Hacienda Inspection: A Guide for Businesses

Key Points

1 A Hacienda inspection may cover several taxes and fiscal years.

2 The most common reasons why the AEAT selects a company for an in-depth review.

3 How the inspection notice is delivered and what information it includes to avoid missing key deadlines.

4 What documentation is usually requested and how to organise it to respond in an orderly and timely manner.

5 The phases the procedure follows and what measures to take to reduce operational impact and cash flow tensions.

A Hacienda inspection is one of the situations that causes the greatest concern for any business. Not only because of the potential penalties, but also due to the time, resources and stress involved in facing an in-depth tax review process. However, with proper preparation, well-organised management and the support of specialists, an inspection doesn’t have to become a problem.

Below, we explain step by step, what a Hacienda inspection actually is, how you are notified, when it usually begins, what documentation may be requested and how to prepare to deal with it calmly. At RibéSalat, a global insurance and reinsurance broker, we are ready to help you manage the business risks that may be affected by this type of process, particularly in relation to non-payment, liability and business continuity.

What is a Hacienda inspection?

A Hacienda inspectionis a verification and audit carried out by the Spanish Tax Agency (AEAT) of the tax situation of a company or self-employed professional. Unlike a simple limited review or an information request, an inspection may cover:

Several taxes (VAT, Corporation Tax, personal income tax for professionals, withholdings, etc.).
Several tax years (usually up to four non-time-barred years).
All of the company’s transactions during the period under review.

The aim of the tax authorities is to check that the company has correctly declared its income, expenses, deductions and formal obligations. If significant discrepancies are detected, they may propose additional tax assessments, late-payment interest and, in certain cases, penalties.

For your business, a Hacienda inspection represents, above all, an organisational and risk management challenge: it requires gathering documentation, justifying transactions, dealing with inspectors and, in some cases, facing unexpected cash flow adjustments if tax debts or penalties arise.

When are you subject to a Hacienda inspection?

It is important to understand that there is no single reason or fixed pattern, but there are some factors that can increase the likelihood of being selected for a review. Among the most common are:

Differences that stand out between returns: for example, inconsistencies between declared VAT and informative forms, or data that does not match the information the Tax Agency has from your clients and suppliers.
Unusual profit margins: very low or very high compared to the industry average can attract attention.
Transactions with foreign entities: especially if there are transfer prices, intra-group invoicing or complex structures.
Activity in sectors considered high-risk by the Tax Administration.
Repeated formal errors in returns, late filings or recurring tax debts.

In many cases, selection is carried out in an automated way, based on data cross-checks and risk models designed by the AEAT itself. Other times, it results from complaints, received information or specific tax monitoring plans.

It is important to remember that a Hacienda inspection does not, by itself, mean you have done something wrong. It is a control power of the Administration.

How are you notified of a Hacienda inspection?

Notification usually occurs in the following ways:

Electronic notification at the Enabled Electronic Address (DEHú) or your AEAT electronic mailbox, mandatory for most companies and professionals.
Paper notification sent to the registered tax address, in cases where this is still possible.
Exceptionally, hand delivery by an official of the Administration, with official identification.

The notification will specify:

That inspection proceedings are being initiated.
The scope of the inspection (taxes and periods affected).
The date, place and time of the first appearance or visit.
The identification of the inspection unit and the officials involved.

It is essential that your company has strict control over electronic notifications. Failing to check them on time may mean deadlines pass without your effective knowledge, with the risk of losing opportunities to provide documentation or submit statements.

Likewise, having internal procedures and the support of a specialised adviser is key to detecting and managing any communication related to a Hacienda inspection in a timely manner.

What do they request in a Hacienda inspection?

The answer to this question will depend on the specific scope, but in a Hacienda inspection they usually request:

Complete accounting for the reviewed periods: journals, ledgers, balances, profit and loss accounts, etc.
VAT records, both for issued and received invoices.
Invoices and proof of income and expenses, including contracts, delivery notes, bank statements and other supporting documents.
Payroll, social security and employment contracts, to verify withholdings and personal income tax.
Filed tax forms (VAT, Corporation Tax, withholdings, informative forms such as 347, 349, etc.).
Specific documentation for certain transactions: intra-group loans, significant sales, international operations, etc.

The inspector may request documentation, summon you for interviews, request access to your IT systems and, in certain cases, carry out on-site checks at your workplace.

