In the nautical sector it is common to deal with several VAT regimes in the same week: a domestic client with standard VAT, an export outside the EU, a cost paid on behalf of the client. In Settings → Taxes you register the taxes you will use, so that when creating a document you only have to select them.
First you need to define the tax reporting system that applies to your company (for example, Verifactu in Spain). This determines what additional information is requested in your taxes and invoices.
Click the create button and complete:
Label: the name you'll see when selecting it in a document ("VAT 21%"). If you have multiple taxes at the same rate but different regime, differentiate them in the label.
Value: the percentage. In exempt operations it will be 0, but the tax is still necessary so the document carries the correct legal mention.
Tax profile (Spanish companies only): the type of operation — general, reduced, reverse charge, export, intra-community supply, REBU, supplied, TPA, professional fishing… The profile determines how the operation is reported in Verifactu and what legal note accompanies it. If your company is in another country, this field does not apply.
Legal note: the text that will appear in the document when using this tax. For exemptions and reverse charge, the law requires citing the article that justifies them — write it here once and it will be added always.
Sales and purchase accounting codes: for accounting integrations and exports.
Mark your usual tax as default tax and it will be applied automatically to new lines in your documents. You can always change it line by line.
💡 Recommendation: Only create the taxes you actually use. A short list reduces invoicing errors, and you can always create more when needed.