> For the complete documentation index, see [llms.txt](https://docs.solutioo.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solutioo.de/magento-2-api-connector/magento2_en_us/configuration/set-up-taxes-and-posting.md).

# Set Up Taxes and Posting

Taxes and posting groups are the most critical setup area.

### Greenfield Tax Bootstrap

**Setup Business Central Tax** can create a base structure:

* VAT business posting group
* VAT0, VAT7, and VAT19
* VAT posting matrix
* General posting groups and shipping G/L account

{% hint style="danger" %}
Only run this in empty or intentionally prepared test tenants. Existing general ledger must be reviewed by the responsible parties.
{% endhint %}

### Tax Mapping

Magento tax classes and rates are mapped to BC product posting groups. Review each Magento class from a business perspective.

### Configuration Fields

* VAT Business Posting Group
* Gen. Bus. Posting Group
* Gen. Prod. Posting Group
* Shipping Cost G/L No.
* VAT Difference Percent
* VAT Tolerance %

### Prices Including Tax and Recalculation

The flags **Prices Including Tax**, **Calculate Tax When Create Sales Order**, and **Calculate Tax on Shipping Cost** affect lines and shipping costs.

### Acceptance Testing

Verify net/gross, multiple tax rates, shipping, discount, rounding, EU/international, and credit memos.


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