Limited-Scope Tax Audit: Defend Your Position and Lock In the Preclusive Effect

The comprobación limitada (Arts. 136–140 LGT) is the AEAT's standard limited-scope examination procedure for verifying specific data, returns, and documents in a tax period. Unlike a full tax inspection, the AEAT is expressly prohibited from examining accounting records or conducting searches in a comprobación limitada. The procedure must be resolved within six months: if the AEAT fails to issue a resolution within that period and the delay is not attributable to the taxpayer, the proceedings expire by caducidad (administrative expiry) with no legal effect. Once correctly resolved — whether by settlement or dismissal — Art. 140 LGT establishes a preclusive effect (efecto preclusivo) that permanently prevents the AEAT from reopening the same facts, documents, and tax periods. This preclusive effect is one of the most powerful tools available to taxpayers for definitively closing an examined tax position.

Our team defends taxpayers throughout every stage of the comprobación limitada — from the initiation notice to the conformity or disagreement decision and, where necessary, the full appeal chain. Our 78% success rate reflects a disciplined approach to early-stage analysis and the strategic use of every procedural tool the LGT provides.

Why the Comprobación Limitada is the Most Consequential Routine AEAT Procedure

The comprobación limitada is by far the most common examination procedure that Spanish taxpayers — individuals and SMEs alike — encounter. Its apparent simplicity conceals two strategic traps: the conformity decision and the caducidad deadline.

The conformity decision is irreversible. Signing an acta de conformidad accepts the AEAT’s proposed settlement, grants a 30% reduction in any sanction, and — critically — triggers the Art. 140 LGT preclusive effect that permanently closes those tax positions. Signing a disagreement maintains appeal rights but sacrifices the sanction reduction. The wrong choice can cost tens of thousands of euros in either direction: agreeing too readily to a flawed settlement, or failing to lock in the preclusive effect when the AEAT’s position is legally defensible.

The six-month caducidad deadline runs from the initiation notice. Many taxpayers are unaware that this deadline exists. Where the AEAT approaches the deadline without having issued a resolution, the correct procedural response can cause the proceedings to expire — eliminating the assessed liability and requiring the AEAT to initiate a new procedure (subject to the four-year prescription period).

Our Defence Process for Limited-Scope AEAT Tax Audits

We engage from the moment the AEAT initiation notice arrives. The first step is scope analysis: every comprobación limitada defines the specific taxes, periods, and facts under examination. We verify that the AEAT’s requests for documents and information are within the legal limits of Arts. 136–140 LGT and challenge any overreach. Providing voluntarily more than is legally required in a comprobación limitada carries procedural risks that we manage carefully.

We prepare written allegations with full legal and factual argumentation. We track the six-month resolution deadline and make the strategic conformity decision with the taxpayer based on a case-specific cost-benefit analysis: the 30% sanction reduction and preclusive effect of conformity versus the full appeal rights of disagreement. Where disagreement is the correct strategy, we manage the full appeal chain — reclamación económico-administrativa (TEAR/TEAC) and recurso contencioso-administrativo — with full coordination of our litigation team for the judicial stage.

Regulatory Framework: Arts. 136–140 LGT — Scope, Preclusive Effect and Caducidad

Art. 136 LGT defines the permitted scope of the comprobación limitada and expressly prohibits the examination of accounting records. Art. 137 LGT sets out the procedural steps. Art. 138 LGT governs the termination of the procedure. Art. 139 LGT establishes the documentation of the resolution. Art. 140 LGT provides the preclusive effect: once the procedure is resolved, the same facts, documents, and tax periods cannot be re-examined in a new comprobación limitada or in a full inspection, with the exception of subsequent inspections arising from the discovery of new facts or evidence not previously available.

The six-month resolution deadline is governed by Art. 104 LGT. Failure to resolve within the deadline results in caducidad: the procedure expires without legal effect. The statute of limitations (Art. 66 LGT — four years from the day following the filing deadline) continues to run during the expired procedure, so a new procedure can still be opened if the four-year period has not elapsed.

Real Results in Limited-Scope Tax Audit Defence

• 78% success rate across comprobación limitada defence proceedings, measured as full reversal, material reduction, or definitive preclusion of the assessed amount.
• Strategic conformity decisions that lock in the Art. 140 LGT preclusive effect and permanently close examined tax positions.
• Exploitation of caducidad in cases where the AEAT fails to resolve within the six-month statutory deadline.
• Scope challenges that eliminate unlawful AEAT requests for documentation outside the permitted limits of the procedure.
• Full appeal chain management for disagreement cases — TEAR/TEAC reclamación and judicial review — where the legal merit justifies continued challenge.