Use this tab window to enter general tax information for your company, and define on which level (object, address or transaction) tax code shall be validated. You define tax code validation levels for customer and supplier separately.
Tax code validations for object level controls wether tax code is mandatory or not on sales item and on supplier for purchase part.
Tax code validations for address level controls if tax code for supply country is mandatory on customers delivery tax information tab. This means that object level and address level both validate tax code against predefined basic data. Transaction level, validate the tax code on each transaction row.
You can also enter tax liability, rounding method and max overwriting level on tax.