Doctrine by topic · DGT Observatory

Loan Novation: DGT doctrinal evolution

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

← DGT Observatory

How the DGT's position has evolved

Settled doctrine High confidence 12 rulings · 2017–2026

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 are deductible in the proportional part attributable to the amortization of the original loans intended for acquisition. If there is an increase in the principal, only the part intended to cover the cancellation costs of the previous loan is deductible.

The DGT's position remains constant in the sense that the modification of financing conditions does not interrupt the right to the deduction. The rulings confirm that deductibility depends on the proportional part of the loan that amortizes the capital intended for the housing according to the transitional regime. No changes in criterion are observed, but rather a reiteration of the application of proportionality.

Analysis based on 11 of 12 rulings with a stated position. Updated 27 September 2026.

Rulings on this topic

12
V2802-21 15 Nov 2021

Main residence tax deduction cannot be increased following mortgage novation

SG de Impuestos sobre la Renta de las Personas Físicas
deducción por inversión en vivienda habitualnovación de préstamoparte indivisarégimen transitorioprestatario LIRPF — Ley 35/2006 del IRPF art. 68.1.1ºLIRPF — Ley 35/2006 del IRPF art. 70
Affects CompanyExpat · Non-residentIndividual

Apply this to your case

Beckham Law & impatriate taxationTalk to the team applying this doctrine daily.
IRPF Spain 2026 CalculatorEstimate the impact on your case in two minutes.
Talk to the tax teamWe check whether this criterion affects you and what it means in your situation.
Email
Contact