For this reason, it is essential that your company has organised and accessible document management, and that there is smooth coordination between administration, accounting, tax and management teams. Good preparation will make the difference between a smooth inspection and a complicated, prolonged experience.

Basic phases of a Hacienda inspection

Although each case may have its unique characteristics, a Hacienda inspection usually follows a similar structure:

1. Start of proceedings

The inspection formally begins with the notice of initiation. From that moment:

The prescription of the affected periods is interrupted.
Initial deadlines and documentation requirements are set.
The company’s representatives before the inspection are designated (usually tax advisers, lawyers or company personnel with sufficient powers).

2. Requests and verifications

In this phase, the Administration will request documentation and clarifications. The following may take place:

In-person appearances at the AEAT offices.
Visits to the company’s premises, especially when the actual activity or use of certain assets is being reviewed.
Exchange of correspondence through the Electronic Headquarters.

The company must submit the requested documentation within the established deadlines, being able to request justified extensions when the complexity requires it.

3. Draft assessment

Once the inspection deems that it has sufficient information, it may issue a draft assessment. This will detail:

The facts and legal grounds observed.
Adjustments to the tax bases or declared amounts.
Amounts to be paid or refunded, with late-payment interest.
Possible proposed tax penalties, if an infraction is identified.

The company has the right to submit statements and provide new documentation or arguments in defence of its position.

4. Final settlement and appeals

After analysing the statements, the inspection will issue a final assessment and, where appropriate, a penalty agreement. From that point, deadlines are opened to:

Pay the debt or request deferrals/instalments, if the regulations allow.
File appeals or claims through administrative or economic-administrative channels.

This is a critical moment for the company’s treasury and financial planning. For this reason, many companies integrate these types of contingencies into their overall risk management and consider solutions such as specific insurance (for example, directors’ liability) or coverage against non-payments that may be affected by financial strains resulting from tax adjustments.

How to prepare before a Hacienda inspection

The best way to deal with a Hacienda inspection is to prepare your business’s fiscal and documentary organisation beforehand. Some practical recommendations:

1. Document organisation and traceability

Make sure all your accounting and tax documentation is:

Centralised in secure systems.
Classified by fiscal years and transaction types.
Backed up (copies) to avoid losses.
Quickly accessible, both digitally and, if necessary, on paper.

Good traceability helps justify transactions during the inspection and reduces response time to requests.

2. Periodic review with external advisors

Carrying out preventive tax reviews with independent external advisers allows you to detect potential risks or doubtful interpretations in time and correct them before a Hacienda inspection occurs. This is not about seeking aggressive structures, but about ensuring solid and well-documented compliance.

3. Internal team training

Those in charge of administration and accounting should know:

The AEAT’s main criteria for your sector.
Formal obligations (deadlines, forms, books, etc.).
Communication channels with the Administration.

Internal training reduces formal errors and makes it easier for the company to respond quickly when an inspection begins.

4. Risk management and supplementary insurance

An inspection can result in adjustments that affect your cash flow and, consequently, your ability to meet commitments to suppliers, clients or financial institutions. At RibéSalat we help you with:

Client non-payment insurance, which protects you against default and commercial insolvency, reducing the impact of internal financial pressures.
Professional and directors’ liability insurance (D&O), which can be relevant in contexts where management decisions are questioned (always within the limits and coverages set out in each policy).
Property and business insurance (such as office, retail or industrial insurance) that helps maintain operational stability while complex processes such as an inspection are managed.

Although these products do not replace tax compliance or cover tax penalties not insurable by law, they form part of a comprehensive business protection strategy.

What to do if you have been notified of a Hacienda inspection

If your company has already received notification of a Hacienda inspection, the key steps are:

1. Review the notification in detail

Carefully analyse:

The scope (taxes and periods).
The start date and the deadlines for submitting documentation.
The place of appearance and contact details of the inspection team.

Sharing the notification immediately with your tax and legal advisers is essential to plan your response.

2. Appoint a liaison with the Tax Administration

It is advisable to have a point of contact (internal or external) to coordinate all interactions with the inspection: submission of documentation, clarifications, appearances, etc. This helps avoid contradictory messages and errors due to lack of coordination.

3. Prepare the documentation methodically

Organise the required documentation:

Following the order of the requests.
Clearly indicating what corresponds to each year and each tax.
Adding, when useful, supplementary explanations that help clarify certain transactions (for example, restructurings, changes in accounting criteria, etc.).

