To determine the richest lawmakers, Roll Call adds up the minimum value of total assets reported by each Member on their annual financial disclosures and subtracts the minimum liabilities. Percent change refers to the change since last year's disclosure forms.
An asset valued at $5 million to $25 million is counted at the lesser amount, as is a liability valued at $1 million to $5 million.
Source: Roll Call. Read full article. (link)