YOu don't need any 'study' to see this metric is garbage. Even the discussion at the link promptly ignored the '70% of income' and replaced it with '70% of spending'.
Obviously what you spend in your last year B4 retirement must be the starting point for determining what you will spend the next year. I.e. plus recreation expenses and less job expenses.
But what you EARN B4 retirement probably has NO relationship to what you SPEND those years. You are in heavy-duty savings mode those last years.
Obviously what you spend in your last year B4 retirement must be the starting point for determining what you will spend the next year. I.e. plus recreation expenses and less job expenses.
But what you EARN B4 retirement probably has NO relationship to what you SPEND those years. You are in heavy-duty savings mode those last years.