Reset Margin The additional fixed spread above the index underlying a floating-rate security. Investopedia Says: For example, if a floating-rate note has a rate based on LIBOR plus 0.5%, the 0.5% or 50 basis points would be the reference rate and would not change throughout the life of the note. Related Terms: Basis Point - BPS Bond Discount Margin - DM Floater Floating-Rate Note - FRN Initial Interest Rate London Interbank Offer Rate - LIBOR Reference Rate Spread |