Council Tax Calculator: your band is a fraction of one local number
Council tax is built from a single local figure: your council's Band D rate. Every other band pays a fixed fraction of it, from two thirds for Band A to double for Band H. Tell the calculator your band and the Band D rate, £2,200 in the worked figures below, and it builds your bill from those two inputs alone.
On that rate a Band D home pays £2,200 a year and a Band B home pays £1,711.11, and a single adult takes 25% off either figure. The sections below explain how the bands were set, how the fractions work, which discounts the calculator models and what a real bill contains beyond its estimate.
Your 1991 value decides the band, not today's price
Bands were set from 1991 property values in England and Scotland and from 2003 values in Wales. A home that has doubled in price since then keeps its original band, so two neighbours in very different current values can pay exactly the same tax.