Purchases IVA book in El Salvador: what it is, which documents it records and how to prepare it faster

The purchases IVA book is the register where a business organizes acquisitions related to its economic activity. In Salvadoran accounting practice, it helps document which purchases generate input tax credit, which transactions are taxable or exempt, and which documents support each amount.

When a business buys from a supplier and receives a Comprobante de Crédito Fiscal (CCF, a tax credit voucher), that transaction is normally reviewed for the purchases book. The person preparing the book checks the date, supplier, NRC or NIT, document number, taxable amount, IVA, exempt purchases, imports and other fields depending on the document.

With electronic invoicing, the most valuable input is no longer just the PDF: the DTE JSON contains the structured document data. This reduces manual entry, but also requires correctly classifying each file to prevent errors in the book.

The most common case is a Comprobante de Crédito Fiscal received for local purchases. Credit notes, debit notes, imports, exempt transactions or documents relating to sujetos excluidos may also appear, depending on the business.

The operational rule is simple: not every file received by email belongs in the purchases book. First identify whether the business is the document recipient, whether the DTE type belongs in the selected book, and whether its date falls within the period being prepared.

The most costly mistake is not always arithmetic: often it is misclassifying a document. A final-consumer invoice, a withholding voucher or a CCF issued by the business can end up in the wrong place when the process relies on copying and pasting without validation.

Another common mistake is mixing months. If the closing period is May but April or June documents are included without review, the totals no longer match the period. It is therefore useful to work by business, month and book type.

To prepare the purchases IVA book in El Salvador, the recommended sequence is to gather the period’s DTE JSON files, separate documents by business, validate that they are received purchases, check for duplicates and generate the book with its fields ready for accounting review.

AIBEX does not replace responsible tax review. It removes repetitive work: reading JSON, identifying DTE types, organizing rows and preparing the book for review, download and monthly follow-up.