In short
If you take a mortgage to buy a home in Spain, the stamp duty on the mortgage deed (Actos Jurídicos Documentados, AJD) is owed by the lender, not by you. That has been the national rule since 10 November 2018, when Real Decreto-ley 17/2018 amended article 29 of the transfer-tax text. You are still the taxpayer on the deed of purchase, and you still pay the valuation and any copies you ask for. The AJD rate itself is regional, so the amount differs even though the rule on who pays is national.
What the law says
Article 29 of the consolidated text (texto refundido, TRLITPAJD, Real Decreto Legislativo 1/1993) makes the buyer (“the acquirer of the asset or right”) the taxpayer of AJD on notarial documents in general. It then adds: “In the case of deeds of loan with a mortgage guarantee, the lender will be considered the taxpayer.” The consolidated text shows that this version was published on 9 November 2018 and in force from 10 November 2018, and applies to taxable events arising from that date.
Two deeds are therefore involved in a typical purchase with a mortgage:
| Deed | AJD taxpayer |
|---|---|
| Purchase deed (escritura de compraventa) | Buyer; see VAT and stamp duty on new homes |
| Mortgage deed (escritura de préstamo hipotecario) | Lender |
On a resale home the purchase is charged ITP rather than AJD; see the ITP guide.
What you still pay on the mortgage
Ley 5/2019, the mortgage credit law, covers the costs of arranging the loan in article 14.1.e. Before signing, the lender must give you “clear and truthful information” on which costs fall on it and which on you. The law then distributes them:
- Valuation (tasación) of the property: the borrower.
- Administrative agent (gestoría) costs: the lender.
- Notary fees for the mortgage deed: the lender; but “the copies are borne by whoever requests them”.
- Registration of the mortgage guarantee in the land registry: the lender.
- The tax: “the payment of the transfer tax and stamp duty will be made in accordance with the applicable tax rules”, which is why article 29 decides the question.
In practice, then, what you pay is the valuation, plus the cost of any copies of the mortgage deed that you request. You should also expect the lender to ask for insurance; the law requires the lender to give you the insurance conditions it demands in writing (article 14.1.f). To model the loan itself, use the mortgage calculator.
How the mortgage AJD is calculated
The base for a loan with a guarantee is, under article 30.1, “the amount of the obligation or capital guaranteed, including the sums secured for interest, compensation, penalties for breach and other similar items”. If the deed does not state the guaranteed amount, the base is the capital plus three years of interest. The base can therefore be larger than the loan amount alone.
Regional rates on mortgage deeds
The rate is set by each region under article 31.2, with the State fallback of 0.5%. This guide gives a rate only where it was read in the regional text.
| Region | Rate read for deeds of mortgage loans |
|---|---|
| Asturias | 1.5% (art. 34 bis) |
| Catalonia | 2% where the lender is the taxpayer (art. 642-1.b) |
Calculation, not a quote: on a guaranteed amount of €200,000, 1.5% is €3,000 in Asturias and 2% is €4,000 in Catalonia, in each case owed by the lender. The Community of Madrid also bonifies the AJD at 100% for certain modifications and subrogations of mortgage loans (article 38); the conditions are in the regional text. The general AJD rates on a purchase deed, which are different, are in the guide on new homes.
What changes when a mortgage is transferred
If your mortgage is later taken over by another lender under the subrogation law, article 14.1.e of Ley 5/2019 requires the new lender to reimburse the former one for the proportional part of the tax and costs it bore, using the outstanding balance plus interest and similar items as the base for the AJD. That is a payment between lenders, not a cost for you.
What it costs
For the borrower, the AJD on the mortgage deed is nil, because the lender is the taxpayer. The valuation fee and copies are the borrower’s costs; this guide found no official scale for valuations, so ask the valuer or lender for the figure in writing. The mortgage calculator does not add AJD to the borrower’s costs.
Which professional to consult
A lawyer registered with a Spanish bar association (colegio de abogados), see property lawyer, can check the pre-contract information the lender must give you on costs. A valuer, see property valuer, prepares the valuation the lender requires.
Frequently asked questions
Do I pay AJD when I sign my mortgage?
Not on the mortgage deed. Article 29 makes the lender the taxpayer.
Is the rule the same in every region?
Who pays is national. The AJD rate is regional.
Do I pay AJD on the purchase deed?
On a new home, yes: the buyer is the taxpayer. On a resale the purchase pays ITP.
Who pays the valuation?
The borrower, under article 14.1.e.i of Ley 5/2019.
Was this always the rule?
No. It applies to taxable events from 10 November 2018.
More guides on purchase taxes by region
- Balearic Islands transfer tax: 8% to 13% and AJD 2%
- Basque Country and Navarre: 4% home transfer tax
- Buying in Catalonia: ITP from 10% to 13%, and 20%
- Canary Islands purchase taxes: ITP 6.5%, IGIC 7%
- Canary Islands: IGIC on a new home and ITP on resale
- Catastro reference value: tax base on a Spanish purchase
- ITP: transfer tax on a resale home in Spain, by region
- Madrid property tax: 6% ITP and the AJD scale
- Murcia property transfer tax: 7.75% ITP since July 2025
- Property transfer tax in Andalusia: 7% ITP and AJD
- Reduced transfer tax for young buyers in Spain, by region
- Valencian Community: 9% ITP since June 2026, 11% over €1m
- VAT and stamp duty on a new home in Spain
Sources
- Real Decreto Legislativo 1/1993, TRLITPAJD, arts. 28-31 (BOE, consolidated text updated 21/03/2026) (consulted 15 October 2026)
- Ley 5/2019, reguladora de los contratos de crédito inmobiliario, art. 14.1.e (BOE, consolidated text updated 07/10/2026) (consulted 15 October 2026)
- Decreto Legislativo 2/2014, Asturias, art. 34 bis (BOE) (consulted 15 October 2026)
- Decreto Legislativo 1/2024, Catalonia, art. 642-1 (BOE) (consulted 15 October 2026)
- Decreto Legislativo 1/2010, Community of Madrid, art. 38 (BOE) (consulted 15 October 2026)