First I will estimate the necessity expense (such as money to the family, transport, lunch). Then if I will also give myself $1500 for entertainment and shopping. The rest is for saving.
eg. $3000 to family
$2000 for lunch and transport
$1000 for entertainment
So I will save $4000 each month.
2006-11-20 18:10:19 補充:
Sorry, I forgot the $500 for shopping in the example, so I only save $3500 each month.