the schedule is at http://interactivebrokers.com/en/p.php?f=commission
excluding exchanges fees based on a per month number of contracts (not Round-Trips) executed:
0.85$ under 1000 contracts executed
0.65$ 1001-10000 contracts executed
0.45$ 10001-20000 contracts executed
etc ...
[1] Volume tiers are applied based on monthly cumulative trade volume summed across all futures and futures options contracts at the time of the trade. Only contracts that are traded while under the Volume Tiered pricing structure will count towards the monthly volume. Contract volumes for advisor, institutions, and broker accounts are summed across all accounts for the purpose of determining volume breaks. These fees are applied on a marginal basis for a given calendar month. If for example, you execute 1,500 US contracts in a month, your IB execution costs would be:
- 1,000 contracts at USD 0.60
- 500 contracts at USD 0.45
I know tiered commission is possible under NT7 right now but it is not done on a per month basis as in the example given by IB above.
this has been somewhat discussed here under a bug/improvement report for earlier version of NT7:
Is it feasible now under the current version of NT7.1000.5 ? if yes, how ? if not, any development planned to make the per month commission schedule work when we backtest or trade live ?

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