Doctrine by topic · DGT Observatory

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 63 rulings · 2014–2026

Current position

The novation, subrogation, or substitution of a loan does not exhaust the possibility of claiming the deduction for investment in a primary residence. The installments of the new loan entitle the taxpayer to a deduction in the proportional part attributable to the amortization of the original loan. If there is an increase in the principal, only the portion intended to cover the cancellation costs of the previous loan is deductible. To maintain the right, the cancellation of the original loan and the signing of the new contract must occur simultaneously in a single act.

The DGT's position remains constant at its core: novation does not exhaust the deduction and allows for the deduction of the part proportional to the original loan. The evolution shows greater technical precision regarding the simultaneity of the acts. Ruling V1241-26 introduces the requirement that the cancellation and the new contracting occur in a single act to avoid losing the right.

Turning points

  1. V1241-26

    Establishes that the cancellation of the original loan and the signing of the new contract must occur simultaneously in a single act to maintain the right to the deduction.

Analysis based on 56 of 63 rulings with a stated position. Updated 23 September 2026.

Rulings on this topic

24
V1129-26 19 May 2026

Deduction for habitual residence maintained after mortgage loan extension

SG de Impuestos sobre la Renta de las Personas Físicas
deducción por inversión en vivienda habitualrégimen transitorioampliación de préstamonovaciónamortización LIRPF — Ley 35/2006 del IRPF art. 68.1.1ºLIRPF — Ley 35/2006 del IRPF art. 70.1
Affects CompanyExpat · Non-residentIndividual
V1148-22 25 May 2022

Release of a co-debtor in a mortgage loan is subject to Stamp Duty

SG de Impuestos Patrimoniales, Tasas y Precios Públicos
actos jurídicos documentadossujeto pasivoliberación de deudorpréstamo hipotecariocodeudor TRITPAJD — RDLeg 1/1993 de ITP y AJD art. 29TRITPAJD — RDLeg 1/1993 de ITP y AJD art. 31.2
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