Rate of Interest Daniel Guidotti 14 years ago Rate of InterestThe percentage of the principal charged by lender from borrower in exchange for use of the funds. Typically calculated on an annual basis.Random Finance Terms for the Letter SRange ForwardRARRatable Accrual MethodRate Anticipation SwapsRate LockRate of ChangeRate of InterestRate of Return RatiosRate of Return RegulationRate RiskRecommended for you:Rate Lock Rate Anticipation Swaps Rate Risk Rate of Return Ratios