What is the best way to calculate the effect rake has on your winrate.

[Feike]

With all the different methods of calculating rake, I was wondering what method was the "pure" method of calculating the effect of rake if no rake-back existed.

So I thought of a method, but I haven't seen this method around, so I must be taking a wrong turn somewhere.

This is what I was thinking:
- Rake only impacts me if I win a pot
- if I get the full pot, I lose 100% of the rake paid on this pot
- if I get x% of the pot (losing a main pot and winning a side pot for example) I roughly lose x% of the rake paid.

Would this be a good way to calculate the impact of rake on your winrate?

(with this method I calculated I lose about 3.6PTBB per 100 hands, small sample size though, 11K)

Any thoughts?