Doctrine by topic · DGT Observatory

R&D Deduction: DGT doctrinal evolution

How the DGT's position on this topic has evolved, and the rulings it rests on.

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How the DGT's position has evolved

Settled doctrine High confidence 13 rulings · 2014–2024

Current position

The R&D+i deduction may be applied with the 20 percent discount provided for in Article 39.2 of the LIS even in the presence of the minimum net tax liability. After applying said discount, the taxpayer may request the payment of the amount not deducted due to insufficient tax liability. Software development requires significant scientific or technological progress through new theorems, algorithms, or languages to be considered R&D, or a technological advancement in processes to be considered technological innovation.

The DGT's position remains stable regarding the technical definition of R&D and software, focusing on the need for new knowledge or substantial advancements. No changes are observed in the nature of the deduction, but rather clarifications on the application of the minimum tax liability and the treatment of subsidies. The doctrine has moved from defining basic concepts to resolving aspects of technical application and tax liability limits.

Turning points

  1. V1611-15

    Establishes that the deduction base must be reduced by 65 percent of the subsidies received and attributable as income.

  2. V4267-16

    Defines the qualified researcher as a professional with a university degree assigned exclusively to research programs.

  3. V2211-24

    Clarifies that the entity may apply the deduction with the 20 percent discount even in the presence of the minimum net tax liability.

Analysis based on 12 of 13 rulings with a stated position. Updated 27 September 2026.

Rulings on this topic

13
V2211-24 15 Oct 2024

Settling I+D+i deduction with negative taxable base possible if minimum liquidated amount met

SG de Impuestos sobre las Personas Jurídicas
deducción por investigación y desarrollomonetización de deduccionescuota líquida mínimabase imponible negativainsuficiencia de cuota LIS — Ley 27/2014 del Impuesto sobre Sociedades art. 29.1LIS — Ley 27/2014 del Impuesto sobre Sociedades art. 29.6
Affects CompanyExpat · Non-residentIndividual
V3521-19 23 Dec 2019

Non-profit associations may apply capitalisation reserves if legal requirements are met

SG de Impuestos sobre las Personas Jurídicas
entidad parcialmente exentareserva de capitalizaciónactividad económicadeducción por investigación y desarrolloasociación sin ánimo de lucro LIS — Ley 27/2014 del Impuesto sobre Sociedades art. 5LIS — Ley 27/2014 del Impuesto sobre Sociedades art. 9.3.a
Affects CompanyExpat · Non-residentIndividual
V1284-16 29 Mar 2016

Requirements for the additional 17% tax deduction for dedicated qualified research personnel

SG de Impuestos sobre las Personas Jurídicas
deducción por investigación y desarrolloinvestigador cualificadoadscripción en exclusivabase de la deduccióninforme motivado TRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 35.1.aTRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 35.1.c
Affects CompanyExpat · Non-residentIndividual
V1611-15 26 May 2015

R&D tax deduction base may be adjusted in the tax year the subsidy is received

SG de Impuestos sobre las Personas Jurídicas
deducción por investigación y desarrollobase de la deducciónsubvencionesperíodo impositivoregularización TRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 35.1LGT — Ley 58/2003 General Tributaria art. 122.2
Affects CompanyExpat · Non-residentIndividual
V2400-14 11 Sept 2014

R&D tax credits from previous years may be applied to 2013 tax returns

SG de Impuestos sobre las Personas Jurídicas
deducción por investigación y desarrolloperiodo impositivocuota íntegralímite cuantitativoinversiones en inmovilizado TRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 35TRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 44
Affects CompanyExpat · Non-residentIndividual
V0463-14 20 Feb 2014

Developing ticket management software is not R&D, but could constitute technological innovation

SG de Impuestos sobre las Personas Jurídicas
deducción por investigación y desarrolloinnovación tecnológicasoftware avanzadoprogreso tecnológico significativonovedad tecnológica TRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 35.1.aTRLIS — RDLeg 4/2004 (derogado por la Ley 27/2014) art. 35.2
Affects CompanyExpat · Non-residentIndividual

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