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Interest calculator

Legal Interest Calculator Spain

Calculate legal interest (Art. 1108 CC), procedural default (Art. 576 LEC) and commercial late payment interest (Law 3/2004 LATE). Rates updated for 2025–2026.

Interest type

€

Frequently asked questions

What is the legal interest rate in Spain for 2026?

The legal interest rate in Spain for 2026 is 3.25%, the same as in 2025, 2024 and 2023. With the 2025 budget still in force (prorogued), the rate remains unchanged. It is set annually by the General State Budget Law.

When does the procedural default rate apply?

The procedural default rate (Art. 576 LEC) applies from the date of the final judgment until full payment. It equals the legal rate plus 2 percentage points (5.25% in 2025 and 2026).

What is the LATE rate and when does it apply?

The LATE rate (Law 3/2004 on measures against late payment) applies to commercial B2B transactions. It is the ECB rate plus 8 percentage points, updated every 6 months.

Can I claim compound interest?

No. Compound interest (anatocismo) is prohibited in Spain unless expressly agreed by the parties (Art. 1109 CC). This calculator computes simple interest on the principal amount.

Legal reference framework

Art. 1108 CC

Legal interest

Applicable when the debtor defaults and there is no agreed interest rate between the parties.

Art. 576 LEC

Procedural default

Interest from final judgment until full payment. Rate: legal interest + 2 percentage points (5.25% in 2026).

Law 3/2004 LATE

Commercial default B2B

Only for B2B or company-to-public-body transactions. ECB rate + 8 percentage points, updated every semester.

This tool is for reference only. Rates are based on public BOE and Bank of Spain data. For legal proceedings, always consult a qualified lawyer.

Questions about legal or default interest?

Lexiel explains the legal rate of interest, procedural default interest (art. 576 LEC) and insurance act interest (art. 20 LCS) with verified references and current rates.

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