/visma-net-erp/help/vat/manage-vat-periods/about-the-setup-and-maintenance-of-vat-periods section You configure a tax year structure for each particular combination of the branch and tax agency by using the VAT periods (TX207000) window. 2026-02-19T17:09:06+01:00 # About the setup and maintenance of VAT periods You configure a tax year structure for each particular combination of the branch and tax agency by using the VAT periods (TX207000) window. For more information: [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/). ## Setting up VAT periods In the [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/) window, you can set up VAT periods for the selected branch and tax agency. The duration of these VAT periods may differ from the default VAT period type specified for a tax agency in the [Suppliers (AP303000)](/visma-net-erp/help/supplier-ledger/supplier-ledger-windows/suppliers-ap303000/) window. To set up VAT periods, in the **Branch** and **Tax agency** fields in the top part of the [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/) window, you select the required branch and tax agency. In the **Tax year** field, specify the tax year for which you are going to configure the periods. Then in the **VAT period type** field, select the required type of a VAT period. Once you select a VAT period type, the system displays the list of VAT periods in the table on the window. > [!NOTE] > You can change the VAT period type only if all of the periods of the selected year have the **Open** status. To complete the process of setting up periods, click  in the window toolbar. > [!NOTE] > By default, a legal entity has a tax year that starts on January 1, has a duration of one calendar year, and has the period duration specified for the tax agency in the [Suppliers (AP303000)](/visma-net-erp/help/supplier-ledger/supplier-ledger-windows/suppliers-ap303000/) window. If you do not need to modify these default settings, you can proceed with tax report preparation without performing any additional configuration in the [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/) window. ## Viewing VAT periods On the [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/) window, you can select the needed branch, tax agency, and tax year in the top part. Once you do, the system displays the list of VAT periods in the table, so that you can review VAT periods and their statuses for the current tax year and or a past tax year. In the table, you can also view the net VAT amounts for the closed VAT periods. ## Shortening a tax year In Visma Net, you can configure a short tax year or a tax year of a duration that is less than 12 month. In the [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/) window, once you select the required combination of the branch and tax agency, you select a needed tax year in the **Tax year** field, and, next to this field, you select the **Short tax year** check box. Once you do, the **Add period** and **Delete period** buttons become available on the table toolbar, so that you can delete and add periods as needed. You save this modified tax year configuration by clicking  in the window toolbar. > [!NOTE] > Only a tax year for which all periods have the **Open** status can be shortened. ## Specifying the default VAT period type The default VAT period type is specified for each tax agency in the **Default VAT period type** field on the **Tax agency settings** tab of the [Suppliers (AP303000)](/visma-net-erp/help/supplier-ledger/supplier-ledger-windows/suppliers-ap303000/) window. The system uses this VAT period by default for each newly added branch. You can override this setting for a particular tax agency and branch by using the [VAT periods (TX207000)](/visma-net-erp/help/vat/vat-windows/vat-periods-tx207000/) window. ### Parent topic [Manage VAT periods](/visma-net-erp/help/vat/manage-vat-periods/manage-vat-periods/) ### Related tasks [Configure a tax year](/visma-net-erp/help/vat/manage-vat-periods/configure-a-tax-year/)