A ZDD, or advance tax document, can be considered proof of a received payment based on an issued advance invoice.
Unless the law states otherwise, a VAT payer is obliged to declare output tax on the date of receipt of payment, if this occurs before the taxable supply is performed. The payer states the tax in the tax return for the tax period in which the obligation to declare the tax arose. Therefore, it must be possible to issue advance tax documents.
Just as a ZDD can be issued based on an issued advance invoice, ABRA Flexi also allows you to create a ZDD based on a received advance payment.
Wondering how to deduct a ZDD matched with a payment? You'll find everything you need in our guide.
When working with advance tax documents in ABRA Flexi, two situations can basically arise:
Creating a ZDD based on a bank or cash register payment
Probably the most common situation is when a payment arrives for an advance invoice you have issued.
In order to create a ZDD based on a received payment, the relevant payment must be settling an advance (any other type listed in document types cannot be used for this process).
The simplest process you can carry out in Flexi is to import the relevant payment into the bank, match it with the advance, and create an advance tax document based on it.
Among the services available for the relevant payment (bank/cash register), you'll find the "Create advance tax document" service. We'll use this now for our needs.
The first step is to select the relevant payment settling the advance;
the second step is to use the "Create advance tax document" service.
Clicking this option opens a window with the relevant amounts for the ZDD being created. You can also select the type of ZDD to be created, but you can only choose from document types with the category "Advance tax document".
You can edit the amounts as needed, i.e. adjust the amounts for individual rates. However, the total sum must exactly match the payment amount.
Confirming with "Ok" creates the advance tax document - we are informed of this via a notification.
The newly created ZDD can be found among the issued invoices under the company listed on the advance and settling document.
Note:
The same procedure can be applied to a payment in the bank. The procedure here is essentially identical - with the difference that you create the ZDD based on a payment in the bank rather than in the cash register.
Creating a link between a payment and an existing ZDD
A situation may arise where you have created a ZDD manually and now need to link it to a payment settling the advance. However, in the desktop application, this link can only be created from the ZDD side, not from the payment.
Just as with all other services, you will find this in the services menu in the Invoices agenda. Select the ZDD and open the services menu.
After confirming the option, you will be asked whether you want to search for the payment to match in the bank or cash register.
If there is an advance tax document that can be matched with the payment you are trying to link, it will be offered in the next step.
If you select this payment and confirm the selection with the "Choose" button, the link will be created.
We are again informed of the successful creation of the link via a notification in the lower left corner.
Removing a ZDD link
Since it is possible to create a link, it must also be possible to remove it. As with the steps above, this is a very simple step - literally just a few clicks.
If a ZDD is linked to a payment, it cannot be deleted. You must first remove the link.
Once again, find the ZDD that is matched with the payment and open the services menu for it. As you have probably already noticed when creating the link above, removing the link is done using the same service.
Flexi will automatically recognize whether a link to the payment already exists and will behave accordingly - if it exists, it will be automatically removed. We are then informed of the result again.
Once the link has been removed, the ZDD can be deleted.
FAQ
Wondering how to deduct a ZDD matched with a payment? You'll find everything you need in our guide.
Not sure how to import bank statements? Check out our guide.










