Wells Fargo & Co., the home lender that agreed to refinance mortgages after a probe of the industry’s practices, may forgo as much as $2 billion in interest, $300 million more than previously estimated, Bloomberg News reported yesterday. The lost interest may range from $1.8 billion to $2 billion in future years, or $181 million to $201 million annually, San Francisco-based Wells Fargo said today in its quarterly regulatory filing. As many as 36,000 borrowers may get their interest rates cut, according to the filing. Wells Fargo, the biggest U.S. home lender, had estimated in August that 40,000 might be covered. The program is part of a $25 billion mortgage settlement in February by five banks with 49 states and the federal government.