I can't find a definitive answer on this.
This page of IB commissions appears to say there's no such fee (for North American options at least; Euro options might have some).
And this page of cancellation / modification fees only gives examples for Stocks and Eurex Futures (options not mentioned at all.)
I modify prices frequently to try and work my order prices, especially for less liquid options. And I'll often cancel if I can't get a decent fill (which happens regularly). Might I have been getting charged fees each time?
This page of IB commissions appears to say there's no such fee (for North American options at least; Euro options might have some).
And this page of cancellation / modification fees only gives examples for Stocks and Eurex Futures (options not mentioned at all.)
I modify prices frequently to try and work my order prices, especially for less liquid options. And I'll often cancel if I can't get a decent fill (which happens regularly). Might I have been getting charged fees each time?