How the DGT's position has evolved
Current position
Operations involving the distribution and commercialization of water for consideration, including the execution of hydraulic infrastructure works for its distribution and storage, are subject to IVA (Value Added Tax) at the reduced rate of 10%. Conversely, water management and exploitation activities are not subject to the tax pursuant to Article 7.11 of Law 37/1992. The transfer of water use rights to third parties for consideration is also considered an operation subject to the tax.
The DGT's position remains constant in distinguishing between management activities (not subject to tax) and distribution/commercialization activities (subject to tax). Throughout the rulings, it has been specified that the execution of hydraulic infrastructure works for supply forms part of the taxable base for water distribution. Likewise, it has been confirmed that the transfer of water use rights to third parties constitutes an operation subject to the tax.
Turning points
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Establishes that the cost of hydraulic infrastructure works for distribution and storage is included in the taxable base for water supply, applying the reduced rate of 10%.
Analysis based on 14 of 14 rulings with a stated position. Updated 26 September 2026.