As part of One Stop Shop, we have adapted the destination so that it influences the selection of the VAT country, VAT rows, and VAT rates. In Flexi, the destination is used primarily for record-keeping purposes and therefore should not affect VAT — which is why this influence must first be enabled via a checkbox.
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The checkbox can be found in the Company Address Book by opening the relevant company and navigating to the "Destinations" tab:
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Here, select "New" (or "Edit" for an existing record) and on the right-hand side you will find the option to check "Place of supply":
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Once checked, filled in, and saved, the destination will influence the VAT country, VAT rows, and VAT rates.
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In practice:

Invoice for a foreign VAT payer — Destination is the Czech Republic — Place of supply is unchecked.

The VAT rows on the document will follow the relevant supply type: goods — row 20, services — row 21, and invoice line items will have 0% VAT.

Invoice for a foreign VAT payer — Destination is the Czech Republic — Place of supply is checked.
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The VAT rows will be 01–02 and the applicable VAT rate will be filled in automatically.
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