Which Documents to Translate (and Apostille) for a Spanish Mortgage
Buying a home in Spain from the United Kingdom means handing a Spanish bank paperwork it can read and trust, usually in Spanish. This guide sets out which UK documents normally need a sworn translation, which ones may also need an apostille, and why the list differs from one bank to another.
Who is behind this page. Colibrí Finances is the mortgage brand of PISOK NUEVO HOGAR, S.L., a credit intermediary registered with the Bank of Spain (code E480). We compare more than 20 Spanish banks for people who live abroad. The study is free; we only charge a fee if you sign, agreed in writing beforehand. We answer in English.
Getting your UK paperwork ready for a Spanish bank
If you live in the United Kingdom and want a mortgage to buy in Spain, the Spanish bank assessing your file will ask for the same kind of proof a UK lender would — income, savings, existing debt, identity — but presented in a way its own risk department can process. That usually means a sworn translation into Spanish, done by a translator officially recognised for this purpose, rather than a translation you do yourself.
Some original UK documents also need an apostille, an international stamp that confirms a public document is genuine, before they are even translated. Which documents need which step depends on the bank and on your personal situation, so it is worth checking the exact list early, rather than translating paperwork you may not need or missing something the bank will ask for later.
Rules vary bank by bank: ask your adviser which original documents need an apostille before you pay for a sworn translation, so you do not translate the same paper twice.
Why translation and apostille matter
Spanish banks evaluating a non-resident buyer need to understand income, debts and identity documents that were never designed with Spain in mind. A P60 or a Self Assessment return makes sense to HMRC, but a Spanish risk department needs a Spanish-language version it can read and trust, which is why banks ask for a sworn translation rather than one done by the buyer or a friend.
Apostille is a separate step: it is an international certification, recognised under the Hague Convention, that confirms a public document is genuine before it crosses borders. Not every paper needs one — a bank statement usually does not, while a UK-issued certificate sometimes does — and the exact list depends on the bank and the case, so it is worth asking before you start translating everything.
NIE
Your Spanish tax number
Every non-resident buyer needs an NIE and a Spanish bank account before completing a purchase or signing a mortgage; banks will ask for proof that you have applied for or obtained it.
90/180
Days you can stay without a visa
As the United Kingdom is no longer in the EU, British citizens can stay in Spain for up to 90 days in any 180-day period without a visa; longer stays require a visa or residence permit, separate from the mortgage process.
GBP
Currency to watch
Because the United Kingdom uses sterling rather than the euro, movements between GBP and EUR affect how much a transfer or a payment actually costs by the time it reaches Spain.
The core UK paperwork Spanish banks ask for
Most Spanish lenders build their file around the same five areas: identity, income, existing debt, savings and, where relevant, existing property. For a UK-based buyer this typically means a valid passport, a recent P60 together with payslips, the last filed Self Assessment tax return if you are self-employed or have other income, bank statements from the last three to six months, and evidence of any existing loans or mortgage commitments in the United Kingdom.
None of this list is fixed in law — each bank has its own internal policy, and some ask for more detail on a second property, a pension, or income from a business. Because Spain and the United Kingdom have a double taxation agreement in place, a local tax adviser should also confirm, before you transfer funds, how any rental income or future gain from the Spanish property must be declared both in Spain and reported to HMRC.
| Document | Typical period | Format usually required |
|---|---|---|
| P60 and payslips | Latest year | Sworn translation |
| Self Assessment return | Last filed | Sworn translation |
| Bank statements | 3-6 months | Sworn translation |
| Loan or mortgage statements | Current | Sworn translation |
| Passport | Valid | Certified copy |
- Confirm with the bank, or your intermediary, exactly which documents need an apostille versus a plain certified copy.
- Use a sworn translator recognised for Spanish financial and legal documents, not a general translation service.
- Keep digital and paper originals together, since notaries and registries may ask to see them again later.
- Ask a tax adviser how the double taxation agreement between Spain and the United Kingdom applies to your situation before you sign anything.
- Budget time, not just money, for apostille and sworn translation, since both can take longer than expected.
If you live in the United Kingdom
Spain is a relatively short flight away from most UK airports, making regular visits to a Spanish property straightforward for owners based in Britain. Many British buyers are drawn to Spain for its climate, coastal lifestyle and established expatriate communities. One practical point to bear in mind is that Spanish inheritance law differs from UK rules, so it is worth taking specific advice on how it may affect the property and one's estate. Currency movements between sterling and the euro can also affect the overall cost of purchase and ongoing expenses.
What a Spanish bank will usually ask you for
- Proof of income: recent P60 and payslips
- Last filed UK tax return (Self Assessment)
- Bank statements from the last three to six months
- Evidence of existing loans or mortgage commitments
- Valid passport or UK national identity document
Tax at home and in Spain
Spain and the United Kingdom have a double taxation agreement in place, and a local tax adviser should confirm how rental income or gains from Spanish property must be declared and reported to HMRC.
Staying in Spain
As the United Kingdom is no longer an EU member state, British citizens may stay in Spain for up to 90 days in any 180-day period without a visa, and must apply for a visa or residence permit for longer stays.
Since the United Kingdom uses the pound sterling (GBP) rather than the euro, buyers should factor in exchange-rate movements and currency conversion costs when paying for a property or transferring funds to Spain.
Frequently asked questions
Do I need to apostille my UK bank statements for a Spanish mortgage?
Usually not. Bank statements are generally accepted with a sworn translation alone, since they are issued directly by the bank rather than being a public document in the legal sense. Certificates such as some civil documents are more likely to need an apostille. Always confirm the exact requirement with the lender or your adviser before paying for either step, since practice varies between banks.
I'm self-employed — does my Self Assessment return count as proof of income?
Yes, in most cases the last filed Self Assessment return is the main proof of income a Spanish bank will accept from someone self-employed in the United Kingdom. Banks often also ask for supporting bank statements and sometimes accounts prepared by an accountant. Expect the sworn translation requirement to apply to the Self Assessment return itself, along with any other income evidence you submit.
How long does sworn translation and apostille take?
Both steps take time that is easy to underestimate: a sworn translator needs the original or a certified copy of each document, and an apostille is issued by a UK authority before translation can even begin. Build several weeks into your plan for the combined process, especially if you are gathering documents from more than one source, such as HMRC and your bank.
Does the pound-to-euro exchange rate affect my mortgage application?
It does not change which documents you need, but it does affect how much your transfers and repayments cost in practice, since the United Kingdom uses sterling and the mortgage, like the property, is priced in euros. It is worth discussing currency conversion with your bank or a specialist alongside the paperwork itself.
Do I need a visa to come to Spain to sign at the notary?
As a British citizen you can normally stay in Spain for up to 90 days in any 180-day period without a visa, which is generally enough time to view properties and sign at the notary. Longer stays, for example to manage renovation work, would require a visa or residence permit, a separate matter from the mortgage itself.