- a guaranteed minimum amount or number used to compute advertising rates, as the number of subscribers to a publication.
- a basic amount or number used to compute charges to a customer, as the number of monthly phone calls.
- the valuation of property upon which tax rates are based.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for rate base
Contemporary Examples of rate base
By these accounts, the rate-base cut and other changes were driven by Ascheim and his team.Newsweek's Hidden Problem
Rebecca Dana, Peter Lauria
August 4, 2010