Rate Lock Daniel Guidotti 14 years ago Rate LockUnderstanding between borrower and mortgage lender outlining a predetermined interest rate guaranteed to remain fixed for a specific period, typically two months.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 Anticipation Swaps Rate of Interest Rate Risk Rate of Return Regulation