In situations like this where I buy a XYZ $50 strike call for $1 I would sell the XYZ call for $0 and buy XYZ stock at $50. Then I let the broker deal with the combined cost basis as they will have to report that to you on a 1099 at the end of the year.If you're talking about how to attribute the cost of the $1 call to the common stock making your cost basis $51 (instead of $50 cost basis of common w/ $1 loss on the call) you can always buy the stock at $51 and delete the call (or sell the call for the price you paid - e.g. $1). But doing this will make the transactions inconsistent with what your brokerage would show.I do not know anyway in Quicken to transfer the cost of Call to the Common shares when you exercise while still keeping the transactions consistent with what the broker will show. Maybe someone else has found a way.