FREE TOOL · NO SIGN-UPHow much does execution cost?
Put spread, commission and slippage in the same units before comparing an EA backtest with your broker.
Illustrative EUR/USD calculation. Assumes a USD account and a standard lot of 100,000 EUR: a one-pip price change is $10 per lot. Check your broker's contract specifications. Defaults are examples, not broker quotes or recommended settings.
Illustrative result
1.70 pips per round trip
$17.00 / lot
17.0% of a 10.0-pip gross reference stop ($100.00 per lot).
At 0.10 lot, the same assumptions equal $1.70; at 0.01 lot, $0.17. This assumes commission scales linearly; broker minimum charges can differ.
Spread 0.80 + commission 0.70 + slippage 0.20 = 1.70 pips.
The comparison is a cost sensitivity check. It does not size a trade or predict a return.
Keep costs from being counted twice
This model starts with a gross reference price move before costs. Actual MT5 entry-to-stop distances and reports may already include bid/ask effects. Do not add spread again to an actual loss or report that already includes it. The calculator is not an exact worst-case stop-loss estimate.
What is excluded?
Swap, financing, currency conversion, minimum ticket charges, gaps and changes in liquidity. Actual stop fills may be worse than requested. Use your broker's actual reports for reconciliation.
Make a useful comparison
Keep the stop assumption fixed, then change only spread or commission. Write down the assumptions with the result. If using the URL to share a scenario, it contains those cost settings but no account number or balance.
DOCUMENTED HISTORICAL MT5 TESTING
October 2026 MT5 tester evidence — simulated, not live.
The current EURUSD M1 reports cover January 2023 through October 16, 2026 with a $10,000 initial test deposit: Prop-Safe PF 3.10 / 1,897 trades, and Compound PF 2.92 / 1,897 trades. They do not predict or guarantee future performance. Use the free seven-day demo to evaluate installation, execution and controls on your own MT5 setup. No payment required. One MT5 account/server activation; seven calendar days from issuance.
Historical simulations and a seven-day demo can both be useful evidence, but neither establishes a guaranteed long-term trading edge.