NOTE: IG claims an AUDUSD average spread of 0.75 https://www.ig.com/au/forex but I don’t get 0.75 when I compare the backtest to the live trades.

Although there can be 1 – 3 milliseconds difference of time when the trade is executed on the live account (eg. 14:00:03) and the backtest (eg. 14:00:00) takes the price at the exact time/hour so this could be the margin of difference?

When I looked at myfxbook again it showed a spread average of 0.6 – 0.8 however IG is no longer listed there as an option but GraHal’s link still works.

I built a Google Spreadsheet web scraper a few weeks ago to store the data from IG’s live website but its not that reliable.