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Another important question:

How does my stack size effect this decision?

For instance, if I had to risk 50% of my stack to make this call as opposed to 12%, is it still automatic?


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It does affect the decision. Lets say there are 5 players left. You have 1500 along with two others, with one player on 600 and another on 3900. If the blinds are big it may appear +EV to call an allin by the 600 stack, but look at the results.

If you fold you will still have a very good stack to compete. If you win you will increase in chips, but how much will this increase your chance of cashing in the tournament? If you call and lose, you will be the small stack of the tournament and likely to go out not long after.

I havent explained this very well, but if calling and losing will stuff your position (in terms of competing stacks) up completely then you have to take this into consideration. 50% of your stack is a much more significant decision than 12%, when a loss will make much less difference. SNG Power Tools takes this into consideration.