How the DGT's position has evolved
Current position
The tax base for Corporate Income Tax (IS) is determined from the accounting result through tax adjustments. In the absence of specific rules in the Corporate Income Tax Law to correct the treatment of subsidies, the imputation criterion of Accounting Standard 18 of the General Accounting Plan must be applied. This implies that the integration of subsidy income into the tax base follows the accounting development of said standard.
The DGT's position remains constant in applying the General Accounting Plan supplementarily in the absence of specific rules in tax regulations. Rulings confirm that the treatment of subsidies and the capitalization of improvements to fixed assets must be governed by current accounting principles. No changes in criterion are observed, but rather a reaffirmation of the application of accounting regulations regarding subsidies and asset valuation.
Turning points
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Reaffirms that, as there are no provisions in the Corporate Income Tax regulations to correct the criterion of Accounting Standard 18 of the General Accounting Plan, said accounting treatment is what must be assumed for tax purposes.
Analysis based on 8 of 9 rulings with a stated position. Updated 29 September 2026.