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). A nil percent implies that this tax combo is exempt from tax.
Surchargesurchargenum.PercentageSome countries require an additional surcharge (calculated if rate present).
Extexttax.ExtensionsLocal codes that apply for a given rate or percentage that need to be identified and validated.