the amount on which rates or taxes are assessed.
Origin of ratal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the amount on which rates are assessed; ratable value
of or relating to rates (local taxation)
Word Origin for ratal
C19: see rate 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012