How the DGT's position has evolved
Current position
Professionals under the direct estimation method must maintain record books for income, expenses, investments, and provisions according to the RIRPF. This obligation persists even if the taxpayer maintains accounting in accordance with the Commercial Code. For the deductibility of expenses, such as travel expenses, it is mandatory that they are recorded in the compulsory record books and justified with an invoice.
The DGT's position remains constant in requiring the maintenance of record books to comply with specific tax obligations. A transition is observed from the delimitation of SII obligations in IVA towards the mandatory application of record books in IRPF and the deductibility of expenses. There are no changes in criterion, but rather an application of the rule to different tax areas.
Turning points
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Establishes that the obligation to maintain record books for income, expenses, investments, and provisions persists for professionals under the direct estimation method even when they maintain accounting according to the Commercial Code.
Analysis based on 40 of 44 rulings with a stated position. Updated 23 September 2026.