Blended Rate
  
When you pull out your accountant blender and put in a bunch of different interest rates, you’ll end up with a blended rate cocktail. Blended rates are when accountants combine interest rates, which they may do in a variety of situations.
For instance, if you were refinancing your mortgage, you might get a blended rate that combines your old interest rate (that high, ugly rate) with the current market rate (the new, low, shiny rate). If you’re juggling multiple debts and want to consolidate, an accountant can crunch your numbers to get a blended rate for one consolidated debt loan.
Be forewarned: accountant blenders should only be used under the supervision of an accountant.