How the DGT's position has evolved
Current position
Expenses linked to the development of commercial activity are deductible if they comply with accounting registration, accrual-based imputation, correlation with income, and documentary justification. They must correspond to real operations and not be classified as non-deductible by the LIS (Corporate Income Tax Law). The Administration will assess the evidence provided to prove the reality of the operation.
The DGT's position has remained constant over time regarding the general requirements for deductibility. The rulings reiterate the need to comply with accounting registration, accrual, the correlation of income and expenses, and documentary justification. No changes are observed in the doctrine applied regarding accrual-based imputation.
Analysis based on 20 of 21 rulings with a stated position. Updated 25 September 2026.