Sure there could be a general field rather than a tax specific field, the field would account for estimated expenses and it would reduce the payout amount in order to attempt to measure net pay as compared to gross pay, yet from my current thinking that kind of extra field seems to have tendencies to overly complicate the tool. What do you think bitmover? Do you want to add an expenses field?
I think that it will make the tool more complicated and won't add any valuable information.
Each country has different taxes, expenses depend on each exchange, bank etc. It is very personal. It could be another slider, but I don't think it will add valuable information