For myself, my wife, and my daughter
80K a year
TX
Why: That covers a really nice house, two functional vehicles, business attire, moderate food expense (we don't eat lobster and steak every night), savings for college and our retirement, and some moderate entertainment and travel expenses. We could live on 50k a year if we tightened up expenses, but it would be fairly tight, meaning to have college, savings, and retirement taken care of, we would have to live in a small house, drive small cars, buy all discount clothing, never eat out, and rarely go to the movies.