Modelo 181 — Spain’s annual loans and credits return

Modelo 181 is Spain’s annual return on loans and credits, and from the 2026 financial year it is filed under a new order, in a new message format. Orden HAC/747/2025 approved a new Modelo 181 and repealed the 2009 order that governed it. The first return under the new rules covers 2026 and is due between 1 and 31 January 2027. The return matters to more than banks: any entity in the business of granting credit, and any entity that finances or intermediates the purchase of real estate, can be caught, and so can branches and freedom-of-services firms lending to Spanish residents. This guide sets out who files, the two legal duties the return combines, the record design, the codes that cause most errors, and four worked scenarios for credit-granting fintechs.

1. Two duties, one return

Modelo 181 serves two separate articles of the Reglamento General de las actuaciones y los procedimientos de gestión e inspección tributaria (RGAT), approved by Real Decreto 1065/2007.

Article 38.1 also covers Spanish branches of entities from other EU Member States and from third countries. It reaches entities from those States operating in Spain under the freedom to provide services too, where the borrower is resident in Spain or is a Spanish permanent establishment of a non-resident. The text in force from 1 January 2026, as amended by Real Decreto 253/2025, keeps both rules.

Article 38.1.b), on cash deposits and withdrawals above EUR 3,000, is the other half of the same article. It is reported on Modelo 171, not on Modelo 181.

2. Who files: the scoping question for fintechs

Article 7 of Orden HAC/747/2025 defines the filers by cross-reference: the entities mentioned in articles 38.1 and 54 RGAT. There is no separate list. Scoping therefore depends on two tests.

• The credit-business test (art. 38.1). Credit institutions are named. The rest of the category is functional: entities whose business, under the rules that govern them, is granting credit. A lender whose regulated activity is credit, such as an establecimiento financiero de crédito, should scope itself against this limb and record the conclusion.
• The real-estate test (art. 54). This limb is about the transaction, not the licence. Granting or intermediating any loan that finances the purchase of a property or a right over it brings the entity in for those operations.

Payment and e-money institutions are a separate case. Article 38.2 RGAT names them, but only for the cash-movement return in letter b). They are not named for letter a). A payment institution may still grant credit linked to payment services under the conditions of Article 18(4) of Directive (EU) 2015/2366, and a firm that does so should decide in writing whether that activity makes it an entity engaged in credit business. The text does not answer that question for you, so the decision and its reasoning belong in the compliance file.

3. When and how it is filed

The return is annual. Article 9 of the order sets the window: 1 to 31 January of each year, for operations of the previous calendar year. The final provision on entry into force applies the order from 1 January 2026 and makes the return for the 2026 financial year, filed in January 2027, the first one under the new rules. Orden EHA/3514/2009, which governed the old Modelo 181, is repealed but still applies to returns for earlier years.

The format is a structured electronic message, not a flat file. Article 18 of the order applies the general procedure in articles 16 and 17 of Orden HAP/2194/2013, with some exceptions, and article 19 sends the technical format and design to the AEAT electronic office. Article 18.2 sets the acceptance rule that matters most for operations teams:

• if the return contains errors, only records with no ground for rejection are accepted;
• the response message lists accepted and rejected records, with the reason for each rejection;
• if at least one record is accepted, the response carries a 16-character secure verification code and the date and time of filing;
• rejected records must be corrected and filed again.

Partial acceptance means a return is never simply filed or not filed. Each record has its own status, and the response message is the evidence for each one.

4. The record design in Annex II

Annex II of Orden HAC/747/2025 sets out the fields. The structure has four blocks.

Four code lists carry most of the meaning:

• Origin (L7): A for an operation formalised in the year; F for one from earlier years; M for a modification; C for a cancellation; J for a modification and cancellation in the same year; K and L for the absorbed and absorbing entity in a merger; T and V for the transferring and receiving entity in a transfer, subrogation or change of lender.
• Type (L8): A mortgage loans, B other loans, C mortgage credits, D other credits, E other financial operations.
• Sub-key (L9): 1 and 2 for a property that is or is not the borrower’s main home; 3 and 4 for a right in rem over such a property; 5 for any other purpose.
• Role (L10): 1 granting entity, 2 intermediary, 3 other involvement. With 2 or 3, the lender’s name and NIF are mandatory.

The sub-key decides how much of the record you complete. For sub-key 5, financing not linked to real estate, the initial amount, modified amount, capital repaid, interest, costs and refund fields are left empty. The outstanding balance at 31 December is still reported for types A to D. A consumer-credit lender therefore reports a lean record: identity, account, dates, term, type B or D, sub-key 5 and the year-end balance.

Real-estate records are heavier. For operations constituted after 1 January 2009 with sub-keys 1 to 4, the record needs the property’s location code, the cadastral reference where the property is in common-regime Spain, the appraisal value, and a structured address otherwise. Where the loan finances the main home, the percentage of financing for that home is required.

5. Four worked scenarios

Scenario 1 — a consumer-credit lender. Facts: a Spanish credit-granting fintech has 40,000 instalment loans; 9,000 have a balance above EUR 6,000 at 31 December 2026. Rule: art. 38.1.a) RGAT; type B, sub-key 5. What the team does: filters on the year-end balance, maps each loan to type B, leaves the real-estate and payment fields empty, and files in January 2027. Outcome: 9,000 operations reported, plus one record per co-borrower with participation percentages that add up to 100.

Scenario 2 — a mortgage intermediary. Facts: a platform arranges home-purchase mortgages that banks grant; it never lends. Rule: art. 54 RGAT; role 2, intermediary. What the team does: files a record for each intermediated operation, names the lending bank and its NIF in the lender block, and collects the cadastral reference and appraisal value at origination. Outcome: the platform is a filer for these operations. Missing cadastral references, which must be collected at signing, are the usual cause of rejection.

Scenario 3 — an EU lender without a branch. Facts: a lender authorised in another Member State grants loans to Spanish residents under the freedom to provide services. Rule: art. 38.1 RGAT, freedom-of-services paragraph. What the team does: obtains a Spanish NIF for filing, keeps customer residence as a maintained field, and reports Spanish-resident borrowers only. Outcome: the residence field drives scope. Borrowers who move to Spain during the year need a rule for which year-end status counts.

Scenario 4 — a loan sold mid-year. Facts: a lender sells a portfolio to another entity on 30 June. Rule: origin keys T and V. What the team does: the seller files key T with amounts paid up to the transfer date and no outstanding balance; the buyer files key V with amounts from the transfer date to 31 December and the year-end balance. Both use the date the loan was first granted. Outcome: the AEAT sees one continuous loan. If both parties report the year-end balance, the borrower appears twice.

6. FAQ

7. What to do, today

• Write down, for each lending product, whether it falls under art. 38.1, art. 54, both or neither, with the reasoning.
• Check that the loan book holds the year-end balance, the term in months, the date of grant and the date of any modification for every operation.
• Map products to type codes A-E and sub-keys 1-5. Keep the mapping as a versioned document.
• For real-estate financing, collect the cadastral reference, appraisal value and main-home declaration at signing.
• Test the electronic message against the AEAT format in good time before January 2027, and build a process to correct and refile rejected records.
• Put Modelo 181 on the same January calendar as Modelos 171 and 174.

Related: Modelo 171 — cash operations over EUR 3,000 · Modelo 196 is monthly now · Modelo 174 — the card-issuer return