The analyst "concluded from that analysis that BAC will not need to raise capital, although BAC still needs to accumulate capital as quickly as possible." Mosby added that "until short-term rates begin to rise, BAC's earnings power is between $10 billion and $12.5 billion a year," and that the company's after-tax mortgage losses ranges will range between $15 billion and $50 billion. "While our best-case scenario could be funded with about one year's earnings, the worst-case scenario could create a $2 haircut to BAC's year-end estimated tangible book value per share of $14," he said. Interested in more on Bank of America? See TheStreet Ratings' report card for this stock.