Combo represents the tax combination of a category code and rate key.

Schema ID$defs/Combo


Categorycatcbc.CodetrueTax category code from those available inside a region.
Rateratecbc.KeyRate within a category to apply.
Percentpercentnum.PercentagePercent defines the percentage set manually or determined from the rate key (calculated if rate present).
Surchargesurchargenum.PercentageSome countries require an additional surcharge (calculated if rate present).
Extextcbc.CodeMapLocal codes that apply for a given rate or percentage that need to be identified and validated.