A structured response conveys professionalism and can expedite the inspection process.

4. Analyse the potential financial impact

Although the outcome is unknown at the start, it is advisable to assess different economic impact scenarios, especially if the inspection questions significant items. This foresight helps with cash flow decisions, negotiations with financial institutions and liquidity protection.

In this analysis, our team helps you review whether your client non-payment insurance and other coverages are aligned with the current reality of your company and a possible scenario of financial stress.

The importance of non-payment insurance in an inspection context

Although there is no direct link between insurance and the Hacienda inspection itself, the reality is that many organisations undergoing intensive tax reviews may experience:

Cash flow deviations if unexpected settlements arise.
Delays in receiving payments from clients who are also experiencing financial strain.
The need to prioritise payments and renegotiate deadlines.

For this reason, having client non-payment insurance will be decisive, as it:

Protects you, within the terms of the policy, against the risk of insolvency or default by specific commercial debtors.
Facilitates the risk analysis of your client portfolio, thanks to the information services typically included with this type of solution.
Helps stabilise your cash flows, which is critical if you are facing payments resulting from an inspection.

Prepare your business today for tomorrow

A Hacienda inspection is part of the natural control environment in which companies operate in Spain. You can’t prevent the Administration from exercising its powers, but you can:

Minimise risks through solid and well-documented tax compliance.
Improve response capability through organised internal processes and good advisory support.
Protect the economic stability of the business through professional risk management, including client non-payment and other insurable contingencies.

In this context, RibéSalat is your trusted partner to help you design a comprehensive protection strategy, combining advice on client non-payment insurance, home insurance for partners or directors who require it, and other products for businesses and individuals.If you want to assess how prepared your business is to face a possible Hacienda inspection from the perspective of risk management and insurance, we encourage you to get in touch with the RibéSalat team.

FAQs

How long does a Hacienda inspection usually last in a company and what does the duration depend on?

As a legal reference, the inspection procedure has a general maximum term of 18 months, which may be extended to 27 months in certain cases (for example, companies with a turnover requiring an audit or tax groups, among others), and there may also be suspensions or extensions of the timeframe due to circumstances provided for in the regulations. The actual duration depends mainly on the scope (taxes and years), the quality and organisation of the accounting and supporting documents, the complexity of transactions (international, reorganisations, etc.) and the speed with which requests, appearances and clarifications are addressed.

Can the Tax Administration start an inspection with no prior notice by visiting the business?

Yes: the inspection process may be initiated with no prior communication by appearing at the company, offices, facilities or workplaces, when considered necessary to properly carry out the procedures; in such cases, the procedure is deemed to take place with the obliged party if present and, if not, with those responsible or in charge of the premises. If access to a constitutionally protected domicile is required for entry or search, consent or judicial authorisation is necessary.

What rights does a company have during an inspection and how are they exercised in practice?

Among the most relevant rights are the right to be informed and assisted, the right to know one's rights and obligations at the start of the proceedings, and the right to act through representation (tax adviser/lawyer), as well as the right to submit statements and provide evidence in the appropriate procedures.

What common mistakes worsen an inspection and how can they be avoided from day one?

Inspections are greatly worsened by improvisation (not knowing where each supporting document is), disorganised submission of documents, inconsistent explanations among team members, and answering “halfway” thinking it will be expanded later. It is also usually detrimental to adopt a reactive or “defensive” tone instead of focusing on facts and evidence. To avoid this: appoint an internal manager, prepare an index of documentation by tax/year, check for consistencies (accounting–forms–bank statements–invoices), and always respond with traceability: what is submitted, for which period, and what transaction it justifies.

What happens if you can't provide part of the requested documentation on time?

This should be reported immediately and an extension or adjustment of the schedule requested, explaining why more time is needed; in addition, when a request for appearance is not made in the presence of the obliged party, a minimum period of 10 days from notification must be allowed.

What criteria does the Tax Administration use to assess whether an expense is deductible when reviewing it in an inspection?

In general, the review focuses on whether the expense is connected to the business activity, properly supported by valid documentation, correctly recorded, and allocated consistently with the period and the company’s income; when an item is not business-related, poorly documented, or inconsistent with actual operations, it is usually challenged.

Is your business prepared for a Hacienda inspection?