Income generated by the investment of assets. Insurers have two sources of income, underwriting (premiums less claims and expenses) and investment income. The latter can offset underwriting operations, which are frequently unprofitable.

"Investment Income" In Context

"Serious negotiations to address the problem probably won’t occur until after the election, leaving a two-month lame-duck Congress little time to resolve monumental issues, including whether to extend investment, income and payroll-tax cuts affecting all ..."