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The Tax Agency offers a batch filing service that allows the user to send multiple tax returns corresponding to the same form, fiscal year and period automatically.
In this case, you need to access the E-Office and go to the webpage for the procedure in question. In the 'Submission' section, there is a link to 'Batch filing'.
Once you have selected the electronic certificate, you will need to configure the batch filing options:
Check that the certificate that you have used to identify yourself is correct and tick 'Agree'.
Select the directory containing the tax return files. We recommend that you use multiple files in the directory as opposed to a single multi-declaration file. Bear in mind that the files need to be in a Tax Agency directory file on your local drive. If the result of the tax returns is a payment, you need to have the Full Reference Numbers stored in a single file, and you can also select the directory.
You can check and modify the pre-established directories for generating responses, the overview and the files processed. To do this, click on the + sign to reveal and hide the options.
You can select 'Delayed sending' if you want to send the tax returns at a specific time on a specific date. For delayed sending to work, you need to have a permanent connection and you need to keep your browser open.
Finally, click 'Sign and Send' and finish the signature process.
Once all the tax returns have been sent, a summary of the process will appear with the tax returns that have been accepted and rejected, along with a list of the responses. If you select the NIF for the holders of each of the tax returns sent, you will see the accepted forms with their Secure Verification Code, and any errors associated to the process if it has been rejected. You can also consult the PDF files of tax returns submitted and their responses in the directory C:\AEAT\lotes\aceptadas.