In EA, people use the word "counterfactual" in a non-standard way, but I've never heard this discussed or pointed out. E.g. Jeff writes, 

Say I offer to make a counterfactual donation of $50 to the Against Malaria Foundation (AMF) if you do a thing; which of the following are ok for me to do if you don't?

But outside of the community, "counterfactual" means "didn't happen". I think the word "causal" is closest in meaning to how we use "counterfactual," though it doesn't work in this case. 

(In this case, I think the standard English way of communicating the idea is "Say I offer to make a donation of $50 to AMF only if you do a thing...")