In the rendering of services, at the latest within the tax period in which the taxpayer receives the remuneration or consideration, when it is credited to his account or is made available to him; When invoices are not issued at the time of delivery of the personal property, the sellers must issue and deliver to the buyer at that time, a delivery order or dispatch note, and the invoice issued subsequently must refer to the delivery order or dispatch note.

Source ( tax.thomsonreuters )

In the case of sales of goods or rendering of services that are partially or totally void or originate an adjustment, for any reason, and for which invoices, equivalent documents or vouchers were issued, the taxpayer shall issue debit or credit notes to the original purchaser, in which reference shall be made to the date, number and amount of the original invoice.

To declare and cancel the tax, ordinary taxpayers must declare and pay the value added tax, if applicable, monthly within the first continuous days of the taxation period, which corresponds to a calendar month, before the offices receiving national funds (authorized banks).

Regarding the obligation to keep books, taxpayers must keep such additional books, records and files as may be necessary to comply with the provisions set forth in the tax law and its regulations, in this sense, a purchase book and a sales book must be kept, in addition to the books required by the Commercial Codes (in case of merchants).

Source ( corpbiz )

In which all and each one of the operations carried out are reflected in chronological form, including those that are not taxable with the tax, as well as the new invoices or equivalent documents and the debit or credit notes issued or received, the same, are made and filled based on the provisions established in the regulations of the Tax Law.

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