The tax-structure is the frame for taxes with similar characteristicts. There must be no validity overlaps of the allocated taxes since there is no tax selection in the invoice settings. In the invoice settings you select only the tax-structure and the valid tax is applied automatically.

A use case for allocation of multiple taxes to a tax-structure would be an increase of the tax rate by the turn of the year. In this case you would have tax 1 valid until 31.12.year1 and tax 2 valid from 1.1.year2 until yearX.

1. Name - name for the tax
2. TaxRate - factor (%) that is applied to the net invoice amount
3. SAP TaxCode - taxcode which is used for SAP-exports
4. From/ To - validity of the tax
5. Tax-structure - mandatory selection of a tax structure that the tax will be allocated to. Please note: there can only be one tax applied to the invoice. Consequently only 1 tax should be valid at a time.

1. Show VAT - set the flag if you want a tax rate to be applied to the invoice
2. Tax structure - once the VAT-flag is set, you'll have to select the favoured tax structure. The valid tax of the structure will be applied to the invoice.
3. Ad-Tax - some countries demand a special tax for advertisement which can be selected here.