Tax on Private Real Estate Debt in Spain: Guide 2026
Short answer: interest that a private investor earns by lending money to a third party is generally taxed in Spain as income from movable capital in the savings tax base, at rates of 19% to 30%, with a 19% withholding where applicable. The exact treatment depends on how the investment is structured and on your personal situation.
If you are looking into the tax treatment of private real estate debt, this guide sets out the general framework for a Spanish tax resident, with official sources and an illustrative example. It is not tax advice: check your own case with an adviser before investing. For the wider picture, see our overview of alternative mortgage lending in Spain.
How interest from private debt is taxed under Spanish personal income tax
Article 25.2 of Law 35/2006 on personal income tax (IRPF) treats the consideration agreed for lending one’s own capital to third parties, such as interest, as income from movable capital. In other words, if you lend money and receive interest, that income is neither business income nor a capital gain.
This income goes into the savings tax base. The state scale (article 66) runs from 9.5% to 15%; adding the default regional scale gives the familiar 19%, 21%, 23%, 27% and 30%. Some regions may apply their own scale, so check yours.
| Savings base (band) | Approximate total rate |
|---|---|
| Up to EUR 6,000 | 19% |
| EUR 6,000 to 50,000 | 21% |
| EUR 50,000 to 200,000 | 23% |
| EUR 200,000 to 300,000 | 27% |
| Over EUR 300,000 | 30% |
Interest is generally allocated to the period in which it falls due, not when the principal is repaid. This matters for loans where interest is paid at maturity or capitalised: you may owe tax before you receive the cash.
Withholding and filing: what happens in practice
Where the payer is required to withhold, a 19% withholding on account is applied to the interest. It is not the final tax: it is settled in your annual return, where you may owe more or receive a refund depending on your band. If the payer does not withhold, you still have to declare the interest.
It is good practice to ask for an annual interest certificate and, where applicable, a certificate of the tax withheld. The Spanish Tax Agency receives that information from the payer.
Structure changes the tax treatment
Not every way of investing in private debt is taxed the same way. Before deciding, check which instrument you actually hold:
- Direct loan: interest as income from movable capital, as described above.
- Participating accounts (cuentas en participación): the non-managing participant is usually also taxed as movable capital according to the tax authority’s doctrine, but the classification depends on the contract.
- Securities or intermediate vehicles: the treatment depends on the vehicle, its domicile and whether there is a transfer or redemption, which can give rise to a different type of income.
- Non-residents and companies: they are subject to other taxes (non-resident income tax or corporate income tax) with their own rules.
Illustrative and hypothetical example: from gross to net interest
Suppose a EUR 25,000 loan over two years with a hypothetical interest rate of 6% a year, paid annually. This is not an Ondara Group return or forecast: it only shows the effect of tax. Assumptions: the investor already has other savings income, so the marginal rate shown applies, and there are no deductible expenses or defaults.
| Marginal rate | Gross annual interest | Annual tax | Net annual interest |
|---|---|---|---|
| 19% | EUR 1,500 | EUR 285 | EUR 1,215 |
| 21% | EUR 1,500 | EUR 315 | EUR 1,185 |
| 23% | EUR 1,500 | EUR 345 | EUR 1,155 |
Tax takes between EUR 285 and EUR 345 a year in this case. In a higher band the gap widens. The key is to compare returns net of tax, costs and risk, not just gross.
Trends: what is happening worldwide and in Spain
- Worldwide (27 May 2026): the ECB’s Financial Stability Review flags private credit as a possible source of financial stability risk. According to press coverage of the report, euro area insurers have about EUR 211 billion exposed (2.3% of their assets) and banks about EUR 62.5 billion (0.2%). The ECB sees direct losses as limited but warns of data gaps. For investors: a growing market that supervisors are watching closely.
- Spain (25 September 2026): Banco de España data, reported by Finantres Noticias on 28 September, put lending to productive activities at EUR 574.6 billion in the second quarter of 2026 (+3.9% year on year), while lending to construction fell to EUR 24.3 billion (-2.2%). The second-quarter Bank Lending Survey also points to tighter credit supply. This is the setting in which non-bank financing gains ground.
Risks to consider
- Risk of capital loss: every investment carries risk, including partial or total loss of capital. Property collateral mitigates risk but does not eliminate it.
- Illiquidity and term: capital is tied up until maturity and terms can be extended.
- Tax risk: classification depends on the structure and can change with the tax authority’s criteria or with new legislation.
- Paying tax before receiving cash: with capitalised interest or payment at maturity, income may be allocated before it is received.
- Defaults: if the borrower does not pay, unpaid interest does not become income received, and its treatment needs specific analysis.
What to check before investing
- The type of instrument (loan, participating account, securities) and its tax classification.
- Who the payer is, whether they withhold tax and which certificates they issue.
- When interest accrues and when it is paid.
- Your marginal savings band and your other income.
- The real collateral, its valuation and the exit plan.
How Ondara Group works
Ondara Group is an alternative investment manager based in Barcelona, active since 2018. We structure private debt transactions with real assets as collateral, analyse each transaction individually and seek diversification. Investors deal directly with the management team; the minimum investment is EUR 25,000. We aim for target double-digit returns, which are a target and never guaranteed. Meet the team and our brands.
Frequently asked questions
How is interest on a loan to a third party taxed?
Generally as income from movable capital (article 25.2 of the personal income tax law), included in the savings base, at 19% to 30% on the general scale.
Is tax withheld?
Where the payer must withhold, the withholding on account is 19%. It is settled in the annual return.
Do I have to declare the interest if nothing was withheld?
Yes. Interest must be declared whether or not the payer withheld tax.
Can expenses be deducted?
Deductible expenses for movable capital are limited and do not generally include the cost of financing the investment. Check your case with an adviser.
Are participating accounts taxed the same way?
For the non-managing participant, the tax authority usually applies the movable capital classification, but it depends on the contract. Review it with a professional.
In summary
- Interest from private debt is generally taxed as movable capital in the savings base (19%-30%).
- The 19% withholding is on account; the final result is settled in the annual return.
- Structure (loan, participating account, securities) and residence change the treatment.
- Always compare returns net of tax and risk.
- All investments carry risk, including loss of capital.
Invest in private debt backed by real collateral
If you would like to know how we invest, register as an investor and we will explain how it works. The minimum investment is EUR 25,000.
This article is for information purposes only and does not constitute an investment recommendation or financial advice. All investments carry risks, including the possible loss of the capital invested, and past or target returns do not guarantee future returns. Analyse each opportunity with a professional before investing.
