 dollars of commission is 0.7 pips, so the all-in cost is 0.9 pips, or 9.00 dollars. The same broker's commission-free account quoting 1.4 pips costs 1.4 pips, or 14.00 dollars, which is 56 percent more for an identical trade. Expressing it in pips is what makes the number actionable, because a strategy's edge is measured in pips too.
A scalping bot whose average winner is 4 pips hands 22.5 percent of its gross result to a 0.9-pip cost, and 35 percent to a 1.4-pip one. Nothing about the entry rule changed; a third of the edge was decided by the account.
Why it matters: Reducing every account's pricing to one all-in number per round turn is the only way to see which broker truly costs less and how much of your edge it consumes.
All-in cost (pips) = spread + (round-turn commission / pip value) + swap if held overnight
On short-horizon strategies the all-in cost is often a third of the gross edge, so it decides profitability more directly than the entry rule does.
Real-world example
A scalping strategy averaging a 4-pip winner kept 3.1 pips per trade on a 0.9-pip all-in account and 2.6 pips on a 1.4-pip account, a 16 percent difference in net result from pricing alone.
How SignalBots handles it
SignalBots states each signal's entry and target in price, so you can subtract your own all-in round-trip cost and see the net pips a setup leaves you before you decide to take it. See /risk-warning.
Pro tip
Recompute the all-in cost separately for every symbol you trade. A cost that is trivial on EUR/USD can be several times larger on an exotic pair carrying the same commission.
Common pitfalls
Backtesting on spread alone and leaving commission out, which makes a marginal high-frequency strategy look profitable in the tester and lose money in live trading.
Frequently asked questions
Should swap be included in all-in cost?
Only for positions held past the daily rollover. An intraday strategy pays no swap, so including it overstates cost, while a multi-day strategy that leaves it out understates cost badly.
Why express the cost in pips rather than money?
Because a strategy's edge is already measured in pips. Putting cost in the same unit lets you subtract it straight from the average winner and see what fraction of the edge survives.
Does slippage belong in the all-in cost?
It is not part of the quoted cost, but it is a real one. Measure it from your own fill history and add it as a fourth component when you model a live strategy rather than a backtested one.
How does all-in cost change on exotic pairs?
Spreads widen substantially while commission usually stays flat per lot, so the spread component dominates. On a pair quoting 18 pips, commission becomes almost irrelevant to the comparison.
Is the lowest all-in cost always the best account?
No. Execution quality, rejection rates and reliability during news matter as well, and a marginally cheaper account that rejects orders can cost more than it saves. Your capital is at risk.
Trading involves substantial risk of loss. Historical and backtested results do not guarantee future performance. Read the full risk warning.
