Entrepreneurs or professionals covered by the simplified VAT regime must comply with the following formal obligations:
Keep a Record Book of invoices received, where you will record the invoices related to the acquisitions and imports of goods and services for which the tax has been borne or paid. Acquisitions and imports of fixed assets will be recorded separately, as well as the information needed to make any necessary adjustments.
If you carry out other activities not attached to the simplified regime, any acquisitions corresponding to each different sector must be recorded separately.
They must keep an Operations Record Book if they carry out any of the activities whose indices or modules operate on the volume of income.
They must keep proof of the applied indices or modules.