Doctrine by topic · DGT Observatory

Loan Subrogation: 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 26 rulings · 2015–2025

Current position

The novation, subrogation, or substitution of a loan does not exhaust the right to the deduction for the primary residence. The installments of the new loan allow for the deduction in the proportional part attributable to the amortization of the original loan. In the event of an increase in the principal, only the portion intended to cover the cancellation costs of the previous loan is deductible.

The DGT's position has remained constant since 2015. The criterion establishes that the substitution of debt does not interrupt the financing process as long as continuity exists. Throughout the rulings, it has been reiterated that an increase in the principal is not deductible unless it is intended to cover cancellation costs.

Analysis based on 25 of 26 rulings with a stated position. Updated 24 September 2026.

Rulings on this topic

24
V2629-25 23 Dec 2025

Right to deduct mortgage payments retained after loan transfer

SG de Impuestos sobre la Renta de las Personas Físicas
deducción por inversión en vivienda habitualsubrogación de préstamorégimen transitorioamortización de principalfinanciación ajena LIRPF — Ley 35/2006 del IRPF art. 68.1.1ºLIRPF — Ley 35/2006 del IRPF art. 70.1
Affects CompanyExpat · Non-residentIndividual
V2703-21 8 Nov 2021

Right to main residence tax deduction maintained when replacing a mortgage loan

SG de Impuestos sobre la Renta de las Personas Físicas
deducción por inversión en vivienda habitualfinanciación ajenaamortizaciónsubrogación de préstamorégimen transitorio LIRPF — Ley 35/2006 del IRPF art. 11LIRPF — Ley 35/2006 del IRPF art. 18
Affects CompanyExpat · Non-residentIndividual
V2843-20 22 Sept 2020

Deduction for principal residence can be maintained after mortgage loan subrogation

SG de Impuestos sobre la Renta de las Personas Físicas
deducción por inversión en vivienda habitualsubrogación de préstamorégimen transitorioamortización de principalfinanciación ajena LIRPF — Ley 35/2006 del IRPF art. 68.1.1ºLIRPF — Ley 35/2006 del IRPF art. 70
Affects CompanyExpat · Non-residentIndividual
V3181-19 15 Nov 2019

Deduction for main residence can be maintained when replacing a mortgage loan

SG de Impuestos sobre la Renta de las Personas Físicas
deducción por inversión en vivienda habitualrégimen transitoriosubrogación de préstamoamortización de principalfinanciación ajena LIRPF — Ley 35/2006 del IRPF art. 68.1LIRPF — Ley 35/2006 del IRPF art. 70
Affects CompanyExpat · Non-residentIndividual